Patent ID: 7226962

Claim:
A thermoplastic elastomer composition comprising a blend of: a) at least one thermoplastic polymer; and b) dispersed therein a mixture of from 10 to 90 wt % based on the total polymer content of the composition of a halogenated copolymer of a C 4 to C 7 isomonoolefin and a para-alkylstyrene, and silica or clay filler which has been contacted with at least one aminosilane having at least one C 1 to C 4 alkoxy group and at least one primary, secondary or tertiary amine group, the filler present in the composition at a level of from 0.1 to 100 parts by weight per 100 parts by weight of the copolymer; said composition further comprising a general purpose rubber selected from the group consisting of butyl rubber, styrene-butadiene rubber, butadiene rubber, polyisoprene, halogenated butyl rubber, natural rubber, nitrile rubber, neoprene rubber, silicon rubber, polyurethane elastomers, and blends thereof.