Waterfast infrared scannable inks for ink jet printing

Details Waterfast infrared scannable inks for ink jet printing Waterfast infrared scannable inks for ink jet printing

C - Chemistry, Metallurgy

09

D

C09D 11/02 (2006.01) C09D 11/00 (2006.01)

Patent

CA 2209757

An ink jet ink composition comprises a liquid vehicle, a dye, a hydroxyalkylated polyethyleneimine, and an ammonium salt for enhancement of waterfastness. The ammonium salt preferably comprises less than 1% of the ink composition, and is added to a combination of the dye and ethoxylated polyethyleneimine. The ink jet ink composition increases the waterfastness of the ink to a level greater than 85%.

Une composition d'encre pour impression au jet d'encre comprend un véhicule liquide, un colorant, une polyéthylèneimine hydroxyalkylée et un sel d'ammonium pour accroître la résistance à l'eau. De préférence, le sel d'ammonium constitue moins de 1 % de la composition d'encre, et est ajouté à une combinaison du colorant et de la polyéthylèneimine éthoxylée. La composition d'encre pour impression au jet d'encre augmente la résistance à l'eau de l'encre à un degré supérieur à 85 %.

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