Abstract: Polyamide fine particles include a polymer or a copolymer including a repeating structure unit represented by Formula (1) as a main component, wherein a ratio (r/ABET) of a porosity r occupying a particle surface and a BET specific surface area ABET that is a specific surface area of the particle surface measured by a BET method is 6.0 or more and 100.0 or less: wherein x is an integer of 2 or more and 3 or less.

Abstract: A fiber-reinforced polyamide resin base material comprises continuous reinforcing fibers, or comprises a reinforcing fiber base material in which discontinuous reinforcing fibers are dispersed, impregnated with a polyamide resin. In the polyamide resin, at least part of the polymer constituting the polyamide resin is an end-modified polyamide resin having, at an end group of the polymer, a structure constituted by a structural unit different from a repeating structural unit constituting the backbone of the polymer. A fiber-reinforced polyamide resin base material having an excellent impregnation property and thermal stability, less void, and excellent surface quality is provided.

Abstract: A fiber reinforced resin base material is formed by impregnating a continuous reinforcing fiber(s) or a reinforcing fiber material having a discontinuous fiber(s) dispersed therein with a resin composition which exhibits a single glass-transition temperature before and after being heated at 400° C. for one hour, wherein the resin composition is composed of (A) a thermoplastic resin having a glass-transition temperature of 100° C. or more and (B) a thermoplastic resin having a glass-transition temperature of less than 100° C. The fiber reinforced resin base material has excellent impregnation properties and thermal stability, having fewer voids, and having surface quality and high heat resistance.

Abstract: Provided is an end modified polyamide resin containing 1 to 20% by mass of an end structure represented by the following general formula (I) and 0.1 to 5% by mass of an end structure represented by the following general formula (II): —X—(R1—O)m—R2??(I) wherein m represents 2 to 100; R1 represents a divalent hydrocarbon group having 2 to 10 carbon atoms, and R2 represents a monovalent hydrocarbon group having 1 to 30 carbon atoms; —X— represents —NH—, —N(CH3)— or —(C?O)—; and m R1s in the general formula (I) may be the same or different, and —Y—R3??(II) wherein R3 represents a monovalent hydrocarbon group having 1 to 30 carbon atoms; and —Y— in the general formula (II) represents —(C?O)— when X in the general formula (I) is —NH— or —N(CH3)—, Y in the general formula (II) represents —NH— or —N(CH3)— when X in the general formula (I) is —(C?O)—.

Abstract: A terminally modified polyamide resin has a terminal structure represented by general formula (I), wherein the terminal structure represented by general formula (I) is contained at a quantity of 1-10 mass % relative to 100 mass % of the terminally modified polyamide resin, the weight average molecular weight/content [mass %] ratio of the terminal structure represented by general formula (I) is 6,000-20,000, and the melt viscosity at a temperature corresponding to melting point+60° C. and at a shear rate of 9728 sec?1 is 0.1-8 Pa·s. General formula (I) is as follows: —X—(R1—O)m-R2 (I). In general formula (I), m denotes the range 2-100, R1 denotes a divalent hydrocarbon group having 2-10 carbon atoms, and R2 denotes H or a monovalent organic group, and —X— denotes —NH—, —N(CH3)—, —(C?O)— or —CH2—CH(OH)—CH2—O—. The number m of R1 groups contained in general formula (I) may be the same as, or different from, each other.

Abstract: A fiber-reinforced multilayered pellet includes a sheath layer and a core layer, the sheath layer being made of a resin composition containing a thermoplastic resin (a1) and a fibrous filler (b1), wherein the fibrous filler (b1) has a weight-average fiber length (Lw) of 0.1 mm to less than 0.5 mm and a weight-average fiber length/number-average fiber length ratio (Lw/Ln) of 1.0 to less than 1.8, the core layer being made of a resin composition containing a thermoplastic resin (a2) and a fibrous filler (b2), wherein the fibrous filler (b2) has a weight-average fiber length (Lw) of 0.5 mm to less than 15.0 mm and a weight-average fiber length/number-average fiber length ratio (Lw/Ln) of 1.8 to less than 5.0.

Abstract: A fiber-reinforced polyamide resin base material comprises continuous reinforcing fibers, or comprises a reinforcing fiber base material in which discontinuous reinforcing fibers are dispersed, impregnated with a polyamide resin. In the polyamide resin, at least part of the polymer constituting the polyamide resin is an end-modified polyamide resin having, at an end group of the polymer, a structure constituted by a structural unit different from a repeating structural unit constituting the backbone of the polymer. A fiber-reinforced polyamide resin base material having an excellent impregnation property and thermal stability, less void, and excellent surface quality is provided.

Abstract: Provided is an end modified polyamide resin containing 1 to 20% by mass of an end structure represented by the following general formula (I) and 0.1 to 5% by mass of an end structure represented by the following general formula (II): —X—(R1—O)m—R2??(I) wherein m represents 2 to 100; R1 represents a divalent hydrocarbon group having 2 to 10 carbon atoms, and R2 represents a monovalent hydrocarbon group having 1 to 30 carbon atoms; —X— represents —NH—, —N(CH3)— or —(C?O)—; and m R1s in the general formula (I) may be the same or different, and —Y—R3??(II) wherein R3 represents a monovalent hydrocarbon group having 1 to 30 carbon atoms; and —Y— in the general formula (II) represents —(C?O)— when X in the general formula (I) is —NH— or —N(CH3)—, Y in the general formula (II) represents —NH— or —N(CH3)— when X in the general formula (I) is —(C?O)—.

Abstract: A thermoplastic polyester resin composition includes 100 parts by weight of a thermoplastic polyester resin (A) having a melting point of 180 to 250° C. and 0.01 to 1 part by weight of a metal halide (B), wherein an area average particle size of the metal halide (B) in the thermoplastic polyester resin composition is 0.1 to 500 nm. The thermoplastic polyester resin composition has an excellent melt retention stability and is capable of producing a molded article excellent in mechanical properties and long-term resistance to oxidative degradation.

Abstract: A carbon fiber-reinforced thermoplastic resin composition includes a thermoplastic resin (A), a carbon fiber (B), and a titanium compound (C), an amount of the thermoplastic resin (A) being 10 to 65% by weight, an amount of the carbon fiber (B) being 35 to 90% by weight, based on 100% by weight of the total amount of the thermoplastic resin (A) and the carbon fiber (B), and an amount of the titanium compound (C) being 0.01 to 5 parts by weight, based on 100 parts by weight of the total amount of the thermoplastic resin (A) and the carbon fiber (B).

Abstract: A fiber-reinforced multilayered pellet includes a sheath layer and a core layer, the sheath layer being made of a resin composition containing a thermoplastic resin (a1) and a fibrous filler (b1), wherein the fibrous filler (b1) has a weight-average fiber length (Lw) of 0.1 mm to less than 0.5 mm and a weight-average fiber length/number-average fiber length ratio (Lw/Ln) of 1.0 to less than 1.8, the core layer being made of a resin composition containing a thermoplastic resin (a2) and a fibrous filler (b2), wherein the fibrous filler (b2) has a weight-average fiber length (Lw) of 0.5 mm to less than 15.0 mm and a weight-average fiber length/number-average fiber length ratio (Lw/Ln) of 1.8 to less than 5.0.

Abstract: A carbon fiber-reinforced thermoplastic resin composition includes a thermoplastic resin (A), a carbon fiber (B), and a titanium compound (C), an amount of the thermoplastic resin (A) being 10 to 65% by weight, an amount of the carbon fiber (B) being 35 to 90% by weight, based on 100% by weight of the total amount of the thermoplastic resin (A) and the carbon fiber (B), and an amount of the titanium compound (C) being 0.01 to 5 parts by weight, based on 100 parts by weight of the total amount of the thermoplastic resin (A) and the carbon fiber (B).

Abstract: A process for continuously producing a thermoplastic copolymer, in which a copolymer (A) containing unsaturated carboxylic acid alkyl ester units and unsaturated carboxylic acid units is produced and in succession heat-treated to perform intramolecular cyclization reaction by dehydration and/or dealcoholization reaction, for producing a thermoplastic copolymer (B) containing glutaric anhydride units and the unsaturated carboxylic acid alkyl ester units. The obtained copolymer is excellent in heat resistance and colorless transparency and very small in foreign matter content.

Abstract: A process for continuously producing a thermoplastic copolymer, in which a copolymer (A) containing unsaturated carboxylic acid alkyl ester units and unsaturated carboxylic acid units is produced and in succession heat-treated to perform intramolecular cyclization reaction by dehydration and/or dealcoholization reaction, for producing a thermoplastic copolymer (B) containing glutaric anhydride units and the unsaturated carboxylic acid alkyl ester units. The obtained copolymer is excellent in heat resistance and colorless transparency and very small in foreign matter content.

Abstract: A polyester composition prepared by melting and blending a polyester with a glycidyl ester compound, a glycidyl ether compound and a catalyst has good hydrolysis resistance and, when melted, gives little gas generation and undergoes little viscosity change. It is most favorable for parts of automobile, electric and electronic appliances such as connectors.

Abstract: A polyester composition prepared by melting and blending a polyester with a glycidyl ester compound, a glycidyl ether compound and a catalyst has good hydrolysis resistance and, when melted, gives little gas generation and undergoes little viscosity change. It is most favorable for parts of automobile, electric and electronic appliances such as connectors.

Abstract: A polyester composition prepared by melting and blending a polyester with a glycidyl ester compound, a glycidyl ether compound and a catalyst has good hydrolysis resistance and, when melted, gives little gas generation and undergoes little viscosity change. It is most favorable for parts of automobile, electric and electronic appliances such as connectors.