Patent ID: 6630535
Filing Date: 2003-10-07
Classification: C08L

Abstract:
A composition comprising:an elastomer; a filler; and a comb polymer, said comb polymer comprising a backbone and a plurality of side chains, said backbone having a length greater than or equal to the entanglement length, said side chains having a length greater than about 33% of the entanglement length, said side chains having a Tg of less than about âˆ’5Â° C., said backbone including at least one side chain per entanglement length, and said comb polymer having a Tg of less than âˆ’5Â° C., where the comb polymer is selected from the group consisting of poly(butylmethacrylate-g-poly(butadiene)), poly(butylmethacrylate-g-poly(styrene-co-butadiene)), poly(butylmethacrylate-g-poly(isoprene)), poly(butylmethacrylate-g-poly(styrene-co-isoprene-co-butadiene)), poly((chloromethylstyrene-co-butadiene)-g-poly(butadiene)), poly((chloromethylstyrene-co-butadiene)-g-poly(styrene-co-butadiene)), and poly((chloromethylstyrene-co-butadiene)-g-poly(styrene-co-isoprene-butadiene)).