Abstract: This invention provides a method for producing a pigment-dispersing resin which contains divalent group(s) represented by a general formula (I): (in which R1 stands for C1-10 alkylene group, m is an integer of 1-30, and the m recurring units, ?may be the same or different), phosphoric acid group(s) and/or sulfonic acid group(s), characterized by copolymerizing a polymerizable unsaturated monomeric mixture in a reaction solvent containing at least 30 mass %, based on the total mass of the reaction solvent, of an organic solvent having no hydroxyl group and having a solubility in 20° C. water of at least 100 mass %.

Abstract: The invention discloses specific polyester resins which are obtained by the technique of reacting polyesterpolyol oligomer of specific monomeric composition further with polyvalent carboxylic acid (anhydride) and the like; thermosetting water-borne coating compositions using the polyester resins, and coating film-forming methods using the thermosetting water-borne coating compositions.

Abstract: An object of the present invention is to provide a coating composition capable of forming a cured coating film with excellent scratch resistance, acid resistance, stain resistance, and finished appearance. The present invention provides coating composition comprising (A) carboxy-containing polymer, (B) epoxy-containing acrylic resin, and (C) carboxy-containing reaction product with an acid value of 50 to 200 mg KOH/g and a number average molecular weight of 600 to 5,000 obtained by a half-esterification reaction of an acid anhydride with a polycarbonate polyol having three or more hydroxyl groups per molecule.

Abstract: The present invention discloses a thermosetting aqueous paint, comprising an oligomer (A-1), having a specific acid value, hydroxyl value and number average molecular weight, and obtained by reacting a compound having at least one hydroxyl group and at least one carboxyl group in a molecule thereof, a monoepoxide compound having a long-chain hydrocarbon group, and as necessary, a polyvalent carboxylic acid and/or polyvalent carboxylic acid anhydride, and/or a polyester resin (A-2) obtained by further reacting a polyvalent carboxylic acid and/or a polyvalent carboxylic acid anhydride and/or a polyisocyanate compound with the oligomer, and a crosslinking agent (B); and also discloses a method for forming a paint film using this paint.

Abstract: The present invention provides a coating composition for cans comprising 100 parts by mass of a neutralized acrylic resin-modified epoxy resin (A), and from 1 to 50 parts by mass of anionic polymer crosslinked fine particles (B), (A) and (B) being dispersed in an aqueous medium, wherein the anionic polymer fine particles (B) are polymer fine particles comprising a polymer having an acid value of from 10 to 120 mg KOH/g and being produced by polymerizing radically polymerizable unsaturated monomers comprising from 2 to 30% by mass of a carboxyl group-containing radically polymerizable unsaturated monomer (b1), from 2 to 30% by mass of a polyvinyl compound (b2) and from 40 to 96% by mass of other radically polymerizable unsaturated monomer (b3) in the presence of water.

Abstract: The invention discloses specific polyester resins which are obtained by the technique of reacting polyesterpolyol oligomer of specific monomeric composition further with polyvalent carboxylic acid (anhydride) and the like; thermosetting water-borne coating compositions using the polyester resins, and coating film-forming methods using the thermosetting water-borne coating compositions.

Abstract: This invention offers an aqueous urethane resin composition which contains a urethane resin obtained through reaction of acrylic polyol formed by copolymerization of carbonyl functional group-containing unsaturated monomer, hydrophilic group-containing unsaturated monomer and, where necessary, still other unsaturated monomer; with polyisocyanate compound and, where necessary, carboxyl group-containing diol; can form film of excellent physical properties such as spreadability and flexibility; and becomes ambient temperature-curable when combined with a crosslinking agent.

Abstract: An aqueous resin composition obtained by emulsion polymerization using a polymerizable unsaturated monomer (b) in the presence of an aqueous resin dispersion (A) comprising an acid-modified polyolefin (a), an ether-based solvent and a basic substance. Also, an aqueous coating composition comprising an aqueous resin dispersion (B) obtained by emulsion polymerization of a polymerizable unsaturated monomer (b) in the presence of an aqueous resin dispersion (A) containing an acid-modified polyolefin (a), an ether-based solvent and a basic substance, with resin beads (C), wherein the content of resin beads (C) is 1-30 parts by mass with respect to 100 parts by mass of the total resin solid content of the coating material. The composition has excellent adhesion for plastic bases and allows formation of coated films with excellent water resistance, stain resistance, damage resistance and solvent resistance.

Abstract: This invention provides a process for producing an aqueous resin dispersion in which the average particle diameter of the dispersed resin is not more than 500 nm, comprising finely dispersing a monomeric mixture (I) containing (A) fatty acid-modified polymerizable unsaturated monomer and (B) other polymerizable unsaturated monomer which is copolymerizable with the monomer (A) in an aqueous medium in such a manner that the dispersed particles have an average particle diameter not more than 500 nm, and polymerizing the resulting emulsified product. The invention also provides aqueous resin compositions which comprise the aqueous resin dispersions, and water-based paint compositions which comprise the aqueous resin compositions.

Abstract: This invention provides a method for producing a pigment-dispersing resin which contains divalent group(s) represented by a general formula (I): (in which R1 stands for C1-10 alkylene group, m is an integer of 1-30, and the m recurring units, may be the same or different), phosphoric acid group(s) and/or sulfonic acid group(s), characterized by copolymerizing a polymerizable unsaturated monomeric mixture in a reaction solvent containing at least 30 mass %, based on the total mass of the reaction solvent, of an organic solvent having no hydroxyl group and having a solubility in 20° C. water of at least 100 mass %.

Abstract: The present invention discloses a thermosetting aqueous paint, comprising an oligomer (A-1), having a specific acid value, hydroxyl value and number average molecular weight, and obtained by reacting a compound having at least one hydroxyl group and at least one carboxyl group in a molecule thereof, a monoepoxide compound having a long-chain hydrocarbon group, and as necessary, a polyvalent carboxylic acid and/or polyvalent carboxylic acid anhydride, and/or a polyester resin (A-2) obtained by further reacting a polyvalent carboxylic acid and/or a polyvalent carboxylic acid anhydride and/or a polyisocyanate compound with the oligomer, and a crosslinking agent (B); and also discloses a method for forming a paint film using this paint.

Abstract: The present invention provides a coating composition for cans comprising 100 parts by mass of a neutralized acrylic resin-modified epoxy resin (A), and from 1 to 50 parts by mass of anionic polymer crosslinked fine particles (B), (A) and (B) being dispersed in an aqueous medium, wherein the anionic polymer fine particles (B) are polymer fine particles comprising a polymer having an acid value of from 10 to 120 mg KOH/g and being produced by polymerizing radically polymerizable unsaturated monomers comprising from 2 to 30% by mass of a carboxyl group-containing radically polymerizable unsaturated monomer (b1), from 2 to 30% by mass of a polyvinyl compound (b2) and from 40 to 96% by mass of other radically polymerizable unsaturated monomer (b3) in the presence of water.

Abstract: This invention provides a process for producing an aqueous resin dispersion in which the average particle diameter of the dispersed resin is not more than 500 nm, comprising finely dispersing a monomeric mixture (I) containing (A) fatty acid-modified polymerizable unsaturated monomer and (B) other polymerizable unsaturated monomer which is copolymerizable with the monomer (A) in an aqueous medium in such a manner that the dispersed particles have an average particle diameter not more than 500 nm, and polymerizing the resulting emulsified product. The invention also provides aqueous resin compositions which comprise the aqueous resin dispersions, and water-based paint compositions which comprise the aqueous resin compositions.

Abstract: A blocked isocyanate group-containing resin composition and a thermosetting resin composition using the same that comprise a resin (C) obtainable by modifying a resin (A) having two or more blocked isocyanate groups of a specific molecular structure in one molecule with a specific monohydric alcohol (B), and by replacing the substituent of the blocked isocyanate groups with a group having a larger number of carbon atoms, thereby lowering solubility parameter value. The compositions exhbit good storage stability and good compatibility with base resins for paint.

Abstract: A blocked isocyanate group-containing resin composition and a thermosetting resin composition using the same that comprise a resin (C) obtainable by modifying a resin (A) having two or more blocked isocyanate groups of a specific molecular structure in one molecule with a specific monohydric alcohol (B), and by replacing the substituent of the blocked isocyanate groups with a group having a larger number of carbon atoms, thereby lowering solubility parameter value. The compositions exhbit good storage stability and good compatibility with base resins for paint.

Abstract: An aqueous matte coating composition containing an aqueous dispersion (I) prepared by dispersing into water (B) a water-dispersible vinyl copolymer prepared by subjecting a monomer mixture of radically polymerizable unsaturated monomers including an unsaturated monomer having a polymerizable unsaturated double bond and an alkoxysilyl group in one molecule to radical polymerization in the presence of (A) a silicate compound consisting of organosilicate and/or its condensate, having an alkoxysilyl group, an acid value of 15 to 150 mg KOH/g and a hydroxyl value of 30 to 200 mg KOH/g, and including the silicate compound (A), and (C) a melamine resin not having complete compatibility with the vinyl copolymer (B).

Abstract: An aqueous matte coating composition containing an aqueous dispersion (I) prepared by dispersing into water (B) a water-dispersible vinyl copolymer prepared by subjecting a monomer mixture of radically polymerizable unsaturated monomers including an unsaturated monomer having a polymerizable unsaturated double bond and an alkoxysilyl group in one molecule to radical polymerization in the presence of (A) a silicate compound consisting of organosilicate and/or its condensate, having an alkoxysilyl group, an acid value of 15 to 150 mg KOH/g and a hydroxyl value of 30 to 200 mg KOH/g, and including the silicate compound (A), and (C) a melamine resin not having complete compatibility with the vinyl copolymer (B).

Abstract: The present invention provides a thermosetting powder coating composition comprising: (A) an epoxy-containing resin; and (B) a curing agent containing, as an essential ingredient, an acid anhydride (a) represented by the formula HOOC—(CH2)m—[COO—CO—(CH2)m]n—COOR1   (1) wherein R1 represents a C1-10 monovalent saturated hydrocarbon group, m is an integer of 6 to 18, and n is a number of 1 to 20 on average, the molar ratio of carboxyl groups to acid anhydride groups in the curing agent being in the range from 0.15:1 to 2.0:1, the molar ratio of the total of carboxyl groups and acid anhydride groups in the curing agent (B) to epoxy groups in the epoxy-containing resin (A) being in the range from 0.7:1 to 1.2:1.

Abstract: The present invention provides a thermosetting powder coating composition comprising:

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.