| abstract |
PROBLEM TO BE SOLVED: To suppress the gelation of a polymer by a silane coupling agent in high-temperature kneading at 150 ° C. or more, and to efficiently react silica with the silane coupling agent without lowering workability. The present invention further provides a rubber composition which improves heat generation and abrasion resistance. SOLUTION: Natural rubber and / or diene-based synthetic rubber 10 0 parts by weight, silica 10 to 85 parts by weight, the following general formula, Wherein n is an integer of 1 to 3, m is an integer of 1 to 9, and l is an integer of 1 or more and has a distribution. l -distribution is given by the following formula, (S 1 + S 2 + S 3 + S 4 ) / (S 5 + S 6 + S 7 + S 8 + S 9 ) ≧ 1 to 20% by weight of the silane coupling agent satisfying the relationship represented by 0.85 with respect to the amount of silica. And 1 to 15% by weight of the specific amine compound based on the amount of silica It is a rubber composition that is compounded. |