Abstract: A process to form a multilayer coating film, which is excellent in smoothness and capable of preventing a generation of popping even in case of a thick coating, characterized by that after a cationic electrodeposition coating is coated and cured by heating, an intermediate coating, comprising polymerizable unsaturated compound, photopolymerization initiator, thermal polymerization initiator, and further optionally pigment and/or polyester resin and crosslinking agent, is coated, and the coating film is cured by irradiation with an actinic ray, and then a thermocurable top coating is coated and cured by heating, is disclosed.

Abstract: This invention is directed to a method of pattern coating, comprising the steps of: coating a substrate with an aqueous colored coating composition comprising a neutralization product of an acrylic copolymer containing an alkoxysilyl group and a carboxyl group and a coloring pigment, using a spray device having a fine-orifice nozzle(s) to give a pattern coating layer, and coating the pattern coating layer with a clear coating composition.

Abstract: The present invention provides a cationic electrodepositable coating composition comprising:?I! a polyurethane-modified epoxy resin-amine adduct obtained by a reaction of:(A) a polyurethane compound having one terminal isocyanate group in the molecule, obtained by a reaction of (a) a polyhydroxy compound having a number-average molecular weight of 50-8,000, (b) a polyisocyanate compound, and (c) a compound having one active hydrogen atom in the molecule,(B) a bisphenol type epoxy resin having at least two epoxy groups in the molecule, and(C) an active-hydrogen-containing amine compound, and ?II! a nonionic film-forming resin.This composition can form a coating film having excellent weathering resistance and corrosion resistance and, when used in combination with an aqueous base coating and a powder coating (a top coat), can provide a coating system which is simple to apply, which can give a coating film very superior in appearance, corrosion resistance, weathering resistance, chipping resistance, etc.

Abstract: The present invention provides a coating method which comprises applying, onto a material to be coated, a cationic electrodepositable coating composition comprising (A) a polyurethane-modified epoxy resin-amine adduct obtained by a reaction of (A-1) a polyurethane-compound having one terminal isocyanate group in the molecule, obtained by a reaction of (a) a polyhydroxy compound having a number-average molecular weight of 50-8,000, (b) a polyisocyanate compound, and (c) a compound having one active hydrogen atom in the molecule; (A-2) a bisphenol type epoxy resin having at least two epoxy groups in the molecule; and (A-3) an active-hydrogen-containing amine compound, and (B) a nonionic film-forming resin, the weight ratio of the resin (A)/the resin (B) being 15/85 to 95/5 and the coating composition comprising substantially no pigment, then heat-curing the formed electrocoating film; and thereafter applying, onto the cured electrocoating film, an aqueous coating composition comprising a metallic pigment and/or

Abstract: A heat-curable coating composition comprising as a binder(A) an oil-free polyester in which at least 30 mole % of the acid component consists of a saturated alicyclic polybasic acid, said polyester having a composition on or within the four sides of a tetragon defined by four points of (0.8, 60), (0.8, 100), (1.00, 70) and (1.00, 100), on coordinates in which the abscissa represents the molar ratio of the polybasic acids to the polyhydric alcohols (dibasic acid ratio) and the ordinate represents the proportion in mole % of a glycol having at least 3 carbon atoms in the polyhydric alcohols,(B) an alkyd resin having an oil length of 15 to 50% and a hydroxyl value of 40 to 200,(C) a hydroxyl-containing acrylic resin having a hydroxyl value of 20 to 200 and a number average molecular weight of 1,000 to 30,000, and(D) a crosslinking agent.