Expandable styrene polymer of high oil resistance and preparatio

Details Expandable styrene polymer of high oil resistance and preparatio Expandable styrene polymer of high oil resistance and preparatio

1989-12-18

1991-02-05

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 59, 521 60, 521139, C08J 918, C08J 920

Patent

active

049905406

ABSTRACT:
Expandable styrene polymers formed from 50 to 83% by weight of polystyrene and from 17 to 50% by weight of styrene-soluble styreneacrylonitrile copolymer having a total acrylonitrile content of not less than 5% by weight, containing from 3 to 10% by weight of a C.sub.3 -C.sub.6 -hydrocarbon with or without customary additives, are notable for high oil resistance and can be prepared by suspension polymerization of a solution of the styrene-acrylonitrile copolymer in styrene.

REFERENCES:
patent: 4497912 (1985-02-01), Reese et al.
patent: 4663357 (1987-05-01), Meyer et al.
patent: 4812484 (1989-03-01), Endo et al.

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