Diphenylamine derivatives and degradation inhibitors for rubber polymers
申请人:Nippon Zeon Co. Ltd.
公开号:US04298522A1
公开(公告)日:1981-11-03
A diphenylamine derivative of the general formula ##STR1## wherein R represents a hydrogen atom or a methyl group, R.sub.1 and R.sub.2, independently from each other, represent a hydrogen atom, a chlorine atom, a bromine atom, or a hydrocarbon radical having 1 to 12 carbon atoms, and A represents ##STR2## and a degradation inhibitor for rubbery polymers comprising the aforesaid diphenylamine derivative as an active ingredient.