Abstract: This invention provides a method for forming multilayer coating film excelling in smoothness and distinctness of image, by 3-coat-1-bake system in which a step of applying onto a coating object a water-based intermediate paint (X) to form an intermediate coating film; a step of adjusting the solid content of the intermediate coating film to 70-100 mass %; a step of applying onto the intermediate coating film a water-based base coating paint (Y) containing 30-55 mass parts of alcoholic solvent having a boiling point of 170-250° C., to form a base coating film; a step of adjusting the solid content of the base coating film to 70-100 mass %; a step of applying a clear paint (Z) comprising 40-60 mass parts of carboxyl-containing compound and 60-40 mass parts of polyepoxide onto the base coating film to form a clear coating film; and heating the intermediate coating film, base coating film and clear coating film at 100-120° C. for 3-10 minutes and thereafter further heating them at 130-160° C.

Abstract: This invention provides an effect pigment-containing, water-borne base coating composition comprising water-dispersible acrylic polymer particles (A) and effect pigment (B), the water-dispersible acrylic polymer particles (A) being obtained by emulsion polymerization of a radical-polymerizable unsaturated monomeric mixture including an amido-containing, radical-polymerizable unsaturated monomer having at least two radical-polymerizable unsaturated groups per molecule, and the effect pigment (B) being contained at a pigment weight concentration (PWC) within a range of 15-50%.

Abstract: This invention provides a method for forming brilliant multi-layered coating film excelling in brilliance, which comprises the steps of applying an effect pigment-containing water-borne base coating composition (A1) having a coating film viscosity (VA1) after 1 minute of its application of 10-500 Pa·sec onto a substrate to form a first base coating film; and applying an effect pigment-containing water-borne base coating composition (A2) having a coating film viscosity (VA2) after 1 minute of its application of 5-200 Pa·sec onto the first base coating film while the viscosity (VA3) of the first base coating film is 10-500 Pa·sec, the viscosity ratio (VA1)/(VA2) being 1.3/1-35/1.

Abstract: The present invention provides an aqueous metallic coating composition comprising: (A) an aqueous film-forming resin; (B) a curing agent; (C) a phosphoric acid group-containing resin having an acid value of 10 to 200 mg KOH/g and obtained by copolymerizing a phosphoric acid group-containing polymerizable unsaturated monomer (a) represented by formula (1) with other polymerizable unsaturated monomer(s) (b); (D) a nitrogen-containing compound represented by formula (2); and (E) a metallic pigment. The present invention further provides a method for forming a multilayer coating film using the aqueous metallic coating composition.

Abstract: This invention provides a multilayer coating film-forming method by 2-coat-1-bake coating using a clear coat paint comprising a carboxyl group- and/or cyclic acid anhydride group-containing compound and polyepoxide, in which the coating workability and electrostatic coatability are improved by blending a specific organic solvent in the clear coat paint.

Abstract: This invention provides an automobile water-based paint capable of forming coating film of little metallic mottling and excellent flip-flop property and smoothness, which comprises hydroxyl-containing resin, viscosity-regulating agent and hydrophobic solvent, the viscosity-regulating agent being a copolymer obtained by copolymerizing a monomeric mixture containing a (meth)acrylic acid (salt), monomer represented by the following formula (1) [in which R1 stands for hydrogen or methyl, R2 and R3 stand for hydrogen, methyl or ethyl, R4 stands for C8-24 hydrocarbon group, and n is an integer of 3-60], alkyl (meth)acrylate of which alkyl moiety has 1-4 carbons and a monomer having at least two polymerizable unsaturated groups per molecule, at specific ratios.

Abstract: This invention provides a water-based primer composition comprising an aqueous dispersion of modified polyolefin, aqueous urethane resin and/or aqueous acrylic resin, specific diester compound and electrically conducting pigment, the content of the diester compound being specific. The water-based primer composition excels in adhesive property to plastic substrates, and use of the water-based primer composition enables formation of multilayered coating film excelling in finished appearance and water resistance, being free of layer mixing even when the top coating of the next step is carried out after the primer's application without an intervening preheating.

Abstract: The present invention provides a thermosetting and photocurable coating composition comprising: (A) at least one compound selected from the group consisting of radical-polymerizable unsaturated monomers, resins containing radical-polymerizable unsaturated groups, and resins containing radical-polymerizable unsaturated groups and thermosetting functional groups; (B) a hydroxyl-containing polyester resin produced by esterifying a polybasic acid (a) and a polyhydric alcohol (b), wherein an alicyclic polybasic acid (a1) and/or an alicyclic polyhydric alcohol (b1) are included in a ratio of 20% or more based on the total weight of polybasic acid (a) and polyhydric alcohol (b); (C) a crosslinking agent; and (D) a photopolymerization initiator; and a method of forming a coating film using the coating composition.

Abstract: The present invention provides a thermosetting and photocurable coating composition obtained by incorporating a copolymer of a maleimide group-containing monomer with other monomer(s) or a specific maleimide compound into a composition comprising a hydroxyl-containing resin and a curing agent and optionally containing an unsaturated compound; and a method of forming a coating film using the coating composition.

Abstract: The present invention provides a thermosetting and photocurable coating composition obtained by incorporating a copolymer of a maleimide group-containing monomer with other monomer(s) or a specific maleimide compound into a composition comprising a hydroxyl-containing resin and a curing agent and optionally containing an unsaturated compound; and a method of forming a coating film using the coating composition.

Abstract: This invention provides a method for forming multilayer coating film excelling in smoothness and distinctness of image, by 3-coat-1-bake system in which a step of applying onto a coating object a water-based intermediate paint (X) to form an intermediate coating film; a step of adjusting the solid content of the intermediate coating film to 70-100 mass %; a step of applying onto the intermediate coating film a water-based base coating paint (Y) containing 30-55 mass parts of alcoholic solvent having a boiling point of 170-250° C., to form a base coating film; a step of adjusting the solid content of the base coating film to 70-100 mass %; a step of applying a clear paint (Z) comprising 40-60 mass parts of carboxyl-containing compound and 60-40 mass parts of polyepoxide onto the base coating film to form a clear coating film; and heating the intermediate coating film, base coating film and clear coating film at 100-120° C. for 3-10 minutes and thereafter further heating them at 130-160° C.

Abstract: The present invention provides an aqueous metallic coating composition comprising: (A) an aqueous film-forming resin; (B) a curing agent; (C) a phosphoric acid group-containing resin having an acid value of 10 to 200 mg KOH/g and obtained by copolymerizing a phosphoric acid group-containing polymerizable unsaturated monomer (a) represented by formula (1) with other polymerizable unsaturated monomer(s) (b); (D) a nitrogen-containing compound represented by formula (2); and (E) a metallic pigment. The present invention further provides a method for forming a multilayer coating film using the aqueous metallic coating composition.

Abstract: The present invention provides a thermosetting and photocurable coating composition obtained by incorporating a copolymer of a maleimide group-containing monomer with other monomer(s) or a specific maleimide compound into a composition comprising a hydroxyl-containing resin and a curing agent and optionally containing an unsaturated compound; and a method of forming a coating film using the coating composition.

Abstract: The present invention provides a thermosetting and photocurable coating composition obtained by incorporating a copolymer of a maleimide group-containing monomer with other monomer(s) or a specific maleimide compound into a composition comprising a hydroxyl-containing resin and a curing agent and optionally containing an unsaturated compound; and a method of forming a coating film using the coating composition.

Abstract: The present invention provides a thermosetting and photocurable coating composition obtained by incorporating a copolymer of a maleimide group-containing monomer with other monomer(s) or a specific maleimide compound into a composition comprising a hydroxyl-containing resin and a curing agent and optionally containing an unsaturated compound; and a method of forming a coating film using the coating composition.

Abstract: This invention provides a method for forming brilliant multi-layered coating film excelling in brilliance, which comprises the steps of applying an effect pigment-containing, water-borne base coating composition (A1) containing inorganic fine particles having an average primary particle diameter not more than 1 ?m and having a solid content of at least 15 mass % but less than 45 mass % onto a substrate to form a first base coating film; successively applying onto the first base coating film an effect pigment-containing, water-borne base coating composition (A2) having a solid content of at least 5 mass % but less than 15 mass %; and curing the two coating films by heating.

Abstract: A white conductive primer coating composition comprising (a) 100 parts by total weight of a chlorinated polyolefin resin with a chlorine content of 10 to 40 wt. % and at least one modifier resin selected from the group consisting of acrylic resins, polyester resins and polyurethane resins, (b) 5 to 50 parts by weight of a crosslinking agent, and (c) 10 to 200 parts by weight of a white conductive powder comprising white inorganic pigment particles having a tin dioxide covering layer containing tungsten; and a method of forming a multilayer coating film using the composition.

Abstract: The present invention provides a white conductive primer coating composition comprising (a) 100 parts by weight of a resin mixture of a chlorinated polyolefin resin with a chlorine content of 10 to 40 wt. %, and at least one modifier resin selected from the group consisting of acrylic resins, polyester resins and polyurethane resins, (b) 5 to 50 parts by weight of a crosslinking agent, and (c) 10 to 250 parts by weight of a white conductive titanium dioxide powder which comprises titanium dioxide particles having on their surfaces a conductive layer comprising tin oxide and phosphorus, and in which the content (A) of metallic elements with valencies of 4 or less contained as impurities is no more than 0.1; and a method for forming a multilayer coating film using the composition.

Abstract: This invention provides an effect pigment-containing, water-borne base coating composition comprising water-dispersible acrylic polymer particles (A) and effect pigment (B), the water-dispersible acrylic polymer particles (A) being obtained by emulsion polymerization of a radical-polymerizable unsaturated monomeric mixture including an amido-containing, radical-polymerizable unsaturated monomer having at least two radical-polymerizable unsaturated groups per molecule, and the effect pigment (B) being contained at a pigment weight concentration (PWC) within a range of 15-50%.

Abstract: This invention provides an automobile water-based paint capable of forming coating film of little metallic mottling and excellent flip-flop property and smoothness, which comprises hydroxyl-containing resin, viscosity-regulating agent and hydrophobic solvent, the viscosity-regulating agent being a copolymer obtained by copolymerizing a monomeric mixture containing a (meth)acrylic acid (salt), monomer represented by the following formula (1) [in which R1 stands for hydrogen or methyl, R2 and R3 stand for hydrogen, methyl or ethyl, R4 stands for C8-24 hydrocarbon group, and n is an integer of 3-60], alkyl (meth)acrylate of which alkyl moiety has 1-4 carbons and a monomer having at least two polymerizable unsaturated groups per molecule, at specific ratios.