Toray Industries, Inc.

Atsushi Masunaga

Hideyuki Umetsu

Hideo Matsuoka

Koya Kato

Nobuyuki Tomioka

Masaru Akita

Hiroshi Nakagawa

Hidenobu Takao

Kenji Ishitake

Kenichi Okunaga

Eri Hatano

Shingo Nishida

The present invention addresses the problem of providing a polyaryletherketone resin composition having excellent toughness and fluidity, a fiber-reinforced resin base material having excellent impregnating ability and toughness, and a molded article thereof. In order to solve said problem, the present invention has the following compositional make-up. A polyaryletherketone resin composition containing, with respect to (A) 100 parts by mass of a polyaryletherketone, (B) 1-100 parts by mass of a liquid crystalline polyester, wherein the polyaryletherketone resin composition forms a sea-island structure, and the average diameter of the island phases is 10-1000 nm.

Polyaryletherketone resin composition, fiber-reinforced resin base material, and molded article

A polyamide resin composition includes a specified amount of a compound and/or its condensate that includes a hydroxyl group and an epoxy group or a carbodiimide group and has a specific structure. Another polyamide resin composition includes specified amounts of an aliphatic compound having three or more amino groups or three or more hydroxyl groups per molecule and a compound having more than one functional group per molecule that is reactive with the amino group or the hydroxyl group, wherein, when an ASTM No. 1 dumbbell of 3.2 mm in thickness produced by injection molding of the polyamide resin composition is processed by heat treatment at 130&#xb0; C. for 100 hours, an increase rate in concentration of a carboxyl group in the polyamide resin composition from a surface of the molded product to a depth of 0.2 mm after the heat treatment is lower than 70%.

Polyamide resin composition, method of manufacturing and molded product

There is provided a production method of a crystalline polyamide resin by thermal polycondensation of a mixture including at least a diamine component, a dicarboxylic acid component and water as a starting material, wherein the diamine component includes (A) pentamethylene diamine at a ratio that is equal to or greater than 10 mol % and less than 80 mol % relative to a gross amount of the diamine component; and the dicarboxylic acid component includes (B) at least one selected from the group consisting of an aromatic dicarboxylic acid, an alicyclic dicarboxylic acid and dialkyl ester derivatives thereof at a ratio that is equal to or greater than 76 mol % and equal to or less than 100 mol % relative to a gross amount of the dicarboxylic acid component.

Production method of crystalline polyamide resin

A polyamide resin composition includes 100 parts by weight of a (a) polyamide resin; and 0.1 to 10 parts by weight of a (b) hydroxyl group- and carboxyl group-containing compound, wherein the (b) hydroxyl group- and carboxyl group-containing compound has a ratio (COOH/OH) of 0.01 to 5.0 of a rate (percentage) of a carboxyl group-derived peak area to a total peak area in aC-NMR spectrum to a rate (percentage) of a hydroxyl group-derived peak area to a total peak area in aH-NMR spectrum and has a degree of branching of 0.05 to 0.35.

Polyamide resin composition and molded product

A method for producing a polyamide resin characterized by comprising thermally polycondension of tetramethylene diamine and either an aliphatic dicarboxylic acid having 7 or more carbon atoms or a salt thereof, and then being melt-polymerized at a temperature equal to or higher than the melting point thereof until the relative viscosity of a 0.01 g/ml solution thereof in 98% sulfuric acid solution with a 0.01 g/ml content at 25&#xb0; C. becomes 2.2-5.0.

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Nagoya, Japan

Atsushi Masunaga