| 摘要 |
PROBLEM TO BE SOLVED: To provide a rubber composition for tires, which has improved processability due to excellent silica dispersibility, has excellent low temperature characteristics without deteriorating characteristics such as abrasion resistance, rolling resistance characteristics and the like, and has excellent ice performance especially suitable for studless tires. SOLUTION: This rubber composition for the tires is characterized by comprising 100 pts.wt. of a dienic rubber, 20 to 120 pts.wt. of silica, a silane coupling agent in an amount of 2 to 20 wt.% based on the amount of the silica, 1 to 20 pts.wt. of plant-based granules such as crushed walnut crest, and an organic silane compound represented by general formula (1): SiR<SB>1n</SB>(OR<SB>2</SB>)<SB>4-n</SB>[wherein, R<SB>1</SB>is a 5 to 20C alkyl group, an alkenyl group, a cycloalkenyl group or an aromatic hydrocarbon; R<SB>2</SB>is a 1 to 3C alkyl; (n) is an integer of 0 to 3] in an amount of 20 to 50 wt.% based on the amount of the silane coupling agent instead of the silane coupling agent. COPYRIGHT: (C)2009,JPO&INPIT
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