Cationic polyelectrolyte demulsifier and coagulator

B - Operations – Transporting – 01 – D

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B01D 17/05 (2006.01) C02F 1/56 (2006.01) C08K 3/00 (2006.01) C08K 3/22 (2006.01) C08K 3/30 (2006.01) C08L 3/04 (2006.01) C08L 3/08 (2006.01) C08L 71/03 (2006.01) C08L 101/00 (2006.01)

Patent

CA 2068013

ABSTRACT OF THE INVENTION A cationic polyelectrolyte demulsifier and coagulator for use in demulsifying and coagulating oil in water emulsions comprising a mixture of three cationic polyelectrolytes wherein the polyelectrolytes comprise (a) an inorganic polyelectrolyte, (b) a cationically modified starch and (c) an epihalohydrin. The inorganic polyelectrolyte component (a) is selected from the group consisting of polyaluminum chloride, alum, calcium hydroxide, and mixtures thereof.

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