Patent ID: 7381753

Claim:
An ink comprising: an aqueous carrier; a pigment; and a polymeric binder consisting essentially of an aqueous dispersion of polymer particles, said polymer comprising, as polymerized units, (a) from 0 to 1 wt. % monoethylenically unsaturated acid monomer, based on polymer weight; (b) monomer of the formula CH 2 ═C(R1)—CON(R2)(R3) wherein R1═H, CH 3 or C 2 H 5 and R2 and R3 are independently selected from the group consisting of H, C1-C6 saturated alkyl and cycloalkyl groups; and (c) from 50 wt. % to 97% wt. % ethyl acrylate of the total weight of said binder; and wherein the total of (a) and (b) is at least 0.1 wt % monomer based on said polymer weight; and wherein the number average particle size of said binder is in the range of 150 nm to 400 nm as measured by Capillary Hydrodynamic Fractionation and wherein the glass transition temperature of said binder is in the range of −10° C. to 10° C.