Process for removing iodide compounds from carboxylic acids and carboxylic acid anhydrides
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United States of America Patent
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Sep 6, 1994
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N/A
app pub date -
Jun 3, 1993
filing date -
Oct 18, 1991
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Abstract
In a process for removing iodide compounds from a liquid composition comprising carboxylic acids having 2 to 6 carbon atoms or anhydrides thereof, by passing the liquid composition through a silver, mercury, palladium and/or rhodium-exchanged strong acid cation exchange resin, prior to contacting with the metal-exchanged resin the composition is contacted with a cation exchanger in the acid form to remove at least a portion of the metal ion contaminants in the liquid composition which have been found to displace the silver, mercury, palladium and/or rhodium from the metal-exchanged resin.
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