Thermoplastic resin composition

Details Thermoplastic resin composition Thermoplastic resin composition

1990-02-27

1991-04-16

Ziegler, Jacob

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

Synthetic resins

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

525 76, 525 80, 525 86, C08L 5104

Patent

active

050083317

ABSTRACT:
A thermoplastic resin composition consisting essentially of (A) 10-90% by weight of a graft copolymer (A) obtained by polymerizing a mixture of an alkenyl cyanide compound and an aromatic alkenyl compound in the presence of a butadiene rubber latex in which 40-100% by weight of butadiene rubber particles (A-1) having an average particle diameter of at least 1,300 .ANG. but less than 2,100 .ANG., 0-60% by weight of butadiene rubber particles (A-2) having an average particle diameter of 2,100 .ANG. or more and 0-20% by weight of butadiene rubber particles (A-3) having an average particle diameter other than the average particle diameters of the particles (A-1) and (A-2) are dispersed, provided that the alkenyl cyanide compound content in the resin component of the graft copolymer (A) is at least 10% by weight but less than 30% by weight, and (B) 90-10% by weight of a copolymer of an alkenyl cyanide compound with an aromatic alkenyl compound having an alkenyl cyanide compound content of 30-40% by weight, the proportion of the butadiene rubber component in the composition being 5-30% by weight. Said thermoplastic resin composition is excellent in surface appearance of molded article, shows an improved ejection whiteining during molding, and a high gloss of molded article.

REFERENCES:
patent: 3442979 (1969-05-01), Ott et al.
patent: 4104328 (1978-08-01), Swoboda et al.

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