Abstract: The present invention provides a powder coating composition comprising at least one glycidyl-functionalised (meth) acrylic resin, 1 to 30 wt %, the wt % based on the total weight of component A), of at least one hydroxyl-functionalised alkyl acrylate alkyl methacrylate copolymer, and at least one component selected from the group consisting of pigments, fillers, cross-linking agents and/or coating additives different from component B). The powder coating composition of this invention can provide coatings having improved impact resistance, corrosion stability, heat resistance and weather resistance. The powder coating also has good properties including good flow behavior and durability against aggressive substances, such as, inorganic acids.

Abstract: The present invention provides a powder coating composition comprising A) at least one glycidyl-functionalised (meth) acrylic resin, B) 1 to 30 wt %, the wt % based on the total weight of component A), of at least one hydroxyl-functionalised alkyl acrylate alkyl methacrylate copolymer, and C) at least one component selected from the group consisting of pigments, fillers, cross-linking agents and/or coating additives different from component B). The powder coating composition of this invention comprising the at least one hydroxyl-functionalised alkyl acrylate alkyl methacrylate copolymer may provide coatings having a highly improved impact resistance, high corrosion stability and heat resistance, and, surprisingly, a high weather resistance (superdurability), by keeping the superior technology properties of the coating such as good flow behaviour and durability against aggressive substances, such as, inorganic acids.

Abstract: A powder coating composition obtained by homogeneous mixing of at least two separately produced powder coating compositions comprising (A) at least one powder coating base prepared from one or more glycidyl-functionalised (meth)acrylic resin, one or more di-carboxylic acid or the anhydrides thereof having an acid value in the range of higher 400 as hardener (cross-linker), together with at least one coating additive, and optionally pigment and/or filler, and (B) at least one powder coating base prepared from one or more glycidyl-functionalised (meth)acrylic resins, one or more hardeners (cross-linkers) having an acid value in the range of 100 to 400, together with at least one coating additive, and optionally pigment and/or filler, in a mixing ratio of component A) to component B) of 1:3 to 3:1, relative to the weight; the composition provides coatings with a desired gloss level and is curable at a temperature under 180° C.

Abstract: Process for the production of powder finishes on metallic or non-metallic surfaces, characterized in that powder coating compositions are used which contain resins which may be crosslinked by means of functional groups capable of forming hydrogen bonds, wherein the functional groups are present at a concentration of greater than 100 mmol/kg of powder coating composition, the powder coating compositions are applied to the substrate and are melted and cured by NIR irradiation.