Zinc-ferrit pigments stable against reduction, method for making and use of said pigments

• Main Authors: Rosenhahn, Carsten, Dr, Kräuter, Udo, Dr, König, Ralf-Gerhard, Dipl.-Ing
• Format: Patent
• Language: English; French; German
• Published: 08.04.2020
• Subjects: ADHESIVES; CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; DYES; FOODS OR FOODSTUFFS; FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BYSUBCLASSES A23B - A23J; GLASS; HUMAN NECESSITIES; INORGANIC CHEMISTRY; JOINING GLASS TO GLASS OR OTHER MATERIALS; METALLURGY; MINERAL OR SLAG WOOL; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; POLISHES; PREPARATION OF CARBON BLACK; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OFNUTRITIVE QUALITIES, PHYSICAL TREATMENT; THEIR TREATMENT, NOT COVERED BY OTHER CLASSES; TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES

Zinc ferrite colored pigment (A) comprises iron (less than or equal to 66.4 wt.%) and lithium (at least 0.08 wt.%). An independent claim is also included for the preparation of (A).