Topping for the rubber composition of the case and / or breaker to use in run-flat tires and run-flat tire using the same

摘要

PPROBLEM TO BE SOLVED: To provide a rubber composition for topping a case and/or a breaker used for a run-flat tire capable of obtaining adequate hardness and excellent in low heat build-up property, elongation at break, complex elastic modulus and run-flat durability, and to provide a tire using the same. PSOLUTION: The rubber composition for topping a case and/or a breaker used for a run-flat tire, includes (B) 2-3.5 pts.wt. of sulfur, (C) 2-10 pts.wt. of at least one compound selected from the group consisting of a cresol resin, a resorcinol condensate and a modified resorcinol condensate, and (D) 4-15 pts.wt. of a softening agent, based on (A) 100 pts.wt. of a rubber component. The tire is prepared by using the above rubber composition. PCOPYRIGHT: (C)2009,JPO&INPIT