申请人:Ciba-Geigy Corporation
公开号:US04412021A1
公开(公告)日:1983-10-25
Polyalkylpiperidyl-ureas of the formula I ##STR1## in which m is 1-4, X, R.sup.2 and R.sup.3 are monovalent substituents and R.sup.1 is a m-valent radical, can be prepared from the corresponding 4-aminopiperidines by reaction with carbamoyl chlorides. They are outstanding stabilizers for plastics, and especially for polyolefins, to protect them against degradation by the action of light.
公式I中的聚烷基哌啶基脲化合物,其中m为1-4,X、R2和R3为一价取代基,R1为m价基团,可以通过与氨基甲酰氯反应来制备相应的4-氨基哌啶。它们是塑料,特别是聚烯烃的优秀稳定剂,可保护它们免受光的分解。