Method for colouring anodically oxidised aluminium surfaces

The invention relates to a process for adsorptive coloration of anodically oxidized surfaces of aluminum and/or aluminum alloys, characterized in that a) an aqueous dyebath is provided, said aqueous dyebath containing an organic dye that fluoresces on irradiation with UV light of a wavelength betwee...

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Bibliographische Detailangaben
Hauptverfasser:	WEINBENDER ELENA, OSWALD HARALD, KLEINERT MARKUS, ROCHE OLIVIER
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	APPARATUS THEREFOR CHEMISTRY ELECTROFORMING ELECTROLYTIC OR ELECTROPHORETIC PROCESSES METALLURGY PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS
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Beschreibung
Zusammenfassung:	The invention relates to a process for adsorptive coloration of anodically oxidized surfaces of aluminum and/or aluminum alloys, characterized in that a) an aqueous dyebath is provided, said aqueous dyebath containing an organic dye that fluoresces on irradiation with UV light of a wavelength between 300 and 400 nm, containing not more than 0.4 g/liter of alkaline earth metal ions and having a pH between 4.0 and 10, b) said anodically formed surface is colored by immersion in and/or spraying with said dyebath (a) at a temperature between 10 and 50° C., and c) the colored surface is sealed.