Patent ID: 7910651

Claim:
Particles of a water-insoluble polymer for ink-jet printing which contain a colorant, wherein the water-insoluble polymer is obtained by copolymerizing a monomer mixture containing (a) a salt-forming group-containing monomer and (b) a rosin containing a reactive unsaturated group; wherein the (b) rosin containing the reactive unsaturated group is obtained by reacting at least one compound selected from the group consisting of natural rosins, modified rosins and polymeric rosins with a hydroxyl group-containing monomer and/or an epoxy group-containing monomer, wherein the natural rosins are resin acids obtained from Pinaceae plants; wherein the modified rosins are at least one compound selected from the group consisting of: i) hydrogenated products of rosins selected from the group consisting of dihydroabietic acid and tetrahydroabietic acid; ii) disproportionated products of rosins selected from the group consisting of dehydroabietic acid and dihydroabietic acid; iii) acid-modified rosins selected from the group consisting of maleopimaric acid, fumaropimaric acid, and acrylopimaric acid; and iv) rosin esters selected from the group consisting of natural rosin esters formed from a polyhydric alcohol and a natural rosin and modified rosin esters formed from a polyhydric alcohol and a modified rosin of i), ii) or iii) above; wherein the polymeric rosins are dimers and trimers of said natural rosins or said modified rosins.