PROCESS FOR PREPARING POLYETHER CARBONATE POLYOLS

PROCESS FOR PREPARING POLYETHER CARBONATE POLYOLS

A process for preparing polyethercarbonate polyols by adding alkylene oxide and carbon dioxide onto an H-functional starter substance, wherein, (a) a reactor is initially charged with a portion of H-functional starter substance, optionally together with DMC catalyst and (γ) an H-functional starter s...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: BRAUN, Stefanie, HOFMANN, Jörg, TRAVING, Michael
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
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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Beschreibung
Zusammenfassung:A process for preparing polyethercarbonate polyols by adding alkylene oxide and carbon dioxide onto an H-functional starter substance, wherein, (a) a reactor is initially charged with a portion of H-functional starter substance, optionally together with DMC catalyst and (γ) an H-functional starter substance and a suspension medium having no H-functional groups are metered continuously into the reactor during the reaction.