Abstract: Coating compositions having improved mar and scratch resistance are disclosed. The coatings generally comprise particles having a hardness sufficient to provide the desired level of scratch and/or mar resistance. The improved resistance is achieved without affecting the appearance or mechanical performance of the coatings. Methods for using the coatings, and the substrates coated therewith, are also disclosed.

Abstract: A crosslinking agent having reactive benzoxazine groups is provided.

Abstract: Provided is a crosslinking agent which is the ungelled reaction product of a polyester polyol and an aminotriazine compound having one or less non-alkylated NH bond per triazine ring. The polyester polyol is the reaction product of a cycloaliphatic polyol and a cyclic polycarboxylic acid or anhydride. The crosslinking agent is essentially free of hydroxyl functionality and has a glass transition temperature of at least 10° C. Further provided is a powder coating composition including a solid particulate film-forming mixture of a polymer containing reactive functional groups and having a Tg of at least 30° C., and the crosslinking agent. Additionally provided is a multi-layer composite coating composition having a basecoat layer deposited from a basecoat film-forming composition and a topcoat over the basecoat deposited from the previously described powder coating composition. Coated substrates are also provided.

Abstract: Two types of aminotriazine-based crosslinking agents are provided. Crosslinking agent I includes the ungelled reaction product of (A) a reactive urethane group-containing reaction product and (B) an aminotriazine compound having one or less non-alkylated NH bond per triazine ring. The reactive urethane group-containing reaction product (A) is the reaction product of (1) a polyester polyol, and (2) a mono-isocyanate. The crosslinking agent I is essentially free of urethane NH functionality and has a glass transition temperature of at least 25° C. Crosslinking agent II includes the ungelled reaction product of (A) a reactive urethane group-containing reaction product and (B) an aminotriazine compound having one or less non-alkylated NH bond per triazine ring. The reactive urethane group-containing reaction product (A) is the reaction product of (1) a polyisocyanate and (2) a monohydric capping agent.

Abstract: Two types of aminotriazine-based crosslinking agents are provided. Crosslinking agent I includes the ungelled reaction product of (A) a reactive urethane group-containing reaction product and (B) an aminotriazine compound having one or less non-alkylated NH bond per triazine ring. The reactive urethane group-containing reaction product (A) is the reaction product of (1) a polyester polyol, and (2) a mono-isocyanate. The crosslinking agent I is essentially free of urethane NH functionality and has a glass transition temperature of at least 25° C. Crosslinking agent II includes the ungelled reaction product of (A) a reactive urethane group-containing reaction product and (B) an aminotriazine compound having one or less non-alkylated NH bond per triazine ring. The reactive urethane group-containing reaction product (A) is the reaction product of (1) a polyisocyanate and (2) a monohydric capping agent.

Abstract: The present invention provides a crosslinking agent which may have reactive benzoxazine groups prepared from (a) at least one aromatic compound, (b) at least one aminotriazine compound, and (c) at least one other compound having active hydrogen groups reactive with aminoplast compound (b). The crosslinking agent is essentially free of hydroxyl functionality and has a glass transition temperature of at least 25° C. The present invention is further directed to a method for preparing the above-described crosslinking agent, and a curable powder coating composition comprising a mixture of (A) a polymer having functional groups reactive with aminotriazine and/or benzoxazine groups having a glass transition temperature of at least 30° C.; and (B) the above crosslinking agent. Multilayer composite coating compositions are also provided including a basecoat deposited from a film-forming composition and a topcoat over the basecoat, deposited from the curable powder coating composition described above.

Abstract: Cured coatings having particles at a surface region of the cured coating are provided. Also provided are multi-component composite coatings which include a cured basecoat deposited from a pigmented coating composition and a cured topcoat deposited from a topcoating composition. The multi-component composite coatings of the invention provide highly scratch resistant color-plus-clearcoatings capable of retaining scratch resistance after weathering.

Abstract: Improved powder coating compositions containing novel polysiloxanes having various reactive functional groups are disclosed. The compositions are particularly useful as thermosetting powder coating compositions where they provide excellent filiform corrosion resistance.

Abstract: A crosslinking agent is provided, prepared by reacting (A) an aminoplast resin; (B) a reactive urethane group-containing adduct and (C) at least one other compound having active hydrogen groups reactive with aminoplast resin (A).

Abstract: A crosslinking agent is provided, prepared by reacting (A) an aminoplast resin; (B) a reactive urethane group-containing adduct of a polyfunctional polymer and monoisocyanate, and (C) at least one other compound having active hydrogen groups reactive with aminoplast resin (A).

Abstract: A powder coating composition of a solid particulate film-forming mixture including (a) a carbamate group-containing polymer having a glass transition temperature of at least 30° C.; and (b) a curing agent having functional groups reactive with the carbamate functional groups of the polymer. Also provided is a multi-component composite coating composition characterized by a pigmented basecoat deposited from a pigmented film-forming composition and a substantially pigment-free top coat applied over the basecoat. The top coat is deposited from the powder coating composition. A method of forming a wrinkled coating on a substrate is further provided where a curable powder coating composition is prepared from a solid particulate film-forming mixture, applied to a substrate and thermally cured to form a continuous coating having a wrinkled surface. The solid particulate film-forming mixture includes (a) a carbamate functional group-containing polymer having a glass transition temperature at least 30° C.

Abstract: A crosslinking agent having reactive benzoxazine groups is provided. The crosslinking agent is the ungelled reaction product of a polyhydric aromatic compound and an aminotriazine compound having one or less non-alkylated NH bond per triazine ring. The crosslinking agent is essentially free of hydroxyl functionality and has a glass transition temperature of at least 10° C. Additionally provided is a method for preparing the crosslinking agent. Also provided is a curable powder coating composition including a solid particulate, film-forming mixture of a polymer having functional groups reactive with benzoxazine groups and the crosslinking agent. Further provided is a multilayer composite coating composition having a base coat layer deposited from a film-forming base coating composition and a topcoat layer deposited from the curable powder coating composition. Coated substrates are also provided.

Abstract: The invention provides powder coatings that consistently produce durable finishes when cured, and are stable when uncured. These powder coatings of the invention include novel film forming systems. The novel film forming system, in turn, includes a polymer component and a crosslinker component. In one embodiment, the polymer component is novel; and, in another embodiment, both the polymer and crosslinker components are novel. The novel polymer component includes a novel polyester polyol. This novel polyester polyol includes the reaction product of a cycloaliphatic component and a polyfunctional isocyanurate component. The novel crosslinker component which can be used when practicing certain embodiments of this invention includes a novel, polyfunctional isocyanate compound which is at least partially blocked with at least one of the following: a polyhydroxy aromatic compound, or a mixture of a polyhydroxy aromatic compound and a hydroxy-functional ester compound.

Abstract: The invention provides novel isocyanate-based compounds. Such novel compounds can be used in essentially all applications where conventional isocyanate-based compounds are employed. In other words, the novel isocyanate-based compounds can be used in the making of liquid and powder coating compositions, adhesives, rigid and moldable plastics and foams. The isocyanate-based compounds of the present invention include a polyfunctional isocyanate compound which is at least partially blocked with at least one of the following: a polyhydroxy aromatic compound, or a mixture of a polyhydroxy aromatic compound and a hydroxy-functional ester compound. The present invention further provides compositions which include the aforementioned novel isocyanate-based compound as a component. These compositions can be in the form of liquid coating compositions, powder coating compositions, powder slurry coating compositions, plastic compositions, adhesive compositions, or polymeric foam compositions.

Abstract: The invention provides powder coatings that produce consistent finishes when cured, and are stable when uncured. These powder coatings of the invention include novel film forming systems. The novel film forming system, in turn, includes a polymer component and a crosslinker component. In one embodiment, the crosslinker component is novel; and, in another embodiment, both the crosslinker and polymer components are novel. The novel crosslinker component includes a novel, polyfunctional isocyanate compound which is at least partially blocked with at least one of the following: a polyhydroxy aromatic compound, or a mixture of a polyhydroxy aromatic compound and a hydroxy-functional ester compound. The novel polymer component which can be used when practicing certain embodiments of this invention includes a novel polyester polyol. This novel polyester polyol includes the reaction product of a cycloaliphatic component and a polyfunctional isocyanurate component.

Abstract: Improved powder coating compositions containing novel polysiloxanes having various reactive functional groups are disclosed. The compositions are particularly useful as thermosetting powder coating compositions where they provide excellent filiform corrosion resistance.

Abstract: Disclosed are improved curable powder coating compositions comprised of a particulate, film-forming mixture of a polymer having reactive functional groups, and a curing agent therefor having functional groups reactive with the functional groups of the polymer and present in an amount sufficient to cure the coating composition, wherein the inclusion of a particular polyester which has carboxylic acid functional groups improves adhesion to metal, particularly aluminum, and filiform corrosion resistance.

Abstract: Improved powder coating compositions containing novel polysiloxanes having various reactive functional groups are disclosed. The compositions are particularly useful as thermosetting powder coating compositions where they provide excellent filiform corrosion resistance.

Abstract: A new UV curable pressure sensitive adhesive composition, which comprises in weight percent: about 0.1% to about 15% of a photoinitiator agent, about 10% to about 80% of a polyurethane resin with a pendent acrylate functionality, zero to about 70% by of an acrylate monomer, about 0.1% to about 25% by weight of a 1,2-vinyl polybutadiene component, and zero to about 50% by weight of a tackifier agent.

Abstract: A new UV curable pressure sensitive adhesive composition, which comprises in weight percent: about 0.1% to about 15% of a photoinitiator agent, about 10% to about 80% of a polyurethane resin with a pendent acrylate functionality, zero to about 70% by of an acrylate monomer, about 0.1% to about 25% by weight of a an acrylated polybutadiene component, and zero to about 50% by weight of a tackifier agent.