申请人:Ciba-Geigy Corporation
公开号:US05155152A1
公开(公告)日:1992-10-13
The compounds of formula I ##STR1## wherein n is 1 or 2, R.sub.1 is C.sub.1 -C.sub.4 alkyl, R.sub.2 and R.sub.3 are, for example, alkanoyl or alkanoyloxy or R.sub.3 may also be, for example, alkanedioyl, are suitable for stabilizing chlorine-containing polymers against thermal and light-induced degradation. Some of the compounds of formula I are novel.
式I化合物 ##STR1## 其中n为1或2,R1为C1-C4烷基,R2和R3例如为烷酰基或烷酰氧基,或者R3也可以是例如链烷二酰基,适用于稳定含氯聚合物抵抗热和光诱导的降解。式I的一些化合物是新型的。