Elastomeric copolymer of aromatic vinyl compounds and butadiene

Details Elastomeric copolymer of aromatic vinyl compounds and butadiene Elastomeric copolymer of aromatic vinyl compounds and butadiene

C - Chemistry, Metallurgy

08

C

402/453

C08C 19/44 (2006.01) C08F 8/42 (2006.01) C08F 230/10 (2006.01)

Patent

CA 1260198

Abstract of the Disclosure An elastomeric copolymer of an aromatic vinyl compound and butadiene prepared by a solution polymeri- zation method, which has a glass transition temperature of not less than -50°C and contains polymer chains modified with a trifunctional or tetrafunctional coupling agent, and which contains not less than 3 % by weight to less than 23 % by weight, based on the whole polymer chains, of polymer chains having a molecular weight of at least 5 times a molecular weight corresponding to a peak appearing on the low molecular weight side of a high performance liquid chromatogram of the elastomeric copolymer. The elastomeric copolymer has an excellent processability and shows a low rolling resistance and a high wet grip characteristic when used as a rubber component in tires.

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