Expandable styrene polymers of high heat resistance

Details Expandable styrene polymers of high heat resistance Expandable styrene polymers of high heat resistance

C - Chemistry, Metallurgy

08

F

C08F 212/08 (2006.01) C08J 9/12 (2006.01) C08J 9/16 (2006.01) C08L 25/04 (2006.01) C08L 25/08 (2006.01)

Patent

CA 2136649

2136649 9324561 PCTABS00028 Expandable styrene polymers containing a) 0 to 90 % wt. of a styrene polymer different from b) or a styrene copolymer with at least 50 % wt. monopolymerised styrene, b) 10 to 100 % wt. of a styrene/methacrylamide copolymer consisting to the extent of 0.5 to 50 % wt. of at least one monopolymerised N-substituted methacrylamide of general formula (I) in which R1 and R2 are the same or different and are hydrogen, C1 to C15 alkyl, C6 to C16 cycloalkyl or C6 to C20 aryl, and in the case of constitutents R1 and R2 with at least 2 carbon atoms, at least 2 carbon atoms may be cross-linked via hetero atoms, and c) 1 to 15 % wt., related to the sum of a) and b), or an aliphatic C3 to C9 hydrocarbon and/or carbon dioxide as the foaming agent.

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