METHOD FOR MANUFACTURING POLYETHER ESTER CARBONATE POLYOLS

The invention relates to a method for producing polyether ester carbonate polyols by attaching at least one alkylene oxide, at least one cyclical anhydride, and carbon dioxide to one or more H-functional starter substances in the presence of a double metal cyanide catalyst. The method is characteriz...

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Bibliographic Details
Main Authors Dr. SUBHANI, Muhammad Afzal, Dr. MÜLLER, Thomas Ernst, Dr. GÜRTLER, Christoph, Prof. Dr. LEITNER, Walter
Format Patent
LanguageEnglish
French
German
Published 04.01.2017
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Summary:The invention relates to a method for producing polyether ester carbonate polyols by attaching at least one alkylene oxide, at least one cyclical anhydride, and carbon dioxide to one or more H-functional starter substances in the presence of a double metal cyanide catalyst. The method is characterized in that (α) a suspension agent, which does not contain H-functional groups, is provided in a reactor, and (γ) one or more H-functional starter substances are continuously metered into the reactor during the reaction process, and the one or more alkylene oxides, the cyclical anhydride, and optionally the carbon dioxide are metered simultaneously or sequentially.
Bibliography:Application Number: EP20150708138