Photopolymerizable mixtures based on ethylenically unsaturated photopolymerizable compounds, useful e.g. in lacquers or printing inks, containing penta-1,4-diyn-3-one derivative as high reactivity photoinitiator

摘要

In a photopolymerizable mixture (A) comprising ethylenically unsaturated photopolymerizable compound(s), optionally a polymeric binder, a photoinitiator, optionally sensitizers and optionally various additives, the photointiator comprises at least one 1,5-disubstituted penta-1,4-diyn-3-one (Ia). In a photopolymerizable mixture (A) comprising ethylenically unsaturated photopolymerizable compound(s), optionally a polymeric binder, a photoinitiator, optionally sensitizers and optionally fillers, pigments, dyes, solvents, plasticizers, antioxidants, inhibitors, UV absorbers, thioxotropic agents or flow agents, the photointiator comprises at least one diynone compound of formula X-Ctriple boundC-C(O)-Ctriple boundC-Y (I). X, Y : 1-30C aliphatic or cycloaliphatic group; 6-30C aromatic group; 5- or 6-membered heteroaromatic group; or phenyl substituted by R1 and R2; R1, R2H, 1-20C aliphatic group, N(R3)2, COOR3, COR3, halo, OR3, SR3, CN, NCO, NO2, morpholino, CO-CC-R3, -CC-COR3, -CC-CO-CC-R3, O(CH2CH2O)nR3, OCOCH=CH2, OCOC(Me)=CH2 or CH=CH2; R3H, 1-30C aliphatic or cycloaliphatic group; 6-30C aromatic group; 5- or 6-membered heteroaromatic group; n : 1-30. An independent claim is included for the use of (I) as photoinitators.