Catalytic hydrolysis of alkylene oxides

Details Catalytic hydrolysis of alkylene oxides Catalytic hydrolysis of alkylene oxides

C - Chemistry, Metallurgy

07

C

C07C 29/10 (2006.01) C07C 31/20 (2006.01)

Patent

CA 2308336

A process for the preparation of alkylene glycols by reacting an alkylene oxide with water in the presence of a catalytic composition comprising a marcocyclic chelating compound complexed with an ionic compound the anion of which is catalytically effective under the reaction conditions. Preferably, the macrocycle is a crown ether or a cryptate and the anion is selected from the group of halogenides, carboxylates having from 1-20 carbon atoms, hydrogen carbonate, hydrogen sulphite, hydrogen phosphate and metalates.

La présente invention concerne un procédé permettant de préparer des alkylène-glycols en mettant à réagir un oxyde d'alkylène avec de l'eau en présence d'une composition catalytique renfermant un composé chélateur macrocyclique complexé avec un composé ionique dont l'anion possède une efficacité catalytique dans les conditions de la réaction. De préférence, le macrocycle est un éther couronne ou un cryptate et l'anion est choisi dans le groupe comprenant les halogénures, les carboxylates de 1 à 20 atomes de carbone, le carbonate d'hydrogène, le sulfite d'hydrogène, le phosphate d'hydrogène et les métalates.

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