Rubber composition and pneumatic tire therewith

摘要

The present invention is directed to a rubber composition and to a pneumatic tire. The rubber composition comprises
from 50 to 100 parts by weight, per 100 parts by weight of elastomer, of a vinylpyridine-styrene-butadiene (VPSBR) elastomer comprising units derived from monomers comprising styrene, 1,3- butadiene, and vinylpyridine monomers which have the structural formula:
wherein R 1 represents a hydrogen atom or a straight chain or branched alkyl group containing 1 to 4 carbon atoms, wherein the VPSBR comprises from 0.1 to 8 percent by weight of vinylpyridine monomer; from 0 to 50 phr of at least one additional diene-based elastomer; from 5 to 15 phr of an at least partially exfoliated clay; and from 1 to 40 phr of a polyoctenamer.