Abstract: The present invention relates to a composition comprising (A) at least one carboxy-functional polyester having an acid number in the range from 20 to 250 mg KOH/g, prepared using at least one difunctional monomer (a1) with aliphatic groups having 12 to 70 carbon atoms between the functional groups, and also (B) at least one synthetic layered hydroxide, where the at least one layered hydroxide (B) is prepared in the presence of the polyester (A). The present invention further relates to the preparation of the composition and also to the use of the composition as coating material.

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: Shelf-stable low temperature cure coating compositions that include a hydroxy-functional resin, a crosslinking agent, and a catalyst that does not catalyze the crosslinking reaction between hydroxy-functional resin and the crosslinking agent contained therein, but instead between a hydroxy-functional resin and a crosslinking agent contained in a different low temperature cure coating composition.

Abstract: The present invention provides nonaqueous coating material compositions, multistage coating processes and also the use of the coating material compositions, comprising (A) at least one polyhydroxyl-group-containing compound, (B1) at least one polyisocyanate-group-containing compound (B1) having free or blocked isocyanate groups and having a cycloaliphatic polyisocyanate parent structure, and/or a polyisocyanate derived therefrom, (B2) at least one polyisocyanate-group-containing compound (B2) having free or blocked isocyanate groups and having an acyclic, aliphatic polyisocyanate parent structure, and/or a polyisocyanate derived therefrom, (D) at least one catalyst for the crosslinking of silane groups, and (R) at least one rheological assistant (R) based on fumed silica, where component (B1) and/or component (B2) comprise at least one structural unit —NR—(X—SiR?x(OR?)3-x)??(I), and/or at least one structural unit —N(X—SiR?x(OR?)3-x)n(X?—SiR?y(OR?)3-y)m??(II).

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 dicarboxylic acid of the formula (I) HOOC—Y—COOH??(I) in which Y is a divalent aliphatic, aromatic or araliphatic hydrocarbon radical having from 4 to 11 carbon atoms, with (b) at least one polyether of the general structural formula (II) in which R is a C4 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 less than 10 mg KOH/g.

Abstract: The invention relates to a coating material system which comprises components (A) to (C) and also, optionally, further components, with, in a first option, all components (A) to (C) and also, where present, the further optional components being present separately from one another, in other words the individual components not being mixed with one another. In a second option of the coating material system of the invention, conversely, the aforementioned components may also be mixed wholly or at least partly with one another. Where the components are at least partly mixed with one another, this means that, for example, component (C) is mixed with component (A), while component (B) is present separately from this mixture of (A) and (C). Optionally, however, component (B) may also be mixed with a portion of component (C). Furthermore, the mixtures of (A) and (C) and of (B) and (C) may additionally comprise at least one optional component such as a solvent, for example.

Abstract: The present invention relates to a multicoat effect and/or color paint system, a method for producing the multicoat paint system, and also the use thereof. The transparent coating material composition comprises at least one rheological assistant (R) based on fumed silica and comprises a polyisocyanate group-containing component (B) which additionally has at least one structural unit of the formula (I) and/or at least one structural unit of the formula (II).

Abstract: The invention relates to aqueous dispersions comprising multistage-prepared polymers, and also to coating material compositions comprising them, preparable by multistage polymerization of olefinically unsaturated monomers, using an emulsifier and a water-soluble initiator, under conditions of starved feed polymerization, and using particular monomer mixtures in the individual stages. The invention also relates to a pigmented aqueous basecoat material comprising the aqueous dispersion of the invention, to the use of the aqueous dispersion of the invention in aqueous basecoat materials for improving adhesion, to a process for producing a multicoat paint system on a substrate, and to a multicoat paint system produced in accordance with the stated process.

Abstract: A carbamate-functional material is prepared by reacting a carbamate compound with a hydroxy-functional material using titanium (IV) alkoxide as catalyst.

Abstract: A coating material system including components (A) to (D): (A) at least one polyhydroxy group-containing compound which has an acid number of not more than 9 mg KOH/g of the corresponding polyhydroxy group-containing compound, (B) at least one polyisocyanate-containing compound, (C) at least one catalyst which contains bismuth (Bi) as metal component, where the catalyst is present as a salt of at least one organic acid, and (D) at least one aromatic carboxylic acid, where the aromatic carboxylic acid of component (D) and the organic acid of component (C) are different from one another, and where i) components (A) to (D) are present separately from one another or ii) are mixed wholly or at least partly with one another.

Abstract: A metering and mixing device contains a multichamber cartridge and a cartridge holder having a reception container for the multichamber cartridge and a compressed air connection and a connection for an application device. The reception container has an internal tube arranged coaxially to the walls of the cartridge holder and equipped with static mixing elements. The multichamber cartridge contains an upper portion having a directional valve, a middle portion configured as a tubular empty space surrounded by at least two chambers arranged tubularly in the direction of the longitudinal axis of the cartridge, and a lower portion having a piston for each chamber. The multichamber cartridge is arranged in the cartridge holder such that the inner wall of the inner tube of the multichamber cartridge bears, leak-tight, against the outer wall of the tube of the cartridge holder.

Abstract: The present invention relates to a pigment paste comprising at least one aqueous dispersion comprising at least one copolymer, said copolymer being preparable by (i) initially charging an aqueous dispersion of at least one polyurethane, and then (ii) polymerizing a mixture of olefinically unsaturated monomers in the presence of the polyurethane from (i), in which (a) a water-soluble initiator is used, (b) the olefinically unsaturated monomers are metered in such that a concentration of 6.0% by weight, based on the total amount of olefinically unsaturated monomers used for polymerization, in the reaction solution is not exceeded over the entire reaction time, and (c) the mixture of the olefinically unsaturated monomers comprises at least one polyolefinically unsaturated monomer, and further comprising a pigment, where the weight ratio of pigment to copolymer is at least 1.5. The invention further relates to the use of the copolymer for dispersion of pigments.

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 dicarboxylic acid of the formula (I) HOOC—Y—COOH??(I) in which Y is a divalent aliphatic, aromatic or araliphatic hydrocarbon radical having from 4 to 11 carbon atoms, with (b) at least one polyether of the general structural formula (II) in which R is a C4 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 less than 10 mg KOH/g.

Abstract: The present invention relates to a method for producing a coating consisting of a cured surfacer coat and topcoat on a substrate, and also to a substrate coated by the method of the invention. The substrate preferably comprises the body or the cabin of a motor vehicle, or a constituent thereof. The method of the invention is suitable especially for producing coatings on automobiles and commercial vehicles, such as trucks, vans, or buses.

Abstract: Coating material combination consisting of a coating material for forming a surfacer coat and a coating material for forming a topcoat, and use thereof for producing a coating system consisting of a surfacer coat and topcoat on a substrate. The substrate preferably comprises the body or the cabin of a motor vehicle, or a constituent thereof. The coating material combination of the invention is suitable especially for producing coatings consisting of a cured surfacer coat and a cured topcoat on automobiles and commercial vehicles, such as trucks, vans, or buses.

Abstract: Described are coating material compositions comprising an isocyanate group-containing component, a hydroxyl group-containing component, and a zinc (1-methylimidazole)bis(2-ethylhexanoate) complex. Also described is the use of a zinc (1-methylimidazole)bis(2-ethylhexanoate) complex as a catalyst system for the urethane reaction in coating material compositions.

Abstract: The invention relates to binder-free spot blender compositions for one- and two-component clearcoat materials comprising at least one isocyanate compound, to processes for producing them, and to their use in automotive refinish.

Abstract: The present invention relates to a method for producing a multicoat coating (M) on a substrate (S) that comprises the following steps: (I) producing a basecoat (B) on the substrate by applying an aqueous basecoat material (b) to the substrate (S), the basecoat material being a two-component coating composition, and (II) producing a clearcoat (K) directly on the basecoat (B) by applying an aqueous clearcoat material (k) directly to the basecoat (B), the clearcoat material being a two-component coating composition. The present invention also relates to the multicoat coatings produced accordingly and also to their use.

Abstract: The present invention relates to an aqueous two-component basecoat material (b) comprising (b.1) a base component comprising (1) at least one polyurethane resin having a hydroxyl number of 15 to 100 mg KOH/g and an acid number of 10 to 50 mg KOH/g, (2) at least one aqueous dispersion comprising water and a polyurethane resin fraction consisting of at least one polyurethane resin, the polyurethane resin fraction having a gel fraction of at least 50%, having its glass transition at a temperature of less than ?20° C. and having its melting transition at a temperature of less than 100° C., (3) at least one color and/or effect pigment, at least one pigment (3) being used in the form of at least one pigment paste comprising at least one polyurethane resin (1) as pasting resin, and (b.2) a curing component comprising (4) at least one hydrophilically modified polyisocyanate (4) having an isocyanate content of 8% to 18%.

Abstract: The present invention relates to a method for producing coatings on metal surfaces, wherein an optionally precoated metal surface has applied to it a coating material composition (K) which comprises a) at least one polyhydroxyl group-containing component (A), b) at least one component (B) having on average at least one free and/or blocked isocyanate group and having on average at least one hydrolyzable silane group of the formula (I) —N(X—SiR?x(OR?)3-x)n(X?—SiR?y(OR?)3-y)m??(I) c) and at least one phosphorus-containing catalyst (D) for the crosslinking of silane groups, which comprises i. applying the coating material composition (K) to wheel rims, ii. 5 to 50 mol % of the isocyanate groups originally present in component (B) having undergone reaction to form silane groups of the formula (I), and iii. the phosphorus-containing catalyst (D) being selected from the group of phosphorus-containing acids and/or the partial esters of phosphorus-containing acids.