申请人:Ciba-Geigy S.p.A.
公开号:US04501837A1
公开(公告)日:1985-02-26
The invention relates to new piperidine compounds which act as light stabilisers, heat stabilisers and oxidation stabilisers for synthetic polymers, in particular for hydrocarbon polymers. The compounds are piperidinol carbamates of the formula: ##STR1## in which R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7 and A have the meanings defined in the description and y is an integer from 1 to 4. In particular, A represents a monovalent to tetravalent radical, always bonded to the carboxy-piperidine radicals via nitrogen atoms.
本发明涉及新的哌啶化合物,其作为合成聚合物的光稳定剂、热稳定剂和氧化稳定剂,特别是对碳氢聚合物。该化合物是公式的哌啶醇氨基甲酸酯: ##STR1## 其中R.sub.1,R.sub.2,R.sub.3,R.sub.4,R.sub.5,R.sub.6,R.sub.7和A在说明中定义其含义,y是1到4的整数。特别地,A表示一价到四价的基团,始终通过氮原子与羧基哌啶基团结合。