Patent ID: 8551605

Claim:
A coating composition for a facestock, comprising: a binder being a water-dispersible polymer; an ethylenically unsaturated moiety which is either: a) an aqueous-dispersible compound that is miscible with said water-dispersible polymer, or b) is provided as a pendent side chain from the backbone of the water dispersible polymer or is provided as part of the backbone of the water-dispersible polymer; wherein said ethylenically unsaturated moiety is able to form a covalent bond with an ink and wherein the ethylenically unsaturated compound moiety comprises one or more urethane linkages; and a single aziridine or carbodiimide crosslinker, wherein said crosslinker is the only crosslinker present in the coating composition, wherein said crosslinker can bind functional groups on a surface of the facestock with functional groups of the coating composition, and wherein the crosslinker is present in the coating composition in an amount in excess of that required for stoichiometric crosslinking of the water-dispersible polymer, and wherein when the ethylenically unsaturated moiety is the aqueous-dispersible compound that is miscible with said water-dispersible polymer, the coating composition is formulated so that, upon its application on a facestock, a dried coating can be formed having the single aziridine or carbodiimide crosslinker present throughout said dried coating, wherein the crosslinker can react with functional groups of the facestock, and wherein the crosslinker can form a three-way chemical interaction between the crosslinker, the water-dispersible polymer, and the aqueous-dispersible compound all the way through the dried coating, and further wherein there are functional groups available in the dried coating on a surface opposite from a surface facing the facestock for the aqueous-dispersible compound to bind the ink.