Abstract: Described herein is a method for producing a multicoat paint system by producing a basecoat or a plurality of directly successive basecoats directly on a substrate coated with a first coat, producing a clearcoat directly on the one or the topmost of the plurality of basecoats, and subsequently jointly curing the one or the plurality of basecoats and the clearcoat. At least one of the basecoat materials is admixed, directly before application, either with an aqueous dispersion (D1) including a polyamide (PA) having an acid number of 15 to 60 mg KOH/g or with an aqueous dispersion (D2) including a polyamide (PA) and an amide wax (AW).

Abstract: Disclosed herein is a method for producing an aqueous titanium dioxide slurry. The method includes (a) providing an aqueous dispersion medium, and (b) dispersing titanium dioxide into the aqueous dispersion medium provided in step (a) to obtain a titanium dioxide slurry containing at least 65 wt.-% up to 85 wt.-% of titanium dioxide, based on the total weight of the thus obtained slurry, where step (b) is carried out by sole use of a non-milling mixing device and at least until the Hegman fineness of the titanium dioxide particles is below 8 ?m. Further disclosed herein are a slurry obtained from the disclosed method, a coating composition containing the same, and a method for producing a coating and a thus coated substrate.

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 are an aqueous pigment paste including at least one color pigment (a) and at least one polymer (b) which is preparable by successive radical emulsion polymerization of three monomer mixtures (A), (B) and (C) of olefinically unsaturated monomers in water, an aqueous basecoat material which is preparable by admixing the pigment paste to at least one aqueous binder-containing component suitable for preparing the basecoat material, a method for producing a multicoat paint system using this basecoat material, and use of the polymer (b) for dispersing color pigments within an aqueous pigment paste.

Abstract: The present invention relates to a method for producing a multicoat paint system by producing a basecoat or a plurality of directly successive basecoats directly on a substrate coated with a first coat, producing a clearcoat directly on the one or the topmost of the plurality of basecoats, and subsequently jointly curing the one or the plurality of basecoats and the clearcoat. At least one of the basecoat materials is admixed, directly before application, either with an aqueous dispersion (D1) comprising a polyamide (PA) having an acid number of 15 to 60 mg KOH/g or with an aqueous dispersion (D2) comprising a polyamide (PA) and an amide wax (AW).

Abstract: The present disclosure relates to an aqueous basecoat material including as binder, at least one aqueous, acrylate-based microgel dispersion (MD), and also at least one pigment paste including at least one color and/or effect pigment, and also as paste binder, at least one polymer of olefinically unsaturated monomers, where the polymer includes functional groups for nonionic stabilization of the polymer in water, and also functional groups selected from the group of silicon-containing, phosphorus-containing, and urea-containing groups, the aqueous basecoat material further including less than 0.5 wt %, based on its total weight, of synthetic phyllosilicates.

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: Described here is a method for determining the mean length of filaments formed on rotational atomization of a coating material composition, the method including atomization of the coating material composition by means of a rotational atomizer including as application element a bell cup capable of a rotation (1), optical capture of the filaments formed here at the bell cup edge, by means of at least one camera (2), and digital evaluation of the optical data obtained in this way, to give the mean filament length of those filaments formed on atomization that are located at the edge of the bell cup (3), as well as methods for compiling an electronic database and for screening coating material compositions when developing paint formulations.

Abstract: Disclosed herein is a method for determining a drop size distribution within a spray and/or a homogeneity of this spray, the spray being formed on atomization of a coating material composition, which includes atomization of the coating material composition by means of an atomizer, the atomization producing a spray, optical capture of the drops of the spray formed, by a traversing optical measurement (2), and determination of at least one characteristic variable of the drop size distribution within the spray and/or of the homogeneity of the spray, on the basis of optical data obtained as per step (2). Also described herein are methods for compiling an electronic database and for screening coating material compositions when developing paint formulations, carried out on the basis of the method.

Abstract: Described herein is a method for producing at least one coating (B1) on a substrate, including provision of a coating material composition (BZ1) (1), determination of at least one characteristic variable of a drop size distribution within a spray formed on atomization of the coating material composition (BZ1), and/or of the homogeneity of this spray (2), reduction of the at least one characteristic variable and/or homogeneity of the spray (3), application of at least the coating material composition (BZ1) obtained after step (3), to a substrate, to form at least one film (F1) (4), and physical curing, chemical curing and/or radiation curing at least of the at least one film (F1) formed on the substrate by application of (BZ1), to produce the coating (B1) on the substrate. Also described herein is a coating (B1) located on a substrate and obtainable by means of this method.

Abstract: A method is disclosed for producing a multicoat paint system on a metallic substrate by producing a basecoat or a plurality of directly successive basecoats directly on a metallic substrate coated with a cured electrocoat system, producing a clearcoat directly on the one or the topmost of the plurality of basecoats, and subsequently jointly curing the one or the plurality of basecoats and the clearcoat. At least one basecoat material used for producing the basecoats includes at least one predispersed mixture including at least one polyamide having an acid number of less than 20 mg KOH/g, at least one polymeric resin different from the polyamide, and also water and at least one organic solvent.

Abstract: Aqueous dispersions including multistage-prepared polymers of mixtures of olefinically unsaturated compounds are disclosed. The aqueous dispersions include at least one polyurethane containing olefinically unsaturated groups. Production and use of the aqueous dispersions, particularly in the field of automotive finishing, is disclosed. The disclosure further relates to an aqueous basecoat material including the multistage-prepared polymers, and also to a method for producing a multicoat paint system using the aqueous basecoat material.

Abstract: Described herein is a method for producing at least one coating (B1) on a substrate, including provision of a coating material composition (BZ1) (1), determination of a mean filament length of filaments formed on rotational atomization of the coating material composition (BZ1) provided as per step (1) (2), reduction of the determined mean filament length (3), application of at least the coating material composition (BZ1) obtained after step (3), with reduced mean filament length, to a substrate, to form at least one film (F1) (4), and physical curing, chemical curing and/or radiation curing at least of the at least one film (F1) formed on the substrate as per step (4), to produce the coating (B1) on the substrate (5). Also described herein is a coating (B1) located on a substrate and obtainable by means of this method.

Abstract: The present invention relates to aqueous dispersions comprising multistage-prepared polymers of olefinically unsaturated compounds and to the preparation and use thereof, in particular in the field of automobile coating.

Abstract: Provided herein is a method for producing a multicoat paint system on a metallic substrate by producing a basecoat or a plurality of directly successive basecoats directly on a metallic substrate coated with a cured electrocoat system, producing a clearcoat directly on the one or the topmost of the plurality of basecoats, and subsequently jointly curing the one or the plurality of basecoats and the clearcoat, wherein at least one basecoat material used for producing the basecoats includes at least one aqueous dispersion which includes a polymer whose preparation includes successive radical emulsion polymerization of three mixtures of olefinically unsaturated monomers.

Abstract: Provided herein is a mixer system for producing refinish compositions, more particularly for the sector of automotive finishing, including at least mutually different components (1), (2), and (3), namely component (1) as base varnish, component (2) as tinting base, and component (3) as rheology module, with at least one of components (1) to (3) including at least one aqueous dispersion including at least one polymer prepared by multistage emulsion polymerization, and at least one of components (1) to (3) including at least one aliphatic monoalcohol having 5 carbon atoms and/or at least one aliphatic monoalcohol having 6 carbon atoms. Further provided herein is an aqueous refinish composition that is produced by the mixing of components (1) to (3), and a method for producing aqueous refinish compositions. Further provided herein is a use of the mixer system for producing aqueous refinish compositions for automotive refinishing.

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 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: Described herein are aqueous dispersions including multistage-prepared polymers of olefinically unsaturated compounds and to the preparation and use thereof, in particular in the field of automobile coating.

Abstract: Provided herein is a method for producing a multicoat paint system on a metallic substrate by producing a basecoat or a plurality of directly successive basecoats directly on a metallic substrate coated with a cured electrocoat system, producing a clearcoat directly on the one or the topmost of the plurality of basecoats, and subsequently jointly curing the one or the plurality of basecoats and the clearcoat, wherein at least one basecoat material used for producing the basecoats includes at least one aqueous dispersion which includes a polymer whose preparation includes successive radical emulsion polymerization of three mixtures of olefinically unsaturated monomers.