Birch, Stewart, Kolasch & Birch, LLP
Rubber-modified styrenic resin composition
 Rubber-modified styrenic resin compositions of this invention comprise 90 to 30% by weight of rubber-modified styrenic resins (A) containing rubbery polymers dispersed with an average particle diameter of 0.3 to 2.0 .mu.m in the phase of styrenic polymers (C) and 10 to 70% by weight of styrene-(meth)acrylate ester copolymer resins (B) and, in said compositions, the content of (meth)acrylate ester units is 5 to 50% by weight and the toluene-insolubles (% by weight: X) and the rubber component (% by weight: Y) are present at a ratio (X/Y) in the range from 1.2 to 3.5. The compositions excel in appearance, scratch resistance, impact resistance and rigidity and are easy to fabricate. 
Nippon Steel Chemical Co., Ltd.
C C C C C
C08F C08L C08F C08L C08L
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Jing Hui Shigeru Isao Kiichi Yasuji Keiichi
Chen Owada Tanaka Kometani Shichijo Hayashi