Patent ID: 6525133
Filing Date: 2003-02-25
Classification: B29B,B60C,C08K

Abstract:
A pneumatic tire having an outer circumferential tread where said tread is comprised of, based upon 100 parts by weight diene hydrocarbon based rubber (phr),(A) at least one said diene hydrocarbon based rubber; and (B) from about 1 to about 40 phr of a liquid alpha-methyl styrene oligomer; (C) about 3 to about 10 phr of reinforcing filler selected from at least one of carbon black, precipitated silica and silica modified carbon black; and (D) a coupling agent for said precipitated silica and/or silica modified carbon black having a moiety reactive with said precipitated silica and silica modified carbon black and another moiety interactive with at least one of said diene-based elastomers; wherein said liquid alpha-methyl styrene oligomer is comprised of the general formula (I):