Abstract: A multi-layer coating film-forming method which comprises coating a cationic electrodeposition coating composition (A) containing a blocked polyisocyanate compound as a crosslinking agent and bismuth hydroxide to form a non-cured electrodeposition coating film, coating a water based intercoat coating composition (B1) containing a hydroxyl group and carboxyl group-containing base resin, a blocked polyisocyanate crosslinking agent, a fine aluminum powder and a titanium oxide white pigment onto the non-cured electrodeposition coating film to form a non-cured intercoat coating film, followed by heat curing both coating films simultaneously.

Abstract: The present invention provides a method for forming a multi-layer paint film, comprising: applying a cationic electrodeposition paint containing a block polyisocyanate compound as a cross-linking agent on a surface of a painted matter, applying a water based intermediate coat paint containing a block polyisocyanate compound as a cross-linking agent on an electrodeposition paint film surface without curing the electrodeposition paint film to form an intermediate coat paint film, and then heating to cure both of the electrodeposition paint film and the intermediate coat paint film at the same time to thereby form a multi-layer paint film, wherein the above cationic electrodeposition paint contains a tin base catalyst of at lest 10 parts by weight per 100 parts by weight of the resin solid matter, and a cross-linking curing reaction in the electrodeposition paint film is controlled so that it starts earlier than a cross-linking curing reaction in the intermediate coat paint film.

Abstract: The present invention provides a method for forming a multi-layer paint film, comprising: applying a cationic electrodeposition paint containing a block polyisocyanate compound as a cross-linking agent on a surface of a painted matter, applying a water based intermediate coat paint containing a block polyisocyanate compound as a cross-linking agent on an electrodeposition paint film surface without curing the electrodeposition paint film to form an intermediate coat paint film, and then heating to cure both of the electrodeposition paint film and the intermediate coat paint film at the same time to thereby form a multi-layer paint film, wherein the above cationic electrodeposition paint contains a tin base catalyst of at least 10 parts by weight per 100 parts by weight of the resin solid matter, and a cross-linking curing reaction in the electrodeposition paint film is controlled so that it starts earlier than a cross-linking curing reaction in the intermediate coat paint film.

Abstract: In a coating film formation method in which the thermosetting water-borne color paint (A) is coated on the surface of the substrate, then a thermosetting water-borne paint containing color pigment and/or glittering pigment (B) is coated on said coated surface, and, after predrying as necessary, a thermosetting clear paint (C) is coated and after that said 3-layer coating films of (A), (B) and (C) are simultaneously cured by heating, the solid content of the wet coat is controlled by an air jet step in which the air, whose temperature and/or humidity are controlled, is jetted from behind the paint nozzle in approximately the same direction as the atomized particles of said thermosetting water color paint (A) move to the surface of the substrate, when said paint is coated, around the spray pattern so that the air touches said pattern.

Abstract: The present invention provides a method for forming a multi-layer paint film, comprising:

Abstract: The present invention provides a method for forming a multi-layer paint film, comprising:

Abstract: In a coating film formation method in which the thermosetting water-borne color paint (A) is coated on the surface of the substrate, then a thermosetting water-borne paint containing color pigment and/or glittering pigment (B) is coated on said coated surface, and, after predrying as necessary, a thermosetting clear paint (C) is coated and after that said 3-layer coating films of (A), (B) and (C) are simultaneously cured by heating, the solid content of the wet coat is controlled by an air jet step in which the air, whose temperature and/or humidity are controlled, is jetted from behind the paint nozzle in approximately the same direction as the atomized particles of said thermosetting water color paint (A) move to the surface of the substrate, when said paint is coated, around the spray pattern so that the air touches said pattern.

Abstract: The present invention provides a coating composition which is excellent in a curing property (particularly a low temperature curing property) of a coating film and which forms a coating film having excellent chipping resistance and adhesive property, and it comprises a hydroxyl group-containing resin (A), a cross-linking agent (B) and a phosphoric acid group-containing vinyl resin (C).

Abstract: A multi-layer coating film-forming method which comprises coating a cationic electrodeposition coating composition (A) containing a blocked polyisocyanate compound as a crosslinking agent to form a non-cured electrodeposition coating film, coating a water based intercoat coating composition (B1) containing a hydroxyl group and carboxyl group-containing base resin, a blocked polyisocyanate crosslinking agent, a fine aluminum powder and a titanium oxide white pigment onto the non-cured electrodeposition coating film to form a non-cured intercoat coating film, followed by heat curing both coating films simultaneously.

Abstract: The present invention provides a method for forming a multi-layer paint film, comprising: applying a cationic electrodeposition paint containing a block polyisocyanate compound as a cross-linking agent on a surface of a painted matter, applying a water based intermediate coat paint containing a block polyisocyanate compound as a cross-linking agent on an electrodeposition paint film surface without curing the electrodeposition paint film to form an intermediate coat paint film, and then heating to cure both of the electrodeposition paint film and the intermediate coat paint film at the same time to thereby form a multi-layer paint film.

Abstract: The present invention provides a method for forming a plural layer coating film which is particularly suited to top coating for an outside plate part of a car, wherein a first water based coating material is applied onto an article to be coated, and a gel content of a coating film formed is controlled to 5% by weight or more; then, a second water based coating material is applied, and moisture contained in a coating film formed is volatilized; then, a clear coating material is applied, and the resulting three layer coating films are heated to cure at the same time.

Abstract: The present invention provides an aqueous colored base coating composition (A) comprising a hydroxyl- and carboxyl-containing acrylic resin (A-1), a melamine resin (A-2), an alicyclic epoxy-containing compound (A-3), a neutralizing agent (A-4) and a coloring pigment (A-5). The present invention further provides a method for forming a topcoat which comprises applying the aqueous colored base coating composition (A) to a substrate and applying to the base coat an organic solvent type clear coating composition (B) to be cured by the crosslinking reaction between a carboxyl group and an epoxy group.

Abstract: A method for forming a multi-layer metallic coating film, the method being a 3-coat system comprising the steps of applying the following coating compositions (A), (B) and (C) in this order to a metal substrate coated with a cationically electrodepositable coating composition; (A) an organic solvent-based thermosetting metallic first base coating composition which comprises a neutralized carboxyl-containing resin having an acid value of 5 to 100 mg KOH/g, an amino resin and a metallic pigment, the composition having a substrate-hiding power corresponding to up to 3% transmittance of light at a wavelength of 400 to 700 nm in a 15 .mu.m-thick cured coating film, (B) an aqueous thermosetting second base coating composition which has a transparency corresponding to 10 to 95% transmittance of light at a wavelength of 400 to 700 nm in a 15-.mu.m thick cured coating film, and (C) an organic solvent-based thermosetting clear coating composition.

Abstract: The present invention provides a method for forming a topcoat which comprises applying an aqueous colored base coating composition comprising a hydroxyl- and carboxyl-containing acrylic resin, a melamine resin, an alicyclic epoxy-containing compound, a neutralizing agent, and a coloring pigment to a substrate and applying to the base coat an organic solvent type clear coating composition to be cured by the crosslinking reaction between a carboxyl group and an epoxy group.

Abstract: This invention provides a process to form a coated film characterized in that, after a cationically electrodeposition paint is applied on a metal-made article to be coated and is heat-cured, the surface of the resulting electrodeposition coated film is coated with an aqueous primer, which is mainly composed of such a thermoplastic polyurethane resin as is produced by subjecting a carboxyl group-containing urethane prepolymer to chain extension in the presence of an aqueous medium, and, successively, with an aqueous base paint, and, next, with a clear paint, and that the resulting three-layer coated films are heated and are thereby cured simultaneously. By this process, there can be formed a multi-layer coated film excellent in chipping-resistance, corrosion-resistance, weatherability and physical performances.

Abstract: A process for forming an overcoat by the two-coat one-bake method wherein a base coat composition and a clear coat composition are applied to a substrate ##STR1## wet-on-wet and thereafter cured at the same time by heating, the process being characterized in that the base coat composition is an aqueous coating composition consisting primarily of: (I) an aqueous dispersion or solution of a polymer containing a crosslinkable functional group, (II) a crosslinking agent, (III) a coloring pigment, and (IV) water, the clear coat composition being a coating composition comprising: (A) at least one resin selected from the group consisting of (i) a resin having at least one epoxy group and at least one hydroxyl group in the molecule, (ii) a resin mixture of (ii-1) a resin having at least two epoxy groups in the molecule and (ii-2) a resin having at least two hydroxyl groups in the molecule, (iii) a resin having at least two epoxy groups in the molecule, and (iv) any mixture thereof, (B) a crosslinking agent comprising

Abstract: A process for forming an overcoat by the two-coat one-bake method wherein a basecoat composition and a clear coat composition are applied to a substrate wet-on-wet and thereafter cured at the same time by heating, the process being characterized in that the base coat composition is a coating composition consisting primarily of a hydroxyl-containing resin, an amine resin, a pigment and an organic solvent, the clear coat composition being a coating composition comprising:(A) at least one resin selected from the group consisting of (i) a resin having at least one epoxy group and at least one hydroxyl group in the molecue, (ii) a resin mixture of (ii-1) a resin having at least two epoxy groups in the molecule and (ii-2) a resin having at least two hydroxyl groups in the molecule, (iii) a resin having at least two epoxy groups in the molecule, and (iv) any mixture thereof,(B) a crosslinking agent comprising a compound having at least two noncyclic acid anhydride groups and represented by the formula ##STR1## where

Abstract: A method for forming a coating film by sequentially forming a pigmented base coat and a clear top coat on a substrate. The pigmented base coat composition includes (1) an OH-containing resin, (2) an amino resin, (3) a polyorganosiloxane resin a number average molecule weight of at least 1,000 and having at least two groups per molecule selected from a silanol group and an alkoxysilane group and (4) a flaky metal or a mica powder in (5) an organic solvent. The clear top coat composition includes (1) an OH- and epoxy-containing base resin which additionally contains at least one of a silanol group and a hydrolyzable group bound directly to a silicon atom, (2) a curing catalyst and (3) an organic solvent.

Abstract: The invention provides a method of forming a coating film by forming in sequence a pigmented base coat and a clear top coat on a substrate followed by finishing by the two-coat one-bake technique, the method being characterized by using, as a coating composition for pigmented base coat formation, a composition comprising, as essential components thereof,(1) an OH-containing resin,(2) an amino resin,(3) a polyorganosiloxane which has, on an average, at least two groups, per molecule, each selected from the class consisting of a silanol group and an alkoxysilane group and has a number average molecular weight of at least 1,000,(4) a metal chelate compound(5) a flaky metal powder and/or a mica powder, and(6) an organic solvent,and using, as a coating composition for clear top coat formation, a composition comprising, as essential components thereof,(1) an OH- and epoxy-containing base resin which further contains at least one group selected from the group consisting of a silanol group and a hydrolyzable group bo

Abstract: The invention provides a method of forming a coating film by forming in sequence a pigmented base coat and a clear top coat on a substrate followed by finishing by the two-coat one-bake technique, the method being characterized by using, as a coating composition for pigmented base coat formation, a composition comprising, as essential components thereof,(1) an OH-containing resin,(2) an amino resin,(3) a polyorganosiloxane(4) a flaky metal powder and/or a mica powder, and( 5 ) an organic solvent,and using, as a coating composition for clear top coat formation, a composition comprising, as essential components thereof,(1) an OH-containing base resin which further contains at least one group selected from the class consisting of a silanol group and a hydrolyzable group bound directly to a silicon atom,( 2 ) an amino resin, and( 3 ) an organic solvent.