申请人:Ciba-Geigy Corporation
公开号:US05021481A1
公开(公告)日:1991-06-04
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-tertraoxa-3,9-diphosphaspiro[5,5]-undecanes.
磷取代的4-
氨基和
4-羟基-
2,2,6,6-四甲基哌啶的N-烃氧衍
生物是聚合物组合物的有效
光稳定剂。这些
磷化合物包括
磷酸酯和环
磷酸酯,如1,3,2-二氧
磷杂环戊烷,1,3,2-二氧
磷杂
环丙烷,1,3,2-氧氮
磷杂环戊烷,1,3,2-氮
磷杂环戊烷,1,3,2-二氧
磷杂
环己烷,1,3,2-二氧
磷杂烯烷和2,4,8,10-四氧-3,9-二
磷螺[5,5]-
十一烷。