Abstract: The present invention provides a method for forming a coating film, comprising the steps of:(a) coating a metal panel with a cationic electrophoretic coating composition and heating the composition to form an electrophoretic coating,(b) applying to the electrophoretic coating an aqueous primer containing a polyurethane emulsion prepared by subjecting a carboxyl-containing urethane prepolymer to chain extension by water,(c) applying an intermediate coating composition to the primer surface,(d) baking the aqueous primer and the intermediate coating composition at the same time, and(e) applying a top coating composition to the cured coating and baking the composition.

Abstract: An aqueous color paint composition comprising(I) an aqueous dispersion of acrylic polymer fine particles,(II) a modified polyester resin aqueous dispersion obtained by neutralizing, with a basic substance, a modified polyester resin formed by polymerizing (A) a radical-polymerizable unsaturated group-containing polyester resin and (B) a mixture of an ethylenically unsaturated carboxylic acid and another copolymerizable unsaturated monomer and having an acid value of 8 to 200 and a hydroxyl value of 30 to 300, and dispersing the resulting resin in an aqueous dispersion medium,(III) a crosslinking agent, and(IV) a color pigment.The composition is, even if high-solid, good in coatability and excellent in smoothness of the coated film. It is therefore quite suitable as a high-solid base coat composition when coating an outside plate, etc. of automobiles, two-wheelers, electric appliances, etc. requiring beautiful appearance.

Abstract: A thermosetting coating composition comprising as essential components:(a) a hydroxyl group-containing base resin,(b) an alicyclic polyepoxide crosslinking agent, and(c) a catalyst selected from the group consisting of a quaternary ammonium hydroxide and a metal chelate.

Abstract: Disclosed is a coating method comprising the steps of applying a base coat composition to a substrate, applying a clear coating composition to the coated surface while the applied base coat composition is still uncured and curing the two coating compositions thus applied at the same time, the method being characterized in that the base coat composition is an aqueous one containing a coloring pigment and that the clear coating composition is a curable one containing a basal resin and a curing catalyst as main components, the basal resin being a resin (Y) having in the molecule hydroxyl group and/or hydrolyzable group both directly attached to the silicon atom, and epoxy group or a resin mixture (Z) of a resin or a compound (Z-1) having hydroxyl group and/or hydrolyzable group both directly attached to the silicon atom and a resin (Z-2) having epoxy group.

Abstract: A heat-curable resinous coating composition comprising as a binder component(A) 5 to 90% by weight of a hydroxyl-containing resin selected from hydroxyl-containing acrylic resins and hydroxyl-containing polyester resins,(B) 5 to 50% by weight of an amino resin, and(C) 1 to 90% by weight of a crosslinkable resin selected from (C-a) polyfunctional resins having a number average molecular weight of at least 1000 and containing at least two carboxyl groups and at least two epoxy groups on an average per molecule and (C-b) polyorganosiloxanes having a number average molecular weight of at least 500 and containing at least two silanol groups on an average per molecule and if required, further containing an epoxy group.

Abstract: A coating method characterized in that the method comprises the steps of applying a thermosetting coating composition containing a pigment to a substrate to be coated, applying a first clear coating composition to the coat to form a first clear coat, baking the two coats at the same time for curing, applying to the cured coats a second clear coating composition capable of forming a second clear coat having, when cured, a molecular weight between crosslinks of about 200 or less as determined by a xylene-swelling method and baking the second clear coat for curing.

Abstract: Disclosed is a finish coating method for forming a finish coat, comprising the steps of applying to a substrate a base coating composition containing a pigment and applying a clear top coating composition to the coated surface, the method being characterized in that the clear top coating composition is a curable one comprising predominantly a nonaqueous dispersion of a polymer of radically polymerizable monomer, the dispersion being prepared by polymerization of the radically polymerizable monomer in an organic solvent in which the monomer is soluble and in which the polymer produced from the monomer is insoluble and in the presence of a fluoroolefin polymer as a dispersion stabilizer which is soluble in the organic solvent and which has a weight-average molecular weight of about 5,000 to about 120,000 and a fluorine content of about 1 to about 60% by weight.

Abstract: This invention provides a metallic coating method comprising the steps of applying a thermosetting polymer coating composition containing no metallic flake pigment to an article to be coated to form a first layer, applying a high solids thermosetting polymer metallic coating composition to the first layer to form a second layer while the first layer retains a viscosity of about 3 to about 500 poises at 20.degree. C., applying a clear thermosetting polymer coating composition to the second layer to form a third layer and heating the coated article to cure the three layers at the same time.

Abstract: A thermosetting metallic coating composition of the organic solution type comprising a resin composition consisting of an acrylic resin and an amino resin, a metallic pigment, at least one organic solvent and water, the acrylic resin having carboxyl groups wholly or partially neutralized and the water being present in the coating composition in an amount, of about 10 to about 100 parts by weight per 100 parts by weight of the resin composition and of about 2 to about 40% by weight in the total amount of the water and the organic solvent.