Patent ID: 6541538
Filing Date: 2003-04-01
Classification: C08F,C09D

Abstract:
An ink-jet printing ink composition comprising a colorant, a carrier medium, and a cationic, water-soluble resin composition comprising a first monomer, a second monomer, and a third monomer wherein the first monomer is N-vinylpyrrolidinone, the second monomer is selected from the group consisting of N-methylolacrylamide, N-methylolmethacrylamide, N-isobutoxymethylacrylamide, and mixtures thereof, and the third monomer is represented by the formula:CH2&boxH;C(R)COY(CH2)nN+Râ€²Râ€³Râ€²â€³Xâˆ’wherein R is a hydrogen atom or a methyl group; Y is O or NH; n is an integer from 1 to about 4; Râ€², Râ€³, and Râ€²â€³ are hydrogen or alkyl or aralkyl groups independently containing from 1 to about 18 carbon atoms; and X is an anion such as chloride, bromide, tosylate, or alkylsulfate.