METHOD FOR USING S-(3-AMINOPROPYL)THIOSULFURIC ACID AND/OR METAL SALT THEREOF

WIPO Patent Application WO/2012/002517

A1

Disclosed is a method for using the S-(3-aminopropyl)thiosulfuric acid and/or metal salt thereof which is to be added to a rubber ingredient that is a raw material for a vulcanized rubber composition. The method is characterized by comprising a pre-kneading step (A) in which a rubber ingredient, a filler, and S-(3-aminopropyl)thiosulfuric acid and/or a metal salt thereof are kneaded, a post-kneading step (B) in which the mixture (A) obtained in the pre-kneading step (A), a sulfur ingredient, and a vulcanization accelerator are kneaded, the accelerator being used in a larger amount by weight than the sulfur ingredient, and a heat treatment step (C) in which the mixture (B) obtained in the post-kneading step (B) is heat-treated to obtain a vulcanized rubber composition. The method is further characterized by imparting durability to the vulcanized rubber composition.

UEKITA, Yasuo (2-11-5, Najiosakuradai Nishinomiya-sh, Hyogo 46, 〒6691146, JP)
上北　泰生 (〒46 兵庫県西宮市名塩さくら台２－１１－５ Hyogo, 〒6691146, JP)
TAKEUCHI, Kenichi (2-19-13, Midorigaoka Toyonaka-sh, Osaka 02, 〒5600002, JP)

JP2011/065126

January 05, 2012

June 24, 2011

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SUMITOMO CHEMICAL COMPANY, LIMITED (27-1, Shinkawa 2-chome Chuo-k, Tokyo 60, 〒1048260, JP)
住友化学株式会社 (〒60 東京都中央区新川二丁目２７番１号 Tokyo, 〒1048260, JP)
UEKITA, Yasuo (2-11-5, Najiosakuradai Nishinomiya-sh, Hyogo 46, 〒6691146, JP)
上北　泰生 (〒46 兵庫県西宮市名塩さくら台２－１１－５ Hyogo, 〒6691146, JP)

C08J3/20; B60C1/00; C08J3/24; C08K3/00; C08K5/41; C08L21/00

NAKAYAMA, Tohru et al. (Limited 5-33, Kitahama 4-chome, Chuo-ku, Osaka-sh, Osaka 50, 〒5418550, JP)

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