Heat-resistant copolymer of alpha-methylstyrene and acrylonitril

Details Heat-resistant copolymer of alpha-methylstyrene and acrylonitril Heat-resistant copolymer of alpha-methylstyrene and acrylonitril

1986-12-29

1988-09-27

Briggs, Sr., Wilbert J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525 70, C08L 5104

Patent

active

047742879

ABSTRACT:
A heat-resistant copolymer obtained by copolymerizing (A) 72-82 parts by weight of .alpha.-methylstyrene and (B) 26-18 parts by weight of acrylonitrile, characterized in that the copolymer contains (a) 0-15% by weight of monomer chain 13 (A)-(A)-(A)--, (b) 50% by weight or more of monomer chain --(A)-(A)-(B)--, and (c) 50% by weight or less of monomer chain --(B)-(A)-(B)--, the total of (a), (b) and (c) being 100% by weight. This copolymer is excellent in heat stability and moldability when molded at high temperatures, and the blending of this copolymer with other thermoplastic resins gives thermoplastic resins with excellent heat resistance.

REFERENCES:
patent: 3010936 (1961-11-01), Irvin
patent: 3270777 (1966-09-01), Thompson
patent: 4361684 (1982-11-01), Minematsu et al.
patent: 4427832 (1984-01-01), Yagi et al.
patent: 4526928 (1985-07-01), Mathumoto et al.

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