Styrene copolymers, polystyrene compositions, and injection-mold

Details Styrene copolymers, polystyrene compositions, and injection-mold Styrene copolymers, polystyrene compositions, and injection-mold

1995-04-11

1998-01-13

Teskin, Fred

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526228, 526335, 526336, 526347, 524577, C08F23620

Patent

active

057081123

ABSTRACT:
Disclosed are a styrene copolymer having a weight average molecular weight of about 200,000 to 2,000,000, having 1 to 20 branching points in the Z-average molecular weight, and having a methyl ethyl ketone/methanol mixture-insoluble matter content of not more than 5% by weight and a methanol-soluble matter content of not more than 5% by weight; processes for preparing the styrene copolymer; a polystyrene resin composition containing the styrene copolymer; and injection-molded article prepared by injection-molding the polystyrene resin composition.

REFERENCES:
patent: 3726848 (1973-04-01), Squire et al.
patent: 4125696 (1978-11-01), Kamath
patent: 4129703 (1978-12-01), Kamath et al.
patent: 5059667 (1991-10-01), Nakamura

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