Polymers, both natural and synthetic, are stabilized against the deterioration resulting from heat and/or light by the incorporation of certain 2,2,6,6-tetra-substituted-4-piperidinol derivatives which additionally have an alkyl, alkenyl, alkynyl or aralkyl substituent at one or both of the 3- and 5- positions.
天然和合成聚合物都可以通过加入某些2,2,6,6-四取代-4-
哌啶醇衍
生物来稳定其耐热和/或耐光性能,其中这些衍
生物还具有3-和5-位置中的一个或两个烷基、烯基、炔基或芳基取代基。