RUBBER COMPOSITION

摘要

PROBLEM TO BE SOLVED: To obtain a rubber composition excellent in wet skid resistance and abrasion resistance by control of tanδbalance of vulcanized rubber. SOLUTION: This rubber composition is obtained by compounding 100 pts.wt. total amount of 20-80 pts.wt. at least one kind of raw material rubber having -110 deg.C to -15 deg.C average glass transition temperature TgA and 80-20 pts.wt. at least one kind of raw material rubber in which average glass transition temperature TgB is represented by the expression; TgB>=TgA+10 deg.C with 40-120 pts.wt. surface-treated carbon black to which 0.1-20 wt.% silica or modified silica is attached.