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1. (WO2018199280) CROSSLINKED RUBBER AND TIRE

Pub. No.:    WO/2018/199280    International Application No.:    PCT/JP2018/017153
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Sat Apr 28 01:59:59 CEST 2018
IPC: C08L 9/00
B60C 1/00
B60C 11/00
B60C 13/00
C08F 36/06
C08K 3/36
Applicants: JSR CORPORATION
JSR株式会社
Inventors: ADACHI, Takumi
足立 拓海
SANO, Takuya
佐野 拓哉
FUKUMOTO, Takato
福本 天斗
KOBAYASHI, Kunpei
小林 薫平
UEDA, Jiro
上田 二朗
Title: CROSSLINKED RUBBER AND TIRE
Abstract:
A crosslinked rubber obtained by crosslinking a rubber composition, wherein the rubber composition contains: (A) a conjugated diene polymer having a weight-average molecular weight of 1.0 x 105 to 2.0 x 106 in terms of polystyrene by gel permeation chromatography, the hydrogenation rate of structural units derived from butadiene being 60-90%; (B) a hydrogenated or un-hydrogenated conjugated diene polymer having structural units derived from butadiene and having a different hydrogenation rate than does component (A); (C) silica; and (D) a crosslinking agent, the co-vulcanization parameter represented by numerical formula (1) in the rubber composition being 0.85 or higher. (1): Co-vulcanization parameter = X/(Y × α + Z × β)