LAYERED MIXED METAL HYDROXIDES MADE IN NON-AQUEOUS MEDIA

• Main Authors: KNOBEL, THOMAS M, SIMS, STEVE A, BURBA, JOHN L., III
• Format: Patent
• Language: English; French
• Published: 07.05.1992
• Edition: 5
• Subjects: ADHESIVES; CHEMISTRY; COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM; COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS; COMPOUNDS THEREOF; DYES; FUELS; INORGANIC CHEMISTRY; LUBRICANTS; LUBRICATING COMPOSITIONS; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-METALLIC ELEMENTS; PAINTS; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; POLISHES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION

Crystalline layered mixed metal hydroxides (LMMHs) which are substantially free of unbound water and which conform esentially to the generic formula LimDdT(OH)(3+m+d), where m represents an amount of Li of from 0 to 3, D represents a divalent metal cation, and d represents an amount of D of from 0 to 8.0, T represents a trivalent metal cation, and (3+m+d) represents an amount which essentially satifies the valence requirements of Li, D and T, and where m+d does not equal zero, are prepared, in an organic reaction medium which is essentially free of unbound water, by mixing predetermined metal organo compounds in predetermined ratios and reacting the metal organo compounds with at least one reagent which supplies OH- ions to replace the beginning anions in the mixture of metal compounds. A preferred LMMH is one which conforms essentially to the generic formula MgdAl(OH)(3+d), where d represents the amount of Mg per each unit of Al. Useful anhydrous gels are among the useful products.