METHOD OF COATING METALLIC MATERIAL

PROBLEM TO BE SOLVED: To provide a coating method which is capable of eliminating environmental problems, such as waste liquid treatment, and is capable of improving the corrosion resistance of a metallic material coated with an aqueous coating. SOLUTION: The metallic material is subjected to ordina...

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Bibliographische Detailangaben
Hauptverfasser:	YAMANE TASUKU, MASADA KEIJI, OTSU TAKAHITO
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL CHEMICAL PAINT OR INK REMOVERS CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL CORRECTING FLUIDS DIFFUSION TREATMENT OF METALLIC MATERIAL DYES FILLING PASTES INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL 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 SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a coating method which is capable of eliminating environmental problems, such as waste liquid treatment, and is capable of improving the corrosion resistance of a metallic material coated with an aqueous coating. SOLUTION: The metallic material is subjected to ordinary pretreatment, such as degreasing, then to chemical conversion treatment by a phosphate chemical conversion treatment liquid of a pH 2.5 to 3.5 containing phosphate ions, chlorate ions, sulfate ions and bromate ions and zirconium hexafluoride ions of 200 to 800 ppm in content (chemical conversion treatment process step). The metallic material is then subjected to film forming treatment, etc., prior to coating and is manufactured from raw materials containing 10 to 70 mass% monofunctional monomer having 6 to 18C alkyl chains without undergoing the film forming treatment, etc. In addition, the thermosetting type aqueous coating composition containing a water-soluble polyester resin of 1,000 to 10,000 in number average molecular weight, 20 to 80 in acid value and 50 to 200 in hydroxy value and a hardener is applied on the film formed by the chemical conversion treatment (coating process step).