Preparation of amphoteric acrylic acid copolymers suitable as oil-in-water emulsion breakers
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United States of America Patent
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Sep 3, 1996
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app pub date -
Dec 5, 1995
filing date -
Sep 23, 1994
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Abstract
The invention comprise a composition for breaking oil-in-water emulsions comprising adding from about 1 part per million to about 500 parts per million of an amphoteric acrylic acid copolymer to the emulsion. Once the copolymer is added, the emulsion is subjected to agitation until the oil-in-water emulsion is resolved and the oil and water separates into two phases. The oil and water phases are then subjected to a separation technique to separate the phases. The invention further comprises a method of synthesizing the amphoteric polymers used in the emulsion breaking application.
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