| abstract |
[PROBLEMS] To provide a rubber composition having a good adhesiveness and a small change in hardness upon environmental aging and thermal aging without causing a decrease in wear resistance, and a rubber composition for a tire comprising the rubber composition, and A pneumatic tire using the rubber composition for a tire is provided. A rubber composition comprising a rubber component, an alkyd resin, and a biodegradable aliphatic polyester, a tire rubber composition comprising the rubber composition, and a pneumatic tire using the tire rubber composition provide. [Selection] Figure 1 |