| abstract |
A) mindestens eine ethylenisch ungesÃĪttigte photopolymerisierbare Verbindung, B) einen Photoinitiator der Formel I oder IIn n und C) einen Photosensibilisator aus der Gruppe der aromatischen Carbonylverbindungen mit einer Triplettenergie von 225-310 kJ/mol, wie z.B. Xanthone, Thioxanthone, Cumarine, Phthalimide, Phenone u.a. A photopolymerizable mixture containing is described A) at least one ethylenically unsaturated photopolymerizable compound, B) a photoinitiator of the formula I or II and C) a photosensitizer from the group of aromatic carbonyl compounds with a triplet energy of 225-310 kJ / mol, such as xanthones, thioxanthones, coumarins, phthalimides, phenones and others n n n The symbols Ar, R 1 , R 2 , R 3 , R 3 , R 4 and X have the meaning given in the claims. The sensitizers C) increase the activity of the photoinitiators B) without impairing the storage stability of the mixtures. The photocurable mixtures are mainly used as binders for printing inks or paints. |