Removal of acids from tertiary amide solvents
AssigneeTate & Lyle Technology Limited
InventorsJohn Kerr, Robert Jansen, Christian J. Isaac, James Edwin Wiley, Jr., Duane A. Leinhos
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Abstract
A method of removing a carboxylic acid from a liquid that contains a tertiary amide solvent includes a step of contacting the liquid with an extraction medium comprising an amine. The amine is immiscible with both water and the tertiary amide solvent, and the contacting step forms a de-acidified phase containing the tertiary amide solvent and a phase containing the extraction medium and the carboxylic acid. Both the liquid that contains the tertiary amide solvent and the de-acidified phase may also contain a sucrose-6-acylate.
Claims22
A method of removing a carboxylic acid from a liquid comprising a tertiary amide solvent, the method comprising a step of contacting the liquid comprising the tertiary amide solvent and the carboxylic acid with an extraction medium comprising an amine that is immiscible with both water and the tertiary amide solvent, thereby forming a phase comprising de-acidified tertiary amide solvent and a phase comprising the extraction medium and the carboxylic acid.
Dependencies are inferred from the claim text.