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。