Patent ID: 6221932
Filing Date: 2001-04-24
Classification: C09D

Abstract:
An ink-jet ink composition comprising a macromolecular chromophore, wherein said macromolecular chromophore comprises:(a) at least one water-solubilizing functional group wherein said water-solubilizing functional group comprises at least one aromatic group or a C.sub.1 to C.sub.12 alkyl groups having attached at least one ionizable group; and(b) at least one polymer wherein said polymer is covalently attached to said macromolecular chromophore by nucleophilic substitution or acylation reactions through ester groups having the structures: ##STR4##wherein any position on the aromatic nucleus can be substituted, and n is from 0 to 10; andwherein the attachments to said macromolecular chromophore are made in at least two steps:a) attaching said water-solubilizing functional group to said macromolecular chromophore and subsequentlyb) covalently attaching said polymer to said macromolecular chromophore by nucelophilic substitution.