申请人:OTSUKA CHEMICAL CO., LTD.
公开号:US20170137604A1
公开(公告)日:2017-05-18
Provided is a rubber composition that has better weather resistance than conventional rubber compositions and can inhibit rubber article surface discoloration. The rubber composition contains at least one rubber component selected from natural rubber and diene-based synthetic rubbers and, blended therewith, at least one bisphenyldiamine compound represented by formula (I). In formula (I), R
1
, R
2
, R
5
, and R
6
each represent, independently of one another, a hydrogen atom, an alkyl group having a carbon number of 1-10, or a phenyl group, but R
1
and R
2
do not both simultaneously represent a hydrogen atom and R
5
and R
6
do not both simultaneously represent a hydrogen atom, R
3
and R
4
each represent, independently of one another, an alkyl group having a carbon number of 1-8 or an aralkyl group, A represents an alkylene group having a carbon number of 1-12, and l, m, and n each represent an integer of 0 or 1.
提供的是一种具有比传统橡胶组合物更好的耐候性并且可以抑制橡胶制品表面变色的橡胶组合物。该橡胶组合物包含至少一种选自天然橡胶和二烯基合成橡胶的橡胶组分,并且与之混合,至少一种由式(I)表示的双苯胺化合物。在式(I)中,R1、R2、R5和R6分别独立地表示氢原子、碳数为1-10的烷基或苯基,但R1和R2不能同时表示氢原子,R5和R6也不能同时表示氢原子,R3和R4分别独立地表示碳数为1-8的烷基或芳基,A表示碳数为1-12的烷基,l、m和n分别表示0或1的整数。