Patent ID: 8436105

Claim:
A thermally curable composition, comprising, based on the total composition a) 5 to 90 wt % of an olefinic double bond-containing copolymer based on diene and on an aromatic substituted olefin, wherein the copolymer is liquid or pasty at 22° C. and has a glass transition temperature, measured by a DSC method, between −30° C. and +15° C., and wherein the copolymer comprises a diene fraction and the diene fraction has a vinyl fraction of at least 20 mol %, b) a vulcanization system selected from the group consisting of: b1) sulfur and one or more accelerator(s), b2) peroxidic or disulfidic vulcanization systems b3) quinones, quinone dioximes or dinitrosobenzene, and c) a blowing agent.