A modified curing agent component and a process for preparing said modified curing agent component is disclosed. The modified curing agent component comprises a compound of Formula I, a compound of Formula II and a compound of Formula III. A recyclable epoxy resin system comprising at least one epoxy resin component and the modified curing agent component is disclosed. The disclosed recyclable epoxy resin system has a curing temperature in the range of 0 °C - 10 °C.
C07C 217/40 - Composés contenant des groupes amino et hydroxy éthérifiés liés au même squelette carboné ayant des groupes hydroxy éthérifiés et des groupes amino liés à des atomes de carbone acycliques du même squelette carboné le squelette carboné étant acyclique et saturé ayant un groupe amino et au moins deux atomes d'oxygène liés par des liaisons simples, dont au moins un fait partie d'un groupe hydroxy éthérifié, liés au squelette carboné, p.ex. éthers de polyhydroxyamines ayant au moins deux atomes d'oxygène liés par des liaisons simples, dont au moins un fait partie d'un groupe hydroxy éthérifié, liés au même atome de carbone du squelette carboné, p.ex. aminocétals, ortho-esters
The present disclosure relates to a continuous process for preparing hydrophobic regenerated cellulosic fiber. Said process comprises treating never-dried cellulosic fiber with a hydrophobic composition comprising 0.05-2.5 weight % of an alkyl ketene dimer based on weight of cellulose. The alkyl ketene dimer has a formula I: wherein both R1 and R2 are hydrocarbon groups having 8-40 carbon atoms and which can be both, saturated or unsaturated, straight-chained or branched. The hydrophobic composition further comprises 0.02-1 weight % of a cationic polymer based on weight of cellulose. After treatment with the hydrophobic composition, the treated fiber is subjected to a drying step to form hydrophobic regenerated cellulose fiber.
The present disclosure relates to a continuous process for preparing hydrophobic regenerated cellulosic fiber. Said process comprises treating never-dried cellulosic fiber with a hydrophobic composition comprising 0.05-2.5 weight % of an alkyl ketene dimer based on weight of cellulose. The alkyl ketene dimer has a formula I: wherein both R1 and R2 are hydrocarbon groups having 8-40 carbon atoms and which can be both, saturated or unsaturated, straight-chained or branched. The hydrophobic composition further comprises 0.02-1 weight % of a cationic polymer based on weight of cellulose. After treatment with the hydrophobic composition, the treated fiber is subjected to a drying step to form hydrophobic regenerated cellulose fiber.
D01F 11/02 - Post-traitement chimique de filaments, ou similaires, faits par l’homme, pendant leur fabrication de cellulose, de dérivés de la cellulose, de protéines
D01F 2/06 - Filaments, ou similaires, artificiels, à un seul composant, formés de cellulose ou de dérivés de la cellulose; Leur fabrication obtenus à partir de la viscose
D06M 15/356 - Composés macromoléculaires obtenus par des réactions faisant intervenir uniquement des liaisons non saturées carbone-carbone d'autres composés non saturés contenant des atomes d'azote, de soufre, de silicium ou de phosphore
Cellulosic material for the production of regenerated cellulosic fiber is disclosed. The cellulosic material comprises reclaimed cellulosic material, wherein the reclaimed cellulosic material is obtained from cellulosic material waste and has an intrinsic viscosity in a range of 170 ml/g to 280 ml/g. A process for preparing reclaimed cellulosic material for the production of regenerated cellulosic fiber is also disclosed.
32222)n; a is an integer in the range of 0-6; b is an integer in the range of 0-4; m is an integer in the range of 0-3; n is an integer in the range of 1-5.
Aditya Birla Science and Technology Company Pvt. Ltd. (Inde)
Grasim Industries Ltd. (Inde)
Inventeur(s)
Mohite, Lalaso Vishnu
Nagarkar, Shailesh Prakash
Shingote, Santosh Shivaji
Thakre, Shirish Sheshrao
Dutta, Suvankar Madhusudan
Kale, Bandu Madhukar
Sharma, Roop Kishore
Limbani, Manishkumar Govindbhai
Pankaj, Srivastava
Dagur, Harendra Singh
Abrégé
The present invention relates to a process for manufacturing lyocell filament yarn with improved mechanical properties and an apparatus thereof. The process involves washing of filament yarn with sequential decrease in NMMO concentrations and filament yarn drying under relaxed conditions. Additionally, the present invention also provides a compact washing and drying apparatus that uses controlled air gap spinning thereby resulting in production of LFY under relaxed conditions and also having a higher mechanical properties & productivity.
122 are hydrocarbon groups having 8-40 carbon atoms and which can be both, saturated or unsaturated, straight-chained or branched. The hydrophobic composition further comprises 0.02 - 1 weight % of a cationic polymer based on weight of cellulose. After treatment with the hydrophobic composition, the treated fiber is subjected to a drying step to form hydrophobic regenerated cellulose fiber.
C08G 73/00 - Composés macromoléculaires obtenus par des réactions créant dans la chaîne principale de la macromolécule une liaison contenant de l'azote, avec ou sans oxygène ou carbone, non prévus dans les groupes
A high tenacity regenerated cellulosic fiber is disclosed. Said high tenacity regenerated cellulosic fiber is prepared from a cellulosic raw material, wherein the cellulosic raw material comprises 5-100 wt% of a pre-treated bacterial cellulose having a degree of polymerization in a range of 450-2000; and 0 to 95 wt% of an additional cellulosic material selected from a group consisting of dissolving grade pulp, recycled cotton pulp, reclaimed cellulosic material and a mixture thereof. Said fiber has a tenacity of at least 4.5 grams/denier and elongation of at least 10%, measured in accordance with ASTM D 3822.
C08L 1/00 - Compositions contenant de la cellulose, de la cellulose modifiée ou des dérivés de la cellulose
D01F 2/24 - Filaments, ou similaires, artificiels, à un seul composant, formés de cellulose ou de dérivés de la cellulose; Leur fabrication à partir de dérivés de la cellulose
A high tenacity regenerated cellulosic fiber is disclosed. Said high tenacity regenerated cellulosic fiber is prepared from a cellulosic raw material, wherein the cellulosic raw material comprises 5-100 wt% of a pre-treated bacterial cellulose having a degree of polymerization in a range of 450-2000; and 0 to 95 wt% of an additional cellulosic material selected from a group consisting of dissolving grade pulp, recycled cotton pulp, reclaimed cellulosic material and a mixture thereof. Said fiber has a tenacity of at least 4.5 grams/denier and elongation of at least 10%, measured in accordance with ASTM D 3822.
C08L 1/00 - Compositions contenant de la cellulose, de la cellulose modifiée ou des dérivés de la cellulose
D01F 2/24 - Filaments, ou similaires, artificiels, à un seul composant, formés de cellulose ou de dérivés de la cellulose; Leur fabrication à partir de dérivés de la cellulose
D01F 2/06 - Filaments, ou similaires, artificiels, à un seul composant, formés de cellulose ou de dérivés de la cellulose; Leur fabrication obtenus à partir de la viscose
D06P 1/62 - 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 u utilisant des pigments insolubles ou des substances auxiliaires, p.ex. liants utilisant des compositions contenant des composés organiques de poids moléculaire faible, avec des groupes sulfate ou sulfonate
Cellulosic material for the production of regenerated cellulosic fiber is disclosed. The cellulosic material comprises reclaimed cellulosic material, wherein the reclaimed cellulosic material is obtained from cellulosic material waste and has an intrinsic viscosity in a range of 170 ml/g to 280 ml/g. A process for preparing reclaimed cellulosic material for the production of regenerated cellulosic fiber is also disclosed.
D21C 3/22 - Autres caractéristiques des procédés de réduction en pâte
D21H 11/12 - Pâte obtenue à partir de végétaux ou de récoltes non ligneux, p.ex. coton, lin, paille ou bagasse
D21C 5/00 - Autres procédés pour obtenir de la cellulose, p.ex. cuisson des linters de coton
D01F 13/02 - Récupération des matériaux de départ, résidus ou solvants, pendant la fabrication de filaments, ou similaires, faits par l’homme de cellulose, de dérivés de la cellulose, de protéines
D01F 2/02 - Filaments, ou similaires, artificiels, à un seul composant, formés de cellulose ou de dérivés de la cellulose; Leur fabrication obtenus à partir de solutions de cellulose dans des acides, des bases ou des sels
Cellulosic material for the production of regenerated cellulosic fiber is disclosed. The cellulosic material comprises reclaimed cellulosic material, wherein the reclaimed cellulosic material is obtained from cellulosic material waste and has an intrinsic viscosity in a range of 170 ml/g to 280 ml/g. A process for preparing reclaimed cellulosic material for the production of regenerated cellulosic fiber is also disclosed.
D01F 2/02 - Filaments, ou similaires, artificiels, à un seul composant, formés de cellulose ou de dérivés de la cellulose; Leur fabrication obtenus à partir de solutions de cellulose dans des acides, des bases ou des sels
D01F 13/02 - Récupération des matériaux de départ, résidus ou solvants, pendant la fabrication de filaments, ou similaires, faits par l’homme de cellulose, de dérivés de la cellulose, de protéines
D21C 3/22 - Autres caractéristiques des procédés de réduction en pâte
D21H 11/12 - Pâte obtenue à partir de végétaux ou de récoltes non ligneux, p.ex. coton, lin, paille ou bagasse
The present disclosure relates to an acid regenerated cellulose fiber having wet tenacity of at least 1.7 grams per denier; conditioned tenacity of at least 3.0 grams per denier; and degree of polymerization of less than 300.
D01F 2/06 - Filaments, ou similaires, artificiels, à un seul composant, formés de cellulose ou de dérivés de la cellulose; Leur fabrication obtenus à partir de la viscose
D01F 2/02 - Filaments, ou similaires, artificiels, à un seul composant, formés de cellulose ou de dérivés de la cellulose; Leur fabrication obtenus à partir de solutions de cellulose dans des acides, des bases ou des sels
D21H 13/08 - Fibres cellulosiques synthétiques à partir de cellulose régénérée
A process of preparing moulded cellulosic material from reclaimed cellulosic material is disclosed. The process comprises the steps of: treating the reclaimed cellulosic material with at least one bleaching compound, to decolourise (if any) and to reduce the degree of polymerization of the reclaimed cellulosic material to a cupriethylenediamine viscosity less than 500ml/g, to obtain bleached reclaimed cellulosic material; washing the bleached reclaimed cellulosic material with water; shredding the bleached and washed reclaimed cellulosic material, to obtain treated reclaimed cellulosic material; preparing a dope for a viscose or lyocell process comprising the treated reclaimed cellulosic material; and preparing a moulded cellulosic material from the dope so prepared.
The present disclosure relates to the field of fibres for non-woven fabric, particularly to curled shortcut fibres for non-woven fabric, and a process for their preparation. The curled shortcut fibres of the present disclosure have a length in the range of 3 mm to 25 mm and denier in the range of 1.0 to 3.0. The curled shortcut fibres have a curled shape, wherein the shortest distance between the two ends of at least 50% of the curled shortcut fibres is in the range of 70% to 90% of the total length of the curled shortcut fibres. The curled shortcut fibres have a fibre-to-fibre friction in the range of 100 Nm/s to 500 Nm/s. A non-woven fabric comprising curled shortcut fibres of the present disclosure is also provided. The non-woven fabric comprising curled shortcut fibres has comparatively better wet strength and better flushability.
D04H 3/00 - Non-tissés formés uniquement ou principalement de fils ou de matériaux filamenteux similaires de bonne longueur
B32B 5/26 - Produits stratifiés caractérisés par l'hétérogénéité ou la structure physique d'une des couches caractérisés par la présence de plusieurs couches qui comportent des fibres, filaments, grains ou poudre, ou qui sont sous forme de mousse ou essentiellement poreuses une des couches étant fibreuse ou filamenteuse un autre couche également étant fibreuse ou filamenteuse
D02G 1/00 - Production de fibres, filaments, filés ou fils, crêpés ou ondulés ou leur donnant de telles caractéristiques latentes
ADITYA BIRLA SCIENCE AND TECHNOLOGY COMPANY PVT. LTD. (Inde)
GRASIM INDUSTRIES LTD. (Inde)
Inventeur(s)
Mohite, Lalaso Vishnu
Nagarkar, Shailesh Prakash
Shingote, Santosh Shivaji
Thakre, Shirish Sheshrao
Dutta, Suvankar Madhusudan
Kale, Bandu Madhukar
Sharma, Roop Kishore
Limbani, Manishkumar Govindbhai
Pankaj, Srivastava
Dagur, Harendra Singh
Abrégé
The present invention relates to a process for manufacturing lyocell filament yarn with improved mechanical properties and an apparatus thereof. The process involves washing of filament yarn with sequential decrease in NMMO concentrations and filament yarn drying under relaxed conditions. Additionally, the present invention also provides a compact washing and drying apparatus that uses controlled air gap spinning thereby resulting in production of LFY under relaxed conditions and also having a higher mechanical properties & productivity.
12344 is hydrogen; (c) subjecting the treated regenerated cellulosic fiber to a moisture regulating step such that the moisture content in the treated cellulosic fiber is not more than 120% of weight of the treated cellulosic fiber; and (d) curing the treated cellulosic fiber at a temperature ranging between 100° C and 145° C, to obtain regenerated cellulosic fiber which is cationically modified by 3-halo-2- hydroxyalkyl-N,N,N-tri-alkyl or aryl substituted ammonium compound having formula I, or a salt thereof in an amount ranging between 1.5 to 33 % by weight.
A process for preparing an aromatic N-glycidylamine comprising a step of heating a mixture of an amine having at least one aromatic aminohydrogen atom with at least 0.7 equivalent of epichlorohydrin per aminohydrogen equivalent of the amine in presence of a catalyst dissolved in an inert organic solvent, at a pressure in a range of 200 mbar to 600 mbar; and adding a base to the mixture at a pressure in a range of 200 mbar to 600 mbar to facilitate dehydrochlorination of product of the previous step to obtain the aromatic N-glycidylamine.
An antibacterial regenerated cellulosic fiber is disclosed. The antibacterial regenerated cellulosic fiber comprises a quaternary ammonium compound in a concentration range of 0.05 – 1% w/w on the regenerated cellulosic fiber.
A process for preparing an aromatic N- glycidylamine comprising a step of heating a mixture of an amine having at least one aromatic aminohydrogen atom with at least 0.7 equivalent of epichlorohydrin per aminohydrogen equivalent of the amine in presence of a catalyst dissolved in an inert organic solvent, at a pressure in a range of 200 to 600 mbar; and adding a base to the mixture at a pressure in a range of 200 to 600 mbar to facilitate dehydrochlorination of product of the previous step to obtain the aromatic N- glycidylamine.
This invention relates to a process of making fibril-free lyocell fabric from a fibrillated fabric wherein the fibrillated fabric is contacted with a cross linking agent and metal salt catalyst at 120-210°C for a period ranging from 10 sec to 5 mins to obtain a cross- linked fibrillated fabric, subjecting the cross linked fibrillated fabric to further treatment with an inorganic alkali solution at 60-90°C and 0-10 bar pressure followed by washing with a solution of sodium hexameta phosphate at 60-120°C.
D06M 11/72 - Traitement des fibres, fils, filés, tissus ou des articles fibreux faits de ces matières, avec des substances inorganiques ou leurs complexes; Un tel traitement combiné avec un traitement mécanique, p.ex. mercerisage avec du phosphore ou ses composés, p.ex. avec de l'acide chlorophosphonique ou avec ses sels avec des acides perphosphoriques ou leurs sels
D06M 15/29 - Composés macromoléculaires obtenus par des réactions faisant intervenir uniquement des liaisons non saturées carbone-carbone d'amides ou d'imides d'acides carboxyliques non saturés contenant un groupe N-sulfidométhylène
A process for manufacturing low- fibrillating cellulosic fibers by a dry-jet-wet spinning process is provided. The cellulose is treated with a specific ionic liquid based solvent to produce the said fibers with fibrillating index less than or equal to (3).
The present invention provides a process for producing low fibrillating cellulose fibers by a dry-jet- wet spinning process wherein cellulose is treated with a solvent containing imidazolium ionic salt in a spinneret maintained at a temperature of 100-120 0C and the spun fibers drawn to the coagulation bath containing ionic salt with the draw ratio less than 5, to produce fibers with fibrillating index less than or equal to 3.
Yarns and threads; Yarns and threads for woven fabric and textile use; woven fabrics in this class. Textiles and textile goods, not included in other classes; bedding goods; woven fabrics in this class.
