WATER-BASED COATING COMPOSITION, METHOD FOR FORMING MULTI-LAYER COATING FILM, AND ARTICLE HAVING MULTI-LAYER COATING FILM

The purpose of the present invention is to provide a water-based coating composition and method for forming a multi-layer coating film by which it is possible to form a coating film having excellent smoothness, image clarity, and chipping resistance in a 3C1B format. This water-based coating composi...

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Bibliographische Detailangaben
Hauptverfasser:	AZUMA, Tatsuya, NAKANO, Narihito
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADHESIVES APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON CORRECTING FLUIDS DYES FILLING PASTES INKS MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS POLISHES PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL SPRAYING OR ATOMISING IN GENERAL THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	The purpose of the present invention is to provide a water-based coating composition and method for forming a multi-layer coating film by which it is possible to form a coating film having excellent smoothness, image clarity, and chipping resistance in a 3C1B format. This water-based coating composition includes the following configuration. A water-based coating composition for 3C1B, wherein the water-based coating composition is characterized by containing 7 to 60 mass% of an acrylic resin emulsion (a), 10 to 60 mass% of a film-forming resin (b), and 10 to 50 mass% of a curing agent (c), on the basis of the total mass of the solid resin content in the water-based coating composition; the acrylic resin emulsion (a) having a core/shell structure where the core section contains, as a copolymer component, 0.1 to 10 mass% of a polymerizable unsaturated monomer having two or more polymerizable unsaturated groups in one molecule, on the basis of the total mass of monomer of the core section, and the hydroxyl value of the core section is 50 to 200 mgKOH/g, and the hydroxyl value of the shell section is 50 to 200 mgKOH/g.