Farbreine Eisenoxid-Direktrotpigmente, Verfahren zu ihrer Herstellung sowie deren Verwendung

Iron oxide direct red pigments, having a colour saturation in the building materials test of more than 45 CIELAB units are prepared by adding either (a) an iron (II) salt solution and metallic iron or (b) an iron (II) salt solution and an alkali solution to a seed suspension and oxidizing with an O2...

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Bibliographische Detailangaben
Hauptverfasser:	LERCH, KLAUS. DR., 4150 KREFELD, DE, BUXBAUM, GUNTER. DR., 4150 KREFELD, DE
Format:	Patent
Sprache:	ger
Schlagworte:	ADHESIVES ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F CONCRETE DYES INORGANIC CHEMISTRY LIME, MAGNESIA METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS POLISHES PREPARATION OF CARBON BLACK REFRACTORIES SLAG TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	Iron oxide direct red pigments, having a colour saturation in the building materials test of more than 45 CIELAB units are prepared by adding either (a) an iron (II) salt solution and metallic iron or (b) an iron (II) salt solution and an alkali solution to a seed suspension and oxidizing with an O2-containing gas, wherein the seed suspension is a suspension of yellow FeOOH star-shaped particles having a specific surface of >100 m g and an average particle size