blockcopolymere of oxazolinen and oxazinen as pigmentdispergiermittel and their use for tintenstrahldrucktinten

摘要

Aqueous dispersions having improved stability and which are particularly well suited for use as aqueous ink jet ink compositions comprise an aqueous vehicle which comprises water or a mixture of water and an organic solvent; a particulate solid, preferably a pigment; and a polyoxazoline or polyoxazine dispersant selected from the group of AB, ABA, and BAB block copolymers wherein the A block is hydrophobic, and the B block is hydrophilic, and wherein the polymer as a whole has a solubility in the aqueous vehicle of at least 0.1 wt % at 25 DEG C.