申请人:Hoechst Aktiengesellschaft
公开号:US04239891A1
公开(公告)日:1980-12-16
The invention provides novel derivatives of 2,2-dimethyl-6,6-dialkyl-4-hydroxy-4'-carbamoyl-piperidines which carry a substituent at the amide nitrogen atom, and optionally a further substituent at the ring nitrogen atom, and a process for preparing these compounds. The products, optionally in the form of salts, are used for stabilizing thermoplastics against the damaging influence of light.
该发明提供了2,2-二甲基-6,6-二烷基-4-羟基-4'-氨基甲酰基哌啶的新衍生物,其在酰胺氮原子处携带取代基,并且在环氮原子处可以选择性地携带进一步的取代基。同时提供了制备这些化合物的方法。这些产品,可以是盐的形式,用于稳定热塑性塑料免受光的有害影响。