申请人:Ciba-Geigy Corporation
公开号:US05218009A1
公开(公告)日:1993-06-08
Compounds of the formula I ##STR1## in which at least one of the radicals R.sub.1, R.sub.2 and R.sub.3 is a substituted alkyl radical or cycloalkyl radical, or R.sub.1 and R.sub.2 together with the phosphorus atom form a monocyclic or tricyclic ring, are effective photoinitiators for the photopolymerization of ethylenically unsaturated compounds.
公式I的化合物 ##STR1## 其中至少一个基团R.sub.1、R.sub.2和R.sub.3是取代烷基基团或环烷基团,或R.sub.1和R.sub.2与磷原子一起形成单环或三环的环,对于乙烯基不饱和化合物的光聚合是有效的光引发剂。