Patent ID: 7074842
Filing Date: 2006-07-11
Classification: C09D

Abstract:
1. An inkjet ink composition comprising (a) a liquid medium; (b) a pigment; (c) an emulsion polymer, said polymer comprising as polymerized units 1–10%, by weight based on dry polymer weight, of a first monomer selected from the group consisting of methylol acrylamide, methylol methacrylamide, methyl acrylamidoglycolate methyl ether, acrylamidoglycolic acid, and mixtures thereof; and (d) a latent acid catalyst composition at 0.1% to 10% by weight of the inkjet ink, wherein the latent acid catalyst composition is selected from the group consisting of ammonium chloride, animonium nitrate, ammonium citrate, diammonium phosphate, magnesium chloride, amine salts of p-toluene sulfonic acid and mixtures thereof.