Heat resistant polyvinyl chloride copolymer and preparation proc

Details Heat resistant polyvinyl chloride copolymer and preparation proc Heat resistant polyvinyl chloride copolymer and preparation proc

1989-09-01

1992-11-24

Carrillo, Ana L.

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

Synthetic resins

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

525260, 525263, 525308, 525316, 525317, 524461, 524706, 524722, 524739, 524750, C08F25904, C08F 218, C08K 513

Patent

active

051662710

ABSTRACT:
A heat resistant polyvinyl chloride copolymer or a heat and impact resistant polyvinyl chloride copolymer is prepared by conducting graft copolymerization of N-substituted maleimide on a vinyl chloride resin or a rubber containing vinyl chloride resin.
The graft copolymerization reaction is carried out in the presence of a radical polymerizable monomer which is (1) liquid at the polymerization temperature, (2) capable of dissolving the N-substituted maleimide at the temperature, (3) 70.degree. C. or more in glass transition temperature of the polymer thereof, and (4) used in an amount sufficient to dissolve the N-substituted maleimide.

REFERENCES:
patent: 3549725 (1970-12-01), Rose
patent: 3682857 (1972-08-01), Harris
patent: 4762882 (1988-08-01), Okano
Database Chemical Abstracts (Host: STN), 1989, No. 112(10); abstract no. 78266s, Columbus, Ohio, US.
European Search Report for Application No. EP 89 30 9001 dated Mar. 21, 1990.

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