Tertiary Amine-Based Switchable Cationic Surfactants and Methods and Systems of Use Thereof
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United States of America Patent
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Aug 8, 2013
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Jan 28, 2013
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Jan 27, 2012
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The present application provides switchable cationic surfactants based on tertiary amines, and methods and systems of use thereof. The tertiary amine structure allows these switchable surfactants to reversibly switch from a non-surfactant form to a surfactant form by simple introduction of an ionizing trigger gas that comprises CO2, CS2, COS, or a mixture thereof, at a pressure and an amount sufficient to convert all or a substantial portion of the amine to said salt, where the total pressure of the ionizing trigger gas is approximately ambient pressure. These tertiary amine-based switchable surfactants are further characterized by facile switching from the surfactant form to the non-surfactant form.
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