Patent ID: 8857964
Filing Date: 2014-10-14
Classification: B41J,C09D

Abstract:
1. An inkjet ink composition, comprising: latex polymer particles present in the ink composition in an amount ranging from about 0.5 wt % to about 40 wt %, the latex polymer particles having: a T up to about 100% of total cross-linkable sites being present: on surfaces of the latex polymer particles; throughout a bulk of the latex polymer particles; or combinations thereof; the latex polymer particles being formed from monomers consisting of at least one hydrophobic monomer selected from the group consisting of methyl methacrylate, ethyl methacrylate, propyl methacrylate, butyl methacrylate, hexyl methacrylate, 2-ethylhexyl methacrylate, lauryl methacrylate, octadecyl methacrylate, isobornyl methacrylate, vinyl acetate, methyl acrylate, ethyl acrylate, propyl acrylate, butyl acrylate, hexyl acrylate, 2-ethylhexyl acrylate, lauryl acrylate, octadecyl acrylate, isobornyl acrylate, styrene, and combinations thereof, at least one acidic monomer selected from the group consisting of acrylic acid, methacrylic acid, itaconic acid, maleic acid, vinyl benzoic acid, derivatives thereof, and combinations thereof, and at least one crosslinkable monomer, the at least one crosslinkable monomer including at least one keto group, and having the general formula where: R1=H or CH X=Y=a divalent hetero atom linking group or a bond; R2=R3=a divalent linking group; and R4=an alkyl, aryl, substituted alkyl group or substituted aryl group; at least one cross-linker compound selected from the group consisting of diamino compounds, polyamino compounds, and combinations thereof; at least one colorant; and at least one aqueous solvent; wherein the latex polymer particles are configured to form a crosslinked latex polymer film by interaction with the at least one cross-linker compound at least one of during or after depletion of the at least one aqueous solvent from the latex polymer particles after the ink composition is applied by inkjet printing onto a medium.