RADIATION CURABLE FLUORESCENT PRINTING INKS

摘要

The present invention provides fluorescent inks and ink concentrates which are curable by exposure to ultraviolet or electron beam radiation. The ink composition is comprised of a) 20-90 % of an oligomer selected from (i) a formaldehyde oligomer, (ii) a cyclic-aliphatic oligomer, and (iii) mixtures thereof, b) 0.1-15 % of fluorescent dye, c) 10-80 % of photopolymerizable vehicle, and d) 0-20 % of photoinitiator.