申请人:Otsuka Chemical Co., Ltd.
公开号:EP3845591A1
公开(公告)日:2021-07-07
The present invention provides a rubber composition that can exhibit excellent low heat build-up, tear strength, and durability; and a rubber composition having excellent low heat build-up, tear strength, and durability, by incorporating a compound represented by the following formula (1) or (2), or a salt of the compound.
In the formula (1), R1, R2, R3, and R4 are the same or different, and each represents a hydrogen atom, an alkyl group, or the like; R3 and R4 may be taken together to form an alkylidene group, and any two of R2, R3, and R4 may be taken together to form an alkylene group; and each of these groups may have one or more substituents.
In the formula (2), R5, R7, and R8 are the same or different, and each represents a hydrogen atom or an amino group; and R6 represents an alkyl group or an aralkyl group; and each of these groups may have one or more substituents.
本发明通过加入下式(1)或(2)所代表的化合物或该化合物的盐,提供了一种可表现出优异的低热积聚性、撕裂强度和耐久性的橡胶组合物;以及一种具有优异的低热积聚性、撕裂强度和耐久性的橡胶组合物。
在式 (1) 中,R1、R2、R3 和 R4 相同或不同,且各自代表氢原子、烷基或类似物;R3 和 R4 可结合在一起形成亚烷基,R2、R3 和 R4 中的任意两个可结合在一起形成亚烷基;这些基团中的每个基团可具有一个或多个取代基。
在式 (2) 中,R5、R7 和 R8 相同或不同,且各自代表氢原子或氨基;R6 代表烷基或芳烷基;这些基团中的每一个都可以有一个或多个取代基。