申请人:Ciba-Geigy Corporation
公开号:US05077402A1
公开(公告)日:1991-12-31
Compounds of the formula I, II, III and IIIa ##STR1## in which Ar.sup.1 is an unsubstituted or substituted aromatic radical and at least one of the radicals R.sup.1 and R.sup.2 is an alkenyl, cycloalkenyl or arylmethyl group, are effective photoinitiators for photopolymerization of unsaturated compounds. They are particularly suitable for photocuring of pigmented systems.
式I、II、III和IIIa的化合物##STR1##中,Ar.sup.1是未取代或取代的芳香基团,且至少有一个基团R.sup.1和R.sup.2是烯基、环烯基或芳基甲基基团,对于不饱和化合物的光聚合具有有效的光引发作用。它们特别适用于有色系统的光固化。