| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a rubber composition for a tire tread excellent in wet performance and low rolling resistance when making it a tire and excellent in scorch resistance.SOLUTION: There is provided a rubber composition for a tire tread containing a rubber component containing a conjugated diene rubber (P) of 20 mass% or more, silica (Q) and a silane coupling agent (R), the conjugated diene rubber (P) contains a specific structure (p) of 5 mass% or more, the silane coupling agent (R) is a polysiloxane represented by a specific average composition formula, the content of the silane coupling agent (R) is 1.0 to 20 mass% based on the content of the silica (Q), and the content of the silica (Q) is 60 to 200 pts.mass based on 100 pts.mass of the rubber component.</p> |
