Disclosed is a polyester resin composition that contains a polybutylene terephthalate resin (A) and a polyethylene terephthalate resin (B). The amount of terminal hydroxyl groups in the polybutylene terephthalate resin (A) is 30-70 mmol/kg with respect to the total amount of the polybutylene terephthalate resin (A) and the polyethylene terephthalate resin (B).
C08L 67/03 - Les acides dicarboxyliques et les composés dihydroxylés ayant les groupes hydroxy et carboxyliques liés directement à des cycles aromatiques
C08K 3/013 - Charges, pigments ou agents de renforcement
Provided are: a recycled polyarylene sulfide resin composition adhering little dirt to a metal mold during molding; and a method for producing the same. This method for producing a recycled polyarylene sulfide resin composition (Z) comprises: a preparation step for preparing a pulverized product (X) of an article containing 100 parts by mass of a polyarylene sulfide resin (P) and 1-20 parts by mass of an elastomer (Q); and a melt-kneading step for melt-kneading the pulverized product (X) and an antioxidant (Y), the blended amount of the antioxidant (Y) being 0.025-0.25 parts by mass per 1 part by mass of the elastomer (Q) contained in the pulverized product (X).
To provide a coated recycled material having little mold contamination during molding, and to provide a method for producing the same. Provided is a method for producing a coated recycled material (Z) that includes: the preparation of a recycled material (z1) for articles that contains 100 mass parts of a polyarylene sulfide resin (P) and 1-20 mass parts of an elastomer (Q); and the coating of at least part of the surface of the recycled material (z1) by an antioxidant (A). The amount of antioxidant (A) applied during coating is 0.025-0.25 mass parts per mass part of the elastomer (Q) contained in the recycled material (z1).
A polyacetal resin composition according to the present invention contains 100 parts by mass of an (A) polyacetal resin, 1-100 parts by mass of (B) glass fibers, 0.001-2 parts by mass of a (C) bonding catalyst, and 0.002-10 parts by mass of a (D) triazine derivative having a nitrogen-containing functional group. The (B) glass fibers are surface-treated with a surface treatment agent including a boric acid compound and at least one selected from blocked isocyanate compounds, aminosilane coupling agents, epoxy resins, and polyurethane resins. The (C) bonding catalyst is at least one selected from onium salts, and organic metal compounds having a metal element selected from zinc (Zn), tin (Sb), and lead (Pb).
The present invention addresses the problem of providing a method for producing a cyclic olefin copolymer, capable of suppressing generation of polyethylene-like impurities. The present invention provides a method for producing a cyclic olefin copolymer, the production method involving addition polymerization of a norbornene monomer and ethylene, wherein the addition polymerization is performed under prescribed conditions in the presence of a borate compound, alkylaluminium, and a catalyst.
C08F 232/04 - Copolymères de composés cycliques ne contenant pas de radicaux aliphatiques non saturés dans une chaîne latérale et contenant une ou plusieurs liaisons doubles carbone-carbone dans un système carbocyclique ne contenant pas de cycles condensés contenant une seule double liaison carbone-carbone
C08F 4/6592 - Composant couvert par le groupe contenant une liaison métal de transition-carbone contenant au moins un cycle cyclopentadiényle, condensé ou non, p. ex. un cycle indényle ou fluorényle
A polyacetal resin composition according to the present invention contains 100 parts by mass of an (A) polyacetal resin, 1-100 parts by mass of (B) glass fibers, and 0.002-10 parts by mass of a (C) triazine derivative having a nitrogen-containing functional group. The (B) glass fibers are surface-treated with a surface treatment agent including a boric acid compound and at least one selected from blocked isocyanate compounds, aminosilane coupling agents, epoxy resins, and polyurethane resins.
A polyarylene sulfide resin composition that is suitable for laser welding, and a method for producing the same are provided. A method for improving the laser beam transmittance of a molded body containing a polyarylene sulfide resin is also provided. The resin composition for laser welding contains: 100 parts by mass of a polyarylene sulfide resin; and at least 0.03 parts by mass and at most 1.05 parts by mass of a laser beam transmittance improving agent including at least one material selected from the group consisting of potassium hydroxide, sodium hydroxide, sodium acetate, calcium hydroxide, potassium acetate, lithium hydroxide, lithium acetate, zinc hydroxide, zinc acetate, magnesium hydroxide, zinc oxide, zinc carbonate, and zinc carbonate basic.
B29K 81/00 - Utilisation de polymères contenant dans la chaîne principale uniquement du soufre avec ou sans azote, oxygène ou carbone comme matière de moulage
B29K 505/00 - Utilisation de métaux, leurs alliages ou leurs composés comme matière de remplissage
A cyclic olefin copolymer that is a copolymer of a cyclic olefin monomer and an α-olefin having 3 or more and 20 or less carbon atoms, which has excellent tensile strength and breaking strain, and a method for producing the cyclic olefin copolymer. In the copolymer, the amount of structural units derived from the α-olefin is 10 mol % or more and 50 mol % or less relative to the entire structural units, and in the relaxation time T1ρ of a hydrogen nucleus by solid-state NMR measurement for the cyclic olefin copolymer, the average value of the relaxation time corresponding to each hydrogen in the cyclic olefin copolymer is in the range of 4.5 to 5.5 msec, and the difference between the maximum value and the minimum value of the relaxation time is in the range of 1.0 to 3.0 msec.
C08F 232/08 - Copolymères de composés cycliques ne contenant pas de radicaux aliphatiques non saturés dans une chaîne latérale et contenant une ou plusieurs liaisons doubles carbone-carbone dans un système carbocyclique contenant des cycles condensés
C08F 4/659 - Composant couvert par le groupe contenant une liaison métal de transition-carbone
C08F 4/6592 - Composant couvert par le groupe contenant une liaison métal de transition-carbone contenant au moins un cycle cyclopentadiényle, condensé ou non, p. ex. un cycle indényle ou fluorényle
C08F 210/14 - Monomères contenant au moins cinq atomes de carbone
Provided is a low gloss poly(butylene terephthalate) resin composition which exhibits excellent jet-blackness and has little gloss unevenness. A poly(butylene terephthalate) resin composition according to the present invention contains: (A) a poly(butylene terephthalate) resin; (B) a polycarbonate resin; (C) glass flakes; and (D) carbon black. The poly(butylene terephthalate) resin (A) includes (a1) a modified poly(butylene terephthalate) resin containing 5-30 mol% of a comonomer unit. The glass flakes (C) have an average thickness of 1 µm or less and a median diameter of 5-70 μm. Relative to 100 parts by mass of the poly(butylene terephthalate) resin (A), the content of the polycarbonate resin (B) is 60-100 parts by mass, the content of the glass flakes (C) is 60-100 parts by mass, and the content of the carbon black (D) is 0.8-15 parts by mass.
Provided are a liquid crystalline resin composition which has good fluidity, and from which a molded body that is excellent in terms of low-dust generation properties, low slide wear properties, low warping properties, and suppression of inward collapse deformation in a well-balanced manner is obtained, and a camera module using the same. A liquid crystalline resin composition according to the present invention contains (A) a liquid crystalline resin, (B) a granular filler, (C) a plate-shaped filler, and (D) an olefin-based polymer, wherein: the median diameter of the component (B) is 0.3 µm to 8 µm; the median diameter of the component (C) is 10 μm to 50 μm; the component (D) includes an epoxy group-containing olefin-based polymer; and with respect to the entire liquid crystalline resin composition, the content of the component (A) is 52% by mass to 82% by mass, the content of the component (B) is 2.5% by mass to 35% by mass, the content of the component (C) is 5% by mass to 35% by mass, the total content of the component (B) and the component (C) is 15% by mass to 45% by mass, the content of the component (D) is 1.50% by mass to 6.00% by mass, and the content of the epoxy group is 0.003% by mass to 0.050% by mass.
C08L 101/12 - Compositions contenant des composés macromoléculaires non spécifiés caractérisées par des propriétés physiques, p. ex. anisotropie, viscosité ou conductivité électrique
C08K 3/30 - Composés contenant du soufre, du sélénium ou du tellure
G03B 30/00 - Modules photographiques comprenant des objectifs et des unités d'imagerie intégrés, spécialement adaptés pour être intégrés dans d'autres dispositifs, p. ex. des téléphones mobiles ou des véhicules
11.
LIQUID CRYSTALLINE RESIN AND LIQUID CRYSTALLINE RESIN COMPOSITION
C08G 63/60 - Polyesters dérivés soit d'acides hydroxycarboxyliques, soit d'acides polycarboxyliques et de composés polyhydroxylés dérivés de la réaction d'un mélange d'acides hydroxycarboxyliques, d'acides polycarboxyliques et de composés polyhydroxylés
12.
LIQUID CRYSTALLINE RESIN COMPOSITION AND CAMERA MODULE USING SAME
The present invention provides: a liquid crystalline resin composition which gives a molded article that is excellent in terms of resistance to depression, low warpage, and low dust generation during sliding in a balanced manner; and a camera module which uses the same. A liquid crystalline resin composition according to the present invention contains (A) a liquid crystalline resin, (B) a plate-like filler, and (C) an epoxy group-containing olefin polymer. The average particle diameter of the component (B) is 1-12 μm. Relative to the entire liquid crystalline resin composition, the content of the component (A) is 75-94% by mass, the content of the component (B) is 5-20% by mass, and the content of the component (C) is 1-6% by mass.
C08L 101/12 - Compositions contenant des composés macromoléculaires non spécifiés caractérisées par des propriétés physiques, p. ex. anisotropie, viscosité ou conductivité électrique
C08K 3/013 - Charges, pigments ou agents de renforcement
C08L 23/26 - Compositions contenant des homopolymères ou des copolymères d'hydrocarbures aliphatiques non saturés ne possédant qu'une seule liaison double carbone-carboneCompositions contenant des dérivés de tels polymères modifiées par post-traitement chimique
C08L 67/03 - Les acides dicarboxyliques et les composés dihydroxylés ayant les groupes hydroxy et carboxyliques liés directement à des cycles aromatiques
The problems addressed by the present invention are to provide a cyclic olefin copolymer having a plurality of glass transition temperatures and good toughness, and a method for producing the same. The present invention provides a cyclic olefin copolymer which is an addition-type polymer of a norbornene monomer and a C3-20 alpha-olefin, wherein the ratio of the number of mol of structural units derived from the alpha-olefin to the number of mol of all structural units in the cyclic olefin copolymer is 10-90 mol%, the number average molecular weight of the cyclic olefin copolymer is from more than 20,000 to 500,000, and the cyclic olefin copolymer has two or more glass transition temperatures by viscoelasticity measurement within the range of 0-350° C.
C08F 232/00 - Copolymères de composés cycliques ne contenant pas de radicaux aliphatiques non saturés dans une chaîne latérale et contenant une ou plusieurs liaisons doubles carbone-carbone dans un système carbocyclique
C08F 4/6592 - Composant couvert par le groupe contenant une liaison métal de transition-carbone contenant au moins un cycle cyclopentadiényle, condensé ou non, p. ex. un cycle indényle ou fluorényle
14.
POLYETHER KETONE RESIN COMPOSITION AND MOLDED ARTICLE
Provided are: a polyether ketone resin composition containing (A) 50-90 mass% of a polyether ketone resin, (B) 5-40 mass% of a carbon fiber, (C) 1-20 mass% of graphite, and (D) 1-20 mass% of boron nitride; and a molded article obtained by molding the polyether ketone resin composition. The boron nitride (D) preferably has a median diameter (D50) of 10 μm or less and a specific surface area of 20 m2/g or more.
A resin composition suitable for manufacturing a laser light transmission-side molded article; and a laser light transmission-side molded article are disclosed. A method for improving the laser light transmission properties of a resin composition molded article is also disclosed. The resin composition includes: 100 parts by mass of a polyalkylene terephthalate resin (A); 10-100 parts by mass of a polycarbonate resin (B); 0.1-3 parts by mass of a carbodiimide compound (C); 0-100 parts by mass of an inorganic filler (D); and an inorganic phosphorus compound (E). The method includes blending 0.1-3 parts by mass of a carbodiimide compound (C) in a resin composition including 100 parts by mass of a polyalkylene terephthalate resin (A), 10-100 parts by mass of a polycarbonate resin (B), 0-100 parts by mass of an inorganic filler (D), and an inorganic phosphorus compound (E).
A cyclic olefin copolymer that is a copolymer of a cyclic olefin monomer and an α-olefin having 3 or more and 20 or less carbon atoms, which has excellent tensile strength and breaking strain, and a method for producing the cyclic olefin copolymer. In the copolymer, the amount of structural units derived from the α-olefin is 10 mol % or more and 50 mol % or less relative to the entire structural units, and in a one-dimensional scattering curve with respect to the scattering vector q of small angle X-ray scattering for the cyclic olefin copolymer, a value obtained by dividing the half value width of a primary peak by the q value of the peak top thereof is in the range of 0.15 to 0.45.
C08F 232/04 - Copolymères de composés cycliques ne contenant pas de radicaux aliphatiques non saturés dans une chaîne latérale et contenant une ou plusieurs liaisons doubles carbone-carbone dans un système carbocyclique ne contenant pas de cycles condensés contenant une seule double liaison carbone-carbone
C08F 4/659 - Composant couvert par le groupe contenant une liaison métal de transition-carbone
C08F 4/6592 - Composant couvert par le groupe contenant une liaison métal de transition-carbone contenant au moins un cycle cyclopentadiényle, condensé ou non, p. ex. un cycle indényle ou fluorényle
C08F 210/14 - Monomères contenant au moins cinq atomes de carbone
17.
POLYETHER ETHER KETONE RESIN COMPOSITION AND MOLDED ARTICLE
Provided are: a polyether ether ketone resin composition containing (A) 40-80 mass% polyether ether ketone resin, (B) 5-30 mass% carbon fibers, (C) 5-25 mass% graphite, and (D) 5-25 mass% polytetrafluoroethylene; and a molded article formed by molding the polyether ether ketone resin composition. The (D) polytetrafluoroethylene preferably exhibits a weight loss rate of 0.5 mass% or less when heated from 30°C to 400°C at a temperature increase rate of 10°C/min in the presence of an airflow.
Provided is a fully aromatic ether ketone resin composition including: (A) a fully aromatic ether ketone resin; and (B) a phosphorus stabilizer, in which (B) the phosphorus stabilizer contains (B1) a dihydrogen phosphate and (B2) a hydrogen phosphate, (B1) the dihydrogen phosphate is one or more dihydrogen phosphates of alkali metals or one or more dihydrogen phosphates of alkaline earth metals and the like, (B2) the hydrogen phosphate is one or more hydrogen phosphates of alkali metals or one or more hydrogen phosphates of alkaline earth metals and the like, (B1) the dihydrogen phosphate and (B2) the hydrogen phosphate are contained in a predetermined combination, and a total amount of (B) the phosphorus stabilizer is 100 to 5000 mass ppm.
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
17 - Produits en caoutchouc ou en matières plastiques; matières à calfeutrer et à isoler
Produits et services
Unprocessed plastics; artificial resins, unprocessed;
unprocessed plastics for industrial use; unprocessed
plastics in primary form; chemicals used in industry;
unprocessed plastic in the form of pellet, powder, flake or
grain; synthetic resins, unprocessed; thermoplastic resins,
unprocessed; polymer resins, unprocessed; unprocessed
artificial resins for industrial purposes; unprocessed
synthetic resins for use in the manufacture of plastic
molding compounds. Plastic semi-worked products; plastic substances,
semi-processed; semi-processed plastics; semi-processed
synthetic resins; artificial resins, semi-processed;
semi-processed polymers in pellet form; semi-processed
thermoplastics in pellet form; semi-worked synthetic plastic
and synthetic resins as semi-finished products in form of
pellets, rods, foils, foams, fibers, films and sheets.
20.
METHOD FOR SUPPRESSING GENERATION OF BURRS DURING INJECTION MOLDING OF POLYBUTYLENE TEREPHTHALATE RESIN COMPOSITION
A method for suppressing burrs generated during injection molding of a polybutylene terephthalate resin composition, the method including adding a cyclic carbodiimide compound (B) to a polybutylene terephthalate resin (A).
Provided are: a cyclic olefin copolymer that comprises a structural unit derived from a norbornene monomer, and a structural unit derived from an olefin selected from ethylene and α-olefin, and that exhibits excellent water vapor barrier properties; a resin composition that comprises the cyclic olefin copolymer; and a molded article that is formed of the cyclic olefin copolymer or the resin composition. This cyclic olefin copolymer comprises: structural units N derived from a norbornene monomer; and structural units O derived from an olefin selected from ethylene and α-olefin. The amount of the structural units N forming a diad formed through binding of two of the structural units N together and the amount of the structural units N forming a triad formed through binding of three of the structural units N are small within a predetermined range. The ratio Mm/Mr of the mol number Mr of racemic diad and the mole number of Mm of meso diad is within a predetermined range.
C08F 232/00 - Copolymères de composés cycliques ne contenant pas de radicaux aliphatiques non saturés dans une chaîne latérale et contenant une ou plusieurs liaisons doubles carbone-carbone dans un système carbocyclique
The present invention provides a method for producing a cyclic olefin copolymer, the method making it possible to produce a cyclic olefin copolymer that has a low glass transition temperature and contains a structural unit derived from a norbornene monomer and a structural unit derived from an olefin selected from ethylene and α-olefins. A metal-containing catalyst that satisfies specific parameters and has a structure in which one or more ligands are coordinated to a central metal is used when producing a norbornene copolymer by polymerizing monomers including a norbornene monomer and an olefin selected from ethylene and α-olefins while the norbornene monomer is in a molten state.
C08F 232/00 - Copolymères de composés cycliques ne contenant pas de radicaux aliphatiques non saturés dans une chaîne latérale et contenant une ou plusieurs liaisons doubles carbone-carbone dans un système carbocyclique
C08F 4/6592 - Composant couvert par le groupe contenant une liaison métal de transition-carbone contenant au moins un cycle cyclopentadiényle, condensé ou non, p. ex. un cycle indényle ou fluorényle
C08F 210/00 - Copolymères d'hydrocarbures aliphatiques non saturés contenant une seule liaison double carbone-carbone
23.
POLYBUTYLENE TEREPHTHALATE RESIN COMPOSITION, AND MOLDED ARTICLE
This polybutylene terephthalate resin composition contains: a polybutylene terephthalate resin (A) having a terminal carboxyl group content of 25 meq/kg or less; and a cyclic carbodiimide compound (B). The content of a polyvalent hydroxyl group-containing compound (C-1), which is a polyhydric alcohol or a partial ester thereof, having a hydroxyl number of 200 or more is less than 0.05 parts by mass with respect to 100 parts by mass of the polybutylene terephthalate resin (A). The polybutylene terephthalate resin composition satisfies formula 1. In formula 1, a represents the carbodiimide group content (meq/kg) per 1 kg of the polybutylene terephthalate resin composition, and b represents the intrinsic viscosity (dL/g) of the polybutylene terephthalate resin (A). Formula 1: (-15.4×b)+19.3≤a≤(-57.4×b)+59.3
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
17 - Produits en caoutchouc ou en matières plastiques; matières à calfeutrer et à isoler
Produits et services
Unprocessed plastics; artificial resins, unprocessed;
unprocessed plastics for industrial use; unprocessed
plastics in primary form; chemicals used in industry;
unprocessed plastics in the form of pellets, powder, flakes
or granules; synthetic resins, unprocessed; thermoplastic
resins, unprocessed; polymer resins, unprocessed;
unprocessed artificial resins for industrial purposes;
unprocessed synthetic resins for use in the manufacture of
plastic molding compounds. Plastic semi-worked products; plastic substances,
semi-processed; semi-processed plastics; semi-processed
synthetic resins; artificial resins, semi-processed.
25.
POWDER MATERIAL FOR 3D PRINTER, THREE-DIMENSIONAL MODELED ARTICLE, AND METHOD FOR PRODUCING THREE-DIMENSIONAL MODELED ARTICLE
Provided is a powder material for a 3D printer, the powder material exhibiting excellent fluidity and being capable of suppressing the occurrence of flying of the powder material during modeling. Also provided are a three-dimensional modeled article obtained using the powder material for a 3D printer, the three-dimensional modeled article exhibiting excellent appearance and excelling in mechanical characteristics and heat resistance, and a method for producing the three-dimensional modeled article. A powder material (X) for a 3D printer comprises a polyacetal copolymer resin powder (I) and metal oxide particles (II). The content of the particles (II) is 0.01-0.5 mass% with respect to the total mass of the powder material (X).
B29C 64/153 - Procédés de fabrication additive n’utilisant que des matériaux solides utilisant des couches de poudre avec jonction sélective, p. ex. par frittage ou fusion laser sélectif
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
Produits et services
Unprocessed artificial resins; Unprocessed synthetic resins; Unprocessed polymer resins; Unprocessed artificial resins for industrial purposes; Thermoplastic resins, unprocessed; Unprocessed plastics; Unprocessed plastics for industrial use; Unprocessed plastics in primary form; Unprocessed plastic in the form of powder or granules; Unprocessed synthetic resins for use in the manufacture of plastic molding compounds
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
Produits et services
Unprocessed artificial resins; Unprocessed synthetic resins; Unprocessed polymer resins; Unprocessed artificial resins for industrial purposes; Thermoplastic resins, unprocessed; Unprocessed plastics; Unprocessed plastics for industrial use; Unprocessed plastics in primary form; Unprocessed plastic in the form of powder or granules; Unprocessed synthetic resins for use in the manufacture of plastic molding compounds
28.
POWDERY MATERIAL FOR 3D PRINTER, THREE-DIMENSIONAL SHAPED OBJECT, AND PRODUCTION METHOD THEREFOR
The present invention provides a powdery material for a 3D printer from which a high-density and high-strength three-dimensional shaped object having an excellent appearance can be fabricated, a three-dimensional shaped object obtained by using the same, and a production method therefor. The powdery material (X) for a 3D printer is a powdery material (X) comprising a polyacetal copolymer resin powder (I), wherein a percentage occupied by comonomer units among all constituent units (100 mass %) in the polyacetal copolymer resin is at least 1.0 mass % and at most 6.0 mass %, an average particle diameter of the powder (I) is at least 30 μm and at most 70 μm, and a melt flow rate of the powder (I) measured at a temperature of 190° C. and with a load of 2.16 kg is at least 1.0 g/10 min and at most 8.0 g/10 min.
B29C 64/153 - Procédés de fabrication additive n’utilisant que des matériaux solides utilisant des couches de poudre avec jonction sélective, p. ex. par frittage ou fusion laser sélectif
B29K 59/00 - Utilisation de polyacétals comme matière de moulage
B29K 71/00 - Utilisation de polyéthers comme matière de moulage
B29K 105/00 - Présentation, forme ou état de la matière moulée
Provided is an electromagnetic wave shielding and absorbing molded article which has an excellent shielding property and absorbency of electromagnetic waves of specific frequencies. The electromagnetic wave shielding and absorbing molded article includes a thermoplastic resin composition containing a thermoplastic resin and carbon fibers. The carbon fibers have a weighted average fiber length in the molded article in a range from 0.05 to 8.0 mm, and the content ratio of the carbon fibers in the molded article is from 0.05 to 45 mass %. The electromagnetic wave shielding and absorbing molded article has a thickness from 0.01 mm to 5 mm, a shielding property of 10 dB or greater and an absorbency of 5% or greater for electromagnetic waves having any frequency in a frequency domain from 59 GHz to 100 GHz.
H01Q 17/00 - Dispositifs pour absorber les ondes rayonnées par une antenneCombinaisons de tels dispositifs avec des éléments ou systèmes d'antennes actives
H05K 9/00 - Blindage d'appareils ou de composants contre les champs électriques ou magnétiques
30.
METHOD FOR PRODUCING CONTINUOUS CELLULOSE FIBER HAVING IMPROVED THERMAL STABILITY
The present invention addresses the problem of providing a method for producing a continuous cellulose fiber having improved thermal stability by an industrially feasible method. The present invention is a method for producing a continuous cellulose fiber having improved thermal stability, the method comprising: immersing a continuous cellulose fiber in an aqueous medium containing a compound (A) capable of reacting with a reducing terminal or a hydroxyl group of cellulose; causing the continuous cellulose fiber to absorb the aqueous medium; and then drying the continuous cellulose fiber. The series of steps are successively performed while the continuous cellulose fiber is wound or taken up.
D06B 3/06 - Passage des matières textiles à travers des liquides, gaz ou vapeurs en vue d'effectuer un traitement, p. ex. lavage, teinture, blanchiment, encollage, imprégnation de filés, fils ou filaments manipulés individuellement
D06M 11/82 - 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 avec du bore ou ses composés, p. ex. borures avec des oxydes de boreTraitement 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 avec du bore ou ses composés, p. ex. borures avec des acides boriques, méta- ou perboriques ou leurs sels, p. ex. avec du borax
Provided is a method for producing a polysaccharide-containing article, whereby it becomes possible to produce an article of which the thermal stability is improved uniformly. The method for producing a polysaccharide-containing article having improved thermal stability comprises: causing the article to absorb an aqueous medium containing a compound (A) capable of reacting with a hydroxyl group or a reducing end of the polysaccharide (step (I)); adjusting the content ratio of the aqueous medium to 10 to 1,000 mass% with respect to the whole mass of the article before the absorption of the aqueous medium (step (II)); and drying the article (step (III)).
C08B 15/00 - Préparation d'autres dérivés cellulosiques ou de cellulose modifiée
32.
REGENERATED CELLULOSE FIBER FOR RESIN REINFORCEMENT, METHOD FOR PRODUCING DISCOLORATION-INHIBITED REGENERATED CELLULOSE FIBER, RESIN COMPOSITION, PELLET AND METHOD FOR PRODUCING SAME, AND MOLDED ARTICLE
A first problem is to provide a discoloration-inhibited regenerated cellulose fiber for resin reinforcement. A second problem is to provide, inter alia, a regenerated cellulose fiber-containing resin composition that is resistant to the heat-induced generation of a poor appearance. A third problem is to provide a method for producing a discoloration-inhibited regenerated cellulose fiber. The first problem can be solved by a regenerated cellulose fiber for resin reinforcement, that contains at least one compound (A) selected from weak acids and monohydric and higher hydric alcohols. The second problem can be solved by a resin composition comprising: a regenerated cellulose fiber containing at least one compound (A) selected from weak acids and monohydric and higher hydric alcohols; and a thermoplastic resin or a thermosetting resin. The third problem can be solved by a method for producing a regenerated cellulose fiber, the method comprising heating the aforementioned regenerated cellulose fiber at 200-300°C.
C08J 3/215 - Formation de mélanges de polymères avec des additifs, p. ex. coloration en présence d'une phase liquide le polymère étant prémélangé avec une phase liquide au moins un additif étant également prémélangé avec une phase liquide
C08L 101/00 - Compositions contenant des composés macromoléculaires non spécifiés
D06M 11/82 - 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 avec du bore ou ses composés, p. ex. borures avec des oxydes de boreTraitement 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 avec du bore ou ses composés, p. ex. borures avec des acides boriques, méta- ou perboriques ou leurs sels, p. ex. avec du borax
The present invention pertains to a metal-resin composite molded article in which a metallic member and a polyarylene sulfide-based resin composition member are joined, and in which, in one surface of the metallic member, the arithmetical average curvature of a peak of a surface portion joined to the polyarylene sulfide-based resin composition member is 5000-7000 (1/mm), and the melt viscosity, specified by ISO 11433, of a polyarylene sulfide-based resin composition forming the polyarylene sulfide-based resin composition member is 20-210 Pa·s under a condition of 310°C and 1000 sec-1. The purpose of the present invention is to increase airtightness at a portion at which the metallic member and the polyarylene sulfide-based resin composition member are joined.
B29C 45/14 - Moulage par injection, c.-à-d. en forçant un volume déterminé de matière à mouler par une buse d'injection dans un moule ferméAppareils à cet effet en incorporant des parties ou des couches préformées, p. ex. moulage par injection autour d'inserts ou sur des objets à recouvrir
B23K 26/352 - Travail par rayon laser, p. ex. soudage, découpage ou perçage pour le traitement de surface
C08L 23/02 - Compositions contenant des homopolymères ou des copolymères d'hydrocarbures aliphatiques non saturés ne possédant qu'une seule liaison double carbone-carboneCompositions contenant des dérivés de tels polymères non modifiées par un post-traitement chimique
A laser transmissive resin composition is disclosed with high laser transmissiveness, good color development, and in which color transfer does not occur and a molded article using the same. The laser transmissive resin composition (I) includes, with respect to 100 parts by mass of a polyester-based resin (A), 0.005-5.0 parts by mass of an organic pigment (B) including at least a benzimidazolone-based yellow pigment (b1), wherein a 1 mm thick molded article of the resin composition (I) has a CIE L* value of 25 or less and a 940 nm laser transmittance of 40% or greater.
B29K 67/00 - Utilisation de polyesters comme matière de moulage
B29K 105/00 - Présentation, forme ou état de la matière moulée
35.
FULLY AROMATIC ETHER KETONE RESIN COMPOSITION, METHOD OF PRODUCING THE SAME, MOLDED ARTICLE, AND METHOD OF ENHANCING RETENTION STABILITY OF MELT VISCOSITY OF THE RESIN COMPOSITION
Provided is a fully aromatic ether ketone resin composition including: (A) a prescribed fully aromatic ether ketone resin; and (B) a salt composed of an acid and a base, in which a pH thereof obtained by performing measurement by means of a pH measurement method below is 6 to 8.
[pH measurement method] (a)
To 10 g of a powder of the fully aromatic ether ketone resin composition, 5 mL of acetone is added, then 100 mL of pure water is added thereto, a mixture is stirred for 10 minutes, and then the mixture is subjected to filtration.
(b) 0.1 mL of pure water is added dropwise to a residue obtained by volatilizing a liquid component of a filtrate obtained.
(c) A temperature is set to 25° C., and the pH is measured by contacting a pH test paper with the pure water added dropwise.
A method for controlling an injection molding machine in which a resin melted in a cylinder is injected into a mold to form an injection-molded article, wherein: during a single injection-molding of a reference article which is an injection-molded article evaluated as being a proper article, a peak pressure in the mold and either a pressure decrease time from the start of injection until the pressure inside the mold becomes zero or an integrated pressure value from the start of injection until the pressure inside the mold becomes zero are acquired in advance; and, during injection molding of an article to be produced, the cylinder temperature is adjusted so that the peak pressure inside the mold becomes equal to the peak pressure in the mold for the reference article, and the temperature inside the mold is adjusted so that the pressure decrease time or the integrated pressure value becomes equal to the pressure decrease time or the integrated pressure value for the reference article.
Provided are: a liquid crystalline resin composition which has excellent fluidity and from which a molded body having an excellent balance of low-dust emitting properties, low slide wear properties, low warping properties, and mechanical strength is obtained; and a camera module using the liquid crystalline resin composition. A liquid crystalline resin composition according to the present invention contains (A) a liquid crystalline resin, (B) a plate-like filler, and (C) an olefin-based polymer. The median diameter of component (B) is 8-50 µm. Component (C) contains an olefin-based polymer including epoxy groups. With respect to the entirety of the liquid crystalline resin composition, the contained amount of component (A) is 54-87 mass%, the contained amount of component (B) is 10-40 mass%, the contained amount of component (C) is 2.75-6.00 mass%, and the contained amount of the epoxy groups is not less than 0.003 mass% but less than 0.048 mass%.
C08L 67/00 - Compositions contenant des polyesters obtenus par des réactions créant une liaison ester carboxylique dans la chaîne principaleCompositions contenant des dérivés de tels polymères
C08K 13/04 - Ingrédients caractérisés par leur forme et ingrédients organiques ou inorganiques
C08L 23/00 - Compositions contenant des homopolymères ou des copolymères d'hydrocarbures aliphatiques non saturés ne possédant qu'une seule liaison double carbone-carboneCompositions contenant des dérivés de tels polymères
Provided are: a method for improving the releasability of regenerated pellets from a mold; and coated regenerated resin pellets excellent in releasability from a mold. The method is for improving the releasability of regenerated pellets containing a polyarylene sulfide resin, the method including: coating at least a portion of the surfaces of pellets containing a polyarylene sulfide resin with a compound (A) that includes at least one selected from: (A-1) an olefin resin having a melt viscosity of 0.1 to 8.0 Pa·s at 140°C; (A-2) a fatty acid derivative; and (A-3) a silicone-based compound. The total amount of compound (A) coating is 0.04 to 3.0 parts by mass relative to 100 parts by mass of the pellets (Q).
C08J 11/06 - Récupération ou traitement des résidus des polymères sans réaction chimique
C08L 23/00 - Compositions contenant des homopolymères ou des copolymères d'hydrocarbures aliphatiques non saturés ne possédant qu'une seule liaison double carbone-carboneCompositions contenant des dérivés de tels polymères
This polybutylene terephthalate resin composition comprises (A) a polybutylene terephthalate resin having an intrinsic viscosity of 0.70-1.10 dL/g, inclusive, and a carboxylic acid end group amount of 5-18 meq/kg, inclusive, and (B) glass fibers that have been surface-treated with a sizing agent containing an epoxy resin and a polymer comprising a constituent unit derived from a carboxylic acid and/or a carboxylic anhydride.
Provided is a liquid-crystalline resin composition that has a low dielectric constant, a low dielectric loss tangent, and excellent blackness. This liquid-crystalline resin composition contains (A) a liquid-crystalline resin, (B) a hollow filler, and (C) carbon black. There are 5–85 parts by mass of the (B) hollow filler and 0.1–7 parts by mass of the (C) carbon black per 100 parts by mass of the (A) liquid-crystalline resin, and the number average particle diameter of the (C) carbon black is 20–100 nm. The (A) liquid-crystalline resin is preferably an aromatic polyester or an aromatic polyesteramide that includes, as a constituent component, a constituent unit derived from at least one compound selected from the group that consists of aromatic hydroxycarboxylic acids and derivatives thereof. The (B) hollow filler is preferably glass balloons. The dielectric loss tangent of the liquid-crystalline resin composition at a measurement frequency of 5 GHz is preferably no more than 0.0067.
C08L 101/12 - Compositions contenant des composés macromoléculaires non spécifiés caractérisées par des propriétés physiques, p. ex. anisotropie, viscosité ou conductivité électrique
The present invention provides: a recycled polyarylene sulfide resin composition which exhibits excellent releasability from a mold; and a method for producing this recycled polyarylene sulfide resin composition. This recycled polyarylene sulfide resin composition (Y) contains: 100 parts by mass of a material (X) for recycling, which is a ground product of articles containing a polyarylene sulfide resin; and a total of 0.1 part by mass to 3.0 parts by mass of a compound (A) that contains one or more compounds selected from among (A-1) an olefin resin having a melt viscosity of 0.1 Pa∙s to 8.0 Pa∙s at 140°C, (A-2) a fatty acid derivative and (A-3) a silicone compound.
C08J 3/20 - Formation de mélanges de polymères avec des additifs, p. ex. coloration
C08L 23/00 - Compositions contenant des homopolymères ou des copolymères d'hydrocarbures aliphatiques non saturés ne possédant qu'une seule liaison double carbone-carboneCompositions contenant des dérivés de tels polymères
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
17 - Produits en caoutchouc ou en matières plastiques; matières à calfeutrer et à isoler
40 - Traitement de matériaux; recyclage, purification de l'air et traitement de l'eau
Produits et services
Unprocessed plastics; artificial resins, unprocessed;
unprocessed plastics for industrial use; unprocessed
plastics in primary form; chemicals used in industry;
unprocessed plastic in the form of pellet, powder, flake or
grain; synthetic resins, unprocessed; thermoplastic resins,
unprocessed; polymer resins, unprocessed; unprocessed
artificial resins for industrial purposes; unprocessed
synthetic resins for use in the manufacture of plastic
molding compounds. Plastic semi-worked products; plastic substances,
semi-processed; semi-processed plastics; semi-processed
synthetic resins; artificial resins, semi-processed;
semi-processed polymers in pellet form; semi-processed
thermoplastics in pellet form; recycled plastic in the form
of pellet, powder, flake or grain for use in further
manufacturing; recycled plastics in extruded form for use in
further manufacturing; recycled thermoplastic compounds in
pellet form for use in further manufacture; semi-worked
synthetic plastic and synthetic resins as semi-finished
products in form of pellets, rods, foils, foams, fibers,
films and sheets. Recycling of plastic; processing of plastics; recycling of
waste; providing information relating to material treatment;
sorting of waste and recyclable material; upcycling in the
nature of waste recycling; waste transformation; waste
processing; recycling of waste materials; recycling of
chemicals.
Provided is a method for producing a polyacetal copolymer, the production method comprising: a step for obtaining a crude polyacetal copolymer by copolymerizing trioxane as a main monomer (a) and, as a comonomer (b), a compound that can be copolymerized with trioxane, by using a protonic acid as a polymerization catalyst (c); a step for obtaining a mixture by introducing the crude polyacetal copolymer and a solution of a basic compound (d) into a prescribed continuous mixing device and mixing the contents thereof; and a step for inserting the mixture into an extruder and carrying out melt kneading. The basic compound (d) is a carbonate, a hydrogen carbonate, or the like of an alkali metal element or a Group 2 element (excluding Be), and the solvent in the solution of the basic compound (d) is a solvent having active hydrogen.
Disclosed is a method for producing a polyacetal copolymer, the method comprising: a step for obtaining a crude polyacetal copolymer by copolymerizing trioxane as a main monomer (a) and a compound copolymerizable with trioxane as a comonomer (b) using a protonic acid as a polymerization catalyst (c); a step for obtaining a mixture by mixing the crude polyacetal copolymer and a solution of a basic compound (d); and a step for melt-kneading the mixture by putting the mixture into an extruder, while adding a deactivator (e) of the polymerization catalyst (c) to the mixture. The solution of the basic compound (d) is obtained by dissolving an organic compound that contains nitrogen or phosphorus into an organic solvent that has no active hydrogen.
Provided is a method for producing a copolymer of a cyclic olefin monomer and an α-olefin having 3-20 carbon atoms, the method such that a cyclic olefin copolymer having excellent toughness can be efficiently produced. A copolymer of a cyclic olefin monomer and an α-olefin having 3-20 carbon atoms is produced using a method including: a first polymerization in which monomers including a cyclic olefin monomer and an α-olefin are polymerized in a polymerization vessel in the presence of a titanocene catalyst, an alkyl aluminum compound and a borate compound; addition of an alkyl aluminum compound in isolation to the polymerization vessel following the first polymerization; and following the addition of an alkyl aluminum compound, a second polymerization in which a monomer is added to the polymerization vessel and subsequently polymerized.
C08F 4/6592 - Composant couvert par le groupe contenant une liaison métal de transition-carbone contenant au moins un cycle cyclopentadiényle, condensé ou non, p. ex. un cycle indényle ou fluorényle
C08F 232/00 - Copolymères de composés cycliques ne contenant pas de radicaux aliphatiques non saturés dans une chaîne latérale et contenant une ou plusieurs liaisons doubles carbone-carbone dans un système carbocyclique
The present invention provides a method for producing a cyclic olefin copolymer which makes it possible to efficiently produce a cyclic olefin copolymer that is a copolymer of a cyclic olefin monomer and a C3-20 α-olefin, and that has excellent toughness. A copolymer of a cyclic olefin monomer and a C3-20 α-olefin is produced by a method comprising: a first polymerization in which a cyclic olefin monomer and a monomer including an α-olefin are polymerized in a polymerization container and in the presence of a titanocene catalyst, an alkylaluminum compound, and a borate compound; addition of the monomer and the alkylaluminum compound to the polymerization container after the first polymerization; and a second polymerization in which, after the addition of the monomer and the alkylaluminum compound, polymerization of the monomer is continued.
C08F 4/6592 - Composant couvert par le groupe contenant une liaison métal de transition-carbone contenant au moins un cycle cyclopentadiényle, condensé ou non, p. ex. un cycle indényle ou fluorényle
C08F 232/00 - Copolymères de composés cycliques ne contenant pas de radicaux aliphatiques non saturés dans une chaîne latérale et contenant une ou plusieurs liaisons doubles carbone-carbone dans un système carbocyclique
47.
RESIN COMPOSITION AND METHOD FOR PRODUCING SAME, AND MOLDED ARTICLE
Provided are: a resin composition that can provide molded articles having excellent moist heat resistance and good mechanical properties; a method for producing the resin composition; and molded articles of the resin composition. The resin composition comprises: a polyolefin resin (A) comprising a polypropylene resin (A1) and an acid-modified polypropylene resin (A2) having an acid concentration (in terms of maleic anhydride) (v1) of 0.01-0.5 mol/kg; regenerated cellulose fibers (B); and an epoxy compound (C) having an epoxy group concentration (f1) of 0.1-6.0 mol/kg. Relative to the total mass of the resin composition, the polyolefin resin (A) content is 25-90 mass% and the regenerated cellulose fibers (B) content is 5-70 mass%, and the ratio (R) of the epoxy group concentration to the acid concentration in the resin composition, represented by formula (1), is 0.9 or more.
C08J 5/06 - Renforcement des composés macromoléculaires avec des matériaux fibreux en vrac ou en nappes utilisant des matériaux fibreux prétraités
C08L 1/00 - Compositions contenant de la cellulose, de la cellulose modifiée ou des dérivés de la cellulose
C08L 23/26 - Compositions contenant des homopolymères ou des copolymères d'hydrocarbures aliphatiques non saturés ne possédant qu'une seule liaison double carbone-carboneCompositions contenant des dérivés de tels polymères modifiées par post-traitement chimique
C08L 63/00 - Compositions contenant des résines époxyCompositions contenant des dérivés des résines époxy
48.
LIQUID CRYSTALLINE RESIN COMPOSITION AND CONNECTOR USING SAME
Provided are a liquid crystalline resin composition with good flowability and mold release properties, having excellent mechanical strength and providing a molded body with suppressed blistering, and a connector using the same. A liquid crystalline resin composition according to the present invention contains (A) a liquid crystalline resin, (B) whiskers, (C) an epoxy group-containing olefinic polymer, and (D) a polyhydric alcohol fatty acid ester, wherein, relative to the total liquid crystalline resin composition, the content of (B) the whiskers is 20-40 mass%, the content of (C) the epoxy group-containing olefinic polymer is 0.5-6 mass%, and the content of (D) the polyhydric alcohol fatty acid ester is 0.1-2.0 mass%. The liquid crystalline resin composition according to the present invention further contains (E) a plate-like filler, and the content of (E) the plate-like filler is 5-15 mass% relative to the total liquid crystalline resin composition. A molded body according to the present invention contains the liquid crystalline resin composition. A connector according to the present invention is formed of the molded body.
C08L 67/00 - Compositions contenant des polyesters obtenus par des réactions créant une liaison ester carboxylique dans la chaîne principaleCompositions contenant des dérivés de tels polymères
C08G 63/60 - Polyesters dérivés soit d'acides hydroxycarboxyliques, soit d'acides polycarboxyliques et de composés polyhydroxylés dérivés de la réaction d'un mélange d'acides hydroxycarboxyliques, d'acides polycarboxyliques et de composés polyhydroxylés
C08K 5/103 - EstersÉthers-esters d'acides monocarboxyliques avec des polyalcools
This polyacetal copolymer production method comprises: a step in which a trioxane and a comonomer that can be copolymerized with the troxane in the presence of a polymerization catalyst are copolymerized by a polymerization device; and a step in which a crude polyacetal copolymer obtained in the abovementioned step is melted/kneaded by an extruder. The polymerization catalyst is a protonic acid. In the melting/kneading step, a basic compound solution is added after the initiation of melting/kneading and before the completion of melting/kneading.
Provided is an elastic modulus computation method for a resin-molded product having a weld, the elastic modulus computation method comprising: acquiring a relationship between the surface temperature and the shrinkage factor of the resin-molded product having a weld which has been taken out of the mold and is being cooled; acquiring, from a joint plate composed of a primary side plate including a material with a heat expansion coefficient different from that of the resin material of the resin-molded product and a secondary side plate including the same resin material as the resin-molded product and having a weld, measured values of both the surface temperature of the secondary side plate and the warping amount of the joint plate; acquiring a relationship between the surface temperature and the elastic modulus of the secondary side plate on the basis of the measured shrinkage factor of the resin-molded product having the weld, the acquired warping amount of the joint plate, and a CAE analysis that uses an analysis model including a weld and a normal part in the secondary side plate; and acquiring a relationship between the surface temperature and the elastic modulus of the resin-molded product which has been taken out of the mold and is being cooled, on the basis of the relationship between the surface temperature and the elastic modulus of the secondary side plate.
Provided are a liquid crystal resin composition that has good fluidity and yields an excellent molded body having a good balance of low dust generation, low sliding wear, impact resistance, and mechanical strength and a camera module that uses the liquid crystal resin composition. The liquid crystal resin composition according to the present invention contains (A) a liquid crystal resin, (B) a filler, and (C) an olefin polymer. Component (B) contains (B1) a fibrous filler and/or (B2) a nonfibrous filler. Component (B2) is a plate-like filler and/or a granular filler. The weight average fiber length of component (B1) is 5-200 μm, and the median diameter of each of the plate-like filler and granular filler is 50 μm or less. Component (C) contains an epoxy-group-containing olefin polymer. Relative to the entire liquid crystal resin composition, the content of component (A) is 57-87 mass%, the content of component (B) is 10-40 mass%, the content of component (C) is 2.75-6.00 mass%, and the content of the epoxy groups is 0.003 mass% to less than 0.048 mass%.
C08L 101/12 - Compositions contenant des composés macromoléculaires non spécifiés caractérisées par des propriétés physiques, p. ex. anisotropie, viscosité ou conductivité électrique
C08K 3/013 - Charges, pigments ou agents de renforcement
C08K 3/30 - Composés contenant du soufre, du sélénium ou du tellure
In a polyacetal copolymer production method according to the present invention, trioxane and a comonomer that can be copolymerized with trioxane are copolymerized in the presence of a polymerization catalyst. The polymerization catalyst is a heteropolyacid (A) and a heteropolyacid salt (B), and the heteropolyacid (A) and heteropolyacid salt (B) are mixed for use.
A polyacetal copolymer production method comprising a step for copolymerizing trioxane as a primary monomer (a) and a compound that can be copolymerized with trioxane as a comonomer (b), during which the copolymerization reaction is carried out using a heteropolyacid having a prescribed structure as a polymerization catalyst (c) in the presence of a compound (d) containing a functional group that has an unsaturated bond between a nitrogen atom and a carbon atom or between a nitrogen atom and an oxygen atom, a basic compound (e) is added to the unrefined polyacetal copolymer obtained via the copolymerization reaction, and the product is melt kneaded.
The present invention is a method for producing a polyacetal copolymer that includes a step that copolymerizes trioxane as the main monomer (a) with a compound that can be copolymerized with trioxane as the comonomer (b), in which step a copolymerization reaction is carried out using a heteropoly acid having a predetermined structure as a polymerization catalyst (c) as a solution of a solvent having an active hydrogen, and a basic compound (d) is added to and melt kneaded with the crude polyacetal copolymer obtained.
An embodiment of the present invention is a metal-resin composite molded product in which a metal member and a thermoplastic resin are joined together. This metal-resin composite molded product has projections and recesses formed on a joined face, of one face of the metal member, where the metal member is joined to the thermoplastic resin. Substantially spherical clusters are formed on a joined surface part, and the arithmetic mean curvature of peaks of the cluster is 2500-5000 (1/mm).
TOKYO METROPOLITAN PUBLIC UNIVERSITY CORPORATION (Japon)
Inventeur(s)
Suzuki Ken
Tada Tomoyuki
Nomura Kotohiro
Abrégé
The present invention provides a method for producing a cyclic olefin copolymer, the method enabling efficient production of a cyclic olefin copolymer through copolymerization of monomers including ethylene and a norbornene monomer, while suppressing generation of polyethylene-like impurities. Monomers including a norbornene monomer and ethylene are polymerized in the presence of a metal-containing catalyst that has a specific structure. A compound which has a bond represented by M-A-Z is used as the metal-containing catalyst. M represents a group 4 transition metal atom of the periodic table. A represents an oxygen atom, a sulfur atom, a selenium atom or a tellurium atom; and Z represents a phenyl group having a substituent. With respect to the phenyl group represented by Z, a hydrocarbon group which may contain a silicon atom or a germanium atom is bonded at the para position of the position at which A is bonded.
C08F 232/00 - Copolymères de composés cycliques ne contenant pas de radicaux aliphatiques non saturés dans une chaîne latérale et contenant une ou plusieurs liaisons doubles carbone-carbone dans un système carbocyclique
C08F 4/6592 - Composant couvert par le groupe contenant une liaison métal de transition-carbone contenant au moins un cycle cyclopentadiényle, condensé ou non, p. ex. un cycle indényle ou fluorényle
Provided is a method for predicting the generation behavior of a void generated inside an injection-molded article obtained by injection-molding a thermoplastic resin into a mold, the method comprising: a step for creating an analysis model in which the injection-molded article is divided into a plurality of elements; a step for calculating a temperature distribution and a pressure distribution of the analysis model in a thermoplastic resin molding step; a step for changing the temperature distribution or the pressure distribution; a step for calculating, from the temperature distribution and the pressure distribution after the change, an elastic modulus distribution and a temperature load distribution of the analysis model using temperature dependency data of the elastic modulus, data of the thermal expansion coefficient, and PVT data of the thermoplastic resin that have been measured in advance; a step for calculating distortion caused in the respective elements of the analysis model by a structural analysis using the elastic modulus distribution and the temperature load distribution; and a step for predicting the location of the occurrence of a void and/or the quantity of a void from the distortion.
Provided are a three-dimensional shaped object obtained from a crystalline thermoplastic resin and having excellent mechanical properties and a method for producing the three-dimensional shaped object. The three-dimensional shaped object is one obtained by a fused filament fabrication method from a filament comprising a crystalline thermoplastic resin, and has a void content of 5% or less. The method for producing the three-dimensional shaped object comprises using a 3D printer to form layers from a filament comprising a crystalline thermoplastic resin by the fused filament fabrication method to thereby form a three-dimensional shaped object. It is preferable that the set ejection-amount value to be input to the 3D printer or to data processing software for the 3D printer be larger than 100%.
B29C 64/118 - Procédés de fabrication additive n’utilisant que des matériaux liquides ou visqueux, p. ex. dépôt d’un cordon continu de matériau visqueux utilisant un matériau filamentaire mis en fusion, p. ex. modélisation par dépôt de fil en fusion [FDM]
Provided is a filament for three-dimensional molding, with which three-dimensional molding by the fused filament fabrication method can be carried out. Also provided are: a three-dimensional molded article that uses the filament for three-dimensional molding; and a method for producing this three-dimensional molded article. This filament for three-dimensional molding contains a polyacetal resin; exhibits a difference (Tm2-Tc) between the melting point Tm2 and crystallization temperature Tc, as measured by differential scanning calorimetry, of 22-40°C; and exhibits a melt flow rate, measured at a temperature of 190°C and a load of 2.16 kg, of 0.8 g/10 min to 8.0 g/10 min.
B29C 64/118 - Procédés de fabrication additive n’utilisant que des matériaux liquides ou visqueux, p. ex. dépôt d’un cordon continu de matériau visqueux utilisant un matériau filamentaire mis en fusion, p. ex. modélisation par dépôt de fil en fusion [FDM]
Provided is a method for analyzing an orientation state of a filler in a resin molded article, the method having a slice image acquisition step for acquiring slice images in a prescribed direction for at least a portion of a resin molded article obtained by molding a resin composition that includes a filler in a prescribed ratio, a power spectrum image acquisition step for selecting one or not less than two slice images from the slice images and acquiring power spectrum images by performing a Fourier transform on the selected slice images, and an orientation state analysis step for analyzing the orientation state of the filler in each power spectrum image on the basis of the power spectrum images and expressing the orientation state in numerical form.
G01N 23/046 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p. ex. rayons X ou neutrons, non couvertes par les groupes , ou en transmettant la radiation à travers le matériau et formant des images des matériaux en utilisant la tomographie, p. ex. la tomographie informatisée
Provided is a polyarylene sulfide resin composition that can give molded articles that exhibit an excellent bending strength and an excellent impact strength. The polyarylene sulfide resin composition comprises a polyarylene sulfide resin (A); a fibrous inorganic filler (B) that has an aspect ratio of at least 3.0, wherein this aspect ratio is the ratio between the major axis and minor axis of a cross section perpendicular to the longitudinal direction; and an alkoxysilane compound (C). The cooling crystallization temperature (Tc) of the polyarylene sulfide resin (A) is at least 215°C; the content of the fibrous inorganic filler (B) that has an aspect ratio of at least 3.0, wherein this aspect ratio is the ratio between the major axis and minor axis of a cross section perpendicular to the longitudinal direction, is 55 to 180 parts by mass per 100 parts by mass of the polyarylene sulfide resin (A); and the content of the alkoxysilane compound (C) is 0.5 to 10 parts by mass per 100 parts by mass of the polyarylene sulfide resin (A).
A polyarylene sulfide resin composition which yields a molded article with excellent toughness, as well as a molded article and an optical ferrule, which are produced using the polyarylene sulfide resin composition. In a polyarylene sulfide resin composition containing a polyarylene sulfide resin and silica particles, a specific amount of a polyarylene sulfide resin having a melt viscosity of 35 to 80 Pa·s, and a specific amount of silica particles having a lower content of coarse powders with a particle size of 45 μm or more are employed.
A transparent article is obtained by molding a cyclic olefin copolymer or a resin composition containing the cyclic olefin copolymer. The cyclic olefin copolymer is obtained by a process that at least includes a step of preparing a norbornene monomer and ethylene as monomers in a polymerization vessel and a step of polymerizing the monomers in the polymerization vessel in the presence of a metal-containing catalyst. The metal-containing catalyst satisfies predetermined conditions.
C08F 232/08 - Copolymères de composés cycliques ne contenant pas de radicaux aliphatiques non saturés dans une chaîne latérale et contenant une ou plusieurs liaisons doubles carbone-carbone dans un système carbocyclique contenant des cycles condensés
G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques
64.
METHOD FOR CALCULATING ACTUAL CONTACT RATIO OF THERMOPLASTIC RESIN GEAR, METHOD FOR DERIVING COEFFICIENT OF FRICTION OF THERMOPLASTIC RESIN GEAR, METHOD FOR PREDICTING TOOTH ROOT TEMPERATURE OF THERMOPLASTIC RESIN GEAR, AND METHOD FOR PREDICTING SERVICE LIFE OF THERMOPLASTIC RESIN GEAR
This method for calculating an actual contact ratio of a thermoplastic resin gear includes: a step 1 for measuring a temperature distribution of a pair of gears; a step 2 for employing CAE structural analysis to calculate a temperature distribution of a structural analysis model A having the same shape as the pair of gears; a step 3 for preparing temperature dependency data of a modulus of elasticity a of a thermoplastic resin; a step 4 for performing, in any order, a step 4a for correcting the modulus of elasticity a in accordance with a strain rate dependency, and a step 4b for correcting the modulus of elasticity a in accordance with an actual amount of deformation of the gears; a step 5 for using a modulus of elasticity a' after correction to calculate a contact stress distribution by means of CAE structural analysis; a step 6 for calculating an angular difference from a start point to an end point of meshing of the pair of gears on the basis of the contact stress distribution; and a step 7 for calculating the actual contact ratio of the pair of gears from the angular difference.
METHOD FOR CALCULATING ACTUAL MESHING RATIO OF THERMOPLASTIC RESIN GEARS, METHOD FOR CALCULATING FRICTION COEFFICIENT OF THERMOPLASTIC RESIN GEARS, METHOD FOR PREDICTING TOOTH ROOT TEMPERATURE OF THERMOPLASTIC RESIN GEARS, AND METHOD FOR PREDICTING SERVICE LIFE OF THERMOPLASTIC RESIN GEARS
This method for calculating the actual meshing ratio of thermoplastic resin gears includes: step 1 for measuring the temperature distribution of a pair of gears; step 2 for calculating, by CAE structural analysis, the temperature distribution of a structural analysis model A having the same shape as the pair of gears; step 3 for readying temperature dependence data regarding the elastic modulus a of the thermoplastic resin; step 4 for performing, in no particular order, step 4a for correcting the elastic modulus a with strain rate dependence and step 4b for correcting the elastic modulus a with the actual deformation amount of the gears; step 5 for calculating the contact stress distribution by CAE structural analysis using the corrected elastic modulus a'; step 6 for calculating, on the basis of the contact stress distribution, the angular difference from the start point to the end point of meshing in the pair of gears; and step 7 for calculating, from the angular difference, the actual meshing ratio of the pair of gears.
A polyalkylene terephthalate resin composition containing a polyalkylene terephthalate resin (A), a carbodiimide compound (B), and an inorganic filler (C) that has been surface treated by a sizing agent containing an epoxy resin and a polymer that contains a structural unit derived from a carboxylic acid and/or a carboxylic anhydride, in which the polyalkylene terephthalate resin composition contains 0.4-10 mass parts of the carbodiimide compound (B) per 100 mass parts of the polyalkylene terephthalate resin (A).
A production method for a cyclic olefin copolymer which is capable of efficiently producing a cyclic olefin copolymer by copolymerizing monomers including a norbornene monomer and ethylene while suppressing the formation of a polyethylene-like impurity. The monomers including a norbornene monomer and ethylene are polymerized in the presence of a metallocene catalyst containing a cyclopentadiene ligand which is substituted with an alkyl group optionally substituted with a halogen atom, or a trialkylsilyl group, and satisfies specific conditions for substituent(s).
C08F 4/6592 - Composant couvert par le groupe contenant une liaison métal de transition-carbone contenant au moins un cycle cyclopentadiényle, condensé ou non, p. ex. un cycle indényle ou fluorényle
68.
METHOD FOR PRODUCING THERMOPLASTIC RESIN COMPOSITION
A method for producing a thermoplastic resin composition, the method including a kneading step for melting and kneading a thermoplastic resin and bundles of fibrous filler inside a barrel using a twin screw extruder having a pair of screws inside the barrel, wherein the method for producing a thermoplastic resin composition includes a pre-kneading step for melting and kneading the thermoplastic resin and bundles of fibrous filler inside the barrel in advance before the kneading step, the pre-kneading step is implemented in a pre-kneading zone positioned on the upstream side of a kneading zone where the kneading step is implemented, kneading discs are installed on the pair of screws inside the pre-kneading zone, and the maximum value of the distance between the distal end of the kneading disc and the position on the inner wall of the barrel that opposes the distal end of the kneading disc is 1.00-4.00 mm.
B29C 48/57 - Vis pourvues d’éléments de malaxage de type disque, p. ex. avec des éléments de forme ovale
B29B 7/48 - MélangeMalaxage continu, avec dispositifs mécaniques de mélange ou de malaxage avec dispositifs de mélange ou de malaxage mobiles rotatifs avec plus d'un arbre à dispositifs à engrènement, p. ex. à vis qui s'engrènent
B29C 48/40 - Moyens pour plastifier ou homogénéiser la matière à mouler ou pour la forcer dans la filière ou la matrice utilisant des vis entourées par un fourreau coopérant, p. ex. des extrudeuses à vis simple utilisant au moins deux vis parallèles, p. ex. extrudeuses à vis doubles
B29C 48/655 - Vis comportant au moins deux filetages ayant au moins trois filetages
C08J 3/20 - Formation de mélanges de polymères avec des additifs, p. ex. coloration
C08J 5/04 - Renforcement des composés macromoléculaires avec des matériaux fibreux en vrac ou en nappes
Provided are a composite resin material capable of providing a molded article having excellent mechanical strength and good appearance, and a molded article of the composite resin material. A composite resin material that comprises: at least one plant component-containing material (A) selected from the group consisting of a resin composition (A-1) containing a plant-derived filler (a-1) and a thermoplastic resin (a-2), a thermoplastic resin (A-2) containing a plant material-derived monomer unit, and a thermoplastic starch (A-3); and a resin composition (B) containing a thermoplastic resin (b-1) and regenerated cellulose fibers (b-2).
C08L 3/00 - Compositions contenant de l'amidon, de l'amylose ou de l'amylopectine ou leurs dérivés ou leurs produits de dégradation
C08L 23/02 - Compositions contenant des homopolymères ou des copolymères d'hydrocarbures aliphatiques non saturés ne possédant qu'une seule liaison double carbone-carboneCompositions contenant des dérivés de tels polymères non modifiées par un post-traitement chimique
METHOD FOR PRODUCING THERMOPLASTIC RESIN COMPOSITION, METHOD FOR DETERMINING MOLDABILITY OF THERMOPLASTIC RESIN COMPOSITION, AND THERMOPLASTIC RESIN COMPOSITION FOR MOLDING AT TEMPERATURE THAT IS NOT LESS THAN DECOMPOSITION TEMPERATURE OF ELASTOMER
Provided are a resin composition that is colored black and has high laser light transmissivity, and a molded article and a composite molded article using the resin composition. The resin composition is a laser light-transmitting resin composition including a polybutylene terephthalate resin, a polycarbonate resin, and a chromium complex azo dye, in which the content of the polycarbonate resin is 60-100 parts by mass with respect to 100 parts by mass of the polybutylene terephthalate resin, and the content of the chromium complex azo dye is 0.08-0.50 parts by mass with respect to 100 parts by mass of the polybutylene terephthalate resin.
Provided is a method of manufacturing a polyacetal copolymer including: a step of copolymerizing 100 parts by mass of trioxane (A), 0.05 to 5 parts by mass of a cyclic acetal compound (B), and 0.001 to 1 parts by mass of an aliphatic glycidyl ether compound (C) having a chlorine content of 1 to 500 mass ppm, in the presence of a linear formal compound (D) as a molecular weight regulator, in which in the step, when a total mass (g) of the trioxane (A), the compound (B), and the compound (C) is “a”, a molar number of the linear formal compound (D) is “b”, and total molar numbers of water and methanol contained in the trioxane (A), the compound (B), and the compound (C) are respectively “c” and “d”, setting is performed to satisfy (b+c+d)/a=1.5 to 7 μmol/g.
A polyacetal resin composition that allows molded articles to be inhibited from being deteriorated by contact with acidic detergents, and in which the portions that have contacted the detergents are inhibited from being deteriorated by light. The polyacetal resin composition includes 100 parts by mass of a polyacetal polymer, 0.1-2.0 parts by mass of a hindered-phenol-based antioxidant, 2.0-20 parts, excluding 2.0 parts, by mass of at least one of magnesium oxide and zinc oxide,0.5-3.0 parts by mass of a polyalkylene glycol, 0.2-1.5 parts by mass of a hindered amine compound, and 0.2-1.5 parts by mass of an ultraviolet absorber.
This molding failure prediction method comprises: a step (S1) for creating a flow analysis model in which an injection molding article is divided into a plurality of elements; a step (S2) for obtaining the temperature and pressure of each of the elements; a step (S3) for calculating a temperature distribution and a pressure distribution; a step (S4) for using linear expansion coefficient data, elastic modulus temperature dependent data, and PVT data and calculating an elastic modulus distribution, a volume contraction rate distribution, and a temperature load; a step (S5) for calculating a first strain generated in each element of a first structural analysis model through structural analysis; and a step (S6) for predicting a produced spot of a shrinkage and/or the amount of shrinkage by calculating a deformation amount of the first structural analysis model.
G06F 30/23 - Optimisation, vérification ou simulation de l’objet conçu utilisant les méthodes des éléments finis [MEF] ou les méthodes à différences finies [MDF]
G06F 30/28 - Optimisation, vérification ou simulation de l’objet conçu utilisant la dynamique des fluides, p. ex. les équations de Navier-Stokes ou la dynamique des fluides numérique [DFN]
According to the present invention, a flow analysis method for injection molding using a thermoplastic resin comprises: a step for creating a flow analysis model obtained by dividing an injection molded article into a plurality of elements; a step for setting molding conditions for injection molding; and a step for acquiring, as a gate sealing time, the time, in a flow analysis using the molding conditions, from when injection has started to when the temperature of the central part of a gate in the flow analysis model has reached a flow-stop temperature.
A production method for a cyclic olefin copolymer, which is capable of efficiently producing a cyclic olefin copolymer by copolymerizing monomers including a norbornene monomer and ethylene while suppressing the formation of a polyethylene-like impurity and an excessive increase in molecular weight. In the polymerization of monomers including a norbornene monomer and ethylene in the presence of a metallocene catalyst, the metallocene catalyst having a ligand including a cyclopentadiene ring and a structure in which a heteroatom being N, O, S or P is bonded to a transition metal of Group IV of the periodic table and an sp2 carbon, and an alkylmetal compound are used in combination.
This method for preparing a catalyst composition includes adding either an alkyl ammonium compound (C1) or both an alkyl ammonium compound (C1) and an organic boron compound (C2) when a phosphine imide catalyst (B), in which a tertiary alkyl group is bonded to the phosphorus atom of a phosphine imide group, is dissolved in at least one of an organic solvent (A1) composed of a compound that is made of only carbon atoms and hydrogen atoms and that contains no aromatic groups in the molecular structure, and an organic solvent (A2) composed of a compound that is made of only carbon atoms, hydrogen atoms, and halogen atoms and that contains no aromatic groups in the molecular structure.
C08F 4/6592 - Composant couvert par le groupe contenant une liaison métal de transition-carbone contenant au moins un cycle cyclopentadiényle, condensé ou non, p. ex. un cycle indényle ou fluorényle
80.
WHOLLY AROMATIC POLYESTER, RESIN COMPOSITION, AND MOLDED ARTICLE, AND METHOD FOR PRODUCING WHOLLY AROMATIC POLYESTER
Provided is a liquid-crystalline wholly aromatic polyester that exhibits a lower flow initiation temperature than heretofore. The wholly aromatic polyester exhibits optical anisotropy when melted and contains constituent units (I), (II), (III), and (IV) as essential constituent components, wherein the content of the constituent unit (I) is 17.5 to 26 mol% with respect to the total constituent units, the content of the constituent unit (II) is 24 to 32.5 mol% with respect to the total constituent units, the content of the constituent unit (III) is 17.5 to 26 mol% with respect to the total constituent units, the content of the constituent unit (IV) is 24 to 32.5 mol% with respect to the total constituent units, and the content of the total of the constituent units (I), (II), (III), and (IV) with respect to the total constituent units is 100 mol%.
The present invention provides a method which is for producing a liquid crystal resin and from which a liquid crystal resin with a low amount of bonding of ketone can be obtained. This method for producing a liquid crystal resin, through the reaction of raw monomers containing at least one selected from the group consisting of an aromatic hydroxycarboxylic acid and a polymerizable derivative thereof, comprises conducting a polycondensation reaction of the raw monomers in the presence of at least one onium salt having at least one phosphorus atom. The method may further comprise acylating the raw monomers in the presence of at least one onium salt having one or more phosphorus atoms before conducting the polycondensation reaction.
The purpose of the present invention is to provide a method for producing a polyacetal copolymer, wherein molded products made of the polyacetal copolymer have good appearance and there is less variation between the products. The purpose of the present invention has been achieved by a method for producing a polyacetal copolymer, the method comprising at least the following steps in this order: (A) a step in which a main monomer (a) that is a trioxane, a comonomer (b) that is at least one selected from a cyclic formal and a cyclic ether and having at least one carbon-carbon bond, a protonic acid polymerization initiator (c), and optionally a molecular weight modifier (d1) are added and a polyacetal copolymer is polymerized with a polymerizer; (B) a step in which the polyacetal copolymer obtained in step (A) is removed from the polymerizer and the liquid molecular weight modifier (d2) having a boiling point of lower than 200°C is added to adjust the molecular weight of the polyacetal copolymer; and (C) a step for deactivating the polymerization initiator (c) following the step for adjusting the molecular weight.
The purpose of the present invention is to provide a polyacetal copolymer and a method for polymerizing same, the polyacetal copolymer having excellent production stability and thermal stability, such as in terms of formaldehyde generation amount, while maintaining the level of physical properties such as creep properties. The purpose of the present invention was achieved by: a polyacetal copolymer obtained by copolymerizing a trioxane, a cyclic acetal compound having a C2 or higher oxyalkylene group in the ring, and an epoxy compound having one epoxy group per molecule and consisting of hydrocarbon other than the epoxy group; and a polyacetal copolymer polymerization method in which a trioxane, a cyclic acetal compound having a C2 or higher oxyalkylene group in the ring, and an epoxy compound having one epoxy group per molecule and consisting of hydrocarbon other than the epoxy group are copolymerized in the presence of a cationic polymerization catalyst.
C08G 2/22 - Copolymérisation d'aldéhydes ou de cétones avec des composés époxydés
84.
THERMOPLASTIC RESIN COMPOSITION AND MEMBER, AND METHOD OF MANUFACTURING MEMBER FORMED FROM THERMOPLASTIC RESIN COMPOSITION AND METHOD OF ENHANCING MECHANICAL STRENGTH
Provided is a thermoplastic resin composition obtained by melt-kneading at least 0.1 to 0.5 parts by mass of a carbon nanostructure relative to 100 parts by mass of a thermoplastic resin; a member formed by molding the thermoplastic resin composition; a method of manufacturing a member including steps of preparing the thermoplastic resin composition, and molding the thermoplastic resin composition into a predetermined shape; and a method of enhancing mechanical strength of a member formed from a thermoplastic resin composition by using a resin composition obtained by melt-kneading 0.1 to 0.5 parts by mass of a carbon nanostructure relative to 100 parts by mass of a thermoplastic resin.
C08L 29/14 - Homopolymères ou copolymères d'acétals ou de cétals obtenus par polymérisation d'acétals ou de cétals non saturés ou par post-traitement des polymères d'alcools non saturés
B29C 48/40 - Moyens pour plastifier ou homogénéiser la matière à mouler ou pour la forcer dans la filière ou la matrice utilisant des vis entourées par un fourreau coopérant, p. ex. des extrudeuses à vis simple utilisant au moins deux vis parallèles, p. ex. extrudeuses à vis doubles
B29C 48/00 - Moulage par extrusion, c.-à-d. en exprimant la matière à mouler dans une matrice ou une filière qui lui donne la forme désiréeAppareils à cet effet
B29C 45/00 - Moulage par injection, c.-à-d. en forçant un volume déterminé de matière à mouler par une buse d'injection dans un moule ferméAppareils à cet effet
85.
CYCLIC OLEFIN COPOLYMER, AND METHOD FOR MANUFACTURING CYCLIC OLEFIN COPOLYMER
To provide: a cyclic olefin copolymer, being a copolymer of a cyclic olefin monomer and α-olefin having a carbon number of 3 to 20, with outstanding tensile strength and fracture strain; and a method for manufacturing the cyclic olefin copolymer which can favorably manufacture said cyclic olefin copolymer. The copolymer of a cyclic olefin monomer and α-olefin having a carbon number of 3 to 20, wherein the amount of α-olefin-derived structural units is 10 mol% to 50 mol% with respect to the total structural units, and a value in which the half value width of the primary peak is divided by a value q of the peak top is in the range of 0.15 to 0.45 on a primary scattering curve for a scattering vector q in small-angle X-ray scattering in the cyclic olefin copolymer.
C08F 232/00 - Copolymères de composés cycliques ne contenant pas de radicaux aliphatiques non saturés dans une chaîne latérale et contenant une ou plusieurs liaisons doubles carbone-carbone dans un système carbocyclique
C08F 4/6592 - Composant couvert par le groupe contenant une liaison métal de transition-carbone contenant au moins un cycle cyclopentadiényle, condensé ou non, p. ex. un cycle indényle ou fluorényle
C08F 210/00 - Copolymères d'hydrocarbures aliphatiques non saturés contenant une seule liaison double carbone-carbone
86.
CYCLIC OLEFIN COPOLYMER AND PRODUCTION METHOD OF CYCLIC OLEFIN COPOLYMER
1ρ1ρ by solid NMR measurement for the cyclic olefin copolymer is within the range of 4.5-5.5 msec, and the difference between the maximum value and the minimum value of the relaxation times is within the range of 1.0-3.0 msec.
C08F 232/00 - Copolymères de composés cycliques ne contenant pas de radicaux aliphatiques non saturés dans une chaîne latérale et contenant une ou plusieurs liaisons doubles carbone-carbone dans un système carbocyclique
C08F 4/6592 - Composant couvert par le groupe contenant une liaison métal de transition-carbone contenant au moins un cycle cyclopentadiényle, condensé ou non, p. ex. un cycle indényle ou fluorényle
C08F 210/00 - Copolymères d'hydrocarbures aliphatiques non saturés contenant une seule liaison double carbone-carbone
87.
LIQUID CRYSTALLINE RESIN COMPOSITION FOR PLANAR CONNECTOR, AND PLANAR CONNECTOR OBTAINED USING SAME
C08L 67/03 - Les acides dicarboxyliques et les composés dihydroxylés ayant les groupes hydroxy et carboxyliques liés directement à des cycles aromatiques
C08G 63/60 - Polyesters dérivés soit d'acides hydroxycarboxyliques, soit d'acides polycarboxyliques et de composés polyhydroxylés dérivés de la réaction d'un mélange d'acides hydroxycarboxyliques, d'acides polycarboxyliques et de composés polyhydroxylés
C08L 67/03 - Les acides dicarboxyliques et les composés dihydroxylés ayant les groupes hydroxy et carboxyliques liés directement à des cycles aromatiques
C08G 63/60 - Polyesters dérivés soit d'acides hydroxycarboxyliques, soit d'acides polycarboxyliques et de composés polyhydroxylés dérivés de la réaction d'un mélange d'acides hydroxycarboxyliques, d'acides polycarboxyliques et de composés polyhydroxylés
Provided are: a polyarylene sulfide resin composition suitable for laser welding; and a method for producing the polyarylene sulfide resin composition. Also provided is a method for improving the laser beam transmittance of a molded article comprising a polyarylene sulfide resin. The resin composition for laser welding comprises: 100 parts by mass of a polyarylene sulfide resin; and 0.03 part by mass to 1.05 parts by mass inclusive of a laser beam transmittance improving agent comprising at least one component selected from the group consisting of potassium hydroxide, sodium hydroxide, sodium acetate, calcium hydroxide, potassium acetate, lithium hydroxide, lithium acetate, zinc hydroxide, zinc acetate, magnesium hydroxide, zinc oxide, zinc carbonate and basic zinc carbonate.
B29B 7/46 - MélangeMalaxage continu, avec dispositifs mécaniques de mélange ou de malaxage avec dispositifs de mélange ou de malaxage mobiles rotatifs avec plus d'un arbre
B29B 9/06 - Fabrication de granulés par division de matière préformée sous forme de filaments, p. ex. combinée avec l'extrusion
C08K 3/01 - Emploi de substances inorganiques en tant qu'adjuvants caractérisées par leur fonction
C08K 5/5415 - Composés contenant du silicium contenant de l'oxygène contenant au moins une liaison Si—O
90.
RESIN COMPOSITION FOR LASER LIGHT TRANSMISSION-SIDE MOLDED ARTICLE, AND MOLDED ARTICLE THEREOF
Provided are: a resin composition suitable for producing a laser light transmission-side molded article; and a laser light transmission-side molded article. Also provided is a method for improving the laser light transmittance of a molded article of a resin composition. This resin composition for a laser light transmission-side molded article contains 100 parts by mass of a poly(alkylene terephthalate) resin (A), 10-100 parts by mass of a polycarbonate resin (B), 0.1-3 parts by mass of a carbodiimide compound (C), 0-100 parts by mass of an inorganic filler (D), and an inorganic phosphorus compound (E). In this method for improving the laser light transmittance of a molded article of a resin composition, 0.1-3 parts by mass of carbodiimide compound (C) is blended with a resin composition containing: 100 parts by mass of poly(alkylene terephthalate) resin (A); 10-100 parts by mass of polycarbonate resin (B); 0-100 parts by mass of inorganic filler (D); and inorganic phosphorus compound (E).
This method for producing a polyacetal polymer includes: a step (A) for homopolymerizing trioxane; or a step (B) for copolymerizing a primary monomer, which is trioxane, and a comonomer, which is a compound copolymerizable with the trioxane. In said steps, a compound represented by general formula (1) is used as a polymerization catalyst. (In general formula (1), R represents an aliphatic hydrocarbon group or an aromatic hydrocarbon group that is optionally substituted; m and n each independently represent an integer between 0 and 10; and x represents an integer between 1 and 3.)
Provided is a method for producing a polyacetal polymer, said method comprising (A) a step for polymerizing trioxane alone, or (B) a step for copolymerizing trioxane as the main monomer and a compound that can copolymerize with trioxane as a co-monomer. In said steps, a compound represented by structure (X) and/or a compound represented by structure (Y) is used as a polymerization catalyst. [In structure (X) and structure (Y), l, m, and n each independently represent an integer of 0-10.]
Provided is a wholly aromatic ether ketone resin composition comprising (A) a wholly aromatic ether ketone resin and (B) phosphorus-based stabilizers, (B) the phosphorus-based stabilizers including (B1) a dihydrogenphosphate and (B2) a hydrogenphosphate, (B1) the dihydrogenphosphate including one or more dihydrogenphosphates of an alkali metal or one or more dihydrogenphosphates of an alkali-earth metal or the like, (B2) the hydrogenphosphate including one or more hydrogenphosphates of an alkali metal or one or more hydrogenphosphates of an alkali-earth metal or the like, wherein (B1) the dihydrogenphosphate and (B2) the hydrogenphosphate are contained in a prescribed combination, and the total amount of (B) the phosphorus-based stabilizers is 100-5,000 ppm by mass.
The present invention pertains to a production method for a cyclic olefin copolymer that contains a structural unit derived from a norbornene monomer and a structural unit derived from ethylene, the method at least comprising: a step for charging the norbornene monomer and ethylene as monomers into a polymerization vessel; and a step for polymerizing the monomers in the polymerization vessel in the presence of a catalyst having a phosphine imide group, wherein the catalyst having a phosphine imide group comprises a compound having a specific structure.
C08F 232/04 - Copolymères de composés cycliques ne contenant pas de radicaux aliphatiques non saturés dans une chaîne latérale et contenant une ou plusieurs liaisons doubles carbone-carbone dans un système carbocyclique ne contenant pas de cycles condensés contenant une seule double liaison carbone-carbone
C08F 4/6592 - Composant couvert par le groupe contenant une liaison métal de transition-carbone contenant au moins un cycle cyclopentadiényle, condensé ou non, p. ex. un cycle indényle ou fluorényle
A cycloolefin copolymer comprising constituent units derived from a norbornene monomer and constituent units derived from ethylene, wherein the constituent units derived from a norbornene monomer comprise meso diads and racemo diads and triads, the ratio of the content (mol%) of the meso diads to the content (mol%) of the racemo diads being 0.10-3.00 and the content of the triads being 2.5 mol% or less; a resin composition including the cycloolefin copolymer; and a film- or sheet-shaped article obtained by shaping the cycloolefin copolymer or the resin composition.
C08F 232/04 - Copolymères de composés cycliques ne contenant pas de radicaux aliphatiques non saturés dans une chaîne latérale et contenant une ou plusieurs liaisons doubles carbone-carbone dans un système carbocyclique ne contenant pas de cycles condensés contenant une seule double liaison carbone-carbone
C08F 4/6592 - Composant couvert par le groupe contenant une liaison métal de transition-carbone contenant au moins un cycle cyclopentadiényle, condensé ou non, p. ex. un cycle indényle ou fluorényle
C08L 45/00 - Compositions contenant des homopolymères ou des copolymères de composés ne possédant pas de radicaux aliphatiques non saturés dans une chaîne latérale et contenant une ou plusieurs liaisons doubles carbone-carbone dans un système carbocyclique ou hétérocycliqueCompositions contenant des dérivés de tels polymères
This method is for producing a cyclic olefin copolymer containing constituent units derived from a norbornene monomer and constituent units derived from ethylene, the method including at least: a charging step for charging hydrogen and monomers including a norbornene monomer and ethylene in a polymerization vessel; and a polymerization step for polymerizing the monomers in the polymerization vessel in the presence of hydrogen and a catalyst having a phosphine imide group. The molecular weight of a cyclic olefin copolymer produced in the polymerization step is controlled by adjusting the concentration of hydrogen charged into the polymerization vessel.
C08F 232/04 - Copolymères de composés cycliques ne contenant pas de radicaux aliphatiques non saturés dans une chaîne latérale et contenant une ou plusieurs liaisons doubles carbone-carbone dans un système carbocyclique ne contenant pas de cycles condensés contenant une seule double liaison carbone-carbone
C08F 4/6592 - Composant couvert par le groupe contenant une liaison métal de transition-carbone contenant au moins un cycle cyclopentadiényle, condensé ou non, p. ex. un cycle indényle ou fluorényle
A production method for a cyclic olefin copolymer which is capable of efficiently producing a cyclic olefin copolymer by copolymerizing monomers including a norbornene monomer and ethylene while suppressing the formation of a polyethylene-like impurity, and a catalyst composition for the copolymerization of a norbornene monomer and ethylene. Monomers including a norbornene monomer and ethylene are polymerized in the presence of a metal-containing catalyst, and the metal-containing catalyst has a structure in which a nitrogen atom is bonded to a transition metal of Group 4 of the periodic table and an atom of Group 15 of the periodic table.
C08F 4/64 - Titane, zirconium, hafnium ou leurs composés
C08F 4/76 - MétauxHydrures métalliquesComposés organiques de métalLeur utilisation comme précurseurs de catalyseurs choisis parmi les métaux non prévus dans le groupe choisis parmi les métaux réfractaires choisis parmi le titane, le zirconium, le hafnium, le vanadium, le niobium ou le tantale
C08F 232/04 - Copolymères de composés cycliques ne contenant pas de radicaux aliphatiques non saturés dans une chaîne latérale et contenant une ou plusieurs liaisons doubles carbone-carbone dans un système carbocyclique ne contenant pas de cycles condensés contenant une seule double liaison carbone-carbone
C08F 4/08 - Composés métalliques autres que les hydrures et autres que les composés organiques de métalComplexes d'halogénures de bore ou d'halogénures d'aluminium avec des composés organiques contenant de l'oxygène de métaux alcalins
C08F 232/06 - Copolymères de composés cycliques ne contenant pas de radicaux aliphatiques non saturés dans une chaîne latérale et contenant une ou plusieurs liaisons doubles carbone-carbone dans un système carbocyclique ne contenant pas de cycles condensés contenant plusieurs doubles liaisons carbone-carbone
C08F 4/6592 - Composant couvert par le groupe contenant une liaison métal de transition-carbone contenant au moins un cycle cyclopentadiényle, condensé ou non, p. ex. un cycle indényle ou fluorényle
98.
POLYACETAL RESIN COMPOSITION USED IN APPLICATIONS FOR PERFORMING RADIATION STERILIZATION, AND METHOD FOR IMPROVING RADIATION RESISTANCE IN POLYACETAL RESIN
The purpose of the present invention is to provide: a novel polyacetal resin composition used in applications for performing radiation sterilization; and a method for improving radiation resistance in a polyacetal resin. This polyacetal resin composition contains a hindered amine compound, wherein the hindered amine compound is at least one compound selected from (A) a hindered amine compound which has a molecular weight of 1000 or less and (B) a hindered amine polymer which is a polymer of a monomer having a pendant hindered amine skeleton and a molecular weight exceeding 1000, and which has the hindered amine skeleton at a terminal.
C08L 79/04 - Polycondensats possédant des hétérocycles contenant de l'azote dans la chaîne principalePolyhydrazidesPolyamide-acides ou précurseurs similaires de polyimides
99.
POLYALKYLENE TEREPHTHALATE RESIN COMPOSITION, POLYALKYLENE TEREPHTHALATE RESIN COMPOSITION PRODUCTION METHOD, AND MOLDED ARTICLE
The present disclosure pertains to a polyalkylene terephthalate resin composition that contains 100 parts by mass of a polyalkylene terephthalate resin (A) and 0.10-10 parts by mass of an epoxy compound (B) that satisfies formula (1). In the formula (1), M represents the number of epoxy groups per one molecule of the epoxy compound (B), and N represents the number of hydroxyl groups per one molecule of the epoxy compound (B). Formula (1): (M×2)+N≤6
Provided are: a powdery material for 3D printers which is capable of producing three-dimensional shaped objects having an excellent appearance and having a high density and high strength; a three-dimensional shaped object obtained from the powdery material; and a method for producing the three-dimensional shaped object. The powdery material (X) for 3D printers includes a powder (I) of a polyacetal copolymer resin, wherein the proportion of comonomer units in all the constituent units (100 mass%) of the polyacetal copolymer resin is 1.0-6.0 mass% and the powder (I) has an average particle diameter of 30-70 μm and has a melt flow rate, as measured at 190°C under a load of 2.16 kg, of 1.0-8.0 g/10 min.
B33Y 80/00 - Produits obtenus par fabrication additive
B29C 64/153 - Procédés de fabrication additive n’utilisant que des matériaux solides utilisant des couches de poudre avec jonction sélective, p. ex. par frittage ou fusion laser sélectif
B33Y 70/00 - Matériaux spécialement adaptés à la fabrication additive
