| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a rubber composition for a tread, which has good processability and can improve wet grip performance, low fuel consumption and wear resistance in a good balance, and to provide a pneumatic tire using the composition.SOLUTION: The rubber composition for a tread comprises: an emulsion-polymerized rubber having an acetone extract of 2.5 mass% or less determined by an acetone extraction method; carbon black; and silica. Otherwise, the rubber composition for a tread comprises: an emulsion-polymerized rubber having a soap content and an organic acid content, each of 2.5 mass% or less; carbon black; and silica.</p> |
