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公开(公告)号：DE19836788A1
公开(公告)日：2000-02-24
申请号：DE19836788
申请日：1998-08-13
Applicant: BASF AG
Inventor： PAULUS WOLFGANG , BERNHARD LUDWIG , JOHANSSON ASTRID CARINA , HAAS GUENTER , GEISENDOERFER MATTHIAS , BECK ERICH , LEUBE HARTMANN , KUSE REINHOLD , JAEGER ULRICH
Abstract: Process for the recovery of pure, water insoluble alpha , beta -ethylenically unsaturated carboxylic acid esters is carried out in a single step by means of an aqueous base. A process for the recovery of pure, water-insoluble esters of alpha , beta -ethylenically unsaturated carboxylic acids from a mixture containing unreacted carboxylic acids and/or an acid catalyst and optionally a polymerization inhibitor is claimed. The process comprises removal of the impurities in a single extraction step using an aqueous base and separation of the aqueous base and impurities.
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