Removal of Halide Impurities from Organic Liquids
Patentamt JEuropaischesEuropean Patent Office Office europeen des brevets © Publication number : 0 544 496 A1 @ EUROPEAN PATENT APPLICATION @ Application number: 92310729.6 @ Int. CI.5: C07C 51/47, C07C 51/573 (22) Date of filing : 24.11.92 (So) Priority: 25.11.91 US 799455 @ Inventor: Scates, Mark O. 1801 Crooked Creek Pearland, Texas 77581 (US) (43) Date of publication of application : Inventor : Warner, R. Jay 02.06.93 Bulletin 93/22 7402 Bourget Corpus Christi, Texas 78413 (US) Inventor : Torrence, G. Paull @) Designated Contracting States : 301 South Morningside AT BE CH DE DK ES FR GB GR IE IT LI LU NL Corpus Christi, Texas 78404 (US) PT SE (74) Representative : De Minvielle-Devaux, Ian © Applicant : HOECHST CELANESE Benedict Peter et al CORPORATION CARPMAELS & RANSFORD 43, Bloomsbury Route 202-206 North Square Somerville, N.J. 08876 (US) London WC1A 2RA (GB) (54) Removal of halide impurities from organic liquids. (57) A method is provided for removing iodide compounds, particularly alkyl iodide compounds, from iodine-containing liquids, particularly carboxylic acids and anhydrides manufactured by the carbony- lation of alcohols, ethers, esters, and the like in the presence of a rhodium catalyst and an alkali metal or alkaline earth metal salt, particularly a lithium salt, wherein the carboxylic acid or anhydride is contacted with a silver or mercury salt coordinated to a polymeric resin containing functional groups having the capability to quaternize with or form ionic salts with the alkyl halides. < CO o> "<t "<t 10 o Q_ LU Jouve, 18, rue Saint-Denis, 75001 PARIS EP 0 544 496 A1 The present invention relates to the removal of halide impurities from halide contaminated liquids.
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