Patent ID: 7485679

Claim:
An aqueous color, effect, or color and effect coating material which is free from rheological aids based on phyllosilicates, comprising: (A) at least one polyurethane which is water-soluble, water-dilutable; water-dispersible, of a combination thereof, selected from the group consisting of ionically stabilized polyurethanes based on polyisocyanates; ionically and nonionically stabilized polyurethanes based on polyisocyanates; ionically stabilized polyurethanes based on polyisocyanates and grafted with olefinically unsaturated compounds; and ionically and nonionically stabilized polyurethanes based on polyisocyanates and grafted with olefinically unsaturated compounds; wherein the polyisocyanates are selected from the group consisting of aliphatic polyisocyanates, cycloaliphatic polyisocyanates, aliphatic-cycloaliphatic polyisocyanates, aromatic polyisocyanates, aliphatic-aromatic polyisocyanates, cycloaliphatic-aromatic polyisocyanates, and a combination thereof; (B) at least one color pigment, effect pigment, or color and effect pigment; (C) at least one dispersing assistant for the color pigment, effect pigment, or color and effect pigments, comprising the reaction products of: (c1) at least one functionalized copolymer comprising: (c11) at least one copolymerized olefinically unsaturated monomer comprising at least one reactive functional group selected from the group consisting of isocyanate groups, anhydride groups and epoxy groups; and (c12) at least one copolymerized olefinically unsaturated monomer which is free from isocyanate-, anhydride- and epoxy-reactive functional groups; (c2) at least one homopolymeric polyalkylene glycol, and (c3) at least one compound of the general formula I: NR 2 —C(O)NR 2 (I) in which the variables R are selected from the group consisting of hydrogen atoms and organic, saturated and unsaturated, substituted and unsubstituted, aliphatic, cycloaliphatic, aliphatic-cycloaliphatic, aromatic, aliphatic-aromatic and cycloaliphatic-aromatic radicals which may contain at least one amino group —NH—, at least one oxygen atom —O—and/or at least one sulfur atom —S—and/or may be cyclically linked to one another, at least one organic radical R being present and the radical R or at least one of the radicals R containing at least one reactive functional group selected from the group consisting of isocyanate-, anhydride- and epoxy-reactive groups; and (D) at least one rheological aid based on (meth)acrylate copolymers.