Patent ID: 8202361
Filing Date: 2012-06-19
Classification: B01F,C09B,C09D,Y10T

Abstract:
1. An aqueous pigment preparation comprising (A) at least one organic pigment, an inorganic pigment or a combination 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 B is a C 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 represents 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 ZB is H or (C ZC is H or (C R 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 Y is an aliphatic hydrocarbyl radical having 1 to 30 carbon atoms, which are linear or branched or else cyclic, and optionally contains hetero atoms O, N, S and may also be unsaturated, WB is oxygen or an NH group; Q is SO or QM is: wherein M is H, a monovalent metal cation, a divalent metal cation, NH (C) optionally wetters, (D) optionally further surfactants, dispersants or a combination thereof, (E) optionally one or more organic solvents, or one or more hydrotropic substances or a combination thereof, (F) optionally additive materials for preparing aqueous pigment dispersions, and (G) water; and wherein the asterisk in the formula QM represents a free valency and indicates the linkage to the group (B—O)n.