Hydrophobically-modified demulsifiers for oil-in-water systems
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United States of America Patent
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Jun 3, 1997
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Jul 26, 1995
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Jun 9, 1993
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Abstract
A method for breaking an oil-in-water emulsion which comprises the addition of a hydrophobically-modified polyelectrolyte copolymer comprising a diallyldimethylammonium chloride and a hydrophobically-associating monomer selected from the group consisting of quaternized dialkylaminoalkylacrylates, quaternized dialkylaminoalkylmethacrylates, and alkyl esters of (meth)acrylic acids, preferably ethylhexylacrylate, to the emulsion.
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