Radiation curable fluorescent printing inks

Details Radiation curable fluorescent printing inks Radiation curable fluorescent printing inks

C - Chemistry, Metallurgy

09

K

C09K 11/02 (2006.01) C08J 3/28 (2006.01) C09D 11/00 (2006.01) C09D 11/02 (2006.01) C09D 11/10 (2006.01) C09K 11/06 (2006.01)

Patent

CA 2263755

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.

L'invention concerne des encres fluorescentes et des concentrés d'encre fluorescente pouvant être séchés par exposition à un faisceau électronique ou ultraviolet. La composition d'encre est constituée de: a) environ 20 à 90 %, de préférence, 30 à 70 % et idéalement 30 à 60 % en poids, d'un oligomère choisi parmi (i) un oligomère de formaldéhyde, (ii) un oligomère cyclique-aliphatique et (iii) des mélanges de ceux-ci; b) 0,1 à 15 % de colorant fluorescent; c) 10 à 80 % d'un véhicule photopolymérisable; et d) 0 à 20 % de photoamorceur.

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