Catalyst stabilising additive in the hydrolysis of alkylene...

C - Chemistry – Metallurgy – 07 – C

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C07C 29/10 (2006.01) B01J 31/08 (2006.01)

Patent

CA 2354776

A process for the preparation of an alkylene glycol by reacting an alkylene oxide with water in the presence of a solid catalytic composition which includes a strongly basic ion exchange resin coordinated with one or more anions, and a stabilising additive which is an acidic ion exchange resin. Preferably the acidic ion exchange resin is of the weakly acidic methacrylate type.

L'invention concerne un procédé de préparation de glycol d'alkylène consistant à faire réagir un oxyde d'alkylène avec de l'eau en présence d'une composition catalytique solide comprenant une résine échangeuse d'ions fortement basique coordonnée avec un ou plusieurs anions, et un additif de stabilisation qui est une résine échangeuse d'ions acide. La résine échangeuse d'ions acide est de préférence une résine de type méthacrylate faiblement acide.

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