申请人:Chimosa Chimica Organica S.p.A.
公开号:US04369321A1
公开(公告)日:1983-01-18
The invention relates to new piperidine compounds which act as light stabilizers, heat stabilizers and oxidation stabilizers 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.
该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。这些化合物是以下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在描述中有定义,y是1到4之间的整数。特别地,A代表一价到四价基团,始终通过氮原子与羧基哌啶基团结合。