abstract |
Process for the photopolymerisation of unsaturated compounds Abstract Compounds of the formula I, II, III, IV or V I II III IV V in which Ar, X, Y, Y', R1 to R5 and R1' to R5' are as defined in claim 1, can be used as photoinitiators for the photo-polymerisation of unsaturated compounds. They can be prepared by a Diels-Alder reaction and/or a Grignard reaction. |