Abstract: Effect pigment pastes include at least one effect pigment; at least one aqueous monomodal primary dispersion which is pseudoplastic after neutralization and has a solids content of from 15 to 40% by weight, comprising as disperse phase particles with an average size of from 10 to 500 nm which are composed of a hydrophobic core and hydrophilic shell, said particles being constructed of at least one (meth)acrylate copolymer having a glass transition temperature of from 30 to 100° C. and an acid number of from 10 to 50 mg KOH/g; at least one organic amine and/or ammonia; nonionic surfactant; and organic solvent, process for preparing the pigment paste, and their use for preparing pigmented mixtures, especially aqueous and nonaqueous coating materials.

Abstract: A pigment paste free from binders and grinding resins, comprising based on its overall amount (A) from 15 to 25% by weight of at least one mica pigment, (B) from 0.45 to 0.75% by weight of at least one nonassociative thickener comprising at least one methacrylate copolymer based on C1-C6 alkyl (meth)acrylate and (meth)acrylic acid, (C) from 0.1 to 0.4% by weight of at least one organic amine, (D) from 0.1 to 12% by weight of at least one nonionic surfactant, and (E) at least 50% by weight of water; its use for preparing aqueous coating materials, and processes for the preparation.

Abstract: The present invention relates to a process for producing single-coat or multicoat clearcoat finishes on primed or unprimed substrates by applying at least one powder coating dispersion, in particular a powder clearcoat slurry, to the substrate and then curing the resulting film(s) thermally and/or with actinic radiation, in which oxalic acid is added to at least one powder coating dispersion, in particular to a powder clearcoat slurry.

Abstract: The present invention relates to a process for producing single-coat or multicoat clearcoat finishes on primed or unprimed substrates by applying at least one powder coating dispersion, in particular a powder clearcoat slurry, to the substrate and then curing the resulting film(s) thermally and/or with actinic radiation, in which oxalic acid is added to at least one powder coating dispersion, in particular to a powder clearcoat slurry.

Abstract: The present invention relates to a process for producing single-coat or multicoat clearcoat finishes on primed or unprimed substrates by applying at least one powder coating dispersion, in particular a powder clearcoat slurry, to the substrate and then curing the resulting film(s) thermally and/or with actinic radiation, in which at least one polyvalent inorganic acid and/or oxalic acid are or is added to at least one powder coating dispersion, in particular to a powder clearcoat slurry.

Abstract: A process is claimed for producing a multilayer coating on a substrate surface, in which(A) an aqueous coating composition comprising as film-forming agent an aqueous polymer dispersion is applied as basecoat composition to a substrate surface coated with a customary primer surfacer,(B) a suitable transparent topcoat composition is applied to the basecoat thus obtained, and(C) the basecoat is baked together with the topcoat,wherein the basecoat composition comprises an aqueous polymer dispersion comprising(i) an acrylate polymer based on from 30 to 60% by weight of C.sub.1 -C.sub.8 -alkyl (meth)acrylate monomers, from 30 to 60% by weight of vinyl-aromatic monomers and from 0.5 to 10% by weight of (meth)acrylic acid, and(ii) a thickener, which does not have an associative action, comprising an acrylate copolymer based on (C.sub.1 -C.sub.6)-alkyl (meth)acrylate and (meth)acrylic acid.

Abstract: A description is given of a process for preparing a multilayer coating on a substrate surface, in which(A) an aqueous coating composition (ii) containing as film-forming agent an aqueous polymer dispersion is applied as basecoat (II) to a substrate surface coated with an aqueous basecoat (i),(B) the composition applied in step (A) is subjected to partial drying,(C) an appropriate transparent topcoat composition is applied to the basecoat (II) thus obtained, and(D) the basecoats (I) and (II) are baked together with the topcoat,wherein the basecoat composition (II) contains an aqueous polymer dispersion comprising(x) an acrylate polymer based on from 30 to 60% by weight of C.sub.1 -C.sub.8 -alkyl (meth)acrylate monomers, from 30 to 60% by weight of vinyl-aromatic monomers and from 0.5 to 10% by weight of (meth)acrylic acid, and(y) a thickener, which does not have an associative effect, containing an acrylate copolymer based on (C.sub.1 -C.sub.6)-alkyl (meth)acrylate and (meth)acrylic acid.