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

The process comprises calcining of a homogenised mixture of minimum 99% purity CrO3=H3BO3=S (1:4=0.25) at 900-1050 deg.C over 30-60 minutes. The product is heated at 80-100 deg.C in magnesium or zinc stearate suspension. Washing with successive settling, in water at 50-60 deg.C, filtration, and dryi...

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Bibliographische Detailangaben
Hauptverfasser:	VLAD CONSTANTIN, RO, ANGER ILDIKO ELISABETA, SEICARU OVIDIU LAURENTIU, DUMITRU ILEANA, 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 calcining of a homogenised mixture of minimum 99% purity CrO3=H3BO3=S (1:4=0.25) at 900-1050 deg.C over 30-60 minutes. The product is heated at 80-100 deg.C in magnesium or zinc stearate suspension. Washing with successive settling, in water at 50-60 deg.C, filtration, and drying at 120 deg.C, is followed by grinding.