Polyamide resin compositions
AssigneeMitsui Petrochemical Industries, Ltd.
InventorsHideki Sakai, Kazuo Ishiwatari, Fumitoshi Ikejiri
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Abstract
A polyamide resin composition which comprises: (A) an aromatic polyamide resin comprising preferably a terephthalic acid component and a diamine component comprising at least one of an aliphatic diamine component and an alicyclic diamine component; (B) a fibrous reinforcement; and (C) at least one additive selected from the group consisting of a salt of the group I, II and III metals of the periodic table of a higher fatty acid salt and an acid ester, a partially saponified ester and a metal salt of an aliphatic carboxylic acid of 26-32 carbons. The resin composition is of high fluidity and mold-releasing properties as well as of high heat resistance and rigidity, so that the composition can be molded with decomposition of the resins.
Claims31
A polyamide resin molding composition which comprises:
- (A) as the sole polyamide of the composition an aromatic polyamide resin consisting essentially of (a) a wholly aromatic dicarboxylic acid component which consists essentially of a terephthalic acid component in amounts of 40-100 mole % and an aromatic dicarboxylic acid component other than the terephthalic acid component in amounts of 60-0 mole %, the total of the terephthalic acid component and the other dicarboxylic acid component being 100 mole % and, (b) a diamine component comprising at least one of an aliphatic diamine component and an alicyclic diamine component;
- (B) a fibrous reinforcement in amount of 0-200 parts by weight in relation to 100 parts by weight of the polyamide resin;
- and
- (C) at least one additive selected from the group consisting of a higher fatty acid metal salt and a derivative of an aliphatic carboxylic acid of 26-32 carbons, the metal being selected from the I, II and III group metals of the periodic table, and the derivative being selected from the group consisting of an acid ester, a partially saponified ester and a metal salt, in amounts of 0.01-5 parts by weight in relation to 100 parts by weight of the polyamide resin.
A polyamide resin molding composition comprising (a) an aromatic dicarboxylic component which contains a terephthalic acid component in amounts of 75-100 mole %, and aromatic dicarboxylic acid components other than the terephthalic acid component in amounts of 25-0 mole %, and a diamine component composed of aliphatic diamine components of 10-18 carbons;
- (B) a fibrous reinforcement in amounts of 0-200 parts by weight in relation to 100 parts by weight of the polyamide resin;
- and
- (C) at least one additive selected from the group consisting of a higher fatty acid salt and a derivative of an aliphatic carboxylic acid of 26-32 carbons, the metal being selected from the I, II and III group metals of the periodic table, and the derivative being selected from the group consisting of an acid ester, a partially saponified ester and a metal salt, in amounts of 0.01-5 parts by weight in relation to 100 parts by weight of the polyamide resin.
Dependencies are inferred from the claim text.