Expandable styrene polymers and their preparation

Details Expandable styrene polymers and their preparation Expandable styrene polymers and their preparation

C - Chemistry, Metallurgy

08

J

403/66

C08J 9/06 (2006.01) C08F 257/02 (2006.01) C08J 9/18 (2006.01) C08J 9/20 (2006.01) C08L 51/00 (2006.01)

Patent

CA 2011530

- 8 - O.Z. 0050/40645 Abstract of the Disclosure: Expandable styrene polymers of from 95 to 99.5% by weight of polystyrene and from 0.15 to 5% by weight of a styrene-soluble styrene/acrylo- nitrile copolymer having a total content of not less than 0.15% by weight of acrylonitrile, which contain from 3 to 10~ by weight of a C3-C8-hydrocarbon and may contain con- ventional additives, give foams which do not shrink. The said styrene polymers can be prepared by suspension poly- merization of a solution of the styrene/acrylonitrile copolymer in styrene.

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