| abstract |
This invention concerns photopolymerisable systems containing ethylenically unsatured reactive oligomers and/or monomers comprising at least a photoinitiator and at least a coinitiator of formula (I) having low-extractability and low-volatility, in which R1 is a linear or branched C1-C4 alkyl; R2, R3 and R4 are, independently of one another, hydrogen or linear or branched C1-C4 alkyl; A is linear or branched C1-C10 alkylene or cycloalkylene; n is 0 or 1. |