Abstract: An inorganic material-reinforced thermoplastic polyester resin composition from which a molding with high rigidity and high strength having less appearance defects such as floating of inorganic reinforcing material and less warp deformation and having a uniform textured appearance without irregularities can be obtained comprises specific amounts of a polybutylene terephthalate resin (A), a polyethylene terephthalate resin (B), a copolymerized polybutylene terephthalate resin (C), a copolymerized polyethylene terephthalate resin (D), a polycarbonate-based resin (E), a glass fiber-based reinforcing material (F), and a transesterification inhibitor (G), respectively, wherein glass fiber-based reinforcing material (F) comprises specific amounts of a flat cross-section glass fiber (F1) and a milled short glass fiber (F2), respectively, wherein glass fiber-based reinforcing material (F) in the resin composition has a weight average fiber length Lw of 200 to 700 ?m, and wherein the inorganic material-reinforced ther

Abstract: [PROBLEM] To provide a polyamide resin composition capable of stably providing a molded article which is less likely to be affected by variations in production conditions, and has high rigidity, and good appearance. [SOLUTION] A polyamide resin composition including 0 to 3 parts by mass of a metal hypophosphite (D) with respect to a total of 100 parts by mass of 20 to 60 parts by mass of an aliphatic polyamide resin (A), 5 to 20 parts by mass of a polyamide MXD6 resin (B), and 30 to 59 parts by mass of an inorganic reinforcing material (C), wherein the polyamide resin composition has an MFR of 3 to 60 g/10 min when measured under conditions of a load of 2.16 kg and 275° C.

Abstract: The present invention is an inorganic material-reinforced thermoplastic polyester resin composition which enables to provide a long and thin molding excellent in appearance while maintaining proper mechanical properties such as rigidity and impact resistance, which contains 20 to 55 parts by mass of a polybutylene terephthalate resin (A), 1 to 30 parts by mass of a polyethylene terephthalate resin (B), 3 to 30 parts by mass of a semicrystalline resin and/or amorphous resin (C), and 25 to 65 parts by mass of an inorganic reinforcing material (D). The inorganic reinforcing material (D) in the resin composition has a number average fiber length Ln of 100 to 500 ?m. The inorganic material-reinforced thermoplastic polyester resin composition is excellent in fluidity, and has a crystallization temperature during cooling within a specified range.

Abstract: The present invention aims to provide an inorganic reinforced polyamide resin composition that achieves incompatible mechanical properties, i.e., high stiffness and impact resistance (high toughness), has excellent flowability, and further has excellent long-term wear resistance (high sliding performance) to an inorganic fiber reinforcing material used as a sliding counterpart material. An inorganic reinforced polyamide resin composition containing: 10 to 55 mass% of a crystalline polyamide resin (A); 1 to 20 mass% of an amorphous polyamide resin (B); 40 to 70 mass% of an inorganic reinforcing material (C); and 0.5 to 10 mass% of a modified polyolefin resin (D) having a reactive functional group that is capable of reacting with a terminal group and/or a main-chain amide group of a polyamide resin, characterized in that a blending mass ratio between the components (A) and (D) satisfies 0.01 ? (D)/(A) ? 0.2, and a blending mass ratio between the components (A) and (B) satisfies 0.05 ? (B)/(A) ? 0.7.

Abstract: A polyamide resin composition containing a polyimide resin (A), a modified styrene-based copolymer (B), a modified high-density polyethylene (C), and an aliphatic metal salt (D), and having a melt mass flow rate (MFR) of 20 g/10 minutes or more and less than 60 g/10 minutes and a 65% RH equilibrium water absorption rate of less than 3%. The polyamide resin composition can form a molded article having a sufficiently high limit of fatigue against continuous load, achieve high mechanical characteristics and high fluidity to prevent the occurrence of a short shot or decrease in the strength of a welded part even in a large and/or thick molded article, and has excellent mold releasability and more excellent abrasion resistance than ever before.

Abstract: The present invention is a flame retardant polyester resin composition that contains 3 to 74% by mass of a polybutylene terephthalate resin (A), 3 to 60% by mass of a polyethylene terephthalate resin (B1), 3 to 50% by mass of a copolyester resin (B2), 10 to 50% by mass of a halogen-free flame retardant (C), and 10 to 40% by mass of a glass fiber (D), wherein the copolyester resin (B2) is a polyester resin obtained by copolymerizing an ethylene terephthalate unit with at least one selected from the group consisting of neopentyl glycol, 1,2-propanediol, diethylene glycol, 1,4-cyclohexanedimethanol, and isophthalic acid, and that satisfies prescribed characteristics.

Abstract: A pellet production method comprising: an operation in which a strand comprising a glass-fiber-reinforced polyamide resin composition containing 50 mass % to 80 mass % of glass fiber is extruded from an orifice at a die; an operation in which the strand is drawn into water within a tank and is cooled; and an operation in which the cooled strand is cut to obtain a pellet; wherein an angle of incidence at which the strand enters the water within the tank is not less than 70° but is less than 90°; and wherein a ratio of a diameter of the pellet to a diameter of the orifice (diameter of the pellet/diameter of the orifice) is 0.65 to 0.97.

Abstract: The present invention is a thermoplastic polyester resin composition which in a composition including an inorganic-reinforcing material such as glass fiber, maintains a good surface appearance while having high strength and high stiffness, has little warpage deformation, and generates very little burr; and an inorganic-reinforced thermoplastic polyester resin composition comprising 20 to 60% by mass of a polybutylene terephthalate resin (A), 5 to 20% by mass of an amorphous resin (B), 30 to 60% by mass of an inorganic-reinforcing material (C), 0.5 to 10% by mass of an ethylene-glycidyl (meth)acrylate copolymer (D), and 0.05 to 2% by mass of a transesterification inhibitor (E), wherein the composition has a melt viscosity of no less than 0.5 kPa·s and no more than 1.5 kPa·s at 265° C. and a shear rate of 10 sec?1.

Abstract: A polyamide resin composition containing a polyimide resin (A), a modified styrene-based copolymer (B), a modified high-density polyethylene (C), and an aliphatic metal salt (D), and having a melt mass flow rate (MFR) of 20 g/10 minutes or more and less than 60 g/10 minutes and a 65% RH equilibrium water absorption rate of less than 3%. The polyamide resin composition can form a molded article having a sufficiently high limit of fatigue against continuous load, achieve high mechanical characteristics and high fluidity to prevent the occurrence of a short shot or decrease in the strength of a welded part even in a large and/or thick molded article, and has excellent mold releasability and more excellent abrasion resistance than ever before.

Abstract: A pellet production method comprising: an operation in which a strand comprising a composition containing thermoplastic resin and reinforcing material is extruded from an orifice at a die; an operation in which the strand is drawn into water within a tank and is cooled; and an operation in which the cooled strand is cut to obtain a pellet; wherein at least one first guide roller for guiding the strand within the tank is provided within the tank, and an angle made by portions of the strand that are ahead of and behind that first guide roller which is in an upstreammost location is not less than 90° but is less than 180°; and wherein a ratio of a diameter of the pellet to a diameter of the orifice (diameter of the pellet/diameter of the orifice) is 0.45 to 0.80.

Abstract: The present invention is a polyamide resin composition which contains 50 to 90% by mass of a crystalline polyamide resin (A) and 9 to 49% by mass of a talc (B). The average particle size of secondary particles of the talc (B) in the polyamide resin composition is 30 ?m or less. The polyamide resin composition has an exothermic peak present on a high temperature side of a maximum exothermic peak of a crystallization temperature during cooling in a cooling process of measurement by means of a differential scanning calorimeter. Variations in physical characteristics such as a molding shrinkage, mechanical characteristics, and a heat distortion temperature of the polyamide resin composition are suppressed among different production machines or different production lots. Consequently, characteristics within desired ranges are stably obtained.

Abstract: The present invention is a polyamide resin composition containing 50 to 90% by mass of a crystalline polyamide resin (A) and 9 to 49% by mass of a talc (B), and preferably further containing a coupling agent (C) and a fatty acid metal salt (D), in which an average particle size of secondary particles of the talc (B) in the polyamide resin composition is greater than 30 ?m. The polyamide resin composition is less likely to cause a poor appearance of a molded article or occurrence of sink marks, and can stably provide characteristics within desired ranges.

Abstract: A method produces a composite porous membrane including a porous membrane A formed of a polyolefin-based resin; and a porous membrane B containing a heat-resistant resin and laminated on the porous membrane A, including: (i) applying a heat-resistant resin solution onto a base film, followed by passing the coated film through a low-humidity zone, and then through a high-humidity zone to form a heat-resistant resin membrane on the base film; and (ii) bonding together the heat-resistant resin membrane formed in step (i) and a porous membrane A formed of a polyolefin-based resin, followed by converting the heat-resistant resin membrane into a porous membrane B by immersion in a solidification bath, and washing and drying the same to obtain the composite porous membrane.

Abstract: A composite porous membrane is a composite porous membrane, wherein a porous membrane B including a heat-resistant resin is laminated on the surface of a polypropylene resin of an outermost layer of a porous membrane A composed of at least one layer, wherein at least one of the outermost layers comprises the polypropylene resin. The composite porous membrane satisfies a particular range of peeling strength at the interface between the porous membrane A and the porous membrane B and a particular range of difference between air resistance of the whole composite porous membrane and air resistance of the porous membrane A, provided that the porous membrane A satisfies a particular range of average pore size and porosity.

Abstract: A method produces a composite porous membrane including a porous membrane A formed of a polyolefin-based resin; and a porous membrane B containing a heat-resistant resin and laminated on the porous membrane A, including: (i) applying a heat-resistant resin solution onto a base film, followed by passing the coated film through a low-humidity zone, and then through a high-humidity zone to form a heat-resistant resin membrane on the base film; and (ii) bonding together the heat-resistant resin membrane formed in step (i) and a porous membrane A formed of a polyolefin-based resin, followed by converting the heat-resistant resin membrane into a porous membrane B by immersion in a solidification bath, and washing and drying the same to obtain the composite porous membrane.

Abstract: A composite porous membrane is a composite porous membrane, wherein a porous membrane B including a heat-resistant resin is laminated on the surface of a polypropylene resin of an outermost layer of a porous membrane A composed of at least one layer, wherein at least one of the outermost layers comprises the polypropylene resin. The composite porous membrane satisfies a particular range of peeling strength at the interface between the porous membrane A and the porous membrane B and a particular range of difference between air resistance of the whole composite porous membrane and air resistance of the porous membrane A, provided that the porous membrane A satisfies a particular range of average pore size and porosity.

Abstract: A composite porous membrane used as a separator for a battery includes a porous membrane A made of a polyolefin resin and a porous membrane B containing a heat-resistant resin laminated thereto, wherein the surface of the porous membrane B on the side that does not face the porous A has a three-dimensional network structure having nodes, and the peeling interface on the side of the porous membrane B formed when the porous membrane A and the porous membrane B are peeled off has a membrane morphology having pores with a pore size of 50 to 500 nm in an amount of at least 100 pores/10 ?m2.

Abstract: A composite porous membrane including a porous membrane A formed of a polyolefin-based resin; and a porous membrane B containing a heat-resistant resin and laminated on the porous membrane A, wherein the porous membrane A satisfies formulas (A) to (C), the composite porous membrane satisfies formula (D), and the composite porous membrane satisfies formulas (F) and (F) wherein thickness of porous membrane A<10 ?m formula (A); 0.01 ?m?average pore diameter of porous membrane A?1.0 ?m formula (B); 30% porosity of porous membrane A?70% formula (C); thickness of entire composite porous membrane?13 ?m formula (a); peel strength at interface between porous membrane A and porous membrane B?1.0 N/25 mm formula (E); 20?Y?X?100 formula CO and wherein X is a gas permeation resistance (seconds/100 ccAir) of porous membrane A, and Y is a gas permeation resistance (seconds/100 ccAir) of the composite porous membrane.