Process for the preparation of colloidal dispersions of ceric dioxide in an alcoholic medium

A process is provided for preparing colloidal dispersions of alcohol-dispersible association complexes of ceric dioxide and a hydroxyphenyl carboxylic acid having from about seven to about twenty carbon atoms in a molar ratio CeO2/acid of at least about 6:1 which comprises: (1) mixing (a) ceric diox...

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Bibliographische Detailangaben
Hauptverfasser:	RAMIREZ, CARLOS, GRADEFF, PETER S
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS CORRECTING FLUIDS DYES FILLING PASTES INKS INORGANIC CHEMISTRY METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC CHEMISTRY PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING POLISHES USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	A process is provided for preparing colloidal dispersions of alcohol-dispersible association complexes of ceric dioxide and a hydroxyphenyl carboxylic acid having from about seven to about twenty carbon atoms in a molar ratio CeO2/acid of at least about 6:1 which comprises: (1) mixing (a) ceric dioxide comprising ammonium nitrate or ammonium and nitrate ions in an amount within the range from about 3 to about 14% by weight of the ceric dioxide and a member selected from the group consisting of water, methanol, acetic acid and mixtures thereof in an amount usually from about 10 to about 60 g per mole of CeO2, sufficient to effect reaction with (b) a hydroxyphenyl carboxylic acid having from about seven to about twenty carbon atoms (c) an aliphatic alcohol, such as methanol, isopropanol, 2-ethoxy ethanol, etc. at a temperature within the range from room temperature to about 100 DEG C., thereby effecting dispersion of the ceric dioxide in the aliphatic alcohol.