SIDEWALL INSERT RUBBER COMPOSITION FOR RUN-FLAT TIRE AND TIRE MANUFACTURED BY USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide: a sidewall insert rubber composition for a run-flat tire with excellent processability in an unvulcanized state of the tire, high resistance to heat generation, to fatigue and to cracking, excellent run-flat performance and excellent low fuel consumption performance; and a tire manufactured by using the same.SOLUTION: A sidewall insert rubber composition for a run-flat tire includes: 100 pts.wt. of raw material rubber including 30 to 60 pts.wt. of natural rubber and 40 to 70 pts.wt. of butadiene rubber; 40 to 70 pts.wt. of carbon black; 3 to 10 pts.wt. of a novolac resin; and 0.2 to 2 pts.wt. of a methylene donor.