| 摘要 |
A process for producing a vulcanized rubber composition that includes S-(3-aminopropyl)thiosulfuric acid, a rubber component, a filler, a sulfur component, and a vulcanization accelerator, the process comprising the following Steps (A), (B) and (C); (A): a step of kneading S-(3-aminopropyl)thiosulfuric acid having a median diameter (50% D) of 10 mum to 100 mum, a rubber component and a filler, (B): a step of kneading the kneaded mixture obtained in Step (A), a sulfur component and a vulcanization accelerator, and (C): a step of subjecting the kneaded mixture obtained in Step (B) to thermal treatment.
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