Aromatic monovinyl resin composition

Details Aromatic monovinyl resin composition Aromatic monovinyl resin composition

2005-05-10

2005-05-10

Sanders, Kriellion A. (Department: 1714)

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C521S055000

Reexamination Certificate

active

06890978

ABSTRACT:
An aromatic monovinyl resin composition comprising (a) a polymer comprising an aromatic monovinyl monomer and having a weight average molecular weight of 150,000-700,000 and (b) a 3-arylbenzofuranone, the amount of the 3-arylbenzofuranone being 0.006-0.5% by weight based on the weight of the polymer and the residual amount of the aromatic monovinyl monomer in the aromatic monovinyl resin composition being not more than 100 ppm. According to the present invention, it becomes possible to provide an aromatic monovinyl resin composition which is excellent in heat stability, gives molded products of good color tone, develops little odor and is excellent in moldability.

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