Oxidation stable iron oxide pigments, method for their production and their use

Oxidation stable iron oxide pigment (A) with an iron(II)-content of at least 5 wt.% (as iron(II)oxide) comprises an organic coating of a compound (I), where (A) exhibits an oxidation stability of >= 10[deg]C compared to non-coated iron oxide pigments, during oxidation stability test. Oxidation st...

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Bibliographische Detailangaben
Hauptverfasser:	KUNSTMANN, HERBERT, FRIEDRICH, HOLGER
Format:	Patent
Sprache:	eng ; pol
Schlagworte:	ADHESIVES ARTIFICIAL STONE CEMENTS CERAMICS CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE CORRECTING FLUIDS DYES FILLING PASTES INKS LIME, MAGNESIA METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING POLISHES PREPARATION OF CARBON BLACK REFRACTORIES SLAG THEIR PREPARATION OR CHEMICAL WORKING-UP TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES TREATMENT OF NATURAL STONE USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	Oxidation stable iron oxide pigment (A) with an iron(II)-content of at least 5 wt.% (as iron(II)oxide) comprises an organic coating of a compound (I), where (A) exhibits an oxidation stability of >= 10[deg]C compared to non-coated iron oxide pigments, during oxidation stability test. Oxidation stable iron oxide pigments (A) with an iron(II)-content of at least 5 wt.% (as iron(II)oxide) comprises an organic coating of a compound (I) of formula R-(COOX) n, where (A) exhibits an oxidation stability of >= 10[deg]C compared to non-coated iron oxide pigments, during oxidation stability test. R : 1-15C-aliphatic remainder (optionally saturated and optionally substituted by halo, NH 2, OH, NHR 1>, NR 1> 2 or OR 1>) or 4-26C-aromatic remainder (optionally saturated and optionally substituted by halo, NH 2, OH, NHR 1>, NR 1> 2, OR 1> or R 1>); R 1>1-10C-aliphatic remainder (optionally saturated) or 6-10C-alicyclic or aromatic (both optionally substituted); X : H, alkali metal or NR 2> 4; R 2>H or aliphatic-, alicyclic- or aromatic remainder containing 1/2 alkaline earth metal, 1/3 Al or 1/3 Fe; and n : 1-10. An independent claim is included for a process to prepare the iron oxide pigment comprising mixing the iron oxide pigment with iron(II)-content (at least 5 wt.%, as iron(II)oxide) and (I) or a suspension or a paste containing (I), and then optionally drying and grounding the mixture.