TIRE TREAD RUBBER COMPOSITION

摘要

PROBLEM TO BE SOLVED: To provide a tire tread rubber composition which improves fatigue failure resistance and maintains elongation at break while allowing it to possess higher hardness (improving irregular wear resistance). SOLUTION: The tire tread rubber composition comprises a diene blend rubber of a natural rubber and a butadiene rubber; a natural rubber and a styrene-butadiene copolymer rubber; or a natural rubber, a butadiene rubber, and a styrene-butadiene rubber and 0.01-0.5 pt.wt. compounding ingredient represented by formula (1) based on 100 pts.wt. rubber in which the compounding amount of each of the butadiene rubber and the styrene-butadiene copolymer rubber or the total compounding amount of the butadiene rubber and the styrene-butadiene rubber in the blend rubber is 20-50 pts.wt. COPYRIGHT: (C)2005,JPO&NCIPI