Asahi Kasei Chemicals Corporation

Asahi Kasei Kabushiki Kaisha

Yasukazu Shikano

Masashi Okamoto

Takaaki Miyoshi

Katsushi Watanabe

Masaaki Aramaki

Shinji Ieda

Teruaki Sakuma

Tomoyo Kawamura

Hiroki Matsui

Kazunori Terada

Kazuya Noda

Yosuke Takahashi

Yu Nitto

Hiroshi Oyamada

Junichi Tsuzuki

Kouji Satou

Yukiyoshi Sasaki

Aya Takagiwa

The present invention provides a polyamide resin composition including (A) a polyamide resin, (B) an alkali metal compound and/or an alkaline earth metal compound, and (C) one or more compounds selected from following (C1) to (C4): (C1) a salt of one or more metal elements selected from the group consisting of groups 3, 4, 11, 13, and 14 of periodic table, (C2) at least one organic heat stabilizer selected from the group consisting of a hindered phenol compound, a hindered amine compound, and an organic phosphorus compound, and (C3) a crystalline thermoplastic resin having a lower melting point than that of the component (A) and/or an amorphous thermoplastic resin having a lower Vicat softening point than that of the component (A), and (C4) an acid.

Polyamide resin composition, method for producing polyamide resin composition, and molded article

A polyoxymethylene resin molded article comprising 100 parts by mass of a polyoxymethylene resin (A) and 0.1 to 5 parts by mass of a sliding agent (B), wherein four or more dispersion domains of the sliding agent (B) are present in a region of 1000 nm in depth from a surface of the molded article and 12000 nm in width, and the dispersion domain has an average minor diameter of 300 nm or less, and an average major diameter of 600 nm or more and 5000 nm or less.

Polyoxymethylene resin molded article, sliding member, and ramp for hard disk

Provided is a surface-treated carbon nanotube having few surface fractures, not reducing the molecular weight of the resin to be mixed and having excellent extrudability. In the surface-treated carbon nanotube, the thermal reduction amount at 600&#xb0; C. in a nitrogen atmosphere is 0.2 to 40%, the surface oxygen concentration measured by X-ray photoelectron spectroscopy (XPS) is 1.5 to 40 atm % and the surface sulfur concentration is less than 0.1 atm %.

Surface-treated carbon nanotube and resin composition

The present invention provides a molded article comprising a polyamide resin composition, wherein (the average concentration of alkali metal and/or alkaline earth metal elements in a region within a depth of 3 &#x3bc;m from the surface of the molded article)/(the average concentration of alkali metal and/or alkaline earth metal elements in a region except for the region within a depth of 3 &#x3bc;m from the surface of the molded article)&#x3e;2.

Molded article comprising polyamide resin composition

Polyamide resin composition and molded product

The present invention relates to a polyamide obtainable by polymerizing an (a) dicarboxylic acid comprising at least 50 mol % of an alicyclic dicarboxylic acid and a (b) diamine comprising at least 50 mol % of a diamine having a substituent branched from a main chain.

Polyamide, polyamide composition, and method for producing polyamide

[Problem to be Solved] To provide a polyamide having a high melting point, which has excellent strength, toughness, and stability under heating. [Solution] This polyamide is obtained by polymerizing an (a) dicarboxylic acid comprising at least 50 mol % of an alicyclic dicarboxylic acid and a (b) diamine comprising at least 50 mol % of a diamine having a pentamethylenediamine skeleton, wherein the polyamide has a cyclic amino end amount of 30 to 60&#x3bc; equivalents/g.

Polyamide and polyamide composition

A polyamide comprising (a) a unit comprising adipic acid and hexamethylenediamine and (b) a unit comprising isophthalic acid and hexamethylenediamine, wherein a ratio of the isophthalic acid component to the total carboxylic acid component in the polyamide is 0.05&#x2266;(x)&#x2266;0.5 and a range of blocking ratio (Y) is &#x2212;0.3&#x2266;(Y)&#x2266;0.8. Also provided are compositions comprising 30 to 95% by mass of the above polyamide and 5 to 70% by mass of an inorganic filler.

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Tokyo, Japan

Yasukazu Shikano