| 摘要 |
A process for producing a rubber composition for tire treads which comprises a step of master batch mixing comprising mixing 20 to 150 parts by mass of silica (B), 1 to 30 parts by mass of a silane coupling agent (C) and a compound promoting reaction of silica and a silane coupling agent (D) with 100 parts by mass of a rubber component (A) comprising at least one of natural rubber and synthetic diene-based rubbers; and a step of final mixing comprising mixing a master batch obtained in the step of master batch mixing, a vulcanizing agent and a vulcanization accelerator. The rubber composition obtained in accordance with the above process increases abrasion resistance and also improves processability and productivity in the steps of mixing and extrusion. |
