申请人:Ciba-Geigy Corporation
公开号:US04208522A1
公开(公告)日:1980-06-17
Substituted piperazine diones are stabilizers for synthetic polymeric materials normally subject to deterioration caused by ultraviolet light. The compounds are prepared by the alkylation reaction between a substituted piperazine dione and an organic halide. Polymeric compositions containing these stabilizers may also contain a hindered phenolic compound. A typical embodiment is 15,15'-dodecamethylenebis(7,15-diazadispiro[5,1,5,3]hexadecane-14,16-dione ).
替代哌嗪二酮是用于合成聚合物材料的稳定剂,通常会因紫外线而受到破坏。这些化合物是通过替代哌嗪二酮和有机卤素之间的烷基化反应制备的。含有这些稳定剂的聚合物组合物也可以含有阻碍酚化合物。一个典型的实施例是15,15'-十二亚甲基双(7,15-二氮杂二螺[5,1,5,3]十六烷-14,16-二酮)。