Transparent heat-resistant styrene-base copolymer

Details Transparent heat-resistant styrene-base copolymer Transparent heat-resistant styrene-base copolymer

1991-03-01

1993-03-02

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C08F 2240

Patent

active

051910462

ABSTRACT:
A transparent heat-resistant styrene-base copolymer comprising specific amounts of units derived respectively from (a) a styrene-type monomer, (b) a (meth)acrylonitrile monomer and/or (meth)acrylic ester type monomer and (c) a phenylmaleimide monomer, in which the weight ratio (b)/(c) and the ratio of the weight average molecular weight to the number average molecular weight fall within their respective specific ranges and the amount of the phenylmaleimide-type monomer still remaining in the copolymer is below a certain specific concentration.

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Chemical Abstracts, 93:240248a.
English-Language Abstract WPI Acc. No. 80-66740C/38.
Chemical Abstracts, 103:5488g.
Chemical Abstracts, 100:104081b.

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