Patent ID: 8695665
Filing Date: 2014-04-15
Classification: B60C,Y10T

Abstract:
1. A pneumatic tire having a composite consisting of a combination of outer rubber sidewall layer and chafer component, where said rubber sidewall layer is integral with and extends radially outward from said chafer component, wherein each of said sidewall layer and chafer component are rubber compositions containing specialized cis 1,4-polybutadiene elastomer(s) comprised of, based on parts by weight per 100 parts by weight of rubber (phr): (A) 100 phr of conjugated diene-based elastomers comprised of: (B) rubber reinforcing filler comprised of (C) coupling agent for said precipitated silica, when said precipitated silica is used, having a moiety reactive with hydroxyl groups on said precipitated silica and another different moiety interactive with said elastomer(s); wherein said specialized cis 1,4-polybutadiene elastomers consist of: wherein the specialized cis 1,4-polybutadiene rubber for said sidewall component [and said chafer component] of said composite is: wherein the specialized cis 1,4-polybutadiene rubber for said chafer component of said composite is: