Abstract

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.

IPC Classes  ?

• C08F 232/08 - Copolymers of cyclic compounds containing no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system having condensed rings
• C08F 4/659 - Component covered by group containing a transition metal-carbon bond
• C08F 4/6592 - Component covered by group containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring
• C08F 210/14 - Monomers containing five or more carbon atoms

Abstract

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.

IPC Classes  ?

• C08K 3/013 - Fillers, pigments or reinforcing additives
• B23K 26/70 - Auxiliary operations or equipment
• B23K 103/16 - Composite materials
• B29C 48/68 - Barrels or cylinders
• B29K 81/00 - Use of polymers having sulfur, with or without nitrogen, oxygen or carbon only, in the main chain, as moulding material
• B29K 505/00 - Use of metals, their alloys or their compounds, as filler
• B29K 509/08 - Glass
• C08K 5/098 - Metal salts of carboxylic acids
• C08K 7/14 - Glass

Abstract

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.

IPC Classes  ?

• C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
• C08K 3/04 - Carbon
• C08K 3/40 - Glass
• C08K 5/49 - Phosphorus-containing compounds
• C08L 69/00 - Compositions of polycarbonatesCompositions of derivatives of polycarbonates

Abstract

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.

IPC Classes  ?

• C08L 101/12 - Compositions of unspecified macromolecular compounds characterised by physical features, e.g. anisotropy, viscosity or electrical conductivity
• C08K 3/30 - Sulfur-, selenium-, or tellurium-containing compounds
• C08K 3/34 - Silicon-containing compounds
• C08K 3/36 - Silica
• C08K 7/00 - Use of ingredients characterised by shape
• C08L 23/08 - Copolymers of ethene
• C08L 67/04 - Polyesters derived from hydroxy carboxylic acids, e.g. lactones
• C08L 77/12 - Polyester-amides
• G03B 30/00 - Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles

Abstract

112133 each independently represent a phenylene group or the like, and Y and Z each independently represent an oxygen atom or an imino group.

IPC Classes  ?

• C08G 63/60 - Polyesters derived from hydroxy carboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from the reaction of a mixture of hydroxy carboxylic acids, polycarboxylic acids and polyhydroxy compounds

Abstract

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.

IPC Classes  ?

• C08L 101/12 - Compositions of unspecified macromolecular compounds characterised by physical features, e.g. anisotropy, viscosity or electrical conductivity
• C08K 3/013 - Fillers, pigments or reinforcing additives
• C08L 23/26 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bondCompositions of derivatives of such polymers modified by chemical after-treatment
• C08L 67/03 - Polyesters derived from dicarboxylic acids and dihydroxy compounds the dicarboxylic acids and dihydroxy compounds having the hydroxy and the carboxyl groups directly linked to aromatic rings
• C08L 77/12 - Polyester-amides
• H04N 23/57 - Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices

Abstract

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.

IPC Classes  ?

• C08F 232/00 - Copolymers of cyclic compounds containing no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system
• C08F 4/6592 - Component covered by group containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring

Abstract

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.

IPC Classes  ?

• C08L 71/10 - Polyethers derived from hydroxy compounds or from their metallic derivatives from phenols
• C08K 3/04 - Carbon
• C08K 3/013 - Fillers, pigments or reinforcing additives
• C08K 3/38 - Boron-containing compounds
• C08K 7/06 - Elements

Abstract

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).

IPC Classes  ?

• C08L 67/06 - Unsaturated polyesters
• B23K 26/70 - Auxiliary operations or equipment
• B23K 103/16 - Composite materials
• C08K 3/32 - Phosphorus-containing compounds
• C08K 5/29 - Compounds containing carbon-to-nitrogen double bonds
• C08K 7/14 - Glass

Abstract

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.

IPC Classes  ?

• C08F 232/04 - Copolymers of cyclic compounds containing no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system having no condensed rings having one carbon-to-carbon double bond
• C08F 4/659 - Component covered by group containing a transition metal-carbon bond
• C08F 4/6592 - Component covered by group containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring
• C08F 210/14 - Monomers containing five or more carbon atoms

Abstract

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.

IPC Classes  ?

• C08L 71/10 - Polyethers derived from hydroxy compounds or from their metallic derivatives from phenols
• C08K 3/04 - Carbon
• C08K 3/013 - Fillers, pigments or reinforcing additives
• C08K 7/06 - Elements
• C08L 27/18 - Homopolymers or copolymers of tetrafluoroethene

Abstract

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.

IPC Classes  ?

• C08K 3/32 - Phosphorus-containing compounds

Goods & 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.

Abstract

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).

IPC Classes  ?

• C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
• C08K 5/29 - Compounds containing carbon-to-nitrogen double bonds

Abstract

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.

IPC Classes  ?

• C08F 232/00 - Copolymers of cyclic compounds containing no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system

Abstract

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.

IPC Classes  ?

• C08F 232/00 - Copolymers of cyclic compounds containing no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system
• C08F 4/6592 - Component covered by group containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring
• C08F 210/00 - Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond

Abstract

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

IPC Classes  ?

• C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
• C08K 5/29 - Compounds containing carbon-to-nitrogen double bonds
• C08K 5/053 - Polyhydroxylic alcohols
• C08K 5/103 - EstersEther-esters of monocarboxylic acids with polyalcohols

Goods & 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.

Abstract

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).

IPC Classes  ?

• B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
• B29C 64/314 - Preparation
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 70/00 - Materials specially adapted for additive manufacturing
• B33Y 80/00 - Products made by additive manufacturing
• C08K 3/013 - Fillers, pigments or reinforcing additives
• C08K 3/20 - OxidesHydroxides
• C08K 9/00 - Use of pretreated ingredients
• C08L 59/04 - Copolyoxymethylenes

Goods & 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

Goods & 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

Abstract

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.

IPC Classes  ?

• C09D 5/03 - Powdery paints
• B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
• B29K 59/00 - Use of polyacetals as moulding material
• B29K 71/00 - Use of polyethers as moulding material
• B29K 105/00 - Condition, form or state of moulded material
• B29K 509/02 - Ceramics
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 70/00 - Materials specially adapted for additive manufacturing
• C08G 65/16 - Cyclic ethers having four or more ring atoms
• C09D 159/04 - Copolyoxymethylenes

Abstract

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.

IPC Classes  ?

• C08K 7/06 - Elements
• C08F 110/06 - Propene
• C08K 3/04 - Carbon
• C08L 23/12 - Polypropene
• H01Q 17/00 - Devices for absorbing waves radiated from an antenna Combinations of such devices with active antenna elements or systems
• H05K 9/00 - Screening of apparatus or components against electric or magnetic fields

Abstract

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.

IPC Classes  ?

• D06M 13/144 - AlcoholsMetal alcoholates
• D06B 3/06 - Passing of textile materials through liquids, gases, or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of yarns, threads, or filaments individually handled
• D06M 11/82 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with boron or compounds thereof, e.g. borides with boron oxidesTreating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with boron or compounds thereof, e.g. borides with boric, meta- or perboric acids or their salts, e.g. with borax
• D06M 101/06 - Vegetal fibres cellulosic

Abstract

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)).

IPC Classes  ?

• C08B 15/00 - Preparation of other cellulose derivatives or modified cellulose

Abstract

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.

IPC Classes  ?

• C08L 1/02 - CelluloseModified cellulose
• C08J 3/215 - Compounding polymers with additives, e.g. colouring in the presence of a liquid phase the polymer being premixed with a liquid phase at least one additive being also premixed with a liquid phase
• C08K 3/38 - Boron-containing compounds
• C08K 5/053 - Polyhydroxylic alcohols
• C08L 101/00 - Compositions of unspecified macromolecular compounds
• D06M 11/82 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with boron or compounds thereof, e.g. borides with boron oxidesTreating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with boron or compounds thereof, e.g. borides with boric, meta- or perboric acids or their salts, e.g. with borax
• D06M 13/144 - AlcoholsMetal alcoholates

Abstract

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.

IPC Classes  ?

• B29C 45/14 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
• B23K 26/352 - Working by laser beam, e.g. welding, cutting or boring for surface treatment
• C08L 23/02 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bondCompositions of derivatives of such polymers not modified by chemical after-treatment
• C08L 81/02 - PolythioethersPolythioether-ethers

Abstract

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.

IPC Classes  ?

• B29C 65/00 - Joining of preformed partsApparatus therefor
• B29C 65/16 - Laser beam
• B29K 67/00 - Use of polyesters as moulding material
• B29K 105/00 - Condition, form or state of moulded material

Abstract

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.

IPC Classes  ?

• C08K 3/32 - Phosphorus-containing compounds
• C08J 3/20 - Compounding polymers with additives, e.g. colouring
• C08K 3/30 - Sulfur-, selenium-, or tellurium-containing compounds

Abstract

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.

IPC Classes  ?

• B29C 45/78 - Measuring, controlling or regulating of temperature

Abstract

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%.

IPC Classes  ?

• C08L 67/00 - Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chainCompositions of derivatives of such polymers
• C08K 3/34 - Silicon-containing compounds
• C08K 13/04 - Ingredients characterised by their shape and organic or inorganic ingredients
• C08L 23/00 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bondCompositions of derivatives of such polymers
• C08L 77/12 - Polyester-amides
• G02B 7/02 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses

Abstract

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).

IPC Classes  ?

• C08J 3/12 - Powdering or granulating
• C08J 11/06 - Recovery or working-up of waste materials of polymers without chemical reactions
• C08L 23/00 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bondCompositions of derivatives of such polymers
• C08L 81/02 - PolythioethersPolythioether-ethers
• C08L 83/04 - Polysiloxanes

Abstract

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.

IPC Classes  ?

• C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
• C08J 3/20 - Compounding polymers with additives, e.g. colouring
• C08K 7/14 - Glass
• C08K 9/04 - Ingredients treated with organic substances
• C08L 101/00 - Compositions of unspecified macromolecular compounds

Abstract

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.

IPC Classes  ?

• C08L 101/12 - Compositions of unspecified macromolecular compounds characterised by physical features, e.g. anisotropy, viscosity or electrical conductivity
• C08K 3/04 - Carbon
• C08K 7/24 - Expanded, porous or hollow particles inorganic
• C08L 67/04 - Polyesters derived from hydroxy carboxylic acids, e.g. lactones

Abstract

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.

IPC Classes  ?

• C08L 81/02 - PolythioethersPolythioether-ethers
• C08J 3/20 - Compounding polymers with additives, e.g. colouring
• C08L 23/00 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bondCompositions of derivatives of such polymers
• C08L 83/04 - Polysiloxanes

Goods & 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.

Abstract

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.

IPC Classes  ?

• C08G 2/10 - Polymerisation of cyclic oligomers of formaldehyde
• C08G 2/06 - Catalysts

Abstract

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.

IPC Classes  ?

• C08G 2/10 - Polymerisation of cyclic oligomers of formaldehyde
• C08G 2/06 - Catalysts

Abstract

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.

IPC Classes  ?

• C08F 4/6592 - Component covered by group containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring
• C08F 232/00 - Copolymers of cyclic compounds containing no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system

Abstract

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.

IPC Classes  ?

• C08F 4/6592 - Component covered by group containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring
• C08F 232/00 - Copolymers of cyclic compounds containing no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system

Abstract

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.

IPC Classes  ?

• C08L 23/12 - Polypropene
• C08J 5/06 - Reinforcing macromolecular compounds with loose or coherent fibrous material using pretreated fibrous materials
• C08L 1/00 - Compositions of cellulose, modified cellulose, or cellulose derivatives
• C08L 23/26 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bondCompositions of derivatives of such polymers modified by chemical after-treatment
• C08L 63/00 - Compositions of epoxy resinsCompositions of derivatives of epoxy resins

Abstract

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.

IPC Classes  ?

• C08L 67/00 - Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chainCompositions of derivatives of such polymers
• C08G 63/60 - Polyesters derived from hydroxy carboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from the reaction of a mixture of hydroxy carboxylic acids, polycarboxylic acids and polyhydroxy compounds
• C08K 5/103 - EstersEther-esters of monocarboxylic acids with polyalcohols
• C08K 7/02 - Fibres or whiskers
• C08L 23/08 - Copolymers of ethene

Abstract

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.

IPC Classes  ?

• C08G 2/28 - Post-polymerisation treatments

Abstract

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.

IPC Classes  ?

• B29C 45/76 - Measuring, controlling or regulating
• B29C 45/17 - Component parts, details or accessoriesAuxiliary operations

Abstract

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%.

IPC Classes  ?

• C08L 101/12 - Compositions of unspecified macromolecular compounds characterised by physical features, e.g. anisotropy, viscosity or electrical conductivity
• C08K 3/013 - Fillers, pigments or reinforcing additives
• C08K 3/30 - Sulfur-, selenium-, or tellurium-containing compounds
• C08K 3/36 - Silica
• C08K 7/00 - Use of ingredients characterised by shape
• C08L 63/00 - Compositions of epoxy resinsCompositions of derivatives of epoxy resins
• C08L 67/04 - Polyesters derived from hydroxy carboxylic acids, e.g. lactones
• C08L 77/12 - Polyester-amides
• G02B 7/02 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses

Abstract

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.

IPC Classes  ?

• C08G 2/10 - Polymerisation of cyclic oligomers of formaldehyde

Abstract

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.

IPC Classes  ?

• C08G 2/06 - Catalysts
• C08G 2/10 - Polymerisation of cyclic oligomers of formaldehyde

Abstract

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.

IPC Classes  ?

• C08G 2/06 - Catalysts
• C08G 2/10 - Polymerisation of cyclic oligomers of formaldehyde

Abstract

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).

IPC Classes  ?

• B23K 26/352 - Working by laser beam, e.g. welding, cutting or boring for surface treatment
• B29C 65/70 - Joining of preformed partsApparatus therefor by moulding

Abstract

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.

IPC Classes  ?

• C08F 232/00 - Copolymers of cyclic compounds containing no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system
• C08F 4/6592 - Component covered by group containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring
• C08F 210/02 - Ethene

Abstract

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.

IPC Classes  ?

• B29C 45/76 - Measuring, controlling or regulating

Abstract

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%.

IPC Classes  ?

• B29C 64/118 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
• B29C 64/321 - Feeding
• B29C 64/343 - Metering
• B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
• B33Y 70/00 - Materials specially adapted for additive manufacturing
• B33Y 70/10 - Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials
• B33Y 80/00 - Products made by additive manufacturing

Abstract

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.

IPC Classes  ?

• B29C 64/314 - Preparation
• B29C 64/118 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
• B29C 64/245 - Platforms or substrates
• B29C 64/295 - Heating elements
• B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 70/00 - Materials specially adapted for additive manufacturing
• B33Y 70/10 - Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials
• B33Y 80/00 - Products made by additive manufacturing
• C08K 3/013 - Fillers, pigments or reinforcing additives
• C08K 5/00 - Use of organic ingredients
• C08L 59/04 - Copolyoxymethylenes
• B29K 59/00 - Use of polyacetals as moulding material
• B29K 105/16 - Fillers
• B29K 509/00 - Use of inorganic materials not provided for in groups , as filler

Abstract

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.

IPC Classes  ?

• G01N 23/046 - Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups , or by transmitting the radiation through the material and forming images of the material using tomography, e.g. computed tomography [CT]

Abstract

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).

IPC Classes  ?

• C08L 81/02 - PolythioethersPolythioether-ethers
• C08K 3/013 - Fillers, pigments or reinforcing additives
• C08K 5/54 - Silicon-containing compounds
• C08K 7/04 - Fibres or whiskers inorganic

Abstract

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.

IPC Classes  ?

• G02B 6/38 - Mechanical coupling means having fibre to fibre mating means
• C08G 75/0204 - Polyarylenethioethers
• C08K 3/36 - Silica

Abstract

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.

IPC Classes  ?

• C08F 232/08 - Copolymers of cyclic compounds containing no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system having condensed rings
• C08F 210/02 - Ethene
• C08K 5/12 - EstersEther-esters of cyclic polycarboxylic acids
• G02B 1/04 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics

Abstract

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.

IPC Classes  ?

• G01M 13/021 - Gearings

Abstract

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.

IPC Classes  ?

• G01M 13/021 - Gearings

Abstract

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).

IPC Classes  ?

• C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
• C08K 3/013 - Fillers, pigments or reinforcing additives
• C08K 5/29 - Compounds containing carbon-to-nitrogen double bonds
• C08K 9/04 - Ingredients treated with organic substances

Abstract

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).

IPC Classes  ?

• C08F 210/02 - Ethene
• C08F 4/6592 - Component covered by group containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring

Abstract

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.

IPC Classes  ?

• B29C 48/57 - Screws provided with kneading disc-like elements, e.g. with oval-shaped elements
• B29B 7/48 - MixingKneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
• B29B 9/14 - Making granules characterised by structure or composition fibre-reinforced
• B29C 48/40 - Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws, e.g. twin screw extruders
• B29C 48/655 - Screws with two or more threads having three or more threads
• C08J 3/20 - Compounding polymers with additives, e.g. colouring
• C08J 5/04 - Reinforcing macromolecular compounds with loose or coherent fibrous material

Abstract

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).

IPC Classes  ?

• C08L 101/00 - Compositions of unspecified macromolecular compounds
• C08L 1/02 - CelluloseModified cellulose
• C08L 3/00 - Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
• C08L 23/02 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bondCompositions of derivatives of such polymers not modified by chemical after-treatment

Abstract

2/g in an amount of 5.0 to 16 parts by mass, and polyalkylene glycol (E) in an amount of 0.5 to 3.0 parts by mass.

IPC Classes  ?

• C08L 59/00 - Compositions of polyacetalsCompositions of derivatives of polyacetals
• C08K 3/04 - Carbon
• C08K 5/00 - Use of organic ingredients
• C08K 7/18 - Solid spheres inorganic

Abstract

0000°C that is not less than 40°C at the injection rate of 10 cm30010101010°C that is not less than 40°C at the injection rate of 10 cm3001001010).

IPC Classes  ?

• C08L 101/00 - Compositions of unspecified macromolecular compounds
• C08K 3/014 - Stabilisers against oxidation, heat, light or ozone
• C08K 5/00 - Use of organic ingredients
• C08L 21/00 - Compositions of unspecified rubbers
• C08L 81/02 - PolythioethersPolythioether-ethers

Abstract

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.

IPC Classes  ?

• C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
• C08J 5/04 - Reinforcing macromolecular compounds with loose or coherent fibrous material
• C08J 5/18 - Manufacture of films or sheets
• C08K 3/013 - Fillers, pigments or reinforcing additives
• C08K 5/23 - Azo-compounds
• C08L 69/00 - Compositions of polycarbonatesCompositions of derivatives of polycarbonates

Abstract

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.

IPC Classes  ?

• C08G 2/24 - Copolymerisation of aldehydes or ketones with acetals

Abstract

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.

IPC Classes  ?

• C08L 59/04 - Copolyoxymethylenes
• C08L 71/02 - Polyalkylene oxides
• C08K 3/22 - OxidesHydroxides of metals
• C08K 5/3472 - Five-membered rings
• C08K 5/20 - Carboxylic acid amides
• C08K 5/13 - PhenolsPhenolates
• C08K 5/17 - AminesQuaternary ammonium compounds

Abstract

2/g or more.

IPC Classes  ?

• C08L 59/04 - Copolyoxymethylenes
• C08K 3/04 - Carbon
• C08K 3/22 - OxidesHydroxides of metals
• C08K 5/13 - PhenolsPhenolates
• C08L 71/02 - Polyalkylene oxides

Abstract

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.

IPC Classes  ?

• B29C 45/76 - Measuring, controlling or regulating
• G06F 30/10 - Geometric CAD
• G06F 30/23 - Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
• G06F 30/28 - Design optimisation, verification or simulation using fluid dynamics, e.g. using Navier-Stokes equations or computational fluid dynamics [CFD]
• G06F 113/22 - Moulding

Abstract

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.

IPC Classes  ?

• B29C 45/76 - Measuring, controlling or regulating
• B29C 45/17 - Component parts, details or accessoriesAuxiliary operations
• B29C 45/26 - Moulds
• G16Z 99/00 - Subject matter not provided for in other main groups of this subclass

Abstract

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.

IPC Classes  ?

• C08F 210/02 - Ethene

Abstract

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.

IPC Classes  ?

• C08F 4/6592 - Component covered by group containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring

Abstract

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%.

IPC Classes  ?

• C08G 63/197 - Hydroxy compounds containing aromatic rings containing two or more aromatic rings containing condensed aromatic rings
• C08G 63/181 - Acids containing aromatic rings
• C08G 63/19 - Hydroxy compounds containing aromatic rings

Abstract

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.

IPC Classes  ?

• C08G 63/87 - Non-metals or inter-compounds thereof
• C08G 63/19 - Hydroxy compounds containing aromatic rings

Abstract

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.

IPC Classes  ?

• C08G 2/04 - Polymerisation by using compounds which act upon the molecular weight, e.g. chain-transferring agents
• C08G 2/10 - Polymerisation of cyclic oligomers of formaldehyde
• C08G 2/18 - Copolymerisation of aldehydes or ketones

Abstract

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.

IPC Classes  ?

• C08G 2/22 - Copolymerisation of aldehydes or ketones with epoxy compounds

Abstract

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.

IPC Classes  ?

• C08K 3/04 - Carbon
• C08L 29/14 - Homopolymers or copolymers of acetals or ketals obtained by polymerisation of unsaturated acetals or ketals or by after-treatment of polymers of unsaturated alcohols
• C08L 81/04 - Polysulfides
• C08G 63/183 - Terephthalic acids
• B29C 48/40 - Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws, e.g. twin screw extruders
• B29C 48/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired formApparatus therefor
• B29C 45/00 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor

Abstract

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.

IPC Classes  ?

• C08F 232/00 - Copolymers of cyclic compounds containing no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system
• C08F 4/6592 - Component covered by group containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring
• C08F 210/00 - Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond

Abstract

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.

IPC Classes  ?

• C08F 232/00 - Copolymers of cyclic compounds containing no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system
• C08F 4/6592 - Component covered by group containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring
• C08F 210/00 - Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond

Abstract

122 each independently denote an arylene group.

IPC Classes  ?

• C08L 67/03 - Polyesters derived from dicarboxylic acids and dihydroxy compounds the dicarboxylic acids and dihydroxy compounds having the hydroxy and the carboxyl groups directly linked to aromatic rings
• C08G 63/60 - Polyesters derived from hydroxy carboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from the reaction of a mixture of hydroxy carboxylic acids, polycarboxylic acids and polyhydroxy compounds
• C08K 3/34 - Silicon-containing compounds
• C08K 3/36 - Silica
• C08K 7/04 - Fibres or whiskers inorganic
• C08K 7/14 - Glass
• H01R 13/46 - BasesCases

Abstract

122 each independently represent an arylene group.

IPC Classes  ?

• C08L 67/03 - Polyesters derived from dicarboxylic acids and dihydroxy compounds the dicarboxylic acids and dihydroxy compounds having the hydroxy and the carboxyl groups directly linked to aromatic rings
• C08G 63/60 - Polyesters derived from hydroxy carboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from the reaction of a mixture of hydroxy carboxylic acids, polycarboxylic acids and polyhydroxy compounds
• C08K 7/04 - Fibres or whiskers inorganic
• C08K 7/14 - Glass
• C08K 7/24 - Expanded, porous or hollow particles inorganic
• C08K 7/28 - Glass
• H01R 13/46 - BasesCases

Abstract

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.

IPC Classes  ?

• C08L 81/02 - PolythioethersPolythioether-ethers
• B29B 7/46 - MixingKneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
• B29B 9/06 - Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
• C08K 3/01 - Use of inorganic substances as compounding ingredients characterised by their specific function
• C08K 5/5415 - Silicon-containing compounds containing oxygen containing at least one Si—O bond

Abstract

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).

IPC Classes  ?

• C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
• B29C 65/16 - Laser beam
• C08K 3/013 - Fillers, pigments or reinforcing additives
• C08K 3/32 - Phosphorus-containing compounds
• C08K 5/29 - Compounds containing carbon-to-nitrogen double bonds
• C08L 63/00 - Compositions of epoxy resinsCompositions of derivatives of epoxy resins
• C08L 69/00 - Compositions of polycarbonatesCompositions of derivatives of polycarbonates

Abstract

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.)

IPC Classes  ?

• C08G 2/10 - Polymerisation of cyclic oligomers of formaldehyde

Abstract

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.]

IPC Classes  ?

• C08G 2/10 - Polymerisation of cyclic oligomers of formaldehyde

Abstract

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.

IPC Classes  ?

• C08L 71/10 - Polyethers derived from hydroxy compounds or from their metallic derivatives from phenols
• C08K 3/32 - Phosphorus-containing compounds

Abstract

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.

IPC Classes  ?

• C08F 232/04 - Copolymers of cyclic compounds containing no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system having no condensed rings having one carbon-to-carbon double bond
• C08F 4/6592 - Component covered by group containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring
• C08F 210/02 - Ethene

Abstract

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.

IPC Classes  ?

• C08F 232/04 - Copolymers of cyclic compounds containing no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system having no condensed rings having one carbon-to-carbon double bond
• C08F 4/6592 - Component covered by group containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring
• C08F 210/02 - Ethene
• C08L 45/00 - Compositions of homopolymers or copolymers of compounds having no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic or in a heterocyclic ring systemCompositions of derivatives of such polymers

Abstract

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.

IPC Classes  ?

• C08F 232/04 - Copolymers of cyclic compounds containing no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system having no condensed rings having one carbon-to-carbon double bond
• C08F 4/6592 - Component covered by group containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring
• C08F 210/02 - Ethene

Abstract

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.

IPC Classes  ?

• C08F 4/64 - Titanium, zirconium, hafnium, or compounds thereof
• C08F 4/76 - MetalsMetal hydridesMetallo-organic compoundsUse thereof as catalyst precursors selected from metals not provided for in group selected from refractory metals selected from titanium, zirconium, hafnium, vanadium, niobium, or tantalum
• C08F 232/04 - Copolymers of cyclic compounds containing no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system having no condensed rings having one carbon-to-carbon double bond
• C08F 2/06 - Organic solvent
• C08F 4/08 - Metallic compounds other than hydrides and other than metallo-organic compoundsBoron halide or aluminium halide complexes with organic compounds containing oxygen of alkali metals
• C08F 4/30 - Inorganic compounds
• C08K 3/02 - Elements
• C08F 232/06 - Copolymers of cyclic compounds containing no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system having no condensed rings having two or more carbon-to-carbon double bonds
• C08F 4/6592 - Component covered by group containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring

Abstract

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.

IPC Classes  ?

• C08L 59/00 - Compositions of polyacetalsCompositions of derivatives of polyacetals
• C08K 5/3435 - Piperidines
• C08L 79/04 - Polycondensates having nitrogen-containing heterocyclic rings in the main chainPolyhydrazidesPolyamide acids or similar polyimide precursors

Abstract

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

IPC Classes  ?

• C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
• C08K 3/013 - Fillers, pigments or reinforcing additives
• C08L 63/00 - Compositions of epoxy resinsCompositions of derivatives of epoxy resins

Abstract

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.

IPC Classes  ?

• C08G 2/22 - Copolymerisation of aldehydes or ketones with epoxy compounds
• C08L 59/04 - Copolyoxymethylenes
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 80/00 - Products made by additive manufacturing
• B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
• B33Y 70/00 - Materials specially adapted for additive manufacturing

Abstract

Provided are: an on-board transformer with excellent tracking resistance; and a production method thereof.　The on-board transformer contains at least one resin molded body. The resin molded body contains a polyarylene sulfide resin and magnesium hydroxide. The amount of magnesium hydroxide in the resin molded body is 100-430 parts by mass with respect to 100 parts by mass of the polyarylene sulfide resin. The volume fraction of the polyarylene sulfide resin in the resin molded body is 15-50%.

IPC Classes  ?

• H01F 30/10 - Single-phase transformers
• C08K 3/013 - Fillers, pigments or reinforcing additives
• C08K 3/22 - OxidesHydroxides of metals
• C08L 23/02 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bondCompositions of derivatives of such polymers not modified by chemical after-treatment
• C08L 23/08 - Copolymers of ethene
• C08L 25/04 - Homopolymers or copolymers of styrene
• C08L 25/06 - Polystyrene
• C08L 27/12 - Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogenCompositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
• C08L 81/02 - PolythioethersPolythioether-ethers
• H01F 41/04 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets for manufacturing coils

Abstract

The present invention is able to provide a polyacetal resin composition which exhibits high hot water resistance, while having excellent productivity.　A polyacetal resin composition according to the present invention contains, per 100 parts by mass of (A) a polyacetal resin, 1 part by mass to 100 parts by mass of (B) glass fibers that are surface-treated with a blocked isocyanate compound, an aminosilane coupling agent and an epoxy resin, 0.001 part by mass to 2 parts by mass of (C) at least one organic metal compound that is selected from among organic metal compounds comprising a metal which is selected from among Zn, Sn and Pb, and 0.002 part by mass to 10 parts by mass of (D) a triazine derivative that has a nitrogen-containing functional group.

IPC Classes  ?

• C08L 59/02 - Polyacetals containing polyoxymethylene sequences only
• C08K 5/098 - Metal salts of carboxylic acids
• C08K 5/3492 - Triazines
• C08K 7/28 - Glass
• C08K 9/04 - Ingredients treated with organic substances

Abstract

The present invention is able to provide a polyacetal resin composition which exhibits high hot water resistance, while having excellent productivity.　A polyacetal resin composition according to the present invention contains, per 100 parts by mass of (A) a polyacetal resin, 1 part by mass to 100 parts by mass of (B) glass fibers that are surface-treated with a blocked isocyanate compound, an aminosilane coupling agent and an epoxy resin, 0.001 part by mass to 1.0 part by mass of (C) a boric acid compound, and 0.002 part by mass to 10 parts by mass of (D) a triazine derivative that has a nitrogen-containing functional group.

IPC Classes  ?

• C08L 59/02 - Polyacetals containing polyoxymethylene sequences only
• C08K 3/38 - Boron-containing compounds
• C08K 5/3492 - Triazines
• C08K 7/20 - Glass
• C08K 9/04 - Ingredients treated with organic substances

Abstract

This method for producing a thermoplastic resin composition comprises a step for melting and kneading a thermoplastic resin and a bundled body of fibrous fillers by feeding the same to a twin-screw extruder having a pair of screws. The melting and kneading step is performed in a kneading zone of the twin-screw extruder. Each of the pair of screws disposed in the kneading zone has: two or more backward-feed screw elements that are each equipped with a single stripe of flight having at least one notch formed therein; and two or more forward-feed screw elements. The backward-feed screw elements and forward-feed screw elements are arranged alternately so as to be adjacent to each other in the axial direction of the screw.

IPC Classes  ?

• B29B 9/14 - Making granules characterised by structure or composition fibre-reinforced
• B29B 7/46 - MixingKneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
• B29C 48/40 - Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws, e.g. twin screw extruders
• B29C 48/55 - Screws having reverse-feeding elements
• B29C 48/605 - Screws characterised by details of the thread, i.e. the shape of a single thread of the material-feeding screw the thread being discontinuous

Goods & Services

Unprocessed plastics; unprocessed artificial resins; unprocessed plastics for industrial use; unprocessed plastics (plastics in primary form); chemicals used in industry; unprocessed plastics in the form of pellet, powder, flake, grain; unprocessed synthetic resins; unprocessed thermoplastic resins. Plastic semi-worked products; semi-processed plastics; semi-processed synthetic resins; artificial resins, semi-processed. Recycling of rubbish; recycling of trash; recycling of plastic; processing of plastics.

Abstract

A molded article which exhibits an improved vibration-damping effect. The vibration-damping molded article includes a resin composition including at least a thermoplastic resin A, an olefin-based elastomer B having a reactive functional group, and an inorganic filler C, wherein the inorganic filler C is coated with the olefin-based elastomer B.

IPC Classes  ?

• C08L 81/04 - Polysulfides
• C08K 3/34 - Silicon-containing compounds
• C08K 9/04 - Ingredients treated with organic substances
• C08K 3/22 - OxidesHydroxides of metals