| 摘要 |
PROBLEM TO BE SOLVED: To provide a rubber composition for side walls having a higher content of source materials deriving from non-petroleum resources to give consideration to resource saving and environmental protection, and having excellent durability and anti-crack-growing property, and a pneumatic tire provided with a side wall rubber consisting of the rubber composition. SOLUTION: The rubber composition for side walls contains 100 parts by mass of a first rubber component consisting of 30-70 mass% of natural rubber and 70-30 mass% of epoxidized natural rubber, 20-60 parts by mass of silica, and 3-60 parts by mass of a second rubber component consisting of liquid rubber. A method of producing the same and the pneumatic tire provided with a side wall rubber consisting of the rubber composition are also provided. COPYRIGHT: (C)2009,JPO&INPIT
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