Patent ID: 8221538

Claim:
An aqueous pigment preparation comprising (A) at least one organic pigment, an inorganic pigment or a mixture thereof, (B) a dispersant of formula (I), (II), (III) or (IV) or mixtures of dispersants of formulae (I), (II), (III) or (IV) wherein the indices a, b and c are the molar fraction of the respective monomers: a=0.01 to 0.8; b=0.001 to 0.8; c=0.001 to 0.8; provided the sum total of a+b+c is 1, A is C 2 - to C 4 -alkylene and B is a C 2 - to C 4 -alkylene other than A, k equals 0 or 1, m is from 0 to 500; n is from 0 to 500, provided the sum total of m+n is from 1 to 1000; XA is an aromatic or araliphatic radical having 3 to 30 carbon atoms optionally containing one or more of the hetero atoms N, O and S, ZA is H or (C 1 -C 4 )-alkyl, ZB is H or (C 1 -C 4 )-alkyl, ZC is H or (C 1 -C 4 )-alkyl; R 1 is hydrogen or methyl, XB is an aromatic or araliphatic radical having 3 to 30 carbon atoms optionally containing one or more of the hetero atoms N, O and S, WA is oxygen or an NH group, R 2 is hydrogen or methyl, Y is an aliphatic hydrocarbyl radical having 1 to 30 carbon atoms, which is optionally linear or branched or else cyclic, and optionally contains hetero atoms O, N, S or a mixture thereof and optionally unsaturated, WB is oxygen or an NH group; (C) optionally wetters, (D) optionally at least one surfactant, at least one dispersant or a mixture thereof, (E) optionally one or more organic solvents, one or more hydrotropic substances or a mixture thereof, (F) optionally further additive materials customary for preparing aqueous pigment dispersions, and (G) water.