申请人:Elf Atochem North America, Inc.
公开号:US05338853A1
公开(公告)日:1994-08-16
N-(2,2,6,6-tetraalkyl-4-piperidinyl)amic acid hydrazides contain a light stabilizing group, a heat stabilizing group and an amic acid hydrazide functionality in the same molecule. The amic acid hydrazide functionality in the compounds enhances the photooxidative stabilizing properties of the hindered amine groups and contributes thermal and oxidative stabilizing and metal complexing properties to the compounds. The novel compounds are excellent light stabilizers for polyolefins, have low volatility and are not readily lost from polymeric systems via volatilization, migration or extraction.
N-(2,2,6,6-四烷基-4-哌啶基)羧酰肼化合物包含一个光稳定基团、一个热稳定基团和一个羧酰肼官能团在同一个分子中。该化合物中的羧酰肼官能团增强了受阻胺基团的光氧化稳定性,并为该化合物提供了热稳定、氧化稳定和金属络合性能。这些新型化合物是聚烯烃的优良光稳定剂,具有低挥发性,并不容易通过挥发、迁移或萃取从聚合物体系中失去。