N-hydrocarbyloxy hindered amine light stabilizers substituted with phosphorus moieties.

摘要

N-Hydrocarbyloxy derivatives of phosphorus substituted 4-amino- and 4-hydroxy-2,2,6,6-tetramethylpiperidine are effective light stabilizers for polymer compositions. These phosphorus compounds include phosphites and cyclic phosphites such as 1,3,2-dioxaphospholanes, 1,3,2-dioxaphosphorinanes, 1,3,2-oxazaphospholidines, 1,3,2-diazaphospholidines, 1,3,2-dioxaphosphocins, 1,3,2-dioxaphosphepins and 2,4,8,10-tetraoxa-3,9-diphosphaspiro[5,5]undecanes.