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.
Type:
Grant
Filed:
June 3, 1993
Date of Patent:
September 6, 1994
Assignees:
BP Chemicald Limited, The British Petroleum Company P.L.C.
Inventors:
Michael D. Jones, Derrick J. Watson, Bruce L. Williams