abstract |
The present invention relates to the novel use of known lactone compounds of the formula (I) in which n, Y and R 1 are as defined in claim 1 as photoinitiators in systems which can be polymerized by UV light. And a method for photopolymerizing unsaturated compounds using a lactone compound of formula (I). The invention further relates to compounds of formula (I), wherein R 1 is an unsubstituted phenyl group. |