Abstract: The present invention relates to a pigmented aqueous basecoat material comprising a polyether-based reaction product which is preparable by reaction of (a) at least one cyclic carboxylic anhydride comprising a free carboxylic acid group and/or the halide of a carboxylic acid group with (b) at least one polyether of the general structural formula (I) in which R is a C3 to C6 alkylene radical and n is selected accordingly such that the polyether (b) possesses a number-average molecular weight of 800 to 4000 g/mol, the components (a) and (b) being used in the reaction in a molar ratio of 0.7/2.3 to 1.6/1.7 and the resulting reaction product possessing an acid number of 10 to 50 mg KOH/g.

Abstract: The present invention relates to an aqueous polyurethane-polyurea dispersion (PD) having polyurethane-polyurea particles, present in the dispersion, having an average particle size of 40 to 2000 nm, and having a gel fraction of at least 50%, obtainable by (I) preparing a composition (Z) comprising based each case on the total amount of the composition (Z), (Z.1) 15 to 65 wt % of at least one intermediate containing isocyanate groups and having blocked primary amino groups, its preparation comprising the reaction (Z.1.1) of at least one polyurethane prepolymer containing isocyanate groups and comprising anionic groups and/or groups which can be converted into anionic groups, with (Z.1.2) at least one polyamine comprising at least two blocked primary amino groups and at least one free secondary amino group, by addition reaction of isocyanate groups from (Z.1.1) with tree secondary amino groups from (Z.1.2), (Z.

Abstract: Described herein is an aqueous basecoat material including at least one aqueous polyurethane-polyurea dispersion (PD) with polyurethane-polyurea particles present in the dispersion and having an average particle size of 40 to 2000 nm and a gel fraction of at least 50%, and also including at least one aqueous dispersion (wD) which includes a polymer prepared by a successive radical emulsion polymerization of three different mixtures (A), (B), and (C), of olefinically unsaturated monomers. Also described herein are multicoat paint systems produced using the basecoat materials.

Abstract: Provided herein is a pigmented aqueous basecoat material including an aqueous polyurethane-polyurea dispersion (PD) having polyurethane-polyurea particles present in the dispersion, an average particle size (volume average) of 40 to 2000 nm, and a gel fraction of at least 50 wt %. The polyurethane-polyurea particles, in each case in reacted form, include: at least one polyurethane prepolymer containing isocyanate groups and including anionic groups and/or groups which can be converted into anionic groups, and at least one polyamine comprising two primary amino groups and one or two secondary amino groups. The aqueous basecoat material includes a specific solvent composition. Also provided herein is a method of using basecoat materials including the dispersion (PD) and multicoat paint systems produced using the basecoat materials.

Abstract: The present invention relates to a reaction product preparable by reacting (a) dimer fatty acids with (b) at least one compound (b) of the general structural formula (I) where R is a C3 to C6 alkylene radical and n correspondingly is selected such that the compound (b) possesses a number-average molecular weight of 120 to 445 g/mol, components (a) and (b) are used in a molar ratio of 0.7/2.3 to 1.6/1.7, and the resulting reaction product possesses a number-average molecular weight of 600 to 4000 g/mol and an acid number of less than 10 mg KOH/g. The invention further relates to a pigmented aqueous basecoat material which comprises this reaction product, and to the use of the reaction product in pigmented aqueous basecoat materials for improving adhesion. The present invention further relates to a method for producing multicoat paint systems, and also to the multicoat paint systems producible by means of said method.

Abstract: Described herein is a method for producing a coating system on a substrate, including producing a cured basecoat film on the substrate by applying a pigmented aqueous basecoat material to the substrate and subsequently curing the basecoat material, wherein the basecoat material includes a polyether-based reaction product which is preparable by reaction of (a) at least one cyclic tetracarboxylic dianhydride having an aliphatic, aromatic or araliphatic radical X which bridges the two anhydride groups, with (b) at least one polyether of a general structural formula (II) in which R is a C3 to C6 alkylene radical and n is selected such that the polyether (b) possesses a number-average molecular weight of 500 to 5000 g/mol, and wherein components (a) and (b) are used in the reaction in a molar ratio of 0.7/2.3 to 1.6/1.7 and a resulting reaction product possesses an acid number of 5 to 80 mg KOH/g.

Abstract: Provided herein is a pigmented aqueous basecoat material including a hydroxy-functional polyether-based reaction product that is prepared by a urethane group-forming reaction of: (a) at least one component including isocyanate groups that is prepared by the urethane group-forming reaction of at least one organic diisocyanate (a1) with at least one polyether (a2) of the general structural formula (I). R is a C3 to C6 alkylene radical, and n is selected accordingly such that a polyether (b) possesses a number-average molecular weight of 500 to 5000 g/mol, the components (a1) and (a2) being used in a molar ratio of 1.8/1.7 to 3.0/1.0, and the resulting component (a) having an isocyanate content of 0.5 to 10.0% with (b) at least one organic polyol.

Abstract: The present invention relates to a pigmented aqueous basecoat material comprising a polyether-based reaction product which is preparable by reaction of (a) at least one cyclic carboxylic anhydride comprising a free carboxylic acid group and/or the halide of a carboxylic acid group with (b) at least one polyether of the general structural formula (I) in which R is a C3 to C6 alkylene radical and n is selected accordingly such that the polyether (b) possesses a number-average molecular weight of 800 to 4000 g/mol, the components (a) and (b) being used in the reaction in a molar ratio of 0.7/2.3 to 1.6/1.7 and the resulting reaction product possessing an acid number of 10 to 50 mg KOH/g.

Abstract: The present invention relates to a pigmented aqueous basecoat material comprising a polyether-based reaction product which is preparable by reaction of (a) at least one cyclic carboxylic anhydride comprising a free carboxylic acid group and/or the halide of a carboxylic acid group with (b) at least one polyether of the general structural formula (I) in which R is a C3 to C6 alkylene radical and n is selected accordingly such that the polyether (b) possesses a number-average molecular weight of 800 to 4000 g/mol, the components (a) and (b) being used in the reaction in a molar ratio of 0.7/2.3 to 1.6/1.7 and the resulting reaction product possessing an acid number of 10 to 50 mg KOH/g.

Abstract: The present invention relates to an aqueous polyurethane-polyurea dispersion (PD) having polyurethane-polyurea particles, present in the dispersion, having an average particle size of 40 to 2000 nm, and having a gel fraction of at least 50%, obtainable by (I) preparing a composition (Z) comprising based each case on the total amount of the composition (Z), (Z.1) 15 to 65 wt % of at least one intermediate containing isocyanate groups and having blocked primary amino groups, its preparation comprising the reaction (Z.1.1) of at least one polyurethane prepolymer containing isocyanate groups and comprising anionic groups and/or groups which can be converted into anionic groups, with (Z.1.2) at least one polyamine comprising at least two blocked primary amino groups and at least one free secondary amino group, by addition reaction of isocyanate groups from (Z.1.1) with tree secondary amino groups from (Z.1.2), (Z.

Abstract: The present invention relates to a dimer fatty acid/dimer diol reaction product which is preparable by reacting (a) dimer fatty acids with (b) at least one dimer diol, where components (a) and (b) are used in a molar ratio of 0.7/2.3 to 1.3/1.7 and the resulting dimer fatty acid/dimer diol reaction product possesses a number-average molecular weight of 1200 to 5000 g/mol and an acid number <10 mg KOH/g. The invention further relates to a pigmented aqueous basecoat material which comprises this dimer fatty acid/dimer diol reaction product, and also to the use of said dimer fatty acid/dimer diol reaction product in pigmented aqueous basecoat materials. It relates, further, to a method for producing multicast paint systems, and also to the multicoat paint systems producible by means of said method. The present invention relates, furthermore, to the refinishing of defects on multicoat paint systems.

Abstract: The present invention relates to an aqueous polyurethane-polyurea dispersion (PD) having polyurethane-polyurea particles, present in the dispersion, having an average particle size of 40 to 2000 nm, and having a gel fraction of at least 50%, obtainable by (I) preparing a composition (Z) comprising, based in each case on the total amount of the composition (Z), (Z.1) 15 to 65 wt % of at least one intermediate containing isocyanate groups and having blocked primary amino groups, its preparation comprising the reaction (Z.1.1) of at least one polyurethane prepolymer containing isocyanate groups and comprising anionic groups and/or groups which can be converted into anionic groups, with (Z.1.2) at least one polyamine comprising at least two blocked primary amino groups and at least one free secondary amino group, by addition reaction of isocyanate groups from (Z.1.1) with free secondary amino groups from (Z.1.2), (Z.

Abstract: A pigmented aqueous basecoat material is disclosed. The pigmented aqueous basecoat material includes a polyether-based reaction product which is preparable by a reaction of trimesic acid with at least one polyether of the general structural formula (I) R is a C3 to C6 alkylene radical and n is selected accordingly such that the at least one polyether possesses a number-average molecular weight of 500 to 5000 g/mol. The trimesic acid and the at least one polyether are used in the reaction in a molar ratio of 0.7/2.3 to 1.6/1.7 and the resulting reaction product possesses an acid number of 10 to 50 mg KOH/g.

Abstract: The present invention relates to a pigmented aqueous basecoat material including a polyether-based reaction product which is preparable by reaction of (a) at least one carboxy-functional component which is preparable by esterification reaction of at least one dihydroxycarboxylic acid (a1) with at least one dicarboxylic acid (a2) and/or the anhydride of a dicarboxylic acid (a2), the components (a1) and (a2) being used in a molar ratio of 0.5/3.0 to 1.7/1.8, with (b) at least one polyether of a general structural formula (I) in which R is a C3 to C6 alkylene radical and n is selected accordingly such that the polyether (b) possesses a number-average molecular weight of 500 to 5000 g/mol, the components (a) and (b) being used in the reaction in a molar ratio of 0.7/2.3 to 1.6/1.7, and the resulting reaction product possessing an acid number of 10 to 50 mg KOH/g.

Abstract: Described herein is a pigmented aqueous basecoat material including a polyether-based reaction product which is preparable by reaction of (a) at least one cyclic tetracarboxylic dianhydride having an aliphatic, aromatic, or araliphatic radical X bridging the two anhydride groups with (b) at least one polyether of the general structural formula (II) in which R is a C3 to C6 alkylene radical and n is selected accordingly such that the polyether (b) possesses a number-average molecular weight of 500 to 5000 g/mol, the components (a) and (b) being used in the reaction in a molar ratio of 0.7/2.3 to 1.6/1.7 and the resulting reaction product possessing an acid number of 5 to 80 mg KOH/g. Also described herein is a reaction product of specific dianhydrides and a polyether, and the use of the pigmented aqueous basecoat material or the reaction product.

Abstract: The present invention relates to a pigmented aqueous basecoat material comprising a polyether-based reaction product which is preparable by reaction of (a) at least one compound of the formula (I) X1—Y—X2??(I) in which X1 and X2, independently of one another, are each a functional group which is reactive toward hydroxyl groups, and Y is a divalent aliphatic or araliphatic, carboxy-functional organic radical having a number-average molecular weight of 100 to 1000 g/mol, with (b) at least one polyether of the general structural formula (II) in which R is a C3 to C6 alkylene radical and n is selected accordingly such that the polyether (b) possesses a number-average molecular weight of 200 to 4000 g/mol, where components (a) and (b) are used in the reaction in a molar ratio of 0.7/2.3 to 1.6/1.7 and the resulting reaction product possesses a number-average molecular weight of 500 to 15 000 g/mol and an acid number of 10 to 120 mg KOH/g.

Abstract: A dimer fatty acid-polyether-reaction product prepared by reacting a composition containing at least 80 wt % of one or more dimer fatty acids with at least one polyether of application formula (I) in a molar ratio of 0.7/2.3 to 1.6/1.7. The reaction product has a number-average molecular weight of 4800 to 40000 g/mol and an acid number of less than 10 mg KOH/g.

Abstract: The present invention relates to a pigmented aqueous basecoat material comprising a carboxy-functional dimer fatty acid-based reaction product which is preparable by reaction of (a) dimer fatty acids with (b) at least one compound of the general structural formula (I) where R is a C3 to C6 alkylene radical and n is selected accordingly such that the polyether (b) possesses a number-average molecular weight of 120 to 6000 g/mol, components (a) and (b) are used in a molar ratio of at least 1/1 and the resulting reaction product possesses a number-average molecular weight of 1000 to 20 000 g/mol and an acid number of 10 to 120 mg KOH/g.

Abstract: The present invention relates to a pigmented aqueous basecoat material comprising a polyether-based reaction product which is preparable by reaction of (a) at least one diisocyanate of the formula (I) OCN—Y—NCO??(I) in which Y is a divalent aliphatic, aromatic or araliphatic hydrocarbon radical having from 6 to 30 carbon atoms, with (b) at least one polyether of the general structural formula (II) in which R is a C3 to C6 alkylene radical and n is selected accordingly such that the polyether (b) possesses a number-average molecular weight of 200 to 4000 g/mol, where components (a) and (b) are used in the reaction in a molar ratio of 0.7/2.3 to 1.6/1.7 and the resulting reaction product possesses a number-average molecular weight of 500 to 15 000 g/mol and an isocyanate content of less than 0.2%.

Abstract: The present invention relates to a pigmented aqueous basecoat material comprising a reaction product which is preparable by reaction of (a) at least one aliphatic linear polyester having two functional end groups (a.1), with (b) at least one diene polymer having two functional end groups (b.1), where at least one type of group (a.1) is reacted in a linking manner with at least one type of group (b.1), said components (a) and (b) are used in the reaction in a molar ratio of 2.3/0.7 to 1.7/1.6 and the resulting reaction product possesses a number-average molecular weight of 1000 to 15 000 g/mol.