| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rubber composition capable of highly balancing abrasion resistance, chevron-cut resistance, chipping resistance, heat build-up resistance and productivity. <P>SOLUTION: The rubber composition is obtained by compounding (C) 0.5-2 pts.mass of an organic thiosulfate compound which is represented by formula (I): M<SB>1/p</SB>O<SB>3</SB>S-S-(CH<SB>2</SB>)<SB>n</SB>-S-SO<SB>3</SB>M<SB>1/p</SB>[wherein n is an integer of 3-10; M is a metal selected from the group consisting of lithium, potassium, sodium, magnesium, calcium, barium, zinc, nickel and cobalt; p is a valence of the metal] and in which a crystal water may be contained, based on 100 pts.mass of a rubber component comprising (A) 60-98 mass% of a natural rubber to which a viscosity stabilizer is added, and (B) 2-20 mass% of a polymer of a conjugated diene compound, having 1×10<SP>4</SP>-10×10<SP>4</SP>of a weight average molecular weight (Mw) and ≥70% of a trans-1, 4 bond content. <P>COPYRIGHT: (C)2011,JPO&INPIT |
