申请人:Ciba-Geigy Corporation
公开号:US04007156A1
公开(公告)日:1977-02-08
Acylated derivatives of substituted piperazines are stabilizers for synthetic polymeric materials normally subject to deterioration caused by ultraviolet light. The compounds are prepared by the acylation reaction between a substituted piperazine and a mono or di-acid halide, ester or isocyanate. Polymeric compositions containing these stabilizers may also contain a hindered phenolic compound. A typical embodiment is 15-stearoyl-7,15-diazadispiro[5,1,5,3]hexadecane.
取代哌嗪的酰化衍生物是用于合成聚合材料的稳定剂,这些材料通常会因紫外线而退化。该化合物是通过取代哌嗪和单酸或双酸卤化物、酯或异氰酸酯之间的酰化反应制备而成。含有这些稳定剂的聚合物组合物也可以包含一种受阻酚化合物。一个典型的实施例是15-硬脂酰基-7,15-二氮杂二螺[5,1,5,3]十六烷。