Patent ID: 8367766
Filing Date: 2013-02-05
Classification: B60C,C08K,C08L,Y10T

Abstract:
1. A rubber composition comprising (A) a copolymer rubber comprised of repeat units derived from (B) 1 to 20 parts by weight, per 100 parts by weight of rubber (phr) of a non-sulfur containing organosilicon compound of the formula: in which Z is selected from the group consisting of where R 2 is an alkyl group of 1 to 4 carbon atoms, cyclohexyl or phenyl; R 3 is alkoxy of 1 to 20 carbon atoms, or cycloalkoxy of 5 to 8 carbon atoms; Alk is a divalent hydrocarbon of 1 to 18 carbon atoms and n is an integer of 1 to 2; and (C) from 20 to 120 phr of silica, and wherein said rubber composition comprises at least one additional rubber selected from the group consisting of cis 1,4-polyisoprene rubber, cis 1,4-polybutadiene, high vinyl polybutadiene, styrene/butadiene copolymers, styrene/isoprene/butadiene copolymers, 3,4-polyisoprene, isoprene/butadiene copolymers and isoprene/styrene copolymers.