申请人:Elfatochem North America, Inc.
公开号:US05397821A1
公开(公告)日:1995-03-14
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)酰肼化合物包含光稳定基团、热稳定基团和酰肼基团在同一分子中。化合物中的酰肼基团增强了受阻胺基团的光氧化稳定性,并为化合物提供了热稳定、氧化稳定和金属络合性质。这些新型化合物是聚烯烃的优秀光稳定剂,具有低挥发性,并且不容易通过挥发、迁移或提取从聚合体系中丢失。