Novel compounds containing piperidine groups, of the general formula ##STR1## in which R.sub.1 is hydrogen, O--, cyanomethyl, C.sub.1 -C.sub.12 -alkyl, C.sub.3 -C.sub.12 -alkenyl or -alkynyl, C.sub.7 -C.sub.12 -aralkyl or C.sub.1 -C.sub.12 -acyl, m is an integer from 1 to 12, n is an integer from 1 to 3 and A is an amine radical, are suitable as light stabilizers, heat stabilizers and oxidation stabilizers for synthetic polymers. Processes for their preparation are also described.
含有
哌啶基团的新型化合物,其通式为##STR1## 其中R.sub.1为氢,O-,
氰甲基,C.sub.1-C.sub.12-烷基,C.sub.3-C.sub.12-烯基或-炔基,C.sub.7-C.sub.12-芳基烷基或C.sub.1-C.sub.12-酰基,m为1至12的整数,n为1至3的整数,A为胺基基团,适用于合成聚合物的
光稳定剂、热稳定剂和氧化稳定剂。还描述了它们的制备过程。