| 摘要 |
<p>PURPOSE: A rubber composition for tire and a pneumatic tire using the rubber composition are provided to ensure excellent low heat property(tanδ) and strength at break, and good control stability and durability. CONSTITUTION: A rubber composition for tire comprises 100 parts by mass consisting of 10~60 mass % butadiene rubber containing 2.5~20 mass % 1,2-syndiotactic polybutadiene crystals, 5~60 mass % butadiene rubber terminal-modified with a compound represented by chemical formula 1, and 20~75 mass % diene-based rubber; and 5~80 parts by mass silica.</p> |
