Removal of acids from tertiary amide solvents

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United States of America Patent

PATENT NO 8476424
APP PUB NO 20090259034A1
SERIAL NO

12403762

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Abstract

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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.

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Patent Owner(s)

Patent OwnerAddress
TATE & LYLE TECHNOLOGY LIMITEDLONDON EC3R 6DQ

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Isaac, Christian J Fort Dodge, US 1 9
Jansen, Robert Portella LRS, PT 82 828
Kerr, John South Croyden, GB 48 386
Leinhos, Duane A Satsuma, US 6 45
Wiley,, Jr James Edwin Daphne, US 10 36

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