Sterically hindered N-hydrocarbyloxyamines (I) are prepared from hindered amine N-oxyl compounds (II) by a process which uses 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 an inert cosolvent, These compounds are useful as thermal and light stabilizers for a variety of organic substrates.
通过使用过氧化物或
过氧化氢当量、过氧化物分解过渡
金属盐、金属氧化物或
金属
配体络合物的催化量、不含活性氢原子的烃溶剂和惰性共溶剂,可以从受阻胺N-氧化物化合物制备受阻N-烃氧胺(I)。这些化合物可用作各种有机基质的热稳定剂和
光稳定剂。