Petrolite Corporation

William J Cheng

David B Guthrie

Donald M Leiendecker

This invention relates to stable, fluid zinc-containing dispersions and the preparations thereof by the high temperature decomposition of zinc acetate to ZnO in a dispersant-containing fluid, said dispersant being stable at the temperature of decomposition.

Zinc oxide dispersions by decomposition of zinc acetate

This invention relates to a process of preparing stable suspensions of Mg(OH).sub.2 which comprises blending Mg(OH).sub.2 powder with acid in a surfactant-containing fluid to effect particle size reduction of the starting Mg(OH).sub.2 powder. In practice, the mole-fraction of acid employed is less than 50% of that stoichiometrically necessary for the formation of the magnesium salt.

Low temperature process of preparing Mg(OH).sub.2 suspensions

This invention relates to a stable, fluid magnesium oxide-containing dispersion prepared by the thermal treatment of MgO powder in a non-volatile fluid in the presence of a stoichiometric or lesser amount of a carboxylic acid as illustrated by acetic acid.

MgO Dispensions

This invention relates to a process of treating hydrated chromium oxides with aqueous base(s) in the presence of dispersing agent(s) to form upon dehydration a virtually sediment-free oil solution and/or dispersion of hydrated chromium oxide in amounts up to about 20% chromium content. The product formed is a stable, bright, fluid oil-soluble and/or oil-dispersible hydrated chromium oxide upon filtration or centrifugation to remove minimal sediment.

Oil solutions and/or dispersions of hydrated chromium oxides

This invention relates to stable, fluid magnesium-containing dispersions and the preparations thereof by the high temperature dehydration of Mg(OH).sub.2 to MgO in a dispersant-containing fluid.

Magnesium-containing dispersions

This invention relates to stable, fluid magnesium-containing dispersions and the preparations thereof by the high temperature decomposition of MgCO.sub.3 to MgO in a dispersant-containing fluid.

Magnesium-containing dispersions by decomposition of MgCO.sub.3

This invention relates to stable, fluid zinc-containing dispersions and the preparations thereof by the high temperature decomposition of ZnCO.sub.3 to ZnO in a dispersant-containing fluid.

ZnO dispersions by decomposition of ZnCO.sub.3

This invention relates to stable, fluid magnesium-containing dispersions and the preparations thereof by the high temperature decomposition of Magnesium salts of carboxylic acids to MgO in a dispersant-containing fluid.

Preparation of magnesium-containing dispersions from magnesium

This invention relates to stable, fluid CaCO.sub.3 -containing dispersions, and the preparations thereof by the high temperature decomposition of a Ca carboxylate such as Ca acetate, etc., in a dispersant-containing fluid.

CaCO.sub.3 -containing dispersions

This invention relates to copolymers of alpha-olefins and maleic anhydride reacted with amines in the presence of Lewis acids, preferably BF.sub.3 or a complex thereof; and to the use of these products as anti-static agents in organic liquids, preferably in hydrocarbons. The use of Lewis acid produces a unique reaction product which is superior as to fluidity and/or anti-static properties as compared to the corresponding product produced without Lewis acid. In addition, the use of Lewis acid promotes the rate of reaction thus reducing reaction time.

Organic liquids containing anti-static agents which are copolymers of

This invention relates to stable, fluid magnesium-containing dispersions and the preparations thereof by the high temperature decomposition of Magnesium salts of carboxylic acids to MgO in a dispersant-containing fluid, where less than a stoichiometric amount of carboxylic acid is employed in forming the magnesium carboxylates, based on Mg(OH).sub.2 or equivalent.

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St. Louis, MO, United States of America

William J Cheng