Abstract: A powder coating composition can include: a polyester polymer having carboxylic acid functional groups; a first crosslinker reactive with the carboxylic acid functional groups of the polyester polymer; and a fluoropolymer unreactive with the polyester polymer and first crosslinker. A weight ratio of the polyester polymer to the fluoropolymer is from 80:20 to 60:40. When cured, the powder coating composition forms a single coating layer including the polyester polymer and the fluoropolymer.

Abstract: A powder coating composition can include: a polyester polymer comprising carboxylic acid functional groups; a crosslinker reactive with the carboxylic acid functional groups of the polyester polymer; and a thermoplastic fluoropolymer unreactive with the polyester polymer and crosslinker. The powder coating composition is substantially free of an isocyanate functional crosslinker.

Abstract: A powder coating composition can include: a polyester polymer comprising carboxylic acid functional groups; a crosslinker reactive with the carboxylic acid functional groups of the polyester polymer; and a thermoplastic fluoropolymer unreactive with the polyester polymer and crosslinker. The powder coating composition is substantially free of an isocyanate functional crosslinker.

Abstract: A coating composition including a fluoropolymer and a phosphatized acrylic polymer is disclosed, as well as a substrate at least partially coated with the coating composition. A coating composition including a fluoropolymer, an acrylic polymer, and an adhesion promoter including: an anionic clay, a cationic clay, a chelating agent, a zinc-containing compound, a magnesium-containing compound, a manganese-containing compound, or some combination thereof is also disclosed, as well as a substrate at least partially coated with the coating composition.

Abstract: Composite coated metal and/or polymer substrates are provided having a powder basecoat thereon formed from at least one film-forming material comprising a thermosettable polyester and a curing agent; at least one reaction product of at least one cyclic carboxylic acid anhydride, at least one alkene and at least one reactant selected from the group consisting of primary amines, aliphatic polyamines, primary amino alcohols, alcohols, isocyanates and mixtures thereof, the copolymer having a number average molecular weight ranging from about 1,000 to about 20,000; and at least one flow control agent; and a topcoat deposited from a liquid or powder slurry topcoating composition applied over the basecoat to form a composite coating providing good adhesion and chip and cratering resistance.

Abstract: A process for applying a two-tone color effect coating to a substrate including applying an accent powder basecoating composition including film-forming material; reaction product as described herein; flow control agent; and first color effect additive, to a first predetermined portion of a surface of a substrate; at least partially curing the accent basecoating; applying a main liquid or powder basecoating composition having a different color effect additive to a second predetermined portion of the substrate, such that a portion of the accent basecoat is not contacted by the main basecoating composition; at least partially curing the main basecoating composition; applying a topcoating composition over the accent basecoat and main basecoat and curing the resulting composite coating, such that the first portion of the substrate has a different color effect than the second portion of the substrate to provide a two-tone color effect coated substrate.

Abstract: A method of forming a composite coating is provided including (a) applying a first powder base coating to a substrate; and (b) either (1) applying a second powder base coating comprising flake or platelet effect pigment and heating the first and second base coats to substantially level the second base coat and allow migration of the effect pigment to a surface region thereof but not sufficient to cause the second base coat to cure; and (2) applying a top coating and substantially curing the resultant composite coating; or alternatively, (3) heating the first base coat to form a generally continuous film; (4) applying the second powder base coating comprising the effect pigment and heating the second base coat to substantially level the second base coat and allow migration of the effect pigment to a surface region thereof; and (5) applying the top coating and substantially curing the resultant composite coating.

Abstract: Powder paint compositions are based on a polymeric binder comprising hydroxyl functional acrylic polymer and cyclic silicone resin adapted to coreact upon heating in the presence of at least 0.1% phosphonium salt catalyst.

Abstract: Thermosetting powder paints are produced from functional fluorocarbon resins adapted to be coreactive with a blocked diisocyanate upon heating. Preferred compositions can further contain hydroxyl functional acrylic polymers or polyester polymers which can coreact with the unblocked diisocyanate upon heat curing of the powder paint film.

Abstract: A powder paint coating is based upon a thermosetting polymeric binder comprising a hydroxyl functional arcylic copolymer adapted to coreact upon heating with solid cyclic silicone resin.

Abstract: Thermosetting powder coatings are based on a blend of coreactive polymers comprising a glycidyl acrylic polymer adapted to be crosslinked by a solid cyclic silicone resin having functional hydroxyl and/or methylol groups for coreacting with the glycidyl functionality on the acrylic polymer.