Styrenic resin composition and injection- and extrusion-molded a

Details Styrenic resin composition and injection- and extrusion-molded a Styrenic resin composition and injection- and extrusion-molded a

1994-11-04

1996-07-09

Cain, Edward J.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

523220, 523221, 524423, 524451, 524493, 524497, 524505, C08K 332

Patent

active

055345808

ABSTRACT:
Disclosed are a styrenic resin composition comprising (a) a styrenic resin having a weight average molecular weight of 100,000 to 2,000,000 and (b) a finely divided particulate inorganic or organic substance, the inorganic substance having a refractive index of 1.5-2.0 and an average particle diameter of 0.1-20 .mu.m, and the organic substance having a refractive index of 1.5-2.0 and an average particle diameter of 0.1-20 .mu.m and not having a glass transition temperature in a temperature range of 90.degree. C. or below, said particulate inorganic or organic substance accounting for 0.002 to 1 weight % based on the styrenic resin composition, as well as an injection-molded article prepared by molding the styrenic resin composition, and an extrusion-molded article comprising the styrenic resin composition in an amount of at least 50 weight %.

REFERENCES:
patent: 3873645 (1975-03-01), Muirhead et al.
patent: 3980611 (1976-09-01), Anderson et al.
patent: 4073764 (1978-02-01), Hemmerich et al.
patent: 4304881 (1981-12-01), Aoki et al.
patent: 4357170 (1982-11-01), Brand
patent: 4361675 (1982-11-01), Tan et al.
patent: 4639394 (1987-01-01), Das et al.
patent: 5322869 (1994-06-01), Yamasaki et al.

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