Abstract: The invention relates to a method for producing a pigment paste by mixing at least one pigment, consisting of solid particles, with a grind resin in the presence of water and/or an organic liquid, wherein the grind resin comprises a dispersion of core-shell particles in an epoxide prepolymer which is liquid at 20° C., or consists of such a dispersion, and the core-shell particles have a silicone core and a polymer shell. The invention also relates to an aqueous electrocoat material, to the use thereof, to a method for cataphoretic electrocoating, and to a coated article.

Abstract: The invention relates to a method of increasing the stonechip resistance of OEM coat systems composed of an anticorrosion coat, a surfacer coat, and a concluding topcoat, in which 0.1% to 30% by weight, based on the nonvolatile fractions of the coating material, of electrically charged inorganic particles AT whose ratio D/d, the ratio of the average particle diameter (D) to the average particle thickness (d), is >50 and whose charge is at least partly compensated by singly charged organic counterions OG, are incorporated into the coating material that is used to produce at least one of said coats and that comprises at least one polymer P, and the coating material is applied and, lastly, is cured.

Abstract: Described are glycerol diesters of the general formula (I) wherein one of the two radicals R1 or R2 is hydrogen, and the radical of the two radicals R1 and R2 that is not hydrogen is a radical: and the radicals R3, R4, R5, and R6 independently of one another are a saturated, aliphatic radical having 1 to 20 carbon atoms, with the proviso that the radicals R3 and R4 together contain at least 5 carbon atoms and the radicals R5 and R6 together contain at least 5 carbon atoms. Also described is a process for preparing the glycerol diesters, use thereof as reactive diluents, coating materials comprising the glycerol diesters, multicoat paint systems and their production, comprising the use of the coating materials, and also to substrates coated therewith.

Abstract: Cathodically depositable electrocoat materials comprising basic bismuth nitrate, further comprising at least one binder having reactive functional groups and at least one crosslinker containing the complementary reactive functional groups which are able to enter into thermal crosslinking reactions.

Abstract: Disclosed is an aqueous effect basecoat material comprising at least one liquid-crystalline aqueous preparation (WZ) in fractions of 1% to 99% by weight, based on the aqueous basecoat material, at least one film-forming polymer (FP), and at least one effect pigment (EP).

Abstract: The present invention relates to a method for producing a multicoat paint system on a metallic substrate, in which a basecoat or a plurality of directly successive basecoats are produced directly on a metallic substrate coated with a cured electrocoat, a clearcoat is produced directly on the one basecoat or the uppermost of the plurality of basecoats, and then the one or more basecoats and the clearcoat are jointly cured, and wherein at least one basecoat material used for production of the basecoats comprises at least one linear hydroxy-functional reaction product (R) having an acid number of less than 20 mg KOH/g, the preparation of which involves using at least one compound (v) containing two functional groups (v.1) and an aliphatic or araliphatic hydrocarbyl radical (v.2) which is arranged between the functional groups and has 12 to 70 carbons atoms.

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 an aqueous coating composition comprising at least one aqueous dispersion comprising at least one copolymer (CP), said copolymer (CP) 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, at least one linear hydroxy-functional reaction product (R) having an acid number less than 20 mg KOH/g, the preparation of which involves using at least one compound (v) containing two functional groups (v.

Abstract: The present invention relates to an aqueous coating composition comprising at least one aqueous dispersion comprising at least one copolymer (CP), said copolymer (CP) 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 at least one linear hydroxy-functional reaction product (R) having an acid number less than 20 mg KOH/g, the preparation of which involves using at least one compound (v) containing two functional groups (v.

Abstract: The invention relates to a method to determine a formula for a sample color matching a target color, based on an obsolete color formula, based on a given range of tinting bases. According to the proposed method, a color prediction model is used to calculate a distance between respective color parameters of a candidate color formula and the color parameters of the target color, and a genetic algorithm is used to obtain the formula for the sample color out of a population of candidate color formulas, wherein a distance of respective color parameters of a candidate color formula of the population of candidate color formulas to the color parameters of the target color is minimized by the genetic algorithm by iterative steps of mutation/crossing-over and selection of candidate color formulas that fit best to a fitness criterion, until a pre-given stopping criterion is fulfilled which automatically leads to a candidate color formula which is kept as the sample color formula.

Abstract: The present invention relates to a method for producing a multicoat paint system on a metallic substrate, in which a basecoat or a plurality of directly successive basecoats are produced directly on a metallic substrate coated with a cured electrocoat, a clearcoat is produced directly on the one basecoat or the uppermost of the plurality of basecoats, and then the one or more basecoats and the clearcoat are jointly cured, and wherein at least one basecoat material used for production of the basecoats comprises 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.

Abstract: The present invention relates to a solventborne primer surfacer which comprises at least one additive preparable by reacting at least one alpha,omega-hydroxy-functionalized oligoester which possesses an OH number of 30 to 160 mg KOH/g, a theoretical carbon-carbon double bond content of 1 to 2.5 mmol/g, a number-average molecular weight of 1000 to 3000 g/mol, and a weight-average molecular weight of 2800 to 10 000 g/mol, and at least one alkoxysilane which possesses an OH-reactive functional group, the sum of the weight percentage fractions of all additives of the invention being 0.5 to 10 wt %, based on the total amount of the solventborne primer surfacer. The present invention further relates to a process for producing multicoat paint systems, and to multicoat paint systems producible by means of said process. The invention further relates to the use of the additive identified above in solventborne primer surfacers for improving adhesion.

Abstract: The present invention relates to a solventborne clearcoat material which comprises at least one additive preparable by reacting at least one alpha,omega-hydroxy-functionalized oligoester which has an OH number of 30 to 160 mg KOH/g, a theoretical carbon-carbon double bond content of 1 to 2.5 mmol/g, a number-average molecular weight of 1000 to 3000 g/mol, and a weight-average molecular weight of 2800 to 10 000 g/mol, and at least one alkoxysilane which possesses an OH-reactive functional group, the sum of the weight percentage fractions of all additives of the invention being 0.5 to 10 wt %, based on the total amount of the solventborne clearcoat material. The present invention further relates to a process for producing multicoat paint systems, and to multicoat paint systems producible by means of said process. The invention further relates to the use of the above-identified additive in solventborne clearcoat materials for the purpose of improving adhesion.

Abstract: The present invention relates to a mixer system for producing topcoat compositions and filling compounds comprising a volumetric or gravimetric metering plant as a mixing apparatus and comprising at least the following components (a) to (d), these being at least one pigment-free component (a) for producing at least one topcoat composition (A), where (a) comprises at least one binder (a1) and at least one organic solvent (a2), at least one component (b) different from (a), for producing at least one coating composition (B) used as filling compound, where (b) comprises at least one binder (b1), which comprises at least one unsaturated polyester and/or at least one polyurethane, at least one organic solvent (b2), and at least one filler (b3), a plurality of different pigment pastes (c) different from the components (a), (b), and (d), which in each case independently of one another comprise at least one binder (c1), at least one organic solvent (c2), and at least one pigment (c3), and a plurality of different, bi

Abstract: The present invention relates to a method for at least partly coating an electrically conductive substrate with an electrocoat material, comprising at least contacting the substrate with an aqueous coating composition (A) as step (1), which is carried out in at least two successive stages (1a) and (1b), i.e.

Abstract: The present invention relates to an aqueous coating composition (A) comprising at least one cathodically depositable binder (A1) and optionally at least one crosslinking agent (A2), for at least partly coating an electrically conductive substrate with an electrocoat material, where the coating composition (A) has a pH in a range from 4.0 to 6.5 and comprises a total amount of at least 30 ppm of bismuth, based on the total weight of the coating composition (A), and where the aqueous coating composition (A) is produced using at least 0.01% by weight of aluminum oxide particles (B), based on the total weight of the coating composition (A), to the use of (A) for at least partly coating an electrically conductive substrate with an electrocoat material, to a corresponding coating method, and to an at least partly coated substrate obtainable by this method.

Abstract: The present invention relates to an aqueous coating composition (A) having a pH in a range from 4.0 to 6.

Abstract: The present invention relates to an aqueous coating composition (A) comprising at least one cathodically depositable binder (A1) and optionally at least one crosslinking agent (A2), for at least partly coating an electrically conductive substrate with an electrocoat material, where the coating composition (A) has a pH in a range from 4.0 to 6.5 and comprises a total amount of at least 30 ppm of bismuth, based on the total weight of the coating composition (A), and where (A) is produced using at least 0.005% by weight of magnesium oxide particles (B), based on the total weight of the coating composition (A), to the use of (A) for at least partly coating an electrically conductive substrate with an electrocoat material, to a corresponding coating method, and to an at least partly coated substrate obtainable by this method.

Abstract: The present invention relates to an aqueous coating composition (A) having a pH in a range from 4.0 to 6.

Abstract: The present invention relates to an organic-inorganic hybrid thin film and a method for preparing the same and more specifically to an organic-inorganic hybrid thin film including a stable new functional group and a method for preparing the organic-inorganic hybrid thin film that is formed by the molecular layer deposition method alternately using inorganic precursor and organic precursor.