Hydrogen peroxide catalyzed process for the preparation of sterically hindered N-hydrocarbyloxyamines
申请人:Galbo P. James
公开号:US20050014948A1
公开(公告)日:2005-01-20
Sterically hindered N-hydrocarbyloxyamines are prepared from hindered amine N-oxyl compounds by a process which uses hydrogen peroxide or a hydrogen peroxide equivalent, a catalytic amount of a peroxide decomposing transition metal salt, metal oxide, or metal-ligand complex, a hydrocarbon solvent containing no activated hydrogen atoms, and a relatively inert cosolvent. These compounds are useful as thermal and light stabilizers for a variety of organic substrates.
通过使用过氧化氢或过氧化氢等效物、过氧化物分解过渡金属盐、金属氧化物或金属配体复合物的催化量、不含活化氢原子的碳氢溶剂以及相对惰性的共溶剂,可以从受阻胺N-氧化物化合物制备受立体位阻碍的N-羟基烷氧基胺。这些化合物可用作各种有机基质的热稳定剂和光稳定剂。