Polyvinyl chlorideresin composition

Details Polyvinyl chlorideresin composition Polyvinyl chlorideresin composition

1989-06-14

1991-08-27

Ziebler, Jacob

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

Synthetic resins

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

525310, C08L 5104

Patent

active

050433865

ABSTRACT:
Disclosed is a modifier to be incorporated in a polyvinyl chloride resin, which is a graft copolymer obtained by carrying out, in the presence of 100 parts by weight of a butadiene rubber having a swelling degree of 10 to 50 and an average particle diameter of 0.1 to 0.4 .mu.m, first-stage graft polymerization of 1 of 42 parts by weight of methyl methacrylate and 0 to 5 parts by weight of an alkyl acrylate, second-stage graft polymerziation of 10 to 120 parts by weight of styrene and third-stage graft polymerization of 7 to 75 parts by weight to methyl methacrylate and 0 to 20 parts by weight of an alkyl acrylate, the content of the butadiene rubber in the graft copolymer being 35 to 75% by weight. The polyvinyl chloride resin composition having this modifier incorporated therein provides a molded article having excellent impact resistance, solvent resistance, and transparency.

REFERENCES:
patent: 4362845 (1982-12-01), Kamata et al.

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