| 摘要 |
A rubber composition for tire tread is provided to improve the processability in an un-vulcanized state while maintaining control stability, braking ability and wear performance of tire, and to realize a low fuel-efficient efficiency by reducing a rotation resistance. A rubber composition for tire tread comprises a base rubber, silica as the reinforcing filler, and epoxidized polybutadiene having a hydroxyl group at the end of the chemical formula 1. In the chemical formula 1, a is 1-5, b is 1-3, c is 0-3, d is 1-5, and e is an integer of 1-3. The epoxidized polybutadiene of which the end of the chemical formula 1 is a hydroxyl group has the molecular weight of 2,000-30,000 and is included in the amount of 1-20 parts by weight based on 100.0 parts by weight of the base rubber. The rubber composition is mixed in the temperature at 160-180 °C. |
