Patent ID: 9410010
Filing Date: 2016-08-09
CPC Classification: C08G,C09D

Claim Text:
1. An inkjet ink comprising an aqueous inkjet colorant dispersion comprising a colorant and a urea terminated polyurethane ionic dispersant dispersion in an aqueous vehicle, wherein: (a) the ionic dispersant is physically adsorbed to the colorant, (b) the polymeric ionic dispersant stably disperses the colorant in the aqueous vehicle, (c) the volume average particle size of the dispersion is less than about 300 nm, wherein the urea terminated polyurethane dispersant comprises at least one compound of the general structure (I): R R R p is greater than or equal to 1, when p=1, m is greater than or equal to 3 to about 30, when p=2 or greater, m is greater than or equal to 3 to about 12; R Z wherein the urea content of the urea-terminated polyurethane is at least 2.5 weight % of the polyurethane and at most about 4.3 weight % of the polyurethane, wherein the urea content of the urea-terminated polyurethane is determined by dividing the mass of the amine terminator group by the mass of the other polyurethane components including the amine terminating agent and is reported in weight percent; wherein the colorant is selected from pigments and disperse dyes or combinations of pigments and disperse dyes; and wherein the inkjet ink is printable on paper or textile substrates.