METHOD FOR FORMING COATING FILM, MATERIAL TO BE COATED AND INTERMEDIATE COATING COMPOSITION

PROBLEM TO BE SOLVED: To provide a method for forming a coating film by which a coating film excellent in finished appearance and chipping resistance is obtained at the time of coating an automotive body, etc., in a three coat-one bake method for applying an intermediate coating, applying a base coa...

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Bibliographische Detailangaben
Hauptverfasser:	FUSHIMI SATORU, YAMAMOTO TAKESHI
Format:	Patent
Sprache:	eng
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 CORRECTING FLUIDS DYES FILLING PASTES INKS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS 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 TRANSPORTING USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method for forming a coating film by which a coating film excellent in finished appearance and chipping resistance is obtained at the time of coating an automotive body, etc., in a three coat-one bake method for applying an intermediate coating, applying a base coating and a clear coating by a wet-on-wet system and baking and curing the three layers at the same time. SOLUTION: The intermediate coating, base coating and clear coating are successively applied on a base material coated by electrodeposition, and the applied three layers are simultaneously baked and cured to form the coating film. The intermediate coating consists of, by weight, 40-80% hydroxy-containing resin and 20-60% curing agent capable of reacting with the hydroxy, based on the total amount of solid resin component, and further contains 0.05-3% sulfonic-acid catalyst, based on the solid resin component.