METHOD FOR OBTAINING COLOURED METAL-CONTAINING POWDER, THE POWDER OBTAINED THEREOF AND ITS USE AS METALLIC PIGMENT

The present invention relates to a method for producing a coloured metal-containing powder, which can be used as a metallic pigment, said method comprising: preparing a bulk metal-containing material in the form of powder (which acts as a particle substrate), which is a ferromanganese (FeMn) powder;...

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Bibliographische Detailangaben
Hauptverfasser:	DIÉGUEZ NOVOA, Joaquín, MÍGUEZ NOVOA, José Manuel, VARELA MIRANDA, Gonzalo, ORDÁS BADÍA, Ramón
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADHESIVES ALLOYS CASTING CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON CORRECTING FLUIDS DYES FERROUS OR NON-FERROUS ALLOYS FILLING PASTES INKS MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS POLISHES POWDER METALLURGY THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS USE OF MATERIALS THEREFOR WOODSTAINS WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:	The present invention relates to a method for producing a coloured metal-containing powder, which can be used as a metallic pigment, said method comprising: preparing a bulk metal-containing material in the form of powder (which acts as a particle substrate), which is a ferromanganese (FeMn) powder; and heating said material up to a temperature ranging from 100°C to 1000°C in a container, in the presence of oxygen. Preferably, the bulk powder is a refined FeMn powder. It is also an object of the invention the coloured metal-containing powder obtainable by means of the disclosed method, in the absence of surface modifiers, wherein it can have a blue, purple/violet and gold colour, or any intermediate tonality, depending on the metal oxide content. Said oxides are present forming an outer layer on the particles of the powder. The invention also refers to the use of the powder as a metallic pigment.