Expandable styrene polymers

Details Expandable styrene polymers Expandable styrene polymers

C - Chemistry, Metallurgy

08

J

C08J 9/16 (2006.01) C08J 9/18 (2006.01) C08J 9/232 (2006.01)

Patent

CA 2148990

The invention relates to expandable styrene polymers for elastic polystyrene foams, comprising a) from 75 to 98% by weight of polystyrene and/or a styrene co- polymer containing at least 50% by weight of copolymerized styrene, b) from 2 to 25% by weight of at least one styrene-soluble elas- tomer, c) from 1 to 15% by weight, based on the sum of a) and b), of a low-boiling blowing agent, and, if desired, d) conventional additives in effective amounts, where the unfoamed beads have a structure in which the elastomer phase is dispersed in the polystyrene phase in the form of cell particles, and to foams and foam moldings produced therefrom.

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