for the photopolymerisation appropriate bifunktionelle photoinitiatoren and those containing photopolymerisierbare systems

摘要

The present invention relates to compounds of general formula (I)whereinX1 and X2 are different form each other and have the meanings reported in the following descriptionY is a simple bond, C1-C12 linear or branched alkyl groups, -O-, -S-, S=O, SO2, NR17-, wherein R17 is H, C1-C12 linear or branched alkyl groups, COR1, and photopolymerisable formulations containing as photoinitiators the aforementioned compounds of formula (I).