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US 12,617,958 B2Granted
Aqueous ink compositions
AssigneeSun Chemical Corporation
InventorDerek Illsley
Life of this patent
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Abstract
Curable aqueous printing ink compositions, especially inkjet, having excellent resolubility, comprising self-crosslinkable styrene-acrylic polymer dispersions and hydroxy-functional PUDs.
Claims25
An aqueous printing ink composition comprising:
- an aqueous dispersion or solution of a self-crosslinking polymer, an aqueous dispersion of a hydroxyl-functional polyurethane, and at least one amine having a boiling point of above 130° C. and less than 250° C.;
- wherein the ratio of the self-crosslinking polymer, based on dry polymer weight, to OH-PUD, based on dry polymer weight, is in the range of 0.2:1.0 to 1.0:1.0;
- and wherein the self-crosslinking polymer is produced by a free radical polymerization of a blend of ethylenically unsaturated monomers.
Dependencies are inferred from the claim text.