| abstract |
The present invention is a method for manufacturing a rubber composition that contains: a rubber component (A) comprising at least one type of rubber selected from among natural rubbers and synthetic diene rubbers; a filler containing an inorganic filler (B); a silane coupling agent (C); and at least one vulcanization accelerator (D) selected from among thiurams, dithiocarbamates, thioureas, and xanthates. Said manufacturing method is characterized in that: said rubber composition is kneaded in multiple stages; the rubber component (A), some or all of the inorganic filler (B), some or all of the silane coupling agent (C), and the vulcanization accelerator(s) (D) are kneaded together in the first kneading stage. This method for manufacturing a rubber composition is capable of further increasing the coupling activity of the silane coupling agent, suitably obtaining a rubber composition that generates less heat. |