申请人:Sumitomo Rubber Industries, Ltd.
公开号:US20220411606A1
公开(公告)日:2022-12-29
An object of the present disclosure is to provide a rubber composition from which a crosslinked rubber molded product having good softness and excellent resilience performance can be obtained. The present disclosure provides a rubber composition containing (a) a base rubber, (b) a co-crosslinking agent, (c) a crosslinking initiator, and (d) a salt of a benzothiazole derivative, wherein (d) the salt of the benzothiazole derivative includes a compound represented by the formula (1) in which a sulfur atom S
2
constituting a thiocarbonyl group has a Mulliken charge of −0.190 or more.
[In the formula (1), R
1
to R
4
are identical to or different from each other, and represent an electron-withdrawing group or a hydrogen atom, S
1
and S
2
represent a sulfur atom, X represents a cation component, n is an integer ranging from 1 to 4, and at least one of R
1
to R
4
bonding to the identical benzene ring is an electron-withdrawing group when n is 2 or more.]