Patent ID: 8013053

Claim:
A water dispersion for ink jet printing, comprising water-insoluble polymer particles containing a colorant, and a nonionic organic compound satisfying the following conditions I and II: I: Water containing 0.001% by weight of the nonionic organic compound has a surface tension of 70 mN/m or less as measured at 25° C.; and II: A solubility of the nonionic organic compound in 100 g of water is 0.30 g or less as measured at 25° C., wherein the nonionic organic compound is 2-ethylhexyl glyceryl ether and/or isodecyl glyceryl ether; wherein a content of the nonionic organic compound in the water dispersion is from 0.3 to 2.0% by weight; and wherein the water-insoluble polymer is a graft polymer which contains a constitutional unit derived from polypropylene glycol mono(meth)acrylate represented by the following formula: wherein R 3 is a hydrogen atom or a methyl group, and x is a number from 1 to 30.