A method for preparing black cotton-like fibers is provided, using a DTY texturing process, wherein POY and FDY fibers containing carbon black are sequentially passed through a first yarn guide, a yarn guide roller, a tensioner, a first yarn feeding roller, pre-entangling, a second yarn feeding roller, a first deformation hot box, a cooling plate, a false twister, a third yarn feeding roller, a middle entangling device, a setting hot box, a setting yarn feeding roller, oiling, and winding to obtain a black cotton-like fiber; the first yarn guide is a yarn guide wheel; a tow contacts a groove bottom of the first yarn guide in the process of movement, driving the first yarn guide to rotate; and the tensioner is a magnetic tensioner.
D02G 1/02 - Production de fibres, filaments, filés ou fils, crêpés ou ondulés ou leur donnant de telles caractéristiques latentes par retordage, fixage de la torsion et détorsion, c.-à-d. en conférant une fausse torsion
D02G 3/44 - Filés ou fils caractérisés par la destination pour laquelle ils ont été conçus
2.
METHOD FOR PREPARING FULL-DULL COTTON-LIKE POLYESTER FIBERS
A method for preparing full-dull cotton-like polyester fibers includes: sequentially passing a full-dull polyester POY fiber and a full-dull polyester FDY fiber through a first yarn guide, a yarn guide tube, a second yarn guide, a first yarn feeding roller, pre-entangling, a second yarn feeding roller, a first deformation hot box, a cooling plate, a false twister, a third yarn feeding roller, a middle entangling device, a setting hot box, a setting yarn feeding roller, oiling, and DTY winding and forming to obtain the same. The first and second yarn guides are both yarn guide wheels; a tow is wound around the first yarn feeding roller for 2-3 turns; an inferior angle of the tow before and after contacting a groove bottom of the second yarn guide is 140°-160°; a linear velocity ratio of the first yarn feeding roller to the second yarn feeding roller is 1.05-1.06.
D02G 3/04 - Fils provenant de mélange ou autres filés ou fils contenant des composants faits de matières différentes
D02G 1/02 - Production de fibres, filaments, filés ou fils, crêpés ou ondulés ou leur donnant de telles caractéristiques latentes par retordage, fixage de la torsion et détorsion, c.-à-d. en conférant une fausse torsion
The present invention relates to a segment colored pile yarn and a preparation method therefor and an apparatus. In the process that filament multifilament yarns move at a constant speed through a fiber transfer channel III and a fiber transfer channel IV in sequence, short fibers A are intermittently fed into the fiber transfer channel III via through holes III by using a high-pressure airflow I, short fibers B are intermittently fed into the fiber transfer channel IV via through holes IV by using a high-pressure airflow II, the colors of the short fibers A and the short fibers B are different, and the feeding time of the short fibers A and the short fibers B is controlled, so that the short fibers A and the short fibers B are respectively combined with different length sections of the filament multifilament yarns, to obtain the segment colored pile yarn. The prepared segment colored pile yarn is mainly composed of filament multifilament yarns, and fluffs I and fluffs II that are located on the surfaces of the filament multifilament yarns. The fluffs I and the fluffs II are located in different length sections of the filament multifilament yarns, and the length sections of the filament multifilament yarns where the fluffs I are located and the length sections of the filament multifilament yarns where the fluffs II are located are alternately arranged. The method for preparing the pile yarn in the present invention is simple and has a wide range of application.
D02G 3/34 - Filés ou fils comportant des boutons, des grosseurs, des spirales, des boucles, des flammes et autres effets irréguliers ou décoratifs, c.-à-d. filés ou fils à effet
D01H 4/02 - Métiers à filer à bout libre ou dispositions pour conférer une torsion à des fibres séparées à partir de rubans et se déplaçant d'une manière indépendanteDispositifs de rattache à cet effetGuipage de fils à âme continus avec des fibres par des techniques de filature à bout libre conférant une torsion par un fluide, p. ex. par un tourbillon d'air
4.
METHOD FOR PREPARING POLYESTER FIBER UNEASY TO PRODUCE MICROPLASTICS DURING USE
The present invention relates to a method for preparing a polyester fiber uneasy to produce microplastics during use, comprising: mixing fiber-grade polyester with a self-healing polymer, and then carrying out melt extrusion, cooling, curing, oil application, and stretching processes to prepare a polyester fiber uneasy to produce microplastics during use, wherein the self-healing polymer is a block copolymer having an ordered structure and is composed of non-ionic polyester chain segments, ionic polyester chain segments and polysiloxane chain segments, and different types of chain segments and the same type of chain segments in the non-ionic polyester chain segments, ionic polyester chain segments and polysiloxane chain segments are linked by ester bonds, and two ends of the polysiloxane chain segment are hydroxyl-terminated. In the present invention, a self-healing polymer is introduced into a polyester spinning melt, and a polyester fiber material having self-healing properties is designed and developed; on the one hand, the wear resistance of the fiber material is improved, and on the other hand, self-healing is carried out for possible damage that may occur during use, thereby remarkably inhibiting fiber-based microplastics.
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
D01F 1/10 - Autres agents modifiant les propriétés de ces filaments
C08G 77/445 - Polymères séquencés ou greffés contenant des segments de polysiloxanes contenant des segments de polyesters
C08G 77/42 - Polymères séquencés ou greffés contenant des segments de polysiloxanes
5.
QUATERNIZED BIS(2-HYDROXYETHYL) TEREPHTHALATE, AND PREPARATION METHOD THEREFOR AND USE THEREOF
The present invention relates to quaternized bis(2-hydroxyethyl) terephthalate, and a preparation method therefor and the use thereof. The preparation method for quaternized bis(2-hydroxyethyl) terephthalate comprises: firstly using a protonic acid and a Lewis acid for concerted catalysis, subjecting bis(2-hydroxyethyl) terephthalate to monochloromethylation using paraformaldehyde so as to obtain a monochloromethylation product, and subjecting the monochloromethylation product to quaternization so as to obtain quaternized bis(2-hydroxyethyl) terephthalate. The use thereof is to subject the quaternized bis(2-hydroxyethyl) terephthalate to condensation polymerization so as to prepare quaternized and modified cationic polyethylene terephthalate. The method of the present invention can realize simple preparation; the product of the present invention has a high monochloromethylation yield; and the modified polyester obtained from the use of the present invention has good antibacterial, antistatic and dyeing properties.
C07C 229/38 - Composés contenant des groupes amino et carboxyle liés au même squelette carboné ayant des groupes amino liés à des atomes de carbone acycliques et des groupes carboxyle liés à des atomes de carbone de cycles aromatiques à six chaînons du même squelette carboné
C08G 63/685 - Polyesters contenant des atomes autres que le carbone, l'hydrogène et l'oxygène contenant de l'azote
C07C 227/08 - Formation de groupes amino dans des composés contenant des groupes carboxyle par des réactions d'addition ou de substitution, sans augmentation du nombre d'atomes de carbone dans le squelette carboné de l'acide par réaction d'ammoniac ou d'amines avec des acides contenant des groupes fonctionnels
C07C 67/343 - Préparation d'esters d'acides carboxyliques par modification de la partie acide de l'ester sans introduction d'un groupe ester par isomérisationPréparation d'esters d'acides carboxyliques par modification de la partie acide de l'ester sans introduction d'un groupe ester par modification de la taille du squelette carboné par augmentation du nombre d'atomes de carbone
C07C 67/08 - Préparation d'esters d'acides carboxyliques par réaction d'acides carboxyliques ou d'anhydrides symétriques avec le groupe hydroxyle ou O-métal de composés organiques
C07C 69/76 - Esters d'acides carboxyliques dont un groupe carboxyle estérifié est lié à un atome de carbone d'un cycle aromatique à six chaînons
The present invention relates to an ionic polyester masterbatch carrier and a preparation method therefor. The ionic polyester masterbatch carrier is a block copolymer having an ordered structure, and consists of nonionic polyester chain segments and ionic polyester chain segments, wherein different nonionic polyester chain segments are connected via ester bonds, different ionic polyester chain segments are connected via ester bonds, and the nonionic polyester chain segments and the ionic polyester chain segments are connected via ester bonds, the total number of block segments in the block copolymer being 5-20, and the molar ratio of the nonionic polyester chain segments to the ionic polyester chain segments being 2:8-8:2. The preparation method comprises: first, synthesizing a nonionic polyester esterified product and an ionic polyester esterified product by means of esterification reactions separately, then the nonionic polyester esterified product and the ionic polyester esterified product undergoing a polycondensation reaction so as to generate a block copolymer, namely the ionic polyester masterbatch carrier. The method of the present invention is easy to carry out; the prepared ionic polyester masterbatch has a self-healing function, and when being introduced as a carrier into functional materials such as carbon nanotubes, can achieve homogeneous dispersion without adding a dispersing agent.
C08G 81/00 - Composés macromoléculaires obtenus par l'interréaction de polymères en l'absence de monomères, p. ex. polymères séquencés
C08G 63/688 - Polyesters contenant des atomes autres que le carbone, l'hydrogène et l'oxygène contenant du soufre
D01F 1/10 - Autres agents modifiant les propriétés de ces filaments
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
7.
PREPARATION METHOD FOR HIGH-STRENGTH BIODEGRADABLE POLYESTER FIBER
The present invention relates to a preparation method for a high-strength biodegradable polyester fiber. An ionic copolyester is added into a biodegradable polyester for melt spinning to prepare a high-strength biodegradable polyester fiber; the amount of the ionic copolyester added is 1-10% of the mass of the biodegradable polyester; the ionic copolyester is composed of nonionic polyester segments and sulfonate ionic polyester segments, and connection between different nonionic polyester segments, between different ionic polyester segments, and between a nonionic polyester segment and an ionic polyester segment is achieved by means of an ester bond; the number of repeating units of the nonionic polyester segments is 4-10, and the number of repeating units of the sulfonate ionic polyester segments is 2-8; and the intrinsic viscosity of the ionic copolyester is 0.55-0.85 dl/g. According to the present invention, the ionic copolyester is introduced into the biodegradable polyester, thereby achieving continuous and stable forming of fibers, and remarkably enhancing the mechanical strength of fibers.
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
C08G 63/688 - Polyesters contenant des atomes autres que le carbone, l'hydrogène et l'oxygène contenant du soufre
The present invention relates to the preparation of an ionic copolymerized flame-retardant polyester masterbatch and the use in fibers. The ionic copolymerized flame-retardant polyester masterbatch is generated by subjecting a phosphorus-containing polyester chain segment oligomer and a sulfonate-containing ionic bond chain segment oligomer to a diisocyanate chain extension reaction. The ionic copolymerized flame-retardant polyester masterbatch is a block copolymer with a total number of blocks of 6-12. The ionic copolymerized flame-retardant polyester masterbatch is composed of phosphorus-containing polyester chain segments and sulfonate-containing ionic bond chain segments, wherein the molar weight percentage of the sulfonate-containing ionic bond chain segments relative to the phosphorus-containing polyester chain segments is 15-45%, and ester bonds are used for achieving linking between different phosphorus-containing polyester chain segments, between different sulfonate ionic bond chain segments, and between phosphorus-containing polyester chain segments and sulfonate ionic bond chain segments. The use thereof comprises: adding the ionic copolymerized flame-retardant polyester masterbatch to a polyester melt and performing spinning to prepare modified polyester fibers. The present invention ensures good compatibility with a spinning polyester melt and spinnability, and the prepared modified polyester fibers have good mechanical properties and flame retardancy.
C08G 63/692 - Polyesters contenant des atomes autres que le carbone, l'hydrogène et l'oxygène contenant du phosphore
C08G 63/688 - Polyesters contenant des atomes autres que le carbone, l'hydrogène et l'oxygène contenant du soufre
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
D01F 1/07 - Addition de substances à la solution de filage ou à la masse fondue pour fabriquer des filaments incombustibles ou ininflammables
9.
ACID-DYEABLE COPOLYESTER AND PREPARATION METHOD THEREFOR
122 repeating unit. The preparation method of the present invention is simple, the product of the present invention can be dyed by acid dyes at normal temperature and normal pressure, has high dye uptake, high color fastness and good thermal stability, and can undergo mixed dyeing with natural fibers such as cotton, wool, and silk.
The present invention relates to a method for producing profiled fibers having a low broken filament rate by a polyester FDY process. In producing profiled fibers by an FDY process, transverse and longitudinal positions of filament guide porcelain members on a pre-interlacing filament guide frame are adjusted during filament path operation, so that tows are kept vertical in a pre-interlacer and achieve an optimal shaking effect, so as to produce the profiled fibers having a low broken filament rate; if the profiled fibers are triangular profiled fibers, the broken filament rate is 0.35-0.65 %; if the profiled fibers are trilobal profiled fibers, the broken filament rate is 0.85-1.25 %; and if the profiled fibers are flat profiled fibers, the broken filament rate is 0.5-0.85%. The method of the present invention reduces broken filaments generated by collisions with the pre-interlacer in a tow shaking process, looped and broken filaments formed by tow looping or breaking caused by tangling and collisions of monofilaments, and broken filaments generated in the hot roller stretching process due to uneven oiling of tows, thereby improving the quality of products.
D01F 6/84 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits de copolycondensation à partir de copolyesters
C08G 63/86 - Germanium, antimoine ou leurs composés
C08G 63/91 - Polymères modifiés par post-traitement chimique
D01D 5/08 - Méthodes de filage à partir de masses en fusion
D01F 11/08 - Post-traitement chimique de filaments, ou similaires, faits par l’homme, pendant leur fabrication de polymères synthétiques de composés macromoléculaires obtenus par des réactions faisant intervenir uniquement des liaisons non saturées carbone-carbone
12.
LOW-THERMAL-SHRINKAGE POLYESTER INDUSTRIAL YARN AND PREPARATION METHOD THEREOF
A low-thermal-shrinkage polyester industrial yarn and preparation method thereof are provided. The low-thermal-shrinkage polyester industrial yarn is prepared by spinning and winding a modified polyester after solid-state polycondensation to increase viscosity. The preparation method of the modified polyester includes: after uniformly mixing terephthalic acid, ethylene glycol, 2,5-pyridinedicarboxylic acid and copper chloride, successively performing an esterification reaction and a polycondensation reaction to obtain the modified polyester. The polyester segments of the prepared low-thermal-shrinkage polyester industrial yarn comprises a terephthalic acid segment, an ethylene glycol segment and a 2,5-pyridinedicarboxylic acid segment, and 2,5-pyridinedicarboxylic acid segments of different polyester segments are coordinated by Cu2+. The molar ratio of the terephthalic acid segment to the 2,5-pyridinedicarboxylic acid segment is 1:(0.03-0.05). The O atom on a carbonyl group and the N atom on the pyridine of the 2,5-pyridinedicarboxylic acid segment are involved in the coordination.
D02G 3/02 - Filés ou fils caractérisés par la matière ou par les matières dont ils sont composés
D02G 3/44 - Filés ou fils caractérisés par la destination pour laquelle ils ont été conçus
D01D 5/098 - Méthodes de filage à partir de masses en fusion avec étirage simultané
D01F 6/84 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits de copolycondensation à partir de copolyesters
A tow colorimetric method and a yarn colorimetric machine. The tow colorimetric method comprises: separately winding a tow A and a tow B on a tow collection device to form a tow A strip and a tow B strip which are arranged in parallel, and after observing a color difference between the tow A strip and the tow B strip under a light source, determining a color difference level of the tow A strip and the tow B strip. The yarn colorimetric machine comprises a tow collection device, the tow collection device being a reel (4), the reel (4) comprising n plates, n being a positive integer greater than 2, the n plates being distributed around an axis x, the n plates each comprising a group of opposite edges which are respectively an edge a and an edge b, the edge b being relatively farther away from the axis x relative to the edge a, the edge b being parallel to the axis x, and edges b of the n plates forming n side edges of an n-sided prism. The tow colorimetric method can improve the quality of flat yarn products, and help customers to reduce quality reduction of follow-up products caused by color differences; and the yarn colorimetric machine can solve the problem of difficulty in distinguishing slight color differences.
2). The molar ratio of the terephthalic acid segment to the 2-(4-pyridine) terephthalic acid segment is 1:(0.03-0.05). The N atom on the pyridine of the 2-(4-pyridine) terephthalic acid segment is involved in coordination. Metal ions are coordinated with 2-(4-pyridine) terephthalic acid to greatly reduce the creep degree of the polyester fiber.
D02G 3/02 - Filés ou fils caractérisés par la matière ou par les matières dont ils sont composés
D01D 5/16 - Méthodes de filage par étirage utilisant des rouleaux, ou dispositifs mécaniques similaires, p. ex. dispositifs à doigts de friction
D01F 6/84 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits de copolycondensation à partir de copolyesters
15.
PILE YARN, PREPARATION METHOD THEREFOR AND USE THEREOF
A pile yarn, a preparation method therefor and the use thereof, the method comprising: during a process that a multifilament (1) moves at a constant speed, feeding staple fibers into a fiber conveying channel (5) of the multifilament (1) by using high-pressure airflow so as to prepare a pile yarn, the number of monofilaments in the multifilament (1) being 30-50, the intensity of pressure of the high-pressure airflow being 1-2 MPa, an included angle of 85-90°being formed between a feeding direction of the staple fibers and a conveying direction of the multifilament (1), and an average length of the staple fibers in the prepared pile yarn exposed out of the monofilament at the outermost side of the multifilament of being 3-5 mm. The use: the pile yarns are all or part of raw materials, and are processed according to a general processing technique so as to prepare a pile fabric, the general processing technique being a technique not comprising an electrostatic flocking or pile cutting procedure. The method may directly prepare the pile yarn, and shortens a weaving process of the pile fabric. The naps of the pile yarn are evenly distributed, and show high binding strength. The pile fabric has good heat retention performance and high air permeability.
A composite interlaced filament yarn and an interlacing method therefor. The interlaced filament yarn is a filament yarn subjected to an interlacing process, the filament yarn is a multiple-filament yarn, and the composite interlaced filament yarn is composed of a plurality of continuous repeat units in the longitudinal length; each repeat unit is composed of a splitting part I (2), an interlacing part I (3), a splitting part II (4) and an interlacing part II (5) which are connected in sequence; the interlacing intensity of the interlacing part I (3) is different from the interlacing intensity of the interlacing part II (5). The interlacing method comprises: sequentially passing a composite filament yarn that is not subjected to an interlacing process through a tensioner (6) to adjust the pre-tension of the composite filament yarn, and passing same through a yarn path (9) of a nozzle (7) and then winding same by means of a winding roller (8), so as to obtain the composite interlaced filament yarn. In the method, a nozzle hole I (10) and a nozzle hole II (11) are formed in the nozzle (7); when the composite filament yarn passes through the yarn path (9) of the nozzle (7), the nozzle hole I (10) and the nozzle hole II (11) intermittently inject a compressed airflow into the yarn path (9), wherein, per single injection, the time at which the nozzle hole I (10) and the nozzle hole II (11) inject the airflow is identical, the injection interval is identical, and the pressure intensity of injection of the compressed airflow into the yarn path (9) by the nozzle hole I (10) is greater than the pressure intensity of injection of the compressed airflow into the yarn path (9) by the nozzle hole II (11). By means of the interlacing method for a composite filament yarn, the application range of the interlacing technology is widened.
D02J 1/08 - Enlacement de filaments constituants sans provoquer leur rupture, p. ex. à l'aide de jets d'air turbulents
D03D 15/49 - Tissus caractérisés par la matière, la structure ou les propriétés des fibres, des filaments, des filés, des fils ou des autres éléments utilisés en chaîne ou en trame caractérisés par la structure des filés ou des fils texturéeTissus caractérisés par la matière, la structure ou les propriétés des fibres, des filaments, des filés, des fils ou des autres éléments utilisés en chaîne ou en trame caractérisés par la structure des filés ou des fils onduléeTissus caractérisés par la matière, la structure ou les propriétés des fibres, des filaments, des filés, des fils ou des autres éléments utilisés en chaîne ou en trame caractérisés par la structure des filés ou des fils crêpée
17.
METHOD FOR IMPROVING FASTNESS OF INTERLACING OF INTERLACING MULTIFILAMENT
A method for improving fastness of interlacing of interlacing multifilament using a DTY spinning process. The multifilament (1) which is not subjected to interlacing is adjusted by a tensioner (2) for a pre-tension, is held by a feeding roller (3) and a feeding leather roller (4), is fed into and passes through a yarn channel (6) of a nozzle (5), is held and led out by a yarn guiding roller (8) and a yarn guiding leather roller (9), and is wound by a winding roller (10), so as to obtain the interlacing multifilament; and a connecting line between a holding point between the feeding roller (3) and the feeding leather roller (4) and a holding point between the yarn guiding roller (8) and a yarn guiding leather roller (9) coincides with a central axis of the yarn channel (6), the feeding roller (3) and the yarn guiding roller (8) has an equal linear speed, and when the multifilament passes through the yarn channel (6) of the nozzle (5), a nozzle port I (11) and a nozzle port II (12) respectively intermittently inject a compressed airflow into a yarn channel A and a yarn channel B, and the pressure intensity of the compressed airflow injected into the yarn channel (6) by the nozzle port I (11) is greater than the pressure intensity of the compressed airflow injected into the yarn channel (6) by the nozzle port II (12). The multifilament after interlacing is not prone to loosening during weaving, which can achieve weaving without twisting and starching, thereby shortening a weaving process.
A method for preparing a POY/FDY polyester-polyester composite yarn, in which polyester POY and polyester FDY are combined and then wound to form a POY/FDY polyester-polyester composite yarn. Before the polyester POY is combined with the polyester FDY, the polyester POY is sequentially subjected to the processes of cooling, oiling, yarn guiding, and pre-interlacing; a yarn guide roller (4) used during the yarn guide process is arranged below an oiling position (3), and the height difference between the yarn guide roller and the oiling position (3) is 20-30 mm; a spinneret is located above the oiling position (3), and the height difference between the spinneret and the oiling position (3) is 90-110 mm; a pre-interlacing device (5) used in the pre-interlacing process is located below the yarn guide roller (4), and the height difference between the pre-interlacing device (5) and the yarn guide roller (4) is 3500-3600 mm. The yarn guide roller (4) is additionally provided behind the oiling position, thereby effectively adjusting the POY spinning tension; and the boiling water shrinkage of a product POY/FDY polyester-polyester composite yarn is 45.0±5.0%, such that the product POY/FDY polyester-polyester composite yarn can be widely used for wool-like, silk-like and high-quality knitted fabrics.
D02G 3/44 - Filés ou fils caractérisés par la destination pour laquelle ils ont été conçus
D02G 3/04 - Fils provenant de mélange ou autres filés ou fils contenant des composants faits de matières différentes
D02G 1/18 - Production de fibres, filaments, filés ou fils, crêpés ou ondulés ou leur donnant de telles caractéristiques latentes par combinaison de fibres, filaments ou filés possédant des caractéristiques de retrait différentes
A method for manufacturing a black cotton-like fibers, which adopts a DTY elasticity enhancing process. Carbon black-containing polyester POY and FDY fibers (1) sequentially pass through a first filament guide (2), a godet roller (3), a tensioner (4), a first filament supply roller (5), a pre-interlacer (6), a second filament supply roller (7), a first deformation hot box (8), a cooling plate (9), a false twister (10), a third filament supply roller (11), a middle interlacer (12), a shaping hot box (13), a shaping filament supply roller (14) and an oiler (15), and are wound to obtain black cotton-like cotton fibers. The first filament guide (2) is a filament guide wheel. In the movement process, the tow contacts the groove bottom of the first filament guide (2) to drive the first filament guide (2) to rotate. The tensioner (4) is a magnetic tensioner. In the movement process, the tow contacts the groove bottom of the filament guide wheel provided with the tensioner (4), and the inferior angle formed before and after the tow contacts the groove bottom is between 140 and 160 degrees. The tensile force of the tensioner (4) is set to 7 to 10 cN. The linear speed ratio of the first filament supply roller (5) to the second first filament supply roller (7) is 1.03 to 1.04. The method can reduce the abrasion of the first filament guide (2), and improve the interlacing degree of the tow, and is free from loose filaments.
D02G 1/02 - Production de fibres, filaments, filés ou fils, crêpés ou ondulés ou leur donnant de telles caractéristiques latentes par retordage, fixage de la torsion et détorsion, c.-à-d. en conférant une fausse torsion
D02G 3/44 - Filés ou fils caractérisés par la destination pour laquelle ils ont été conçus
D02G 3/04 - Fils provenant de mélange ou autres filés ou fils contenant des composants faits de matières différentes
D01F 1/02 - Addition de substances à la solution de filage ou à la masse fondue
20.
METHOD FOR PREPARING FULL-DULL COTTON-LIKE POLYESTER FIBERS
A method for preparing full-dull cotton-like polyester fibers. The full-dull cotton-like polyester fibers are prepared from full-dull polyester POY and FDY fibers (1), which are sequentially subjected to/passed through the following procedures/devices: a first yarn guide device (2), a yarn guide pipe (3), a second yarn guide device (4), a first yarn feeding roller (5), pre-interlacing (6), a second yarn feeding roller (7), a first deformation heat box (8), a cooling plate (9), a false twister (10), a third yarn feeding roller (11), an intermediate interlacing device (12), a setting heat box (13), a setting yarn feeding roller (14), oiling (15), and DTY winding forming, wherein the first yarn guide device (2) and the second yarn guide device (4) are both yarn guide wheels; a tow is wound around the first yarn feeding roller (5) 2-3 times; an inferior angle formed by the tow before and after the tow is in contact with a groove bottom of the second yarn guide device (4) is 140-160 degrees; and the linear velocity ratio of the first yarn feeding roller (5) to the second yarn feeding roller (7) is 1.05-1.06. According to the method, the abrasion of the first yarn guide device (2) and the second yarn guide device (4) can be reduced, the tow interlacing degree is improved, and there is no net scattering; therefore, the prepared cotton-like polyester fibers have a good performance.
D02G 3/44 - Filés ou fils caractérisés par la destination pour laquelle ils ont été conçus
D02G 3/04 - Fils provenant de mélange ou autres filés ou fils contenant des composants faits de matières différentes
D02G 1/02 - Production de fibres, filaments, filés ou fils, crêpés ou ondulés ou leur donnant de telles caractéristiques latentes par retordage, fixage de la torsion et détorsion, c.-à-d. en conférant une fausse torsion
21.
METHOD FOR IMPROVING DYEING PERFORMANCE OF POLYETHYLENE TEREPHTHALATE FIBER
The present invention relates to a method for improving the dyeing performance of polyethylene terephthalate fiber, comprising: first, preparing modified polyethylene terephthalate using dimethyl terephthalate, ethylene glycol, glycerol and 1,2-propanediol isobutyl-POSS as raw materials, and using ethylene glycol antimony as a catalyst; then, producing modified polyethylene terephthalate fiber from the obtained modified polyethylene terephthalate, and finally dyeing the modified polyethylene terephthalate fiber. The molar ratio of dimethyl terephthalate, ethylene glycol, glycerol and 1,2-propanediol isobutyl-POSS is 1:0.960-0.984:0.015-0.035:0.001-0.005, and a dye uptake rate of the modified polyethylene terephthalate fiber during dyeing is 17.02-18.49 mg·g-1. In the method of the present invention, by means of using a certain amount of glycerol and 1,2-propanediol isobutyl-POSS as monomers, which are copolymerized with dimethyl terephthalate to obtain an easily-dyed PET fiber, the use of complex comonomers is avoided. The present invention has a simple process, strong spinnability of the polymer melt, and high potential for large-scale production.
D01F 6/84 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits de copolycondensation à partir de copolyesters
D06P 1/16 - Procédés généraux de teinture ou d'impression des textiles ou procédés généraux de teinture du cuir, des fourrures ou des substances macromoléculaires solides de toutes formes, classés selon les teintures, les pigments ou les substances auxiliaires utilisés utilisant des matières colorantes en dispersion, p. ex. acétate
D06P 3/54 - Polyesters utilisant des colorants en dispersion
C08G 63/695 - Polyesters contenant des atomes autres que le carbone, l'hydrogène et l'oxygène contenant du silicium
22.
PREPARATION METHOD FOR RECYCLED POLYESTER FIBER COMPRISING TRACER
The present invention relates to a preparation method for a recycled polyester fiber comprising a tracer. After ethylene glycol comprising a tracer is mixed with a purified waste PET depolymerization product, a spinning melt is obtained by esterification or transesterification and condensation polymerization, then a recycled polyester fiber comprising a tracer is obtained by spinning; or waste PET is mixed with ethylene glycol Ⅰ, alcoholysis reaction is performed, an alcoholysis product is purified, ethylene glycol ⅠⅠ is added to the purified alcoholysis product, a spinning melt is obtained by transesterification and condensation polymerization, then a recycled polyester fiber comprising a tracer is obtained by spinning, wherein the ethylene glycol comprising the tracer is isotopically labeled 13C-ethylene glycol, and the addition amount of the ethylene glycol comprising the tracer is 1-3 wt% of the content of ethylene glycol in the waste PET depolymerization product. In the present invention, a basic constituent element, i.e., a carbon element, of polyester is labelled by using an isotope labelling and tracing method, and other specific elements and functional groups are not added, so that durable traceability is achieved, the stability of back-end spinning operation is good, and the dyeing uniformity is good.
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
D01F 1/10 - Autres agents modifiant les propriétés de ces filaments
D01D 5/08 - Méthodes de filage à partir de masses en fusion
23.
Recycled polyester filament and preparation method therefor
A recycled polyester filament and preparation method therefor are disclosed. In the process of preparing a fiber from a recycled polyester according to the FDY process, the ring-blowing is used for cooling, and the distribution of spinneret holes on the spinneret is controlled to meet certain conditions, then the recycled polyester filament is obtained by relaxation heat treatment after a fully drawn yarn is produced. The spinneret holes are C-shaped spinneret holes and circular spinneret holes, the cross-section of the C-shaped spinneret hole is composed of an outer arc, an inner arc, and two line segments, and two endpoints of the outer arc are A and B respectively; wherein the certain conditions include: all the spinneret holes are distributed in concentric circles, and the C-shaped spinneret holes are located on the outermost circle, rotating at different angles and randomly distributed.
D01F 6/62 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits d'homopolycondensation à partir de polyesters
D01D 5/08 - Méthodes de filage à partir de masses en fusion
D01D 5/088 - Refroidissement des filaments, fils ou similaires, à la sortie des filières
D01D 5/22 - Formation des filaments, fils ou similaires à structure crêpée ou onduléeFormation des filaments, fils ou similaires à structure imitant celle de la laine
D01D 5/253 - Formation des filaments, fils ou similaires à section transversale non circulaireEnsembles de filage à cet effet
D02J 13/00 - Chauffage ou refroidissement de filaments, filés, fils câblés, cordes ou similaires ne correspondant spécifiquement à aucun des procédés prévus dans la présente sous-classe
24.
Degradable polyester fiber and its preparation method
2 powder by ring-blowing after extruded from a trilobal spinneret hole on a spinneret, and manufacture a fully drawn yarn (FDY) according to an FDY process with the PET melt, then the degradable polyester fiber is prepared after a relaxation heat treatment. The trilobal spinneret hole on the spinneret has three leaves with unequal lengths and angles, and all the trilobal spinneret holes are distributed in concentric circles, with a center line of the leaf opposite to the smallest angle in each trilobal spinneret hole passing through the center of the circle, and pointing away from the center of the circle. The process is simple, and the obtain fiber has good performances in degradation and elasticity.
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
D01D 5/22 - Formation des filaments, fils ou similaires à structure crêpée ou onduléeFormation des filaments, fils ou similaires à structure imitant celle de la laine
D01D 5/088 - Refroidissement des filaments, fils ou similaires, à la sortie des filières
A preparation method of self-crimping elastic combined filament yarns for knitting is disclosed, wherein the combined filament yarns are extruded from the same spinneret; a first fiber-forming polymer melt is divided into two ways, one is directly extruded after distribution; and the other is extruded after distribution by side-by-side composite spinning together with a second fiber-forming polymer melt; the first fiber-forming polymer and the second fiber-forming polymer are compatible or partially compatible; on the same spinneret, a ratio of the number of spinneret holes m for direct extrusion to the number of spinneret holes n for extrusion after distribution by side-by-side composite spinning is 1:(5-10); the self-crimping elastic combined filament yarns for knitting are prepared according to specific spinning processes, wherein the combined filament yarn mainly comprises a first fiber-forming polymer monofilament and a first/second fiber-forming polymer side-by-side composite monofilament; wherein the monofilament crimping directions are randomly distributed.
D01D 5/253 - Formation des filaments, fils ou similaires à section transversale non circulaireEnsembles de filage à cet effet
D01F 6/60 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits d'homopolycondensation à partir de polyamides
D01F 6/62 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits d'homopolycondensation à partir de polyesters
D02G 1/18 - Production de fibres, filaments, filés ou fils, crêpés ou ondulés ou leur donnant de telles caractéristiques latentes par combinaison de fibres, filaments ou filés possédant des caractéristiques de retrait différentes
D02G 1/20 - Combinaisons de plusieurs des opérations ou des appareillages mentionnés ci-dessusTraitements ultérieurs pour fixer la frisure ou l’ondulation
D02J 1/22 - Étirage ou tension, retrait ou relâchement, p. ex. par utilisation d'appareils sur ou sous-alimentés ou empêchant l'étirage
D02J 13/00 - Chauffage ou refroidissement de filaments, filés, fils câblés, cordes ou similaires ne correspondant spécifiquement à aucun des procédés prévus dans la présente sous-classe
D01D 5/32 - Structure "côte-à-côte"Ensembles de filage à cet effet
D01D 5/08 - Méthodes de filage à partir de masses en fusion
D01D 5/22 - Formation des filaments, fils ou similaires à structure crêpée ou onduléeFormation des filaments, fils ou similaires à structure imitant celle de la laine
D01F 8/12 - Filaments, ou similaires, faits par l’homme, conjugués, c.-à-d. à plusieurs composantsLeur fabrication à partir de polymères synthétiques avec au moins un polyamide comme constituant
D01F 8/14 - Filaments, ou similaires, faits par l’homme, conjugués, c.-à-d. à plusieurs composantsLeur fabrication à partir de polymères synthétiques avec au moins un polyester comme constituant
D02G 1/00 - Production de fibres, filaments, filés ou fils, crêpés ou ondulés ou leur donnant de telles caractéristiques latentes
The present invention relates to an anti-abrasion polyester resin and a preparation method therefor. The preparation method comprises: synthesizing a polyester polymer by using a melt two-step method, the raw materials being neopentyl glycol, ethylene glycol, diphenylsilanediol, trimethylolpropane and terephthalic acid; 2,5-furandicarboxylic acid, isophthalic acid, 2,6-pyridinedicarboxylic acid, trimellitic anhydride, a catalyst, a vulcanization accelerator, ferric chloride, and basalt fibers; coating the polyester polymer in a molten state onto a basalt fiber unidirectional cloth to prepare a basalt long fiber reinforced polyester coating, subjecting same to heat treatment, cutting same after cooling, and grinding same to obtain fiber reinforced polyester powder particles, i.e. the anti-abrasion polyester resin. Fe3+ coordination between 2,6-pyridinedicarboxylic acid segments of different polyester segments in the anti-abrasion polyester resin improves the strength and abrasion resistance of the polyester powder. A coating is prepared from the anti-abrasion polyester resin, and is subjected to an abrasion resistant test and a salt spray resistant test. The abrasion resistance is measured to be 1.87 to 2.13 L/μm, and the results of the salt spray test are: no cracking, no foaming, no whitening, and no peeling for 1000 hours.
The present invention relates to a high-strength and low-elongation polyester industrial yarn and a preparation method therefor. Modified polyester is subjected to solid-state polycondensation, spinning, winding, and complexing treatment to prepare a high-strength and low-elongation polyester industrial yarn. A method for complexing treatment is: soaking wound fibers in a complexing agent aqueous solution having a concentration of 0.1-0.2 mol/L; the condition for complexing treatment is that if complexing treatment is to be performed at 80-100ºC for 48-72 hours, the concentration of the complexing agent aqueous solution is 0.1-0.2 mol/L; a polyester chain segment of the prepared high-strength, low-elongation, and thermal stable polyester industrial yarn comprises a terephthalic acid chain segment, an ethylene glycol chain segment, and a 2,5-pyridinedicarboxylic acid chain segment, and 2,5-pyridinedicarboxylic acid chain segments of different polyester chain segments are complexed by means of Fe3+; the molar ratio of the terephthalic acid chain segment to the 2,5-pyridinedicarboxylic acid chain segment is 1:0.05-0.07; and O atoms on two carbonyls and an N atom on pyridine in the 2,5-pyridinedicarboxylic acid chain segment participate in the complexing. In the present invention, physical crosslinking points in the polyester industrial yarn are increased by complexing the 2,5-pyridinedicarboxylic acid chain segments of different polyester chain segments by means of Fe3+, such that the breaking strength is greatly improved.
D01F 6/84 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits de copolycondensation à partir de copolyesters
C08G 63/685 - Polyesters contenant des atomes autres que le carbone, l'hydrogène et l'oxygène contenant de l'azote
D06M 11/28 - Halogénures d'éléments des groupes 8, 9, 10 ou 18 du tableau périodique
The present invention relates to a high-strength heat-stable polyester industrial filament and a preparation method therefor. The high-strength heat-stable polyester industrial filament is prepared by performing spinning, winding and coordination treatment on a modified polyester after solid-phase polycondensation and tackifying treatment. The coordination treatment method comprises: immersing wound fibers in an aqueous solution of a coordinating agent, the concentration of the aqueous solution of the coordinating agent being 0.1-0.2 mol/L. Conditions for the coordination treatment comprise 80 °C-100 °C for 48-72 hours, and a concentration of the aqueous solution of the coordinating agent of 0.1-0.2 mol/L. The polyester segments of the prepared high-strength heat-stable polyester industrial filament include terephthalic acid segments, ethylene glycol segments and 2,6-pyridinedicarboxylic acid segments. Furthermore, 2,6-pyridinedicarboxylic acid segments of different polyester segments are coordinated by means of Fe3+, the molar ratio of the terephthalic acid segment to the 2,6-pyridinedicarboxylic acid segment is 1: 0.03-0.05, and the O atom on the two carbonyl groups and the N atom on the pyridine of the 2,6-pyridinedicarboxylic acid segment are involved in the coordination. The present invention uses a coordination technique, and after Fe3+ forms a coordination bond with pyridine, the glass transition temperature of the polyester fiber is increased, and the thermal stability is enhanced.
D01F 6/84 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits de copolycondensation à partir de copolyesters
C08G 63/685 - Polyesters contenant des atomes autres que le carbone, l'hydrogène et l'oxygène contenant de l'azote
D06M 11/28 - Halogénures d'éléments des groupes 8, 9, 10 ou 18 du tableau périodique
The present invention relates to a flame-retardant polyester fiber for use in clothing and a preparation method therefor. A modified polyester is subjected to solid-phase polycondensation and tackifying to obtain a flame-retardant polyester fiber for use in clothing. A preparation method for a modified polyester comprises: uniformly mixing terephthalic acid, ethylene glycol, 2,6-pyridinedicarboxylic acid, a flame retardant 2-hydroxyethyl phenyl hypophosphite, and zinc chloride, and then performing an esterification reaction and a polycondensation reaction in sequence to obtain the modified polyester. The polyester chain segment of the prepared flame-retardant polyester fiber for use in clothing comprises a terephthalic acid chain segment, an ethylene glycol chain segment, a flame retardant 2-hydroxyethyl phenyl hypophosphite chain segment, and a 2,6-pyridinedicarboxylic acid chain segment, and the 2,6-pyridinedicarboxylic acid chain segments of different polyester chain segments are coordinated with Zn2+; the molar ratio of the terephthalic acid chain segment, the 2,6-pyridinedicarboxylic acid chain segment, and the flame retardant 2-hydroxyethyl phenyl hypophosphite chain segment is 1: 0.06-0.08: 0.03-0.05; in the 2,6-pyridinedicarboxylic acid chain segment, the O atom on a carbonyl group and the N atom on pyridine are involved in the coordination. According to the present invention, the thermal degradation temperature of the polyester is improved by means of coordination, thereby achieving the objective of effectively reducing molten droplets.
D01F 6/84 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits de copolycondensation à partir de copolyesters
C08G 63/692 - Polyesters contenant des atomes autres que le carbone, l'hydrogène et l'oxygène contenant du phosphore
The present invention relates to a high-barrier bottle-grade polyester and a preparation method therefor. Polyester chain segments of the high-barrier bottle-grade polyester comprise a terephthalic acid chain segment, an ethylene glycol chain segment and a 2,5-pyridine dimethanol chain segment. 2,5-pyridine dimethanol chain segments of different polyester chain segments are coordinated by means of Fe 3+, and the O atom on hydroxyl and the N atom on pyridine in the 2,5-pyridine dimethanol chain segments participate in coordination. The oxygen permeation coefficient of the high-barrier bottle-grade polyester is 13.35×10 -4to 15.60×10 -4cm 3/(m·0.1 MPa·24 h), and the heat-resistant temperature is 87-94ºC. The preparation method comprises: uniformly mixing terephthalic acid, ethylene glycol, 2,5-pyridine dimethanol and ferric chloride, and then successively subjecting same to an esterification reaction and a polycondensation reaction to prepare a modified polyester, and tackifying the modified polyester to obtain the high-barrier bottle-grade polyester. The high-barrier bottle-grade polyester of the present invention has a good barrier property and a high heat resistance.
The present invention relates to a method for prolonging a plate cleaning period of polyester fiber spinning, characterized in that: a polyester fiber spinning process is used, and a volatile matter suction pipe having one end communicated with a windless area is provided in the windless area in the spinning process; the volatile matter suction pipe mainly comprises outer pipes, vertical inner pipes, and a horizontal pipe; hole channels communicated with yarn outlet channels are respectively formed in opposite sides of the yarn outlet channels of a heat preservation plate in the windless area; the outer pipes are in one-to-one correspondence with the hole channels and are provided in the hole channels; an inner chamfer is formed at one end of each outer pipe; the end surface, having the inner chamfer formed, of each outer pipe is tangent to the wall of the heat preservation plate forming the yarn outlet channels; the vertical inner pipes are located in the outer pipes; one end surface of each vertical inner pipe is attached to each inner chamfer of each outer pipe; the horizontal pipe is communicated with the other end of each vertical inner pipe and is vertical to the vertical inner pipes; the horizontal pipe is connected to an exhaust pipe and a compressed air cleaning pipe by means of a three-way valve; and the exhaust pipe is communicated with a space having a temperature of 25-30°C. According to the method of the present invention, the plate cleaning period is prolonged from 24 h to 72 h or above compared with the condition that the volatile matter suction pipe is not used.
D01D 4/04 - Nettoyage des filières ou d'autres parties des ensembles de filage
D01D 5/24 - Formation des filaments, fils ou similaires à structure creuseEnsembles de filage à cet effet
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
The present invention relates to a heat-resistant polyester resin and a preparation method therefor. The heat-resistant polyester resin comprises a propylene glycol chain segment, a diethylene glycol chain segment, an isophthalic acid chain segment, a phthalic anhydride chain segment, a maleic anhydride chain segment, and a 2,5-pyridinedicarboxylic acid chain segment; the 2,5-pyridinedicarboxylic acid chain segments of different polyester chain segments are coordinated by means of Fe2+, and O atoms on two carbonyl groups and N atoms on pyridine of the 2,5-pyridinedicarboxylic acid chain segments participate in coordination; and the heat deflection temperature under load of the heat-resistant polyester resin is 240°C, and the combustibility of the heat-resistant polyester resin is UL-94-V-0. The method comprises: first uniformly mixing propylene glycol, diethylene glycol, isophthalic acid, phthalic anhydride, maleic anhydride, 2,5-pyridinedicarboxylic acid, esterification catalyst stannous oxalate, and ferrous chloride, then performing reactions to obtain an unsaturated polyester resin prepolymer, mixing the unsaturated polyester resin prepolymer, a crosslinking agent, an initiator, a flame retardant agent, and an enhancement material and performing extrusion to obtain regular granular plastic, and finally performing heat treatment to obtain the heat-resistant polyester resin.
32222; the polyester chain segment of the prepared high-strength creep-resistant polyester industrial fiber comprises a terephthalic acid chain segment, an oxalic acid chain segment and a 2-(4-pyridine)terephthalic acid chain segment, and the 2-(4-pyridine)terephthalic acid chain segments of different polyester chain segments are coordinated by means of metal ions (Ag+, Fe2+, Cu2+or Ni2); the molar ratio of the terephthalic acid chain segment to the 2-(4-pyridine)terephthalic acid chain segment is 1 : 0.03-0.05; and an N atom on the pyridine of the 2-(4-pyridine)terephthalic acid chain segment is involved in coordination. By means of the present invention, the metal ions are coordinated with 2-(4-pyridine)terephthalic acid such that the creep degree of a polyester fiber is greatly reduced.
D01F 6/84 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits de copolycondensation à partir de copolyesters
C08G 63/685 - Polyesters contenant des atomes autres que le carbone, l'hydrogène et l'oxygène contenant de l'azote
The present invention relates to an aging-resistant polyester film and a preparation method therefor. The aging-resistant polyester film is prepared from modified polyester according to a film preparation process; and the preparation method for the modified polyester comprises: uniformly mixing terephthalic acid, ethylene glycol, imidazole -4, 5- diformic acid and zinc chloride, and then performing an esterification reaction and a polycondensation reaction successively to obtain the modified polyester. The prepared aging-resistant polyester film comprises polyester chain segments of a terephthalic acid chain segment, an ethylene glycol chain segment and an imidazole -4, 5- diformic acid chain segment, and the imidazole -4, 5- diformic acid chain segment of the different polyester chain segment is coordinated by Zn2+; a molar ratio of the terephthalic acid chain segment to the imidazole -4, 5- diformic acid chain segment is 1: 0.05-0.07; and the imidazole -4, 5- diformic acid chain segment have O atoms on two carbonyl groups and N atoms on imidazole involved in the coordination. According to the present invention, a coordination bond is formed by Zn2+ and imidazole -4, 5- diformic acid, so that the aging resistance of the polyester film is effectively improved, the retention rate of tensile strength after aging for 500 hours is 96.5% or above, and the retention rate of elongation at break is 94.4% or above.
A low-thermal-shrinkage polyester industrial yarn and a preparation method therefor. The low-thermal-shrinkage polyester industrial yarn is prepared by carrying out solid-phase polycondensation tackifying on modified polyester, and then performing spinning and winding. The preparation method for the modified polyester is as follows: uniformly mixing terephthalic acid, ethylene glycol, 2,5-pyridinedicarboxylic acid, and copper chloride, and then carrying out esterification reaction and polycondensation reaction successively to obtain the modified polyester. Each polyester chain segment of the prepared low-thermal-shrinkage polyester industrial yarn comprises a terephthalic acid chain segment, an ethylene glycol chain segment, and a 2,5-pyridinedicarboxylic acid chain segment; the 2,5-pyridinedicarboxylic acid chain segments of different polyester chain segments are coordinated by means of Cu2+; the molar ratio of the terephthalic acid chain segment to the 2,5-pyridinedicarboxylic acid chain segment is 1:0.03 to 0.05; and in each 2,5-pyridinedicarboxylic acid chain segment, the O atom on a carbonyl group and the N atom on pyridine are involved in the coordination. The low-thermal-shrinkage polyester industrial yarn has better breaking strength and elongation at break while maintaining low thermal shrinkage, thus broadening the application range of the polyester industrial yarn.
D01F 6/84 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits de copolycondensation à partir de copolyesters
C08G 63/685 - Polyesters contenant des atomes autres que le carbone, l'hydrogène et l'oxygène contenant de l'azote
The present invention relates to a preparation method for a wavy fabric for the efficient generation of solar steam. The preparation method comprises: designing, with warp yarns and weft yarns as raw materials, the distribution of heald eyes corresponding to the warp yarns to be wavy distribution, and performing weaving, by means of a shuttleless weaver according to a weaving method for a single-layer woven fabric to form a wavy fabric for the efficient generation of solar steam, wherein during weaving, a heald lifting stroke is more than two times of a height difference between a wave crest and a wave trough in the wavy shape, and the tension of the warp yarns is more than 5 times of the tension of the weft yarns. The wavy fabric for the efficient generation of solar steam prepared by means of the method is a single-layer woven fabric formed by interweaving warp yarns and weft yarns; the entire single-layer woven fabric is of a corrugated plate-shaped structure; and after a portion of the wavy fabric is immersed in seawater along the thickness direction of the corrugated plate-shaped structure, the evaporation amount of water vapor under standard simulated sunlight is 1.25-1.46 kg/(m2·h), wherein the thickness of the wavy fabric immersed into the seawater accounts for 1/10 of the total thickness of the fabric.
D03D 1/00 - Tissus conçus pour faire des articles particuliers
D03D 21/00 - Tissus produits sur métiers à plumetis ou à brocher
D03D 15/50 - Tissus caractérisés par la matière, la structure ou les propriétés des fibres, des filaments, des filés, des fils ou des autres éléments utilisés en chaîne ou en trame caractérisés par les propriétés des filés ou des fils
D03D 13/00 - Tissus caractérisés par la disposition particulière des fils de chaîne ou de trame, p. ex. avec fils de trame incurvés, avec fils de chaîne discontinus, avec fils de chaîne ou de trame en diagonale
D06C 3/06 - Étirage, ramage ou étendage de tissus textilesProduction d'élasticité dans les tissus textiles par disques rotatifs, rouleaux ou appareils similaires
D03D 49/04 - Contrôle de la tension de la chaîne ou du tissu
D03D 49/12 - Commande de la tension de la chaîne par des moyens autres que le mécanisme de déroulement de la chaîne
37.
PREPARATION METHOD FOR ANTIMICROBIAL KNITTED FABRIC
A preparation method for an antimicrobial knitted fabric, comprising: adding spandex to a blended yarn formed by blending an antimicrobial polyester fiber and a modal fiber and weaving same to obtain a knitted single-sided fabric, and then successively carrying out pre-setting, pre-treatment, dyeing, dehydration, cutting, drying, setting, and pre-shrinking to obtain the antimicrobial knitted fabric. The antimicrobial knitted fabric comprises the following components in parts by weight: 25-40 parts of the antimicrobial polyester fiber, 50-70 parts of the modal fiber, and 5-10 parts of spandex. The polyester segments of the antimicrobial polyester fiber comprise terephthalic acid segments, ethylene glycol segments and terephthalic acid-2(4-pyridine) segments, and the terephthalic acid-2(4-pyridine) segments of different polyester segments are coordinated by means of Ag+. The N atom on pyridine of the terephthalic acid-2(4-pyridine) segments participates in the coordination. The preparation method uses the coordination technique to make Ag+ be firmly controlled in the polyester fiber, thereby enhancing the antimicrobial and deodorizing efficiency of an antimicrobial agent and the permanence thereof in the polyester fiber, and improving the durability of the antibacterial property. The antimicrobial knitted fabric has excellent properties, and is healthy and environmentally friendly.
D04B 1/14 - Autres tricots ou articles caractérisés principalement par l'emploi de matières spéciales pour le fil
D04B 1/18 - Autres tricots ou articles caractérisés principalement par l'emploi de matières spéciales pour le fil fils élastiques
D04B 21/00 - Procédés de tricotage chaîne pour la production de tricots ou articles qui ne dépendent pas de l'emploi de machines particulièresTricots ou articles définis par de tels procédés
D02G 3/04 - Fils provenant de mélange ou autres filés ou fils contenant des composants faits de matières différentes
D02G 3/44 - Filés ou fils caractérisés par la destination pour laquelle ils ont été conçus
D01F 6/84 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits de copolycondensation à partir de copolyesters
C08G 63/685 - Polyesters contenant des atomes autres que le carbone, l'hydrogène et l'oxygène contenant de l'azote
22. Polyester chain segments of the prepared polyester industrial yarn for a cable comprise a terephthalic acid chain segment, an oxalic acid chain segment and a 2,2-bipyridine-4,4-dicarboxylic acid chain segment, and 2,2-bipyridine-4,4-dicarboxylic acid chain segments of different polyester chain segments are coordinated by means of Ni2+. The molar ratio of the terephthalic acid chain segment to the 2,2-bipyridine-4,4-dicarboxylic acid chain segment is 1 : 0.03-0.05, and the N atom on the pyridine and the O atom on the carbonyl in the 2,2-bipyridine -4,4-dicarboxylic acid chain segment participate in coordination. In the present invention, by means of Ni(II)-pyridine coordination, the adhesive force of the contact surface caused by mutual diffusion generated by molecular chain sliding in the friction process of polyester is reduced, such that the friction resistance of the polyester industrial yarn is improved.
D01F 6/84 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits de copolycondensation à partir de copolyesters
D06M 11/00 - Traitement des fibres, fils, filés, tissus ou des articles fibreux faits de ces matières, avec des substances inorganiques ou leurs complexesUn tel traitement combiné avec un traitement mécanique, p. ex. mercerisage
C08G 63/685 - Polyesters contenant des atomes autres que le carbone, l'hydrogène et l'oxygène contenant de l'azote
The present invention relates to a high-water vapor barrier polyester film and a preparation method therefor. A modified polyester is prepared into the high-water vapor barrier polyester film according to a film preparation process. The preparation method for the modified polyester comprises: uniformly mixing terephthalic acid, ethylene glycol, 2,5-pyridinedicarboxylic acid, and nickel chloride, and then, sequentially carrying out an esterification reaction and a condensation polymerization reaction to obtain the modified polyester. A prepared polyester chain segment comprises a terephthalic acid chain segment, an ethylene glycol chain segment, and a 2, 5-pyridinedicarboxylic acid chain segment, and the 2,5-pyridinedicarboxylic acid chain segments of different polyester chain segments are coordinated by means of Ni2+; the molar ratio of the terephthalic acid chain segment to the 2,5-pyridinedicarboxylic acid chain segment is 1:(0.08-0.10); an O atom on a carbonyl group and an N atom on pyridine in the 2, 5-pyridinedicarboxylic acid chain segment participate in coordination. In the present invention, the free volume is reduced by means of coordination of Ni2+and 2, 5-pyridinedicarboxylic acid, so that the water vapor barrier property of the polyester film is improved, and the water vapor transmittance of the high-water vapor barrier polyester film is less than or equal to 1.0 g/(m2·d) under the conditions of 38℃ and 90% relative humidity.
A three-dimensional (3D) fabric and a preparation method therefor. The 3D fabric is a woven fabric which is formed by interweaving warp yarns and weft yarns and has a non-planar surface; the warp density and weft density on each part of the woven fabric are the same; all warp yarns on the woven fabric are parallel to the plane where any curved warp yarn is located; and all weft yarns on the woven fabric are parallel to the plane where any curved weft yarn is located. The preparation method comprises: first determining, according to a 3D structure of the 3D fabric, weaving parameters: the warp let-off amount of a j-th warp during i-th beating-up and a heddle eye height of a heddle corresponding to the j-th warp during the i-th beating-up, and then placing a corresponding grid-like support in an area from a corresponding cloth fell to a first row of heddles during 3D fabric weaving for weaving to prepare the 3D fabric. The method is widely applicable, a fabric having a curved surface can be directly woven, and the prepared 3D fabric has the advantages of being formed at a time, and having an uninterrupted structure, controllable density, and a complex curved surface.
D03D 13/00 - Tissus caractérisés par la disposition particulière des fils de chaîne ou de trame, p. ex. avec fils de trame incurvés, avec fils de chaîne discontinus, avec fils de chaîne ou de trame en diagonale
D03D 49/06 - Mécanismes de déroulement de la chaîne
D03D 51/00 - Dispositifs d'entraînement, de mise en marche ou d'arrêtMouvements d'arrêt automatique
The present invention relates to a safety airbag and a manufacturing method therefor. The safety airbag comprises a polyester fabric for safety airbags, a silica gel coating, and a safety valve, wherein the polyester fabric for safety airbags comprises a double-layer woven fabric formed by interweaving warp yarns and weft yarns; all the warp yarns on the double-layer woven fabric are parallel to a plane in which any curved warp yarn is located, and all the weft yarns thereon are parallel to a plane in which any curved weft yarn is located; and the warp density is the same all over and so is the weft density. The manufacturing method comprises: weaving a polyester fabric for safety airbags, providing an air intake hole on the upper portion of the polyester fabric, which air intake hole is used for connecting to a gas generator to manufacture an air bag of a safety airbag; uniformly spraying a layer of silica gel inside the fabric to form a silica gel coating and performing a vulcanization treatment; and then installing a safety valve to obtain the safety airbag. By means of the method for manufacturing a safety airbag of the present invention, a fabric with a curved shape can be directly woven. The method is simplified with respect to a composite molding process; and the manufactured safety airbag is low cost, has good mechanical properties, and has high safety.
D01D 5/16 - Méthodes de filage par étirage utilisant des rouleaux, ou dispositifs mécaniques similaires, p. ex. dispositifs à doigts de friction
D01D 7/00 - Réception des produits nouvellement filés
D01F 1/07 - Addition de substances à la solution de filage ou à la masse fondue pour fabriquer des filaments incombustibles ou ininflammables
D01F 6/62 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits d'homopolycondensation à partir de polyesters
D02J 1/22 - Étirage ou tension, retrait ou relâchement, p. ex. par utilisation d'appareils sur ou sous-alimentés ou empêchant l'étirage
D02J 13/00 - Chauffage ou refroidissement de filaments, filés, fils câblés, cordes ou similaires ne correspondant spécifiquement à aucun des procédés prévus dans la présente sous-classe
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
A type of cationic dyeable polyester fiber and preparing method thereof are disclosed. The preparing method is to manufacture a fiber from a cationic modified polyester through a fully drawn yarn (FDY) process, wherein the cationic modified polyester is composed of terephthalic acid segments, ethylene glycol segments, sodium salt of diethylene ester of 5-sulfoisophthalic acid segments and tert-butyl branched diol segments and a molecular formula of tert-butyl branched diol is as following:
The cationic modified polyester is further dispersed with a high temperature calcined solid heteropolyacid. A final fiber has a dye uptake of 87.8-92.2% and a K/S value of 23.27-25.67 when dyed at 120° C., as well as an intrinsic viscosity drop of 13-17% when stored at 25° C. and R.H. 65% for 60 months.
C08G 63/688 - Polyesters contenant des atomes autres que le carbone, l'hydrogène et l'oxygène contenant du soufre
D01F 6/84 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits de copolycondensation à partir de copolyesters
44.
Degradable polyester fiber and preparing method thereof
2 powder. The obtain fiber has an intrinsic viscosity drop of 23-28% when stored at 25° C. and R.H. 65% for 60 months. The method herein is of low cost and easy technologies, whereas the obtained fiber has a rapid natural degradation rate and a wide application prospect.
D01F 1/10 - Autres agents modifiant les propriétés de ces filaments
C08G 63/682 - Polyesters contenant des atomes autres que le carbone, l'hydrogène et l'oxygène contenant des halogènes
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
C08G 63/86 - Germanium, antimoine ou leurs composés
45.
Easy-to-dye degradable polyester FDY and preparing method thereof
A type of easy-to-dye degradable polyester FDY and preparing method thereof are disclosed. The method for preparing an easy-to-dye degradable polyester FDY is to prepare a modified polyester FDY from a modified polyester melt with FDY process; wherein the material is a modified polyester; wherein the modified polyester has a molecular chain structure composed of terephthalic acid segments, ethylene glycol segments, 2,2,3,4,5,5-hexamethyl-3,4-hexanediol segments and tert-butyl branched heptanediol segments; wherein the modified polyester is dispersed by solid heteropolyacid powder calcined at a 400˜700° C. temperature. The preparing method has a simple process, modifying the polyester through solid heteropolyacid, tert-butyl branched heptanediol and 2,2,3,4,5,5-hexamethyl-3,4-hexanediol, which increases the hydrolysis rate of the polyester, improves the dyeing performance and prepares products with excellent mechanical properties.
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
3 powder; wherein the main chain silicated diol is selected from the group consisting of dimethylsiloxane diol, dimethyldiphenyldisiloxane glycol and tetramethyldisiloxane diol. The structural formula of 2,2,3,4,5,5-hexamethyl-3,4-hexanediol is as follows:
The dye uptake and the K/S value of the prepared easy-to-dye porous modified polyester fiber are high. This invention features a method with ease of application and a product with good dyeing performance and good quality.
D01F 1/07 - Addition de substances à la solution de filage ou à la masse fondue pour fabriquer des filaments incombustibles ou ininflammables
D02J 1/22 - Étirage ou tension, retrait ou relâchement, p. ex. par utilisation d'appareils sur ou sous-alimentés ou empêchant l'étirage
D02J 13/00 - Chauffage ou refroidissement de filaments, filés, fils câblés, cordes ou similaires ne correspondant spécifiquement à aucun des procédés prévus dans la présente sous-classe
D01F 6/62 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits d'homopolycondensation à partir de polyesters
D01D 5/088 - Refroidissement des filaments, fils ou similaires, à la sortie des filières
D01D 5/16 - Méthodes de filage par étirage utilisant des rouleaux, ou dispositifs mécaniques similaires, p. ex. dispositifs à doigts de friction
D01D 5/247 - Structure creuse discontinue ou structure microporeuse
D01F 1/10 - Autres agents modifiant les propriétés de ces filaments
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
A type of high-modulus-low-shrinkage activated PET industrial yarn and preparing method thereof are disclosed. The preparing method is to manufacture filament from a modified polyester, which is the product of the esterification and the successive polycondensation reactions of evenly mixed terephthalic acid, ethylene glycol and tert-butyl branched heptanediol, through a series of processes composed of viscosity enhancing by solid state polycondensation, melting, metering, extruding, cooling, oiling, stretching, heat setting, relaxation heat-treating, oiling with activation oil, winding and pre-activation treatment. The relaxation heat-treating indicates passing the modified polyester yarns through a space with a certain temperature within 200-220° C. under a proper relaxation state; and the proper relaxation state means a 3.0-5.0% of overfeed for the winding. The improvement of activator efficiency by importing the tert-butyl branched diol into the polyester, together with the synergistic effect of heat setting temperature and high winding overfeed rate, will reduce the fiber thermal shrinkage.
C07C 29/141 - Préparation de composés comportant des groupes hydroxyle ou O-métal liés à un atome de carbone ne faisant pas partie d'un cycle aromatique à six chaînons par réduction d'un groupe fonctionnel contenant de l'oxygène de groupes contenant C=O, p. ex. —COOH d'un groupe —CHO avec de l'hydrogène ou des gaz contenant de l'hydrogène
C07C 29/145 - Préparation de composés comportant des groupes hydroxyle ou O-métal liés à un atome de carbone ne faisant pas partie d'un cycle aromatique à six chaînons par réduction d'un groupe fonctionnel contenant de l'oxygène de groupes contenant C=O, p. ex. —COOH de cétones avec de l'hydrogène ou des gaz contenant de l'hydrogène
D01D 5/08 - Méthodes de filage à partir de masses en fusion
D01D 7/00 - Réception des produits nouvellement filés
D01F 6/62 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits d'homopolycondensation à partir de polyesters
D02J 1/22 - Étirage ou tension, retrait ou relâchement, p. ex. par utilisation d'appareils sur ou sous-alimentés ou empêchant l'étirage
D02J 13/00 - Chauffage ou refroidissement de filaments, filés, fils câblés, cordes ou similaires ne correspondant spécifiquement à aucun des procédés prévus dans la présente sous-classe
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
A composite crimped fiber for knitting and a preparation method therefor. In a process of preparing a circular side-by-side composite fiber from PET and PBT according to FDY processing, spinneret holes on a spinneret plate are changed from a circular shape to a trilobal shape, cyclical blowing is used for cooling, the distribution of trilobal spinneret holes on the spinneret plate is controlled to satisfy a certain condition, and relaxation thermal treatment is performed on fibers to obtain a composite crimped fiber for knitting. The contact surfaces of the PET and the PBT when flowing through guide holes of the trilobal spinneret holes are parallel to one another. The prepared composite crimped fiber for knitting takes a three-dimensional crimped form and consists of a plurality of PET/PBT side-by-side composite monofilaments having trilobal cross-sections.
D01D 5/32 - Structure "côte-à-côte"Ensembles de filage à cet effet
D01D 5/23 - Formation des filaments, fils ou similaires à structure crêpée ou onduléeFormation des filaments, fils ou similaires à structure imitant celle de la laine par un refroidissement asymétrique des filaments, fils ou similaires, à la sortie de la filière
D01D 5/253 - Formation des filaments, fils ou similaires à section transversale non circulaireEnsembles de filage à cet effet
D01D 5/08 - Méthodes de filage à partir de masses en fusion
D01F 8/14 - Filaments, ou similaires, faits par l’homme, conjugués, c.-à-d. à plusieurs composantsLeur fabrication à partir de polymères synthétiques avec au moins un polyester comme constituant
49.
COTTON-LIKE POLYESTER FIBER AND PREPARATION METHOD THEREFOR
A cotton-like polyester fiber and a preparation method therefor. After PET is separately spun according to POY processing and FDY processing, the results are plied, and then a cotton-like polyester fiber is obtained by means of network compositing, winding, and relaxation thermal treatment. In the POY processing, spinneret holes in a spinneret plate are circular, and in the FDY processing, spinneret holes in a spinneret plate are of a trilobal shape, and cyclical blowing is used for cooling, the trilobal shapes of all of the trilobal spinneret holes forming a T shape. The obtained cotton-like polyester fiber takes a three-dimensional crimped form, and consists of a plurality of PET FDY monofilaments having trilobal cross-sections and a plurality of PET POY monofilaments having circular cross-sections. The crimp shrinkage thereof is 20-25%, the crimp stability is 73-75%, the rate of contraction and elongation is 50-53%, and the crimp elastic recovery is 78-82%. The breakage strength is 2.3-25 cN/dtex, the elongation at break is 20-30%, and the boiling water shrinkage is 3.0-4.0%.
D01D 5/253 - Formation des filaments, fils ou similaires à section transversale non circulaireEnsembles de filage à cet effet
D01D 5/092 - Refroidissement des filaments, fils ou similaires, à la sortie des filières dans des cheminées
D01D 5/23 - Formation des filaments, fils ou similaires à structure crêpée ou onduléeFormation des filaments, fils ou similaires à structure imitant celle de la laine par un refroidissement asymétrique des filaments, fils ou similaires, à la sortie de la filière
50.
RECYCLED POLYESTER FILAMENT AND PREPARATION METHOD THEREFOR
A recycled polyester filament and a preparation method therefor. In a process of preparing a fiber from recycled polyester according to FDY processing, cyclical blowing is used for cooling, and the distribution of spinneret holes on the spinneret plate is controlled to satisfy a certain condition. After the FDY thread is produced, relaxation thermal treatment is performed to obtain a recycled polyester filament. The spinneret holes are C-shaped spinneret holes and circular spinneret holes, the cross-section of the C-shaped spinneret holes being formed from an outer arc M, an inner arc N, and two line segments, the two end points of the outer arc M respectively being A and B. All of the spinneret holes are distributed in concentric circles, and the C-shaped spinneret holes are positioned on the outermost circle, rotated at different angles and randomly distributed. The present recycled polyester filament takes a three-dimensional crimped form, and the crimping directions of monofilaments are randomly distributed. The present method uses a simple method to produce a recycled polyester filament having a crimped form, and solves the problem of "uneven strip shading" occurring easily in knit articles prepared from three-dimensional crimped fibers.
D01D 5/22 - Formation des filaments, fils ou similaires à structure crêpée ou onduléeFormation des filaments, fils ou similaires à structure imitant celle de la laine
D01D 5/253 - Formation des filaments, fils ou similaires à section transversale non circulaireEnsembles de filage à cet effet
D01F 6/62 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits d'homopolycondensation à partir de polyesters
51.
DEGRADABLE POLYESTER FIBER AND PREPARATION METHOD THEREFOR
22 dispersed therein, then cooling same using circular blow, preparing an FDY yarn according to an FDY process, and preparing a degradable polyester fiber by means of relaxation heat treatment, wherein each trilobal spinneret orifice on the spinneret plate is a spinneret orifice in which the lengths of the three lobes are not completely the same and the included angles between the three lobes are not completely the same, all the trilobal spinneret orifices are distributed in concentric circles, and a lobe opposite to the minimum included angle in each trilobal spinneret orifice has a center line passing through the circle center and points to a direction facing away from the circle center. The prepared degradable polyester fiber has a three-dimensional curled shape; after being placed at the temperature of 25°C and the relative humidity of 65% for 60 months, the intrinsic viscosity of the degradable polyester fiber is reduced by 10% to 16%. The process is simple, and the prepared degradable polyester fiber has excellent degradability and good elasticity.
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
D01F 1/10 - Autres agents modifiant les propriétés de ces filaments
D01D 5/253 - Formation des filaments, fils ou similaires à section transversale non circulaireEnsembles de filage à cet effet
D01D 5/22 - Formation des filaments, fils ou similaires à structure crêpée ou onduléeFormation des filaments, fils ou similaires à structure imitant celle de la laine
52.
FIBER FOR MEDICAL ANTIBACTERIAL FABRIC AND PREPARATION METHOD THEREFOR
A method for preparing a fiber for a medical antibacterial fabric, comprising: extruding an antibacterial polyester melt from trilobal spinneret orifices in a spinneret plate, and then cooling with a cross air blow; preparing FDY yarns according to an FDY process; and carrying out relaxation heat treatment to prepare the fiber for the medical antibacterial fabric. The trilobal shapes and sizes of the three leaves of the different trilobal spinneret orifices are the same, and all trilobal spinneret orifices are distributed in a concentric circle, and the pointing of the shortest leaf of each trilobal spinneret orifice is randomly distributed.
D01D 5/22 - Formation des filaments, fils ou similaires à structure crêpée ou onduléeFormation des filaments, fils ou similaires à structure imitant celle de la laine
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
53.
METHOD FOR PREPARING SELF-CRIMPED ELASTIC COMBINED FILAMENT YARN FOR KNITTING
Disclosed is a method for preparing a self-crimped elastic combined filament yarn for knitting. The method comprises extruding a combined filament yarn on a same spinneret plate; splitting a first fiber-forming polymer melt into two paths: one path is subjected to direct extrusion after distribution, and the other path is subjected to distribution with a second fiber-forming polymer melt in a parallel composite spinning manner and then to extrusion, wherein the first fiber-forming polymer and second fiber-forming polymer are compatible or partially compatible, and on the same spinneret plate, the ratio of the number of the spinneret orifices m through which the melt flows via direct extrusion to the number of the spinneret orifices n through which the melt flows via extrusion after distribution in a parallel composite spinning manner is 1 : 5-10; and preparing the self-crimped elastic combined filament yarn for knitting according to a specific spinning process. The combined filament yarn is mainly composed of a first fiber-forming polymer monofilament and a first fiber-forming polymer/second fiber-forming polymer parallel composite monofilament. The direction of the crimping of a monofilament is randomly distributed, which effectively solves the problem of "stripe unevenness" formed in two-component composite fiber knitted fabrics.
D02G 3/04 - Fils provenant de mélange ou autres filés ou fils contenant des composants faits de matières différentes
D01D 5/32 - Structure "côte-à-côte"Ensembles de filage à cet effet
D01D 5/22 - Formation des filaments, fils ou similaires à structure crêpée ou onduléeFormation des filaments, fils ou similaires à structure imitant celle de la laine
D01D 5/08 - Méthodes de filage à partir de masses en fusion
A PET bi-component elastic yarn having different viscosities and a preparation method therefor. The PET bi-component elastic yarn having different viscosities is extruded on the same spinneret plate, and a high-viscosity PET melt is divided into two paths: one path is directly extruded after being distributed, and the other path is extruded after being distributed together with a low-viscosity PET melt in a parallel composite spinning manner; and after extrusion, a FDY is prepared according to an FDY process and then subjected to a relaxation heat treatment.
D01D 5/32 - Structure "côte-à-côte"Ensembles de filage à cet effet
D01D 5/22 - Formation des filaments, fils ou similaires à structure crêpée ou onduléeFormation des filaments, fils ou similaires à structure imitant celle de la laine
D01D 5/253 - Formation des filaments, fils ou similaires à section transversale non circulaireEnsembles de filage à cet effet
D01F 8/14 - Filaments, ou similaires, faits par l’homme, conjugués, c.-à-d. à plusieurs composantsLeur fabrication à partir de polymères synthétiques avec au moins un polyester comme constituant
55.
ONE-STEP CDP/PET TWO-COMPONENT COMPOSITE FILAMENT AND PREPARATION METHOD THEREFOR
A one-step CDP/PET two-component composite filament and a preparation method therefor. The method comprises: according to a FDY process, distributing CDP and PET melts, and then extruding a FDY filament from spinneret holes m and n of the same spinneret plate; and performing a thermal relaxation process, so as to obtain a CDP/PET two-component composite filament, wherein the CDP and PET melts flow via distribution holes A and B to the spinneret hole m, and flow via distribution holes C and D to the spinneret hole n, the difference between the apparent viscosity of the CDP melt and the apparent viscosity of the PET melt at respective entrances of the distribution holes A, B, C, and D is 5% or less, the distribution holes A and B are cylindrical holes having the same height and a diameter ratio of 1.30-1.50:1, and the distribution holes C and D are cylindrical holes having the same height and a diameter ratio of 1:1.30-1.50. The obtained composite filament is composed of multiple CDP/PET side-by-side composite monofilaments having different component ratios, and crimp directions of the monofilaments in the composite filament are randomly distributed, such that knitted fabrics using the two-component composite filament do not have the problem of surface unevenness.
D01F 8/14 - Filaments, ou similaires, faits par l’homme, conjugués, c.-à-d. à plusieurs composantsLeur fabrication à partir de polymères synthétiques avec au moins un polyester comme constituant
D01D 5/32 - Structure "côte-à-côte"Ensembles de filage à cet effet
56.
PARALLEL SELF-CRIMPED ELASTIC FIBER AND PREPARATION METHOD THEREFOR
Disclosed are a parallel self-crimped elastic fiber and a preparation method therefor. The parallel self-crimped elastic fiber is prepared by distributing compatible or partially compatible first and second fiber-forming polymer (P1 and P2) melts, and extruding same from spinneret orifices m and n on the same spinneret plate, wherein the P1 and P2 melts flow to the spinneret orifice m via distribution holes A and B, and flow to the spinneret orifice n via distribution holes C and D, wherein the distribution holes A, B, C or D are cylindrical holes of equal height, the diameter ratio of A to B is 1.10-1.20 : 1, the diameter ratio of C to D is 1 : 1.10-1.20, and the difference in the apparent viscosity of the P1 and P2 melts does not exceed 5% at the inlet of A-D. The prepared fiber is composed of P2/P1 parallel composite monofilaments in a mass ratio of P1 to P2 of 3 : 2-2 : 1, and P2/P1 parallel composite monofilaments in a mass ratio of P1 to P2 of 2 : 3-1 : 2. The present invention solves the problem of "stripe unevenness" of parallel composite fibers in knitted fabrics.
D01F 8/14 - Filaments, ou similaires, faits par l’homme, conjugués, c.-à-d. à plusieurs composantsLeur fabrication à partir de polymères synthétiques avec au moins un polyester comme constituant
D01F 8/12 - Filaments, ou similaires, faits par l’homme, conjugués, c.-à-d. à plusieurs composantsLeur fabrication à partir de polymères synthétiques avec au moins un polyamide comme constituant
D01F 8/16 - Filaments, ou similaires, faits par l’homme, conjugués, c.-à-d. à plusieurs composantsLeur fabrication à partir de polymères synthétiques avec au moins un autre composé macromoléculaire obtenu par des réactions faisant intervenir uniquement des liaisons non saturées carbone-carbone comme constituant
D01D 5/32 - Structure "côte-à-côte"Ensembles de filage à cet effet
57.
Fully dull polyester drawn yarn and preparing method thereof
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
D01D 5/253 - Formation des filaments, fils ou similaires à section transversale non circulaireEnsembles de filage à cet effet
D01F 1/10 - Autres agents modifiant les propriétés de ces filaments
D01D 5/088 - Refroidissement des filaments, fils ou similaires, à la sortie des filières
C08G 63/695 - Polyesters contenant des atomes autres que le carbone, l'hydrogène et l'oxygène contenant du silicium
C08G 63/46 - Polyesters modifiés chimiquement par estérification
C08G 63/86 - Germanium, antimoine ou leurs composés
A thermal-moisture comfortable polyester FDY for summer use and a preparation method thereof are provided. The FDY is made of matting agents dispersed polyester via the steps of spinning melt metering, extruding via the compositional spinneret, cooling, oiling, drawing, heat setting and winding. The woven fabrics manufactured with the FDY possess a wicking height and an evaporation rate of larger than or equal to 135 mm and 0.22 g/h, respectively. The compositional spinneret is simultaneously provided with cruciform orifices and circular orifices, and the length ratio of cruciform orifice to circular orifice is equal to the product of their equivalent diameter ratio and a coefficient K, here equivalent diameter is the ratio of orifice cross-section area to its circumference and K ranges from 0.97 to 1.03, and the oiling involves the oiling agent containing 67.30-85.58 wt % of crown ether.
D01D 5/253 - Formation des filaments, fils ou similaires à section transversale non circulaireEnsembles de filage à cet effet
D01F 1/10 - Autres agents modifiant les propriétés de ces filaments
D01F 6/62 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits d'homopolycondensation à partir de polyesters
D02J 1/22 - Étirage ou tension, retrait ou relâchement, p. ex. par utilisation d'appareils sur ou sous-alimentés ou empêchant l'étirage
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
D01D 5/088 - Refroidissement des filaments, fils ou similaires, à la sortie des filières
D01D 5/096 - Réglage de l'humidité, ou lubrification des filaments, fils ou similaires, à la sortie des filières
D01D 5/16 - Méthodes de filage par étirage utilisant des rouleaux, ou dispositifs mécaniques similaires, p. ex. dispositifs à doigts de friction
A type of feather-like polyester fiber and a preparing method thereof are disclosed. The preparing method is to manufacture filament from a modified polyester through a POY process with a four-fold flat spinneret and a successive DTY processes, wherein said modified polyester is the product of the esterification and the successive polycondensation reactions of evenly mixed terephthalic acid, ethylene glycol, main-chain silicated diol and fluorinated dicarboxylic acid, and the spinneret is the one set with four-fold flat shaped orifices. The obtained fiber has a dye uptake of 89.6-93.7% when dyed at 130° C., and has an intrinsic viscosity drop of 13-20% when stored at 25° C. and R.H. 65% for 60 months. This invention is simple to apply and features a product with good dyeing and degradation performance.
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
D01D 5/253 - Formation des filaments, fils ou similaires à section transversale non circulaireEnsembles de filage à cet effet
D01F 1/10 - Autres agents modifiant les propriétés de ces filaments
D01D 5/088 - Refroidissement des filaments, fils ou similaires, à la sortie des filières
C08G 63/695 - Polyesters contenant des atomes autres que le carbone, l'hydrogène et l'oxygène contenant du silicium
C08G 63/46 - Polyesters modifiés chimiquement par estérification
C08G 63/86 - Germanium, antimoine ou leurs composés
3, in which the main chain silicated diol could be dimethylsiloxane diol, dimethyldiphenyldisiloxane glycol or tetramethyldisiloxane diol, and in which the fluorinated dicarboxylic acids could be 2,2-difluoro-1,3-malonic acid, 2,2-difluoro-1,4-succinic acid, 2,2-difluoro-1,5-glutaric acid or 2,2,3,3-tetrafluoro-1,4-succinic acid. The obtained fiber has a dye uptake of 87.5-91.8% when dyed at 120° C., and has an intrinsic viscosity drop of 18-26% when stored at 25° C. and R.H. 65% for 60 months. This invention features a method with ease of application and a product with good dyeing and degradation performance.
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
D01F 11/08 - Post-traitement chimique de filaments, ou similaires, faits par l’homme, pendant leur fabrication de polymères synthétiques de composés macromoléculaires obtenus par des réactions faisant intervenir uniquement des liaisons non saturées carbone-carbone
61.
Wool-like polyester filament and preparing method thereof
A type of wool-like polyester filament and preparing method thereof are disclosed. The preparing method is manufacturing filament from a modified polyester through a POY process and a successive DTY processes, wherein the modified polyester is the product of the esterification and the successive polycondensation reactions of evenly mixed terephthalic acid, 1,4-butanediol, fluorinated dicarboxylic acid, tert-butyl branched hexanediol and 2,5,6,6-tetramethyl-2,5-heptanediol. The obtained fiber has a dye uptake of 90.32-93.27% and a K/S value of 22.15-23.42 when dyed at 100° C., and has an intrinsic viscosity drop of 17-20% when stored at 25° C. and R.H. 65% for 60 months. This invention features a method with ease of application and a product with good dyeing and degradation performance.
C08K 5/521 - Esters des acides phosphoriques, p. ex. de H3PO4
C08K 5/524 - Esters des acides phosphoreux, p. ex. de H3PO3
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
62.
Method for improving quality of polyester industrial yarn
A method for improving the quality of a polyester industrial yarn is provided. First, in the cooling process of preparing a polyester industrial yarn prepared by polyester spinning, the longitudinal height is kept unchanged, and the cross-sectional area of the slow cooling chamber is enlarged. The chamber maintains the surface temperature of the spinneret by means of heat preservation, and then uses an oil agent containing 67.30-85.58 wt % crown ether in the oiling process of polyester industrial yarn prepared by polyester spinning. Enlarging the cross-sectional area of the slow-cooling chamber refers to the cross section of the slow cooling chamber is changed from a circular shape to a rectangular shape while keeping the spinneret connected to the slow cooling chamber unchanged. The cleaning cycle of the spinneret is prolonged by 35-45%, the full package rate of polyester industrial yarn is larger than 99%.
D01D 5/088 - Refroidissement des filaments, fils ou similaires, à la sortie des filières
C08J 5/02 - Traitement direct des dispersions, p. ex. du latex, pour produire des objets
D01D 5/096 - Réglage de l'humidité, ou lubrification des filaments, fils ou similaires, à la sortie des filières
D01F 6/62 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits d'homopolycondensation à partir de polyesters
D01F 11/08 - Post-traitement chimique de filaments, ou similaires, faits par l’homme, pendant leur fabrication de polymères synthétiques de composés macromoléculaires obtenus par des réactions faisant intervenir uniquement des liaisons non saturées carbone-carbone
63.
Light weight heat-preserving fiber and preparation method thereof
D01D 5/24 - Formation des filaments, fils ou similaires à structure creuseEnsembles de filage à cet effet
D01D 5/096 - Réglage de l'humidité, ou lubrification des filaments, fils ou similaires, à la sortie des filières
D01F 6/62 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits d'homopolycondensation à partir de polyesters
D01F 11/08 - Post-traitement chimique de filaments, ou similaires, faits par l’homme, pendant leur fabrication de polymères synthétiques de composés macromoléculaires obtenus par des réactions faisant intervenir uniquement des liaisons non saturées carbone-carbone
D06M 13/11 - Composés contenant des groupes époxydes ou leurs précurseurs
D06M 13/224 - Esters d'acides carboxyliquesEsters de l'acide carbonique
D06M 13/295 - Mono-, di- or triesters des acides phosphoriques ou phosphoreuxLeurs sels contenant des restes polyglycolMono-, di- or triesters des acides phosphoriques ou phosphoreuxLeurs sels contenant des restes néopentyle
A bi-profiled fiber and preparing method thereof are provided. The bi-profiled fiber is manufactured through the steps of spinning melt metering, extruding via the composite spinneret, cooling, oiling, drawing, heat setting and winding, finally containing both double-cross monofilaments and circular monofilaments simultaneously. The bi-profiled fiber is made of the modified polyester, and the modified polyester is dispersed by matte agent and is composed of terephthalic acid segments, ethylene glycol segments and branched diol segments, and the branched diol segment has a structural formula of
4 from the alkyl with 2-5 carbon atoms. The matte agents is a mixture of amorphous titanium dioxide and amorphous silicon dioxide, or a mixture of calcium carbonate and amorphous silicon dioxide.
C08G 63/86 - Germanium, antimoine ou leurs composés
D01D 5/253 - Formation des filaments, fils ou similaires à section transversale non circulaireEnsembles de filage à cet effet
D01D 5/30 - Filaments conjuguésEnsembles de filage à cet effet
D01F 1/10 - Autres agents modifiant les propriétés de ces filaments
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
D06M 13/224 - Esters d'acides carboxyliquesEsters de l'acide carbonique
A low-shrinkage polyester industrial yarn and a preparation method thereof are provided. The preparation method includes the following steps: subjecting the modified polyester to polycondensation, melting, measuring, extruding, cooling, oiling, stretching, heat setting and winding, wherein the content of the crown ether in the oil agent is 67.30-85.58 wt %. The material of the prepared low shrinkage polyester industrial yarn is a modified polyester, the molecular chain of the modified polyester includes a terephthalic acid segment, an ethylene glycol segment, and a branched diol segment, and the structural formula of the branched diol is as follows:
4 is selected from an alkyl group consisting of 2-5 carbon atoms.
D01D 5/096 - Réglage de l'humidité, ou lubrification des filaments, fils ou similaires, à la sortie des filières
D01F 6/84 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits de copolycondensation à partir de copolyesters
D01F 11/08 - Post-traitement chimique de filaments, ou similaires, faits par l’homme, pendant leur fabrication de polymères synthétiques de composés macromoléculaires obtenus par des réactions faisant intervenir uniquement des liaisons non saturées carbone-carbone
66.
WOOL-LIKE POLYESTER FILAMENT AND PREPARATION METHOD THEREFOR
The present invention relates to a wool-like polyester filament and a preparation method therefor. The method comprises: first, uniformly mixing terephthalic acid, 1,4-butanediol, a fluorine-containing diacid, hexanediol having a tertiary butyl side group, and 2,5,6,6-tetramethyl-2,5,-heptanediol; then sequentially performing an esterification reaction and a polycondensation reaction to prepare a modified polyester; preparing a modified polyester POY filament from a modified polyester melt according to a POY process; finally, preparing a modified polyester DTY filament, i.e., the wool-like polyester filament, from the modified polyester POY filament according to a DTY process. The dye uptake of a prepared product is 90.32-93.27% under the temperature of 100°C, and a K/S value is 22.15-23.42; after being placed at the temperature of 25°C and the relative humidity of 65% for 60 months, the intrinsic viscosity of the product decreases by 17-20%. By means of the preparation method of the present invention, the present invention is low in cost and simple in process; the prepared product has an excellent dyeing property and a fast natural degradation rate, and has great application prospects.
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
D01F 1/10 - Autres agents modifiant les propriétés de ces filaments
C08G 63/682 - Polyesters contenant des atomes autres que le carbone, l'hydrogène et l'oxygène contenant des halogènes
67.
SEMI-MATTE POLYESTER DRAWN YARN AND PREPARATION METHOD THEREFOR
233 powder, and then carrying out an esterification reaction and a polycondensation reaction successively, wherein the fluorine-containing dibasic acid is 2,2-difluoro-1,3-malonic acid, 2,2-difluoro-1,4-succinic acid and 2,2-difluoro-1,5-glutaric acid or 2,2,3,3-tetrafluoro-1,4-succinic acid. The prepared product has a dye-uptake rate of 87.5-91.8% under 120°C temperature conditions, and the intrinsic viscosity thereof decreases 18-26% after being placed under 25°C temperature conditions and a relative humidity of 65% for 60 months. The preparation method of the present invention has a simple process, and the prepared product has good dyeing and degradation performances.
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
D01F 1/10 - Autres agents modifiant les propriétés de ces filaments
C08G 63/695 - Polyesters contenant des atomes autres que le carbone, l'hydrogène et l'oxygène contenant du silicium
C08G 63/86 - Germanium, antimoine ou leurs composés
68.
DEGRADABLE POLYESTER FIBER AND PREPARATION METHOD THEREFOR
22 powder is dispersed in the modified polyester. The intrinsic viscosity of the prepared product is decreased by 23-28% after being placed under the conditions of 25°C and 65% relative humidity for 60 months. The preparation method has the advantages of low cost, simple process, fast natural degradation rate of the prepared product, and good application prospect.
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
D01F 1/10 - Autres agents modifiant les propriétés de ces filaments
C08G 63/682 - Polyesters contenant des atomes autres que le carbone, l'hydrogène et l'oxygène contenant des halogènes
C08G 63/86 - Germanium, antimoine ou leurs composés
69.
FEATHER-LIKE YARN POLYESTER FIBER AND PREPARATION METHOD THEREFOR
The present invention relates to a feather-like yarn polyester fiber and a preparation method therefor. The preparation method is as follows: first uniformly mixing terephthalic acid, ethylene glycol, a main chain silicon-containing glycol and a fluorine-containing dibasic acid, then successively carrying out an esterification reaction and a polycondensation reaction to prepare a modified polyester, using a flat four-link annular spinneret to prepare a modified polyester POY wire from a modified polyester melt according to a POY process, and then fabricating a modified polyester DTY yarn from the modified polyester POY wire according to a DTY process, i.e. obtaining a feather-like yarn polyester fiber; and spinneret holes of the flat four-link annular spinneret are flat four-link annular holes. The prepared product has a dye-uptake rate of 89.6-93.7% under 130°C temperature conditions, and the intrinsic viscosity thereof decreases 13-20% after being placed under a temperature of 25°C at a relative humidity of 65% for 60 months. The preparation method of the present invention has a simple process and is low cost; and the prepared product has an excellent dyeing performance, a fast natural degradation rate and good application prospects.
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
D01F 1/10 - Autres agents modifiant les propriétés de ces filaments
C08G 63/86 - Germanium, antimoine ou leurs composés
C08G 63/695 - Polyesters contenant des atomes autres que le carbone, l'hydrogène et l'oxygène contenant du silicium
D01D 5/253 - Formation des filaments, fils ou similaires à section transversale non circulaireEnsembles de filage à cet effet
70.
EASILY DYED AND DEGRADED POLYESTER FDY YARN AND PREPARATION METHOD THEREOF
The present invention relates to easily dyed and degraded polyester FDY yarn and a preparation method thereof, wherein the preparation method is: modified polyester FDY yarn, that is, easily dyed and degraded polyester FDY yarn, is obtained from modified polyester melt according to a FDY process. The prepared polyester FDY yarn easy to dye and degrade is made of modified polyester, the molecular chain of the modified polyester comprises a terephthalic acid chain segment, an ethylene glycol chain segment, 2,2,3,4,5,5-hexamethyl-3,4-hexanediol chain segment and a heptanediol chain segment with a tert-butyl side group, wherein the modified polyester is dispersed with solid heteropoly acid powder subjected to high-temperature roasting, and the temperature of the high-temperature roasting is 400-700℃. The preparation method of the present invention is simple, the polyester is modified by solid heteropoly acid, heptanediol chain segment with a tert-butyl side group and 2,2,3,4,5,5-hexamethyl-3,4-hexanediol, thereby improving the degradation rate of the polyester and dyeing performance of the polyester fiber and providing excellent mechanical properties of the prepared product.
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
D01F 1/10 - Autres agents modifiant les propriétés de ces filaments
The present invention relates to a high modulus low shrinkage activated polyester industrial yarn and a preparation method therefor. The preparation method comprises: first, mixing terephthalic acid, ethylene glycol, and heptanediol with a tert-butyl side group uniformly, and then performing an esterification reaction and a polycondensation reaction to obtain modified polyester; and then the modified polyester is subjected to viscosity increase by solid phase polycondensation, melting, metering, extrusion, cooling, oiling, stretching, heat setting, relaxation heat treatment, oiling with an activation oil, winding, and pre-activation treatment to produce the high modulus low shrinkage activated polyester industrial yarn, the relaxation heat treatment refers to passing polyester tows through a space at a certain temperature in an appropriate relaxed state, and the appropriate relaxed state means that the overfeed rate of winding is 3.0 to 5.0%, and the certain temperature means 200 to 220°C. According to the present invention, the polyester is modified by using heptanediol with a tert-butyl side group, thereby improving the use efficiency of an activator, and by means of coordination of a heat treatment temperature with a high overfeed rate, the heat shrinkage in an application process is reduced, and a simple process is provided.
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
D01F 1/10 - Autres agents modifiant les propriétés de ces filaments
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
D01F 1/10 - Autres agents modifiant les propriétés de ces filaments
C08G 63/682 - Polyesters contenant des atomes autres que le carbone, l'hydrogène et l'oxygène contenant des halogènes
The present invention relates to cationic dyeable polyester fibers and a preparation method thereof, wherein the preparation method is: cationic modified polyester FDY yarns, that is, the cationic dyeable polyester fibers, are obtained from cationic modified polyester melt according to a FDY process; the molecular chain of the cationic modified polyester comprises a terephthalic acid chain segment, an ethylene glycol chain segment, a sodium isophthalic acid sulfonate chain segment and a glycol chain segment with a tert-butyl side group, the structural formula of the glycol with a tert-butyl side group is: (I) the cationic modified polyester is dispersed with solid heteropoly acid powder subjected to high-temperature roasting. The dyeing rate of the prepared products under the temperature condition of 120℃ is 87.8-92.2％, the K/S value is 23.27-25.67; after 60 months of placement under the condition that the temperature is 25℃ and the relative humidity is 65%, the characteristic viscosity of the product is reduced by 13-17％. The preparation method of the present invention has the advantages that the addition amount of a third monomer is small, the cost is low and the process is simple; and the prepared product has excellent dyeing performance and natural degradation performance.
D01F 6/84 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits de copolycondensation à partir de copolyesters
C08G 63/688 - Polyesters contenant des atomes autres que le carbone, l'hydrogène et l'oxygène contenant du soufre
74.
EASILY-DYED POROUS MODIFIED POLYESTER FIBER AND PREPARATION METHOD THEREFOR
233 powder, and sequentially performing an esterification reaction and a condensation polymerization reaction. The dihydric alcohol having the silicon-containing main chain is dimethylsilyl diol, dimethyl diphenyl disiloxane diol, or tetramethyldisiloxane diol, and the structural formula of 2,2,3,4,5,5-hexamethyl-3,4-hexanediol is as shown in formula (I). The dye-uptake and K/S value of the prepared easily-dyed porous modified polyester fiber are high. The method in the present invention is simple in process, and the finally prepared modified polyester fiber is good in dyeing performance and good in quality.
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
D01F 1/10 - Autres agents modifiant les propriétés de ces filaments
C08G 63/86 - Germanium, antimoine ou leurs composés
C08G 63/695 - Polyesters contenant des atomes autres que le carbone, l'hydrogène et l'oxygène contenant du silicium
75.
POLYESTER INDUSTRY FILAMENT FOR INDUSTRIAL SEWING THREAD AND PREPARATION METHOD THEREOF
233 powder doped with and modified by a metal oxide, and then sequentially performing an esterification reaction and a condensation reaction. The dibasic acid having the pendant tertiary-butyl group is 5-tertiary-butyl-1,3-phthalic acid, 2-tertiary-butyl-1,6-adipic acid, 3-tertiary-butyl-1,6-adipic acid or 2,5-di-tert-butyl-1,6-adipic acid. The prepared polyester industry filament has a high dyeing rate and K/S value. The method of the invention is a simple process, and the polyester industry filament prepared thereby has good dyeability.
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
D01F 1/10 - Autres agents modifiant les propriétés de ces filaments
C08G 63/695 - Polyesters contenant des atomes autres que le carbone, l'hydrogène et l'oxygène contenant du silicium
C08G 63/86 - Germanium, antimoine ou leurs composés
D01D 5/08 - Méthodes de filage à partir de masses en fusion
D01D 5/088 - Refroidissement des filaments, fils ou similaires, à la sortie des filières
D01D 5/16 - Méthodes de filage par étirage utilisant des rouleaux, ou dispositifs mécaniques similaires, p. ex. dispositifs à doigts de friction
A high uniformity coloured polyester industrial yarn and preparation method. The raw material of the high-uniformity coloured polyester industrial yard is the modified polyester composed of terephthalic acid segment, an ethylene glycol segment and a branched diol. The high-uniformity coloured polyester industrial yarn is prepared by esterification reaction of terephthalic acid with a branched diol using concentrated sulfuric acid as catalyst to obtain terephthalic acid glycol ester. Terephthalic acid and ethylene glycol are formulated to carry out esterification reaction to obtain ethylene terephthalate. Finally, stir and mix the two materials and carry out the polycondensation reaction in the low vacuum stage and the high vacuum stage under the action of the catalyst and the stabilizer to obtain modified polyester. Measure the modified polyester and add black masterbatch. After porous spinneret extrusion, cooling, oiling, drawing, heat setting and winding the modified polyester, high uniformity coloured polyester industry yarn is obtained.
D01F 6/84 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits de copolycondensation à partir de copolyesters
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
C08J 3/22 - Formation de mélanges de polymères avec des additifs, p. ex. coloration en utilisant les techniques des charges mères
C08L 67/02 - Polyesters dérivés des acides dicarboxyliques et des composés dihydroxylés
A one-step spun composite DTY and preparation method thereof are provided. The bi-profiled fiber is manufactured with two types of modified polyester of different viscosities through the steps of melting, melt metering, composite extruding, cooling, oiling, drawing, heat setting and winding. Wherein those two modified polyesters have a molecular structure including terephthalic acid segments, ethylene glycol segments and branched diol segments, and the branched diol has a structural formula of
4 from the alkyl with 2-5 carbon atoms. The obtained one-step spun composite DTY has an elastic shrinkage rate of no less than 35%. The method presented in this invention is involved in a simple and reasonable technological process for wide application range.
C08L 67/02 - Polyesters dérivés des acides dicarboxyliques et des composés dihydroxylés
D01F 6/84 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits de copolycondensation à partir de copolyesters
78.
LOW SHRINKAGE POLYESTER INDUSTRIAL YARN AND PREPARATION METHOD THEREOF
D01F 6/84 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits de copolycondensation à partir de copolyesters
D01F 11/08 - Post-traitement chimique de filaments, ou similaires, faits par l’homme, pendant leur fabrication de polymères synthétiques de composés macromoléculaires obtenus par des réactions faisant intervenir uniquement des liaisons non saturées carbone-carbone
134212344 is selected from alkyl having 2-5 carbon atoms. The matting agent is a mixture of an amorphous titanium dioxide and an amorphous silicon dioxide, or a mixture of calcium carbonate and silicon dioxide.
D01D 5/24 - Formation des filaments, fils ou similaires à structure creuseEnsembles de filage à cet effet
D01D 5/253 - Formation des filaments, fils ou similaires à section transversale non circulaireEnsembles de filage à cet effet
D01F 1/10 - Autres agents modifiant les propriétés de ces filaments
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
D01D 5/092 - Refroidissement des filaments, fils ou similaires, à la sortie des filières dans des cheminées
D01D 5/08 - Méthodes de filage à partir de masses en fusion
Disclosed are a light-weight thermal fiber and a preparation method therefor, wherein a polyester melt is subjected to metering, composite spinneret plate extrusion, cooling, finishing, stretching, thermal-setting and winding to prepare the light-weight thermal fiber; the composite spinneret plate is provided with both hollow spinneret holes and circular spinneret holes; the ratio of the length of the micropores of the hollow spinneret holes to the length of the micropores of the circular spinneret holes is equal to the product of the equivalent diameter ratio of the hollow spinneret holes to the circular spinneret holes and a coefficient K, and the equivalent diameter is the ratio of the cross-sectional area of the spinneret hole to the cross-sectional circumference of the spinneret hole, the range of the value of the coefficient K being 0.97-1.03; a finishing agent used for finishing contains a crown ether, and the content of the crown ether is 67.30 wt% - 85.58 wt%; and a knitting fabric with a gram weight of 100 g/m2 prepared by the obtained light-weight thermal fiber has a heat conductivity coefficient of ≤ 0.150W/m•K. This method is simple and reasonable, and the fiber prepared thereby has both a good light-weight and thermal performance and a good moisture-absorbing and perspiration performance, and has an excellent promotional value.
D01D 5/24 - Formation des filaments, fils ou similaires à structure creuseEnsembles de filage à cet effet
D01D 5/096 - Réglage de l'humidité, ou lubrification des filaments, fils ou similaires, à la sortie des filières
D01F 6/62 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits d'homopolycondensation à partir de polyesters
81.
Porous ultra-soft ultra-fine denier polyester fiber and its preparation method
A porous ultra-soft ultra-fine denier polyester fiber and preparation method. The modified polyester is spun with a porous spinneret to produce the porous ultra-soft ultra-fine denier polyester fiber, and the spinneret holes on the porous spinneret are arranged in an elliptical arrangement. The porous ultra-soft ultra-fine denier polyester fiber is obtained by metering, extruding, cooling, oiling and high-speed winding the modified polyester chips. The preparation method of modified polyester is as follows: terephthalic acid reacts with ethylene glycol to produce ethylene terephthalate. The modified polyester is obtained by the reaction of terephthalic acid with branched diol. The fiber of the invention has good properties and the deviation rate of fiber density. The deviation rate of fiber density is ≤0.5%, the CV value of breaking strength is ≤4.0%, the CV value of elongation at break is ≤8.0%, the CV value of yarn unevenness is ≤2.0%.
D01F 6/84 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits de copolycondensation à partir de copolyesters
82.
ONE-STEP SPUN ELASTIC COMPOSITE FILAMENT AND PREPARATION METHOD THEREFOR
12344 is selected from alkyl groups having 2-5 carbon atoms. The elastic shrinkage of the prepared one-step spun elastic composite filament is higher than or equal to 35%. The method of the present invention is simple and reasonable, and the prepared one-step spun elastic composite filament features the advantages of having high elasticity while being capable of maintaining dimensional stability, having good extensibility, etc., and thus has a great popularization value.
D01F 6/84 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits de copolycondensation à partir de copolyesters
C08G 63/83 - Métaux alcalins, métaux alcalino-terreux, béryllium, magnésium, cuivre, argent, or, zinc, cadmium, mercure, manganèse ou leurs composés
The present invention relates to a thermal-wet comfortable polyester fiber FDY yarn for summer use and a preparation method therefor, wherein the preparation method comprises: subjecting a spinning melt to metering, composite spinneret plate extrusion, cooling, finishing, stretching, thermoforming and winding to prepare the thermal-wet comfortable polyester fiber FDY yarn for summer use. The material thereof is a polyester with a dispersed matting agent, and a woven fabric made therefrom has a wicking height of ≥135 millimeters, and has an evaporation rate of ≥0.22 grams/hour. The composite spinneret plate is provided with both cross-shaped spinneret holes and circular spinneret holes, the ratio of the length of the micropores of the cross-shaped spinneret holes to the length of the micropores of the circular spinneret holes is equal to the product of the equivalent diameter ratio and a coefficient K, the range of the value of the coefficient K being 0.97-1.03. A finishing agent for finishing contains a crown ether, with the content of the crown ether being 67.30 wt% - 85.58 wt%. The preparation method of the present invention is simple, and the fibers obtained thereby have an excellent thermal-wet comfort performance and a good application prospect.
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
D01F 1/10 - Autres agents modifiant les propriétés de ces filaments
D01F 11/08 - Post-traitement chimique de filaments, ou similaires, faits par l’homme, pendant leur fabrication de polymères synthétiques de composés macromoléculaires obtenus par des réactions faisant intervenir uniquement des liaisons non saturées carbone-carbone
D01D 5/08 - Méthodes de filage à partir de masses en fusion
D01D 5/088 - Refroidissement des filaments, fils ou similaires, à la sortie des filières
D01D 5/096 - Réglage de l'humidité, ou lubrification des filaments, fils ou similaires, à la sortie des filières
D01D 5/16 - Méthodes de filage par étirage utilisant des rouleaux, ou dispositifs mécaniques similaires, p. ex. dispositifs à doigts de friction
D01D 5/253 - Formation des filaments, fils ou similaires à section transversale non circulaireEnsembles de filage à cet effet
D01D 7/00 - Réception des produits nouvellement filés
A method for improving the quality of a polyester industrial yarn. First, in a cooling procedure of preparing the polyester industrial yarn by means of polyester spinning, the longitudinal height maintains unchanged, the cross-sectional area of a slow cooling chamber is increased, and the slow cooling chamber maintains the surface temperature of a spinneret by means of heat insulation; and then, in an oiling procedure of preparing the polyester industrial yarn by means of polyester spinning, a finishing oil containing 67.30-85.58wt% of crown ether is used. The increase of the cross-sectional area of the slow cooling chamber refers to changing the cross-section of the slow cooling chamber from a circular shape to a rectangular shape, while maintaining the spinneret connected to the slow cooling chamber unchanged, such that a spinneret cleaning cycle is finally prolonged by 35-45%, and the full volume rate of the polyester industrial yarn is greater than or equal to 99%. The method is simple and reasonable, and the quality of the industrial yarn is improved.
D01F 11/08 - Post-traitement chimique de filaments, ou similaires, faits par l’homme, pendant leur fabrication de polymères synthétiques de composés macromoléculaires obtenus par des réactions faisant intervenir uniquement des liaisons non saturées carbone-carbone
A method for preparing the modified polyester. The modified polyester segments include terephthalic acid segment, ethylene glycol diol segment and branched diol segment, in which the branched diol segment refers to a diol segment in which a branch is located on a non-terminal carbon in the glycol segment and the branch is a linear carbon chain having 5 to 10 carbon atoms. The method includes preparing terephthalic acid glycol ester through the esterification of terephthalic acid and branched diol using the concentrated sulfuric acid as the catalyst. Then get ethylene terephthalate through the esterification of terephthalic acid and ethylene glycol. After stirring and mixing the two, the modified polyester can be obtained through polycondensation reaction of a low vacuum stage and a high vacuum stage using the catalyst and stabilizer.
D01F 6/62 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits d'homopolycondensation à partir de polyesters
D06P 3/54 - Polyesters utilisant des colorants en dispersion
86.
Different shrinkage composite yarn and its preparation method
A different shrinkage composite yarn and preparation method. The modified polyester is spun with a porous spinneret to produce a different shrinkage composite yarn, and the spinneret holes on the porous spinneret are arranged in an elliptical arrangement. The different shrinkage composite yarn is obtained by winding modified polyester POY yarn and FDY yarn, network recombining, and coiling them. The preparation method of modified polyester is as follows: terephthalic acid reacts with ethylene glycol to produce ethylene terephthalate. The modified polyester is obtained by the reaction of terephthalic acid with branched diol. The fiber of the invention has good properties and the deviation rate of fiber density. The CV value of breaking strength is ≤4.0%, the CV value of elongation at break is ≤8.0%, the CV value of coefficient of variation of coiling shrinkage is ≤8.0%.
D01F 6/84 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits de copolycondensation à partir de copolyesters
D02G 1/18 - Production de fibres, filaments, filés ou fils, crêpés ou ondulés ou leur donnant de telles caractéristiques latentes par combinaison de fibres, filaments ou filés possédant des caractéristiques de retrait différentes
D06P 3/54 - Polyesters utilisant des colorants en dispersion
D01D 5/16 - Méthodes de filage par étirage utilisant des rouleaux, ou dispositifs mécaniques similaires, p. ex. dispositifs à doigts de friction
D01F 1/10 - Autres agents modifiant les propriétés de ces filaments
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
A low chromatic aberration polyester different-shrinkage composite yarn is made of polyester POY yarn and polyester FDY composite yarn. The polyester POY yarn and polyester FDY yarn is obtained by spinning the polyester solution, the rupture strength of the low color polyester different-shrinkage composite yarn is ≥1.9 cN/dtex, the elongation at break is 30.0±5.0%, the crimp shrinkage is 2.50±3.0%, the network degree is 20±5/m, the color difference ΔE is less than 0.200. In the invention, the magnesium ethylene glycol is relatively mild, the thermal degradation coefficient is small, the oligomers in the polymerization process is reduced, and the oligomers in the dissolution process are further reduced, so that the appearance of stains and streaks reduces during the dyeing and post-processing heat setting of the polyester fiber, which ensures the fiber's leveling and rubbing fastness.
C08G 63/86 - Germanium, antimoine ou leurs composés
D01F 1/10 - Autres agents modifiant les propriétés de ces filaments
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
C08G 63/83 - Métaux alcalins, métaux alcalino-terreux, béryllium, magnésium, cuivre, argent, or, zinc, cadmium, mercure, manganèse ou leurs composés
D02G 1/18 - Production de fibres, filaments, filés ou fils, crêpés ou ondulés ou leur donnant de telles caractéristiques latentes par combinaison de fibres, filaments ou filés possédant des caractéristiques de retrait différentes
D01F 6/62 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits d'homopolycondensation à partir de polyesters
C25B 3/12 - Production électrolytique de composés organiques de composés organométalliques
D01D 5/08 - Méthodes de filage à partir de masses en fusion
D06P 1/16 - Procédés généraux de teinture ou d'impression des textiles ou procédés généraux de teinture du cuir, des fourrures ou des substances macromoléculaires solides de toutes formes, classés selon les teintures, les pigments ou les substances auxiliaires utilisés utilisant des matières colorantes en dispersion, p. ex. acétate
88.
Ultra-low shrinkage polyester industrial yarn and its preparation method
The present invention discloses an ultra-low shrinkage polyester industrial yarn and its preparation method. The ultra-low shrinkage polyester industrial yarn is prepared by subjecting a polyester to dissolution, washing and solid state polycondensation followed by spinning. The ultra-low shrinkage polyester industrial yarn has a dry heat shrinkage rate of 1.8±0.25% under test conditions of 177° C.×10 min×0.05 cN/dtex. The polycondensation catalyst consists of magnesium ethylene glycol and antimony ethylene glycol, has a small thermal degradation coefficient. The present invention reduces oligomers during polymerization, reduces thermal degradation during processing, and as a result the invention greatly reduces impurities and nucleating agent in the polyester, leading to an increase in the probability of homogeneous nucleation based on the reduction of heterogeneous nucleation. The dissolution and washing of polyester further decreases oligomer content, facilitating the growth of the grain size and the optimization of crystal perfection in the ultra-low shrinkage polyester industrial yarn.
C08G 63/02 - Polyesters dérivés soit d'acides hydroxycarboxyliques, soit d'acides polycarboxyliques et de composés polyhydroxylés
D01F 6/62 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits d'homopolycondensation à partir de polyesters
A polyester obtained by the esterification of terephthalic acid and ethylene glycol and the polycondensation catalysed by a mixture of magnesium ethylene glycol and antimony ethylene glycol followed by granulation. In the polyester sections, the carboxyl end group is less than 15 mol/t, the mass percentage of oligomer is lower than 0.5%, and weight percentage of diethylene glycol is lower than 0.5%.
C08G 63/86 - Germanium, antimoine ou leurs composés
C25B 3/12 - Production électrolytique de composés organiques de composés organométalliques
D01F 6/62 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits d'homopolycondensation à partir de polyesters
A flame-retardant polyester fiber obtained by spinning flame-retardant polyester and irradiating with ultraviolet light and having a limiting oxygen index value of greater than 30. Flame retardant 2-carboxyethylphenylphosphinic acid to improve the flame retardant properties of polyester, the use of polyester containing unsaturated double bond in UV irradiation, the double bond opens to form a crosslinking point, the formation of a certain amount of the network structure improves the heat-resistant temperature of the poly-fiber and improves the anti-dripping performance of the polyester fiber.
C08G 63/692 - Polyesters contenant des atomes autres que le carbone, l'hydrogène et l'oxygène contenant du phosphore
C08G 63/83 - Métaux alcalins, métaux alcalino-terreux, béryllium, magnésium, cuivre, argent, or, zinc, cadmium, mercure, manganèse ou leurs composés
D01F 1/07 - Addition de substances à la solution de filage ou à la masse fondue pour fabriquer des filaments incombustibles ou ininflammables
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
C08G 63/86 - Germanium, antimoine ou leurs composés
D01F 6/84 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits de copolycondensation à partir de copolyesters
A high-modulus low-shrinkage polyester industrial yarn obtained by subjecting a polyester to dissolution, washing and solid state polycondensation followed by spinning. The high-modulus low-shrinkage polyester industrial yarn has a dry heat shrinkage rate of 2.0±0.25% under test conditions of 177° C.×10 min×0.05 cN/dtex. The average value of the crystal volume Vc of the high-modulus low-shrinkage polyester industrial yarn is larger than 230 nm3. The high-modulus low-shrinkage polyester industrial yarn has a fiber modulus of ≥100 cN/dtex. The polycondensation catalyst consists of magnesium ethylene glycol and antimony ethylene glycol, which has a small thermal degradation coefficient.
C08G 63/83 - Métaux alcalins, métaux alcalino-terreux, béryllium, magnésium, cuivre, argent, or, zinc, cadmium, mercure, manganèse ou leurs composés
D01F 6/62 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits d'homopolycondensation à partir de polyesters
92.
MODIFIED POLYESTER AND PREPARATION METHOD THEREFOR
The present invention relates to a modified polyester and a preparation method therefor. The modified polyester is composed of a terephthalic acid chain segment, an ethylene glycol chain segment, and a dihydric alcohol chain segment containing a branch chain. The dihydric alcohol chain segment containing a branch chain refers to a dihydric alcohol chain segment with a branch chain positioned on one non-terminal carbon of the dihydric alcohol chain segment, wherein the branch chain is a linear carbon chain containing 5 - 10 carbon atoms. The preparation method for the modified polyester involves: carrying out an esterification reaction on terephthalic acid and a dihydric alcohol containing a branch chain under the catalysis of a concentrated sulfuric acid to obtain a dihydric alcohol terephthalate; then, formulating terephthalic acid and ethylene glycol, and carrying out an esterification reaction on same to obtain ethylene glycol terephthalate; and finally, stirring and mixing the two, and under the action of a catalyst and a stabilizing agent, carrying out a polycondensation reaction in a low vacuum stage and a high vacuum stage to obtain the modified polyester. The increasing amplitude in space gaps between molecular chains inside the modified polyester is far greater than that of a branch chain-free polyester at the same temperature, this being beneficial for the degree by which tiny particles such as a dye enter the modified polyester, and improving the dyeing rate.
D01F 6/84 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits de copolycondensation à partir de copolyesters
93.
MULTI-HOLE ULTRA-SOFT SUPERFINE DENIER POLYESTER FIBRE AND PREPARATION METHOD THEREFOR
Disclosed are a porous ultra-soft superfine denier polyester fibre and a preparation method therefor. A modified polyester is spun with a multi-hole spinneret plate to prepare a porous ultra-soft superfine denier polyester fibre; the spinneret orifices in the multi-hole spinneret plate are arranged in an elliptical form, namely the orifice centres of the spinneret orifices are positioned on serial concentric ellipses,wherein the long axes of all the ellipses are collinear, and the short axes are collinear. The multi-hole ultra-soft superfine denier polyester fibre is prepared by subjecting the modified polyester chips to metering, extrusion, cooling, oiling and high-speed winding, and the preparation method for the modified polyester comprises: reacting terephthalic acid and ethylene glycol to prepare ethylene glycol terephthalate, adding a glycol terephthalate prepared by reacting terephthalic acid with branched hexanediol, and continuing to react to obtain the modified polyester. The fibre prepared by the present method has good properties, with a linear density deviation ratio of ≤0.5 percent, a breaking strength CV value of ≤ 4.0 percent, a breaking elongation CV value of ≤ 8.0 percent, and a yarn unevenness CV value of ≤ 2.0 percent.
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
D01F 1/10 - Autres agents modifiant les propriétés de ces filaments
Provided are a high-uniformity coloured polyester industrial yarn and a preparation method therefor. A raw material of the high-uniformity coloured polyester industrial yarn is a modified polyester composed of a terephthalic acid chain segment, an ethylene glycol chain segment and a dihydric alcohol chain segment containing a branched chain. The preparation method for the high-uniformity coloured polyester industrial yarn involves: carrying out an esterification reaction of terephthalic acid and a dihydric alcohol containing a branched chain under the catalysis of a concentrated sulphuric acid to obtain a dihydric alcohol terephthalate; then, formulating terephthalic acid and ethylene glycol, and carrying out an esterification reaction to obtain ethylene glycol terephthalate; finally, stirring and mixing the two, and under the action of a catalyst and a stabilising agent, carrying out a polycondensation reaction in a low vacuum stage and a high vacuum stage to prepare the modified polyester; and metering the modified polyester, adding a black master batch, performing porous spinneret plate extrusion, and cooling, oiling, stretching, heat setting and winding same to prepare the high-uniformity coloured polyester industrial yarn.
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
D01D 5/08 - Méthodes de filage à partir de masses en fusion
D01D 5/088 - Refroidissement des filaments, fils ou similaires, à la sortie des filières
D01D 5/098 - Méthodes de filage à partir de masses en fusion avec étirage simultané
D01D 5/253 - Formation des filaments, fils ou similaires à section transversale non circulaireEnsembles de filage à cet effet
The present invention relates to a different-shrinkage composite yarn and a preparation method therefor. A modified polyester is spun using a multi-hole spinneret plate to produce a different-shrinkage composite yarn, wherein the spinneret holes on the multi-hole spinneret plate are arranged in an elliptical shape mode, i.e., the hole centres of the spinneret holes are in series concentric ellipses, wherein the long axes of all the ellipses are collinear, and the minor axes of all the ellipses are collinear. The differential shrinkage composite yarn is prepared by plying and doubling a modified polyester POY yarn and an FDY yarn, network compounding and finally winding, a method for preparing the modified polyester comprising reacting terephthalic acid with ethylene glycol to prepare ethylene glycol terephthalate, adding a terephthalic acid diol ester prepared by reacting terephthalic acid with a branched chain-bearing diol, and continuing to react to obtain the modified polyester. The fibre prepared by the present invention has a good performance, and the different-shrinkage composite yarn has a linear density deviation ratio of ≤ 2.0％, a breaking strength CV value of ≤ 4.0％, a breaking elongation CV value of ≤ 8.0％, and a crimp contraction variable coefficient CV value of ≤ 8.0％.
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
D01F 1/10 - Autres agents modifiant les propriétés de ces filaments
The present invention relates to an industrial polyester and a preparation method therefor. The method comprises: terephthalic acid and ethylene glycol are esterified, and are prepared into a polyester by means of polycondensation under the catalytic action of a mixture of ethylene glycol magnesium and ethylene glycol antimony, and then the polyester is pelletized to obtain polyester chips, wherein in the polyester chips, the content of terminal carboxyl groups is less than 15 mol/t, the content of oligomers in percentage by mass is less than 0.5%, and the content of diethylene glycol in percentage by mass is less than 0.5%. The ethylene glycol magnesium in the present invention is mild, also serves as a thermal degradation catalyst, has a low thermal degradation coefficient, and causes few side reactions in the reaction process, thereby reducing production of terminal carboxyl groups and oligomers during processing. In the present invention, oligomers produced in the polymerization process are reduced, and thermal degradation during processing is reduced; therefore, impurities in the polyester are greatly reduced. Meanwhile, the amount of nucleating agent in the polyester is reduced, so that the probability of homogeneous nucleation is increased on the basis of reducing heterogeneous nucleation, thereby facilitating the growth of grain size and the optimization of crystallization completeness in polyester industrial yarn fibers.
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
D01F 1/10 - Autres agents modifiant les propriétés de ces filaments
97.
ULTRA-LOW SHRINKAGE POLYESTER INDUSTRIAL YARN AND PREPARATION METHOD THEREOF
The present invention relates to an ultra-low shrinkage polyester industrial yarn and a preparation method thereof. The ultra-low shrinkage polyester industrial yarn is prepared by spinning a polyester after subjecting the polyester to dissolution, washing and solid-phase tackifying. The ultra-low shrinkage polyester industrial yarn has a dry heat shrinkage rate of 1.8 ± 0.25% under test conditions of 177°C, 10 min, and 0.05 cN/dtex. A mixture of an ethylene glycol magnesium and an ethylene glycol antimony is used as a polycondensation catalyst. The mixture has a very small thermal degradation coefficient. The invention reduces oligomers during polymerization, reduces thermal degradation during processing, greatly reduces impurities in the polyester, and lowers nucleating agent content in the polyester, leading to a reduction in heterogeneous nucleation and a corresponding increase in the probability of homogeneous nucleation. The dissolution and washing further decreases oligomer content, facilitating grain growth and optimizing crystalline perfection in the ultra-low shrinkage polyester industrial yarn fiber. The ultra-low shrinkage polyester industrial yarn has characteristics of relatively low dry heat shrinkage and improved dimensional stability, and can therefore be widely used in fabric filters, coated fabrics, hoses, conveyor belt wefts, and the like.
C08G 63/83 - Métaux alcalins, métaux alcalino-terreux, béryllium, magnésium, cuivre, argent, or, zinc, cadmium, mercure, manganèse ou leurs composés
D01F 6/62 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits d'homopolycondensation à partir de polyesters
98.
FLAME RETARDANT POLYESTER FIBER AND PREPARATION METHOD THEREFOR
The present invention relates to flame retardant polyester fiber and a preparation method therefor. The flame retardant polyester fiber is obtained by spinning flame retardant polyester followed by ultraviolet irradiation. The limiting oxygen index value of the flame retardant polyester fiber is greater than 30, and in addition to the flame retardancy, the fiber possesses a desirable anti-dripping property. A flame retardant, 2-carboxyethyl (phenyl)phosphinic acid, is used for improving the flame retardancy of the polyester, and unsaturated double bonds contained in the polyester are opened to form crosslinking points under ultraviolet irradiation to form mesh structures, so that the thermal resistance of the polyester fiber is increased, and the anti-dripping property of the polyester fiber is improved. By introducing unsaturated double bonds into polyester and effectively and safely controlling crosslinking of the polyester after the preparation of polyester fiber is completed, the content of gel in the fiber obtained after crosslinking is greatly increased, and therefore, the mechanical property, thermal resistance, chemical resistance, and flame retardancy of polyester fiber are greatly improved.
D01F 6/84 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits de copolycondensation à partir de copolyesters
D01F 1/07 - Addition de substances à la solution de filage ou à la masse fondue pour fabriquer des filaments incombustibles ou ininflammables
C08G 63/692 - Polyesters contenant des atomes autres que le carbone, l'hydrogène et l'oxygène contenant du phosphore
C08G 63/83 - Métaux alcalins, métaux alcalino-terreux, béryllium, magnésium, cuivre, argent, or, zinc, cadmium, mercure, manganèse ou leurs composés
C08G 63/85 - Germanium, étain, plomb, arsenic, antimoine, bismuth, titane, zirconium, hafnium, vanadium, niobium, tantale ou leurs composés
D01D 5/08 - Méthodes de filage à partir de masses en fusion
99.
HIGH-MODULUS LOW-SHRINKAGE POLYESTER INDUSTRIAL YARN AND PREPARATION METHOD THEREFOR
The present invention relates to a high-modulus low-shrinkage polyester industrial yarn and a preparation method therefor. The high-modulus low-shrinkage polyester industrial yarn is prepared from a polyester by spinning after dissolving-washing and solid state polycondensation. When the high-modulus low-shrinkage polyester industrial yarn is under a testing condition where the temperature is 177˚C × 10min × 0.05 cN/dtex, the dry heat shrinkage of fibers is 2.0 ± 0.25%, the average value of grain volume Vc of the high-modulus low-shrinkage polyester industrial yarn is greater than 230 nm3, and the fiber modulus of the high-modulus low-shrinkage polyester industrial yarn is greater than or equal to 100 cN/dtex. By using a mixture of ethylene glycol magnesium and ethylene glycol antimony as a polycondensation catalyst, the thermal degradation coefficient of said catalyst is very small, so that oligomers produced in a polymerization process are reduced, and thermal degradation during processing is reduced, thereby greatly reducing impurities in the polyester. Meanwhile, the amount of nucleating agent in the polyester is reduced, so that the probability of homogeneous nucleation is increased on the basis of reducing heterogeneous nucleation. The content of the oligomers is further reduced by means of dissolving-washing, thereby facilitating the growth of grain size and the optimization of crystallization perfection in high-modulus low-shrinkage polyester industrial yarn fibers.
C08G 63/83 - Métaux alcalins, métaux alcalino-terreux, béryllium, magnésium, cuivre, argent, or, zinc, cadmium, mercure, manganèse ou leurs composés
D01F 6/62 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de produits d'homopolycondensation à partir de polyesters
100.
LOW-COLOUR-DIFFERENCE POLYESTER DIFFERENTIAL SHRINKAGE COMPOSITE YARN AND PREPARATION METHOD THEREFOR
The present invention relates to a low-colour-difference polyester differential shrinkage composite yarn and a preparation method therefor. The low-colour-difference polyester differential shrinkage composite yarn is obtained by compounding polyester POY yarns and polyester FDY yarns; the polyester POY yarns and the polyester FDY yarns are obtained by spinning a polyester after dissolving-washing same; the low-colour-difference polyester differential shrinkage composite yarn has a breaking strength of greater than or equal to 1.9cN/dtex, an elongation at break of 30.0+/-5.0%, a crimp contraction of 2.50+/-3.0%, an interlacing degree of 20+/-5 pieces per meter in, and a colour difference ΔE of less than 0.200. Ethylene glycol magnesium in the present invention is relatively mild and has a very small thermal degradation coefficient, the oligomers produced in a polymerization process are reduced, and thus the oligomers in the dissolving-washing process are further reduced, so that the occurrence of colour spots and stripes in dyeing, and post-processing and heat setting of polyester fibres is reduced, and the levelling dyeing property and rubbing fastness of the fibres are ensured. The differential shrinkage composite yarn has an excellent shading performance, a superior dyeing performance, high bulkiness and a soft to the touch feel, meanwhile, since a large quantity of loops exist on the surfaces of the fibres, the aurora defect of the chemical fibre filament is also eliminated.
D01F 6/92 - Filaments, ou similaires, faits par l’homme, à un seul composant, formés de polymères synthétiquesLeur fabrication à partir de mélanges de produits de polycondensation comme constituant majeur avec d'autres polymères ou des composés de bas poids moléculaire de polyesters
D01F 1/10 - Autres agents modifiant les propriétés de ces filaments
C08G 63/86 - Germanium, antimoine ou leurs composés
D01D 5/08 - Méthodes de filage à partir de masses en fusion
D06P 1/16 - Procédés généraux de teinture ou d'impression des textiles ou procédés généraux de teinture du cuir, des fourrures ou des substances macromoléculaires solides de toutes formes, classés selon les teintures, les pigments ou les substances auxiliaires utilisés utilisant des matières colorantes en dispersion, p. ex. acétate
