Patent ID: 8299184
Filing Date: 2012-10-30
Classification: B60C,C08K,C08L,Y10T

Abstract:
1. A rubber composition for tire sidewall which comprises a rubber component and 10 to 70 parts by mass of carbon black having a specific surface area by nitrogen adsorption of 20 to 100 m 2 /g per 100 parts by mass of the rubber component and does not comprise a softener having an aniline point of 50° C. or lower, the rubber component comprising polybutadiene rubber having a content of a cis-1,4-bond of 92% or greater and a content of a vinyl bond of 0.71% or smaller, and natural rubber and/or at least one other synthetic diene rubber, wherein the rubber composition comprises at least one softener selected from the group consisting of process oils which have a kinematic viscosity (40° C.) of 15 to 35 mm