Method for producing polyetherpolyols in the presence of a multi-metal cyanide complex catalyst

Polyetherpolyols are prepared by reacting diols or polyols with ethylene oxide, propylene oxide, butylene oxide or a mixture thereof in the presence of a multimetal cyanide complex catalyst by a process which is carried out in a vertical upright cylindrical reactor comprising a jet nozzle which is a...

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Bibliographic Details
Main Authors Harre, Kathrin, Ostrowski, Thomas, Zehner, Peter, Muller, Jorn, Stutzer, Dieter, Grosch, Georg, Winkler, Jurgen, Bauer, Stephan
Format Patent
LanguageEnglish
Published 02.01.2003
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Summary:Polyetherpolyols are prepared by reacting diols or polyols with ethylene oxide, propylene oxide, butylene oxide or a mixture thereof in the presence of a multimetal cyanide complex catalyst by a process which is carried out in a vertical upright cylindrical reactor comprising a jet nozzle which is arranged in the upper reactor region and is directed downward and via which the starting materials and the reaction mixture are fed in, and comprising a take-off, preferably in the lower reactor region, via which the reaction mixture is fed back to the jet nozzle in an external circulation by means of a pump via an equilibration container, comprising a concentric guide tube which extends over the total length of the reactor, except for the reactor ends, and comprising a heat exchanger integrated in the annular space.