Process for purification of crude polyether polyols

Details Process for purification of crude polyether polyols Process for purification of crude polyether polyols

C - Chemistry, Metallurgy

07

C

260/641

C07C 43/13 (2006.01) C08G 65/30 (2006.01)

Patent

CA 1197264

PROCESS FOR PURIFICATION OF CRUDE POLYETHER POLYOLS Abstract of the Disclosure 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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