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filingDate 1989-08-07-04:00^^<http://www.w3.org/2001/XMLSchema#date>
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publicationDate 1991-02-13-04:00^^<http://www.w3.org/2001/XMLSchema#date>
publicationNumber EP-0412214-A1
titleOfInvention Purifying sulfolane
abstract Sulfolane, especially the discarded bottoms from a solvent recovery unit of an aromatic extraction plant, is purified or regenerated by successive contact with a cation exchange resin and an anion exchange resin, preferably in a pair of columns in series.
isCitedBy http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2015175105-A1
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