Patent ID: 11945959
Assignee: SUN CHEMICAL CORPORATION
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  B  D | IPC B  C  D

Claim 0:
1. A method of printing an image on a fibrous substrate by inkjet printing, wherein the method comprises applying a water-based ink composition onto the substrate, wherein the ink composition comprises a carboxylic acid functional co-polymer having an acid number of ≥225 mg KOH/g, a pigment, water and at least one organic co-solvent, wherein the carboxylic acid functional co-polymer is a poly(styrene-maleic acid) co-polymer and/or a poly(styrene-maleamic acid) co-polymer wherein the fibrous substrate is a textile;
wherein the poly(styrene-maleic acid) co-polymer and/or poly(styrene-maleamic acid) co-polymer does not contain maleic anhydride residues and/or maleic ester residues; and
wherein the carboxylic acid functional co-polymer functions as dispersant, surfactant, and binder in the composition.