POLYETHER POLYMERIZATION PROCESS

Alkylene oxides are polymerized in the presence of a catalyst system that includes a double metal cyanide catalyst. At least one additive is present. The additive is an alkali metal, ammonium or quaternary ammonium salt of a monocarboxylic acid having up to 24 carbon atoms; monobasic potassium phosp...

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Bibliographische Detailangaben
Hauptverfasser:	NIKBIN, Nima, STEELMAN, David K, RAGHURAMAN, Arjun, ZIEBARTH, Robin P, WESTON, John W
Format:	Patent
Sprache:	eng ; fre
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:	Alkylene oxides are polymerized in the presence of a catalyst system that includes a double metal cyanide catalyst. At least one additive is present. The additive is an alkali metal, ammonium or quaternary ammonium salt of a monocarboxylic acid having up to 24 carbon atoms; monobasic potassium phosphate, a monobasic ammonium or quaternary ammonium phosphate, a dibasic ammonium and quaternary ammonium phosphate or phosphoric acid. Des oxydes d'alkylène sont polymérisés en présence d'un système catalyseur qui comprend un catalyseur de cyanure métallique double. Au moins un additif est présent. L'additif est un sel de métal alcalin, d'ammonium ou d'ammonium quaternaire d'un acide monocarboxylique ayant jusqu'à 24 atomes de carbone ; un phosphate de potassium monobasique, un phosphate d'ammonium ou d'ammonium quaternaire monobasique , un ammonium dibasique et un phosphate d'ammonium quaternaire ou de l'acide phosphorique.