Hindered amines based on various 2,2,6,-tetra-alkylated nitrogen-containing heterocyclic moieties wherein the hindered nitrogen atom on the ring is substituted with O-acyl, O-carbamoyl or O-carbonate substituents and the 4-position of the ring is substituted with a variety of groups, are effective as light stabilizers in diverse substrate systems. Some of them are new compounds.
基于各种 2,2,6,-四烷基化含氮杂环分子的受阻胺,其中环上的受阻氮原子被 O-酰基、O-
氨基甲酰基或 O-
碳酸酯取代,环的 4 位被各种基团取代,可在各种底物体系中有效地用作
光稳定剂。其中一些是新化合物。