Heat resistant thermoplastic copolymers

Details Heat resistant thermoplastic copolymers Heat resistant thermoplastic copolymers

1989-04-18

1993-01-05

Stoll, Robert L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

525285, C08F 3402

Patent

active

H00011282

ABSTRACT:
Thermoplastic copolymers having excellent tensile and heat resistance properties are obtained by copolymerization of a monovinyl aromatic monomer, an .alpha.,.beta.-unsaturated dicarboxylic acid anhydride, an .alpha., .beta.-unsaturated carboxylic acid, and a C.sub.1 -C.sub.4 alkyl ester of methacrylic acid. In a preferred embodiment, a styrene/maleic anhydride/methacrylic acid/methyl methacrylate random copolymer is prepared. Impact properties are improved by incorporation of an elastomer.

REFERENCES:
patent: 4305869 (1981-12-01), Lee et al.
patent: 4341695 (1982-07-01), Lee et al.
patent: 4533689 (1985-08-01), Tayama et al.

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