Patent ID: 8186822

Claim:
An inkjet ink composition comprising an aqueous vehicle having a colorant and a first crosslinked polyurethane dispersoid, wherein the ink comprises the crosslinked polyurethane dispersoid in an amount of more than about 0.5% to about 30% by weight, based on the total weight of the ink, and wherein the amount of crosslinking in the crosslinked polyurethane is greater than about 1% and less than about 50 wt % as measured by the THF insolubles test and where the crosslinked polyurethane is formed from at least a first diol, Z 1 a second diol, Z 2 and a third diol Z 3 and where p greater than or equal to 2, and m greater than or equal to 3 to about 36; R 5 , R 6 =hydrogen, alkyl, substituted alkyl, aryl; where the R 5 or R 6 are the same or different for each substituted methylene group and where R 5 and R 5 or R 6 can be joined to form a cyclic structure; Z 2 is a diol substituted with an ionic group; Z 3 is selected from the group consisting of polycarbonate diols, polyamide diols and poly(meth)acrylate diols; and where the colorant is selected from pigments and dyes or combinations of pigments and dyes.