PROCESS OF PREPARATION OF THE GREEN COSMETICS PIGMENT ON CHROMIC OXYHYDRATE BASIS

The process comprises homogenising of a minimum 99% purity K2Cr2O4=H3PO3 mixture (1:4) for calcining at 600-800 deg.C over 30-60 minutes. The product is heated at 80-100 deg.C with magnesium or zinc stearate suspension. Washing with successive settling, in water at 50-60 deg., filtration, and drying...

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Bibliographische Detailangaben
Hauptverfasser:	SIMION GHEORGHE, RO, ANGER ILDIKO ELISABETA, DINCA ION, SEICARU OVIDIU LAURENTIU, PAUN CAMELIA, PARVULESCU VASILE
Format:	Patent
Sprache:	eng ; rum
Schlagworte:	ADHESIVES CHEMISTRY DYES METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS POLISHES PREPARATION OF CARBON BLACK TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES
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Beschreibung
Zusammenfassung:	The process comprises homogenising of a minimum 99% purity K2Cr2O4=H3PO3 mixture (1:4) for calcining at 600-800 deg.C over 30-60 minutes. The product is heated at 80-100 deg.C with magnesium or zinc stearate suspension. Washing with successive settling, in water at 50-60 deg., filtration, and drying at 120 deg.C, is followed by grinding.