Patent ID: 8618198
Filing Date: 2013-12-31
Classification: B60C,C08K,C08L

Abstract:
1. A run-flat tire comprising a sidewall reinforcing layer formed from a rubber composition for a sidewall reinforcing layer, comprising: a rubber component containing a tin-modified butadiene rubber (a) and/or a butadiene rubber (b) modified by a compound represented by the following formula (1): wherein R 1 , R 2 , and R 3 may be the same as or different from one another and each represent an alkyl group, an alkoxy group, a silyloxy group, an acetal group, a carboxyl group, a mercapto group, or a derivative thereof; R 4 and R 5 may be the same as or different from each other and each represent a hydrogen atom or an alkyl group; and n denotes an integer, an alkylphenol-sulfur chloride condensate, a stearic acid and a zinc oxide, wherein the amount of the alkylphenol-sulfur chloride condensate is 3 to 10 parts, the amount of the stearic acid is 2.5 to 5 parts and the amount of the zinc oxide is 5 to 10 parts by mass per 100 parts by mass of the rubber component.