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公开(公告)号：CA1197264A
公开(公告)日：1985-11-26
申请号：CA433423
申请日：1983-07-28
Applicant: BASF AG
Inventor： STRAEHLE WOLFGANG , DENNI RAYMOND , MARX MATTHIAS
Abstract: PROCESS FOR PURIFICATION OF CRUDE POLYETHER POLYOLS A process for purifying crude polyether polyols which are prepared by anionic polymerization of alkylene oxides in the presence of basic catalysts. The polyols are mixed with water and ortho-phosphoric acid in certain quantity ratios, an adsorption agent is incorporated in the reaction mixture, the mixture is filtered and the water is removed from the polyether polyol by distillation.
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