Toray Industries, Inc.

Toshihiko Aya

Sho Kadoi

Koji Watanabe

Miyoshi Okamoto

Zenji Izumi

Hideaki Kitagawa

Takashi Sasagawa

Yasushi Kubo

The thermoplastic aromatic polyamideimide compolymers comprising the structural units (1), (2) and (3) represented by formulae, ##STR1## respectively, (2) and (3) being at ratio of 1 mole to 1 mole of (1), (3) being at a ratio of 0.95-0.05 mole to 0.05-0.95 mole of (2), (1) and (2) or (3) being alternatively interconnected and Ar and Ar' being composed of 5 to 70 mole % of ##STR2## and 95 to 30 mole % of ##STR3## provide the moldings being superior in heat stability and fluidity at the temperatures of 300.degree. to 400.degree. C. and injection moldable and having desired characteristics.

Thermoplastic aromatic polyamideimide copolymer from polyamide diamine

Polyimide prepolymers having excellent heat resistance can be prepared in one stage by the reaction of polyamines and aromatic double bond-containing dicarboxylic acids or derivatives thereof in the presence of oxide compounds of phosphorus without isolating any intermediate in the course of said reaction.

Method of preparing polyimide prepolymer from ethylenically unsaturated

Heat resistant molding resin composition

Thermoplastic polyamide imide copolymers are provided which are excellent in both heat stability and melt viscosity characteristics at a temperature of from about 300.degree. C. to about 400.degree. C., and method of preparation.

Thermoplastic polyamide imide copolymers and method of preparation

A multi-component thermoplastic fiber comprising a specified component of a copolymer of the vinyl series, and having very excellent drawability at a low temperature and excellent dimensional stability and a method of obtaining said product.

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Nagoya, Japan

Toshihiko Aya