Patent ID: 7300981

Claim:
A composition suitable for an abrasion resistant article comprising: (a) from 10 to 60 phr of a terpolymer of C 4 to C 7 isoolefin derived units, p-alkylstyrene derived units and p-bromomethylstyrene derived units; (b) from 5 to 80 phr of at least one elastomer selected from natural rubbers, polyisoprene rubber, styrene-butadiene rubber, polybutadiene rubber, isoprene-butadiene rubber, styrene-isoprene-butadiene rubber, butyl rubber, halogenated butyl rubber, butadiene-acrylonitrile-styrene rubber, and mixtures thereof; (c) at least one filler; and (d) from 0.1 to 3 phr of at least one thiourea selected from the group of structures represented by: wherein R 1 , R 2 , R 3 , and R 4 can be the same or different, and are radicals selected from hydrogen, methyl, ethyl, linear C 3 to C 20 alkyl, branched C 3 to C 20 alkyl, vinyl, linear C 3 to C 20 alkenyl, branched C 3 to C 20 alkenyl, substituted linear C 3 to C 20 alkyl, and substituted branched C 3 to C 20 alkyl.