POWDER PAINT COMPOSITION AND PROCESS FOR FORMING MULTI-LAYERCOATS CONTAINING THE COAT THEREOF

The present invention is directed to a powder paint composition that can for m a coating film having high corrosion resistance and excellent appearance even on a met al substrate surface containing non-flat portions and a process for forming multi-layer coats excellent both in corrosion resistance a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	YAMAGUCHI, MASAYUKI, SUDO, NORIHIKO, SEO, SHINJI, UEMURA, KAZUYOSHI, YAMASHITA, YUKIHIDE
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ADHESIVES APPARATUS THEREFOR 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 ELECTROFORMING ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FILLING PASTES INKS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON 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 PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS SPRAYING OR ATOMISING IN GENERAL THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	The present invention is directed to a powder paint composition that can for m a coating film having high corrosion resistance and excellent appearance even on a met al substrate surface containing non-flat portions and a process for forming multi-layer coats excellent both in corrosion resistance and top-coat adhesion using the powde r paint composition. The powder paint composition comprises a) 30-55 parts by weight of a polyester resin having a hydroxyl value of 50-150, b) 1-20 parts by weight of a hydroxyl group-containing acrylic resin having a hydroxyl value of 30-150, c) 1-15 parts by weight of an epoxy resin, and d) 10-30 parts by weight of a urethodione ring-containing compound, based on 100 parts by weight of solid contents in the powder paint composition, the powder paint composition having an average particle size of 5-40 .mu.m.