Aqueous newsprint inks

Details Aqueous newsprint inks Aqueous newsprint inks

C - Chemistry, Metallurgy

09

D

6/29

C09D 11/14 (2006.01)

Patent

CA 1146708

AQUEOUS NEWSPRINT INKS ABSTRACT OF THE DISCLOSURE In an improved process for printing newsprint paper with a light- weight keyless printing press system the material oil ink standardly used is replaced by an aqeous newsprint ink having a total solids con- tent of about 13-80% and containing about 2-30% of a colorant consist- ing of a pigment and/or dye, about 3-60% of a dispersed starch, and water to total 100%, wherein the percentages are by weight based on total weight of the ink. The ink may optionally contain a viscosity stabilizer if necessary to prevent retrogradation of the starch or a thickener. In a preferred emodiment the pigment is carbon black and the starch is a dextrin or waxy fluidity starch.

384037

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