申请人:Ciba-Geigy Corporation
公开号:US04992547A1
公开(公告)日:1991-02-12
The photopolymerizable mixture described contains (A) at least one ethylenically unsaturated photopolymerisable compound, (B) a photoinitiator of the formula I ##STR1## and (C) a photosensitiser from the group of aromatic carbonyl compounds having a triplet energy of 225-310 kJ/mol, for example xanthones, thioxianthones, coumarins, phthalimides, phenones and the like. Ar is phenyl substituted in the 4-position by a substituted amino group, R.sup.1 and R.sup.2 are alkyl, R.sup.3 and R.sup.4 are alkyl or alkoxyalkyl, or R.sup.3 and R.sup.4 together are 3-oxapentamethylene. Said sensitisers (C) raise the activity of said photoinitiators (B) without shortening the shelf life of the mixtures. The photocurable mixtures are used especially as binders for printing inks or paints.
所述光敏混合物包含(A)至少一种乙烯基不饱和光敏聚合物化合物,(B)式I的光引发剂##STR1##和(C)从芳香族羰基化合物组中具有225-310 kJ / mol的三重态能量的光敏剂,例如黄酮,噻黄酮,香豆素,邻酰胺,苯酮等。其中Ar是在4位被取代氨基基团取代的苯基,R1和R2是烷基,R3和R4是烷基或烷氧基烷基,或R3和R4一起是3-氧代戊亚甲基。所述感光剂(C)提高了所述光引发剂(B)的活性,而不缩短混合物的货架寿命。该光固化混合物特别用作印刷油墨或涂料的粘合剂。