申请人:ELF ATOCHEM NORTH AMERICA, INC.
公开号:EP0434080A1
公开(公告)日:1991-06-26
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)胺基酸酰肼在同一分子中含有光稳定基团、热稳定基团和胺基酸酰肼官能团。化合物中的胺酸酰肼官能团增强了受阻胺基团的光氧化稳定特性,并使化合物具有热稳定、氧化稳定和金属络合特性。这些新型化合物是聚烯烃的优良光稳定剂,挥发性低,不易通过挥发、迁移或萃取从聚合物体系中流失。