Cytec Technology Corporation

Kemira Oyj

Cytec Industries Inc.

Raymond S Farinato

Louis Rosati

John J Freeman, Jr

Joseph J Mallon

Sun-Yi Huang

Henry M Masias

Haunn-Lin Tony Chen

Naijie Zhang

Krzysztof Andruszkiewicz

Marie E Anderson

Jorge Adams

Scott Griffin

David Alexander Mortimer

Jorge Eduardo Adams Pena

Peter Hawkins

Disclosed herein is a method of producing alumina trihydrate crystals from an alumina trihydrate recovery process stream wherein an aqueous emulsion comprising an alkyl or alkenyl succinic anhydride is added to the alumina trihydrate recovery process stream, wherein the aqueous emulsion is substantially free of mineral oils. The method provides a decrease in percentage of alumina trihydrate crystals having a volume average diameter of less than about 45 micrometers compared to the percentage of alumina trihydrate crystals produced in the absence of the aqueous emulsion of an alkyl or alkenyl succinic anhydride.

Oil-free crystal growth modifiers for alumina recovery

This invention relates to a method of achieving a solid-liquid separation of an oil-based mud comprising the step of contacting said oil-based mud with a water-in-oil emulsion comprising a polymer derived from at least one water-soluble monomer, where the polymer is not dissolved prior to contact with the oil-based mud, mixing the water-in-oil emulsion and the oil-based mud and separating the solid phase from the liquid phase in the oil-based mud. In addition, this invention also relates to a composition comprising an oil-based mud with a water-in-oil emulsion comprising a polymer derived from at least one water-soluble monomer, wherein the polymer is not dissolved prior to contact with the oil-based mud.

Solid-liquid separation of oil-based muds

The invention provides blends of high molecular weight, water-soluble cationic structured polymers with high molecular weight, water-soluble, cationic polymers which either are linear or which have a lower degree of structure. The blends are useful for dewatering dispersions of suspended solids, achieving good dewatering rates at relatively low dosage levels.

Polymer blends for dewatering

Compositions of precipitated anionic polymers containing mixtures of certain salts as well as processes for making and using the same are disclosed.

Anionic water-soluble polymer precipitation in salt solution

Compositions of precipitated cationic polymers containing mixtures of certain salts as well as processes for making and using the same are disclosed.

Cationic water-soluble polymer precipitation in salt solutions

Water-soluble, branched, high molecular weight, cationic polymer flocculants are disclosed, as well as methods of making the same and methods of dewatering suspended solids using the same.

High performance polymer flocculating agents

Compositions of precipitated anionic polymers containing mixtures of cationic organic salts and kosmotropic salts as well as processes for making and using the same to condition soil are disclosed.

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Norwalk, CT, United States of America

Raymond S Farinato