Yellow pigments stable at high temperatures

A yellow pigment capable of withstanding elevated temperatures such as 200 DEG C. is provided by the formation of a spinel of iron and other metal, such as Mg, Zn, and Sn. The pigment is made by a method which does not involve a step of calcining at high temperature, such as 600 DEG to 1100 DEG C.,...

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Bibliographische Detailangaben
Hauptverfasser:	NETHERTON, LOWELL E, PATIL, ARVIND S
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES CHEMISTRY COMPOSITIONS BASED THEREON COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F DYES INORGANIC CHEMISTRY METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS POLISHES PREPARATION OF CARBON BLACK THEIR PREPARATION OR CHEMICAL WORKING-UP TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Beschreibung
Zusammenfassung:	A yellow pigment capable of withstanding elevated temperatures such as 200 DEG C. is provided by the formation of a spinel of iron and other metal, such as Mg, Zn, and Sn. The pigment is made by a method which does not involve a step of calcining at high temperature, such as 600 DEG to 1100 DEG C., but rather involves precipitation from aqueous solution and subsequent exposure to elemental oxygen, as by aeration, to form submicron-sized particles of desired spinel.