| 摘要 |
PROBLEM TO BE SOLVED: To provide a rubber composition that includes a high cis isomer content and low vinyl content styrene-butadiene copolymer rubber (SBR) and has excellent wet grip performance, low-temperature performance and deterioration-resistant mechanical strength. SOLUTION: The rubber composition comprises 5 to 95 wt.% of a styrene-butadiene in which the amount of 1,4-cis bond is more than 70 wt.% and that of 1,2-vinyl bond is 0 to 10 wt.%, and 95 to 5 wt.% of other diene rubbers. COPYRIGHT: (C)2006,JPO&NCIPI
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