Abstract: A process for preparing a carboxyl functional polyuretdione resin composition for use in powder coating compositions comprising the steps of: a) reacting at least one isocyanate (NCO) functional uretdione with at least one alcohol in a ratio of free NCO groups to hydroxyl groups in a range of 0.5:1 to 0.5:3, and, b) reacting the resulted hydroxyl functional polyuretdione with di- and/or polyfunctional acid(s) and/or their anhydride(s), wherein the carboxyl value of the resulting resin has a value in the range of from 20 to 300 mg KOH/g.

Abstract: A powder coating composition based on including at least one specific kind of the polyuretdione resin having a carboxyl value in the range of 20 to 300 mg KOH/g which exhibits higher crosslinking density in thin films, high flexibility, and excellent weather resistance.

Abstract: A powder coating composition comprising (A) at least one hydroxyl functional polyurethane resin binder, and (B) at least one polyurethane resin as cross-linking agent containing blocked isocyanate groups, wherein the at least one hydroxyl functional polyurethane resin binder (A) and the at least one polyurethane resin (B) both having a melting temperature of 60 to 180° C., in particular, 80 to 160° C.; the powder coating composition makes it possible to achieve a low melt viscosity and an excellent processability along with a good storage stability and in particular, to form thin films of the coating layers having high flexibility in combination with an excellent weather resistance.

Abstract: An aqueous coating composition comprising at least one aqueous binder latex, wherein the aqueous binder latex is prepared by (1) an aqueous phase polymerization of at least one olefinically monounsaturated, free-radically polymerizable monomer with at least one olefinically monounsaturated, free-radically polymerizable monomer with at least one acid group in organic solvent or in aqueous emulsion to form an acid functional (meth)acrylic resin, and neutralizing the acid groups of the formed polymer and (2) polymerizing in aqueous emulsion at least one olefinically unsaturated, polymerizable monomer with the resulting reaction product from (1) to form the aqueous binder latex, wherein the ratio by weight of the monomers of (1) to the monomers of (2) is in the range of from 10:90 to 90:10.

Abstract: A process for producing aqueous binder lattices comprising: 1) polymerizing at least one olefinically monounsaturated, free-radically polymerizable monomer with at least one olefinically monounsaturated, free-radically polymerizable monomer with at least one acid group in organic solvent or in aqueous emulsion to form an acid functional (meth)acrylic resin, and neutralizing the acid groups of the formed polymer, and 2) polymerizing in aqueous emulsion at least one olefinically unsaturated, polymerizable monomer in the presence of the formed polymer obtained in process step 1).

Abstract: Non-aqueous, liquid coating compositions which contain at least one hydroxyl-functional polyurethane resin A as the only hydroxyl-functional binder(s) and at least one crosslinking agent B with groups reactive with the hydroxyl groups of A, wherein the at least one polyurethane resin A is present as particles having a melting temperature of 40 to 180° C.

Abstract: Non-aqueous, liquid coating compositions which contain at least one polyurethane resin B with blocked isocyanate groups and at least one binder C with functional groups reactive towards the blocked isocyanate groups of B, wherein the at least one polyurethane resin B is present as particles having a melting temperature of 40 to 160° C.

Abstract: The invention provides a powder coating composition comprising (A) at least one hydroxyl functional polyester resin binder, and (B) at least one polyurethane resin as cross-linking agent containing blocked isocyanate groups, wherein the at least one hydroxyl functional polyester resin binder (A) and the at least one polyurethane resin (B) both having a melting temperature of 60 to 180° C., in particular, 60 to 160° C. The powder coating composition according to the invention provides the desired technological properties, in particular, thin films and high flexibility in combination with excellent mechanical properties of the coatings.

Abstract: The present invention provides a powder coating composition comprising A) 30 to 90 wt % of at least one glycidyl-functionalized (meth)acrylic resin, B) 30 to 90 wt % of at least one carboxyl functionalized polyurethane resin, C) 0.01 to 10 wt % of at least one wax, and D) 0.05 to 30 wt % of at least one coating additive, and optionally pigment and/or filler, the wt % based on the total weight of the powder coating composition; the powder coating composition provides coatings with a very low gloss level (highly matt finish) and smoothness, a superior durability against aggressive substances and a very good adhesion on metallic substrates.

Abstract: CED coating compositions which, apart from water, comprise (i) a resin solids content consisting of at least one film-forming, self- or externally cross-linking CED binder and the optional components: cross-linkers, paste resins, nonionic resins, and (ii) optionally, at least one component selected from the group consisting of pigments, fillers, coating additives and organic solvents, and contain relative to the resin solids content thereof, 1 to 20 wt. % of at least one resin A with functional groups selected from the group consisting of hydroxyl groups, free isocyanate groups and blocked isocyanate groups, wherein the at least one resin A is present as particles with melting temperatures from 40 to 200° C.

Abstract: Non-aqueous, liquid coating compositions which contain at least one epoxy-functional polyurethane resin A and at least one carboxyl-functional cross-linking component B, wherein the at least one epoxy-functional polyurethane resin A is present as particles having a melting temperature of 40 to 180° C.

Abstract: Non-aqueous, liquid coating compositions which contain at least one epoxy-functional binder A and at least one carboxyl-functional cross-linking resin B, wherein the at least one cross-linking resin B is present as particles having a melting temperature of 40 to 180° C.

Abstract: Non-aqueous, liquid coating compositions which contain at least one hydroxyl-functional component A, at least one hydroxyl-functional polyurethane resin B differing from the at least one component A and at least one crosslinking agent C with groups reactive towards the hydroxyl groups of A and B, wherein the at least one component A is not solid at room temperature and/or is present in dissolved form and wherein the at least one polyurethane resin B is present as particles having a melting temperature of 40 to 180° C.

Abstract: The invention relates to a process for multi-layer coating of substrates, in particular vehicles and vehicle parts, by applying two or more coating layers and curing of the applied coatings, wherein at least one of the coating layers is produced from a coating composition which comprises at least one polyurethane binder with free-radically polymerizable olefinic double bonds in the form of (meth)acryloyl groups and with hydrolysable alkoxysilane groups, wherein the resin solids content of the coating composition exhibits an equivalent weight of C?C double bonds of 200-2000, preferably of 300-1500, and a content of silicon bound in alkoxysilane groups of 1-10 wt-%, preferably of 1-7 wt-%, especially preferably of 2-6 wt-%, and wherein curing of the coating layer, of which there is at least one, proceeds by free-radical polymerisation of the C?C double bonds on irradiation with high energy radiation and by the formation of siloxane bridges under the action of moisture.

Abstract: A powder clear coating composition with a resin solids content comprising at least one epoxy-functional (meth)acrylic copolymer (A) having an epoxy equivalent weight of 250 to 600 and a carboxyl-functional curing component (B) of dodecanedioic acid (B1) and at least one carboxyl-functional urethane component (B2) having a carboxyl number of 80 to 350 mg of KOH/g, wherein the epoxy groups of the epoxy-functional (meth)acrylic copolymer (A) are in a molar ratio to the carboxyl groups of the carboxyl-functional curing component (B) of 2.5:1 to 0.8:1 and wherein 30 to 75% of the carboxyl groups provided by the carboxyl-functional curing component (B) are provided by the dodecanedioic acid (B1) and the remainder to make the total up to 100% by the at least one carboxyl-functional urethane component (B2).

Abstract: A process for the production of a coating layer from a thermally curable coating composition on a substrate, comprising the successive steps: a) providing a substrate to be coated, b) applying a backing foil coated on one side with an uncured or at least only partially cured coating layer of a thermally curable coating composition, with its coated side on the entire surface or at least one sub-zone of the surface of the substrate, c) supplying thermal energy onto the entire coating applied in step b), and d) removing the backing foil from the coating which remains on the substrate; wherein the supply of thermal energy onto the coating proceeds prior to and/or after removal of the backing foil.

Abstract: A powder coating composition comprising (A) at least one hydroxyl functional polyurethane resin binder, and (B) at least one polyurethane resin as cross-linking agent containing blocked isocyanate groups, wherein the at least one hydroxyl functional polyurethane resin binder (A) and the at least one polyurethane resin (B) both having a melting temperature of 60 to 180° C., in particular, 80 to 160° C.; the powder coating composition makes it possible to achieve a low melt viscosity and an excellent processability along with a good storage stability and in particular, to form thin films of the coating layers having high flexibility in combination with an excellent weather resistance.

Abstract: An AED coating composition comprising, apart from water, (A) 1 to 20, relative to the resin solids content of the composition, of at least one resin with functional groups selected from the group consisting of hydroxyl groups, free isocyanate groups and blocked isocyanate groups, the resin is present as particles with melting temperatures from 40 to 200° C., (B) at least one film-forming, self- or externally cross-linking AED binder different from resin (A), and (C) optionally, at least one component selected from the group consisting of cross-linking agents, paste resins, grinding resins, nonionic resins, fillers, pigments, fillers, extenders, coating additives and organic solvents; the AED coating compositions have a distinctly reduced or no edge migration behavior upon deposition and baking.

Abstract: The invention is directed to a process for multilayer coating of substrates which comprises a) applying a filler layer of a filler coating composition to a substrate, b) curing the resultant filler layer by irradiation with high energy radiation and c) applying a top coat layer to the cured filler layer and curing the top coat layer, whereby the filler coating composition comprises A) at least one binder capable of free-radical polymerization having fewer than three olefinic double bonds per molecule, B) at least one ester of alpha,beta-olefinically unsaturated monocarboxylic acids capable of free-radical polymerization having one olefinic double bond per molecule and C) at least one compound having at least one phosphoric acid group.

Abstract: A process for the production of a coating layer from a thermally curable coating composition on a substrate, comprising the successive steps: a) providing a substrate to be coated, b) applying a backing foil coated on one side with an uncured or at least only partially cured coating layer of a thermally curable coating composition, with its coated side on the entire surface or at least one sub-zone of the surface of the substrate, c) supplying thermal energy onto the entire coating applied in step b), and d) removing the backing foil from the coating which remains on the substrate; wherein the supply of thermal energy onto the coating proceeds prior to and/or after removal of the backing foil.