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: Disclosed is an aqueous resin dispersion prepared by dispersing in an aqueous medium a graft resin (A) and a hydrophobic melamine resin (B), said graft resin (A) having a weight average molecular weight of 10,000 to 100,000 and an acid value of 5 to 80, and consisting of a hydrophobic main chain moiety and a hydrophilic side chain moiety, said hydrophilic side chain moiety being 5,000 to 50,000 in weight average molecular weight and at least 20 in acid value.

Abstract: Disclosed are (1) a water-dispersible resin composition prepared by a process comprising; (I) reacting a silane monomer (A) having hydrolytic functional group and/or silano group and polymerizable unsaturated bond with a vinyl monomer (B) in an aqueous medium to obtain a three-dimensionally crosslinked particulate polymer, (II) reacting the particulate polymer with the silane monomer (A) and/or an allyl acrylate or allyl methacrylate (C), and (III) copolymerizing the resulting reaction product with a vinyl monomer component comprising a carboxyl-containing vinyl monomer (D), followed by neutralizing the carboxyl group; (2) a water-dispersible coating composition comprising a crosslinking agent and the water-dispersible resin composition prepared using a hydroxyl-containing vinyl monomer and another vinyl monomer as the vinyl monomer (B) in the step (I), and (3) a coating method characterized by using as a base coat composition a water-dispersible coating composition comprising the foregoing water-dispersible

Abstract: Disclosed are (1) a water-dispersible resin composition prepared by a process comprising; (I) reacting a silane monomer (A) having hydrolytic functional group and/or silanol group and polymerizable unsaturated bond with a vinyl monomer (B) in an aqueous medium to obtain a three-dimensionally crosslinked particulate polymer, (II) reacting the particulate polymer with the silane monomer (A) or a mixture of the silane monomer (A) and an allyl acrylate or allyl methacrylate (C), and (III) copolymerizing the resulting reaction product with a vinyl monomer component comprising a carboxyl-containing vinyl monomer (D), followed by neutralizing the carboxyl group; (2) a water-dispersible coating composition comprising a crosslinking agent and the water-dispersible resin composition prepared using a hydroxyl-containing vinyl monomer and another vinyl monomer as the vinyl monomer (B) in the step (I), and (3) a coating method characterized by using as a base coat composition a water-dispersible coating composition compri

Abstract: Disclosed is an aqueous coating composition characterized in that the composition consists essentially of:(A) a resin for use in aqueous coating compositions,(B) a urethane resin emulsion, and(C) crosslinking agent,the component (B) being an aqueous dispersion of a polyurethane resin prepared by reacting (a) an aliphatic polyisocyanate and/or an alicyclic polyisocyanate, (b) a high-molecular-weight polyol, (c) an .alpha.,.alpha.-dimethylolmonocarboxylic acid, and when required, (d) a chain lengthening agent and/or a polymerization terminator, and subsequently neutralizing the carboxyl with (e) a primary monoamine and/or a secondary monoamine.

Abstract: Desclosed is an aqueous coating composition characterized in that the composition consists essentially of:(A) a resin for use in aqueous coating compositions,(B) a urethane resin emulsion, and(C) crosslinking agent,the component (B) being an aqueous dispersion of a polyurethane resin prepared by reacting (a) an aliphatic polyisocyanate and/or an alicyclic polyisocyanate, (b) a high-molecular-weight polyol, (c) an .alpha.,.alpha.-dimethylolmonocarboxylic acid, and when required, (d) a chain lengthening agent and/or a polymerization terminator, and subsequently neutralizing the carboxyl with (e) a primary monoamine and/or a secondary monoamine.

Abstract: An aqueous coating composition characterized in that the composition comprises:(A) a water-dispersible film-forming acrylic polymer,(B) a crosslinking agent prepared by dispersing a hydrophobic melamine resin in water in the presence of a water-soluble resin, the hydrophobic melamine resin being up to about 20 in solvent dilution ratio when diluted with a water/methanol solvent mixture (35/65 in weight ratio) and about 500 to about 4000 in weight average molecular weight, and(C) a pigment.The composition is very suitable for use in the two-coat one-bake coating method as a base-coat composition.