Process for producing vulcanized rubber composition
AssigneeSumitomo Chemical Company, Limited
InventorsYasuo Uekita, Kenichi Takeuchi, Hironobu Iyama
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Abstract
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 μm to 100 μm, 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.
Claims2
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 μm to 100 μm, 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.
Dependencies are inferred from the claim text.