PHOTOPOLYMERISABLE MIXTURES COMPRISING PHOTOINITIATORS BASED ON BENZOPHENONE AND PHENYLGLYCINE

摘要

The invention relates to photopolymerisable mixtures containing at least one ethylenically unsaturated photopolymerisable compound, at least one photoinitiator, and optionally a polymer binding agent, sensitizers and/or additives. The inventive mixtures are characterised in that the at least one photoinitiator comprises at least one benzophenone derivative of formula (I) wherein R1 = H or R2; R2 represents a radical -(X-R)z-G, -(R-X-)z-G or -R-(R-X)z-G where z = 0-3; R represents -(CH2)n- where n = 1-20; X represents groups which are the same or different -O-, -S-, -NR3-, -CO-O-, -O-CO-, -CO-NH-, -NH-CO-, -O-CO-NH-, -NH-CO-O- or -NH-CO-NH-; and G represents a radical of formula (A), formula (B) or formula (C), wherein R3 represents hydrogen or an alkyl radical which is optionally interrupted by at least one -O- or -S- group and comprises between 1 and 20 C atoms; R4 represents hydrogen, an alkyl radical comprising between 1 and 20 C atoms or a group -OR3, -SR3, -COOR3 or -CON(R3)2; and R5 represents hydrogen or an alkyl radical comprising between 1 and 4 C atoms.