Working up polyether-polyol from ring-opening polymerization of epoxide on hydroxy starter in presence of heterogeneous catalyst involves removing the catalyst by a membrane separation process

A method for working up polyether-polyols (I) obtained by ring-opening polymerization of epoxides with hydroxy-functional starters in presence of heterogeneous catalysts involves separating the catalyst from the product (I) by a membrane separation process. An Independent claim is also included for...

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Bibliographische Detailangaben
Hauptverfasser:	WINKLER, JUERGEN, HEIDER, WOLFGANG, GROSCH, GEORG HEINRICH, PAREDIS, ELS, HARRE, KATHRIN, HOEPPNER, GERD, BOHRES, EDWARD, VOS, HARTWIG
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC CHEMISTRY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION THEIR PREPARATION OR CHEMICAL WORKING-UP THEIR RELEVANT APPARATUS TRANSPORTING
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Zusammenfassung:	A method for working up polyether-polyols (I) obtained by ring-opening polymerization of epoxides with hydroxy-functional starters in presence of heterogeneous catalysts involves separating the catalyst from the product (I) by a membrane separation process. An Independent claim is also included for a method for the production of (I) by ring-opening polymerization of epoxides followed by a work-up process using a separation step as above. Verfahren von Polyetherpolyolen, die durch ring-öffende Polymerisation von Epoxiden mit OH-funktionellen Startern unter Verwendung mindestens eines heterogenen Katalysators hergestellt wurden, dadurch gekennzeichnet, daß der mindestens eine heterogene Katalysator durch ein Membrantrennverfahren vom Polyetherpolyol abgetrennt wird.