Production process for (poly)alkylene glycol monoalkyl ether

C - Chemistry – Metallurgy – 07 – C

Patent

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Details

C07C 43/13 (2006.01) C07C 41/06 (2006.01) C07C 43/11 (2006.01) C08G 65/32 (2006.01)

Patent

CA 2223554

The present invention provides a process for producing a (poly)alkylene glycol monoalkyl ether with high selectivity and high yield. In this process, the (poly)alkylene glycol monoalkyl ether is produced by reacting an olefin and a (poly)alkylene glycol in the presence of a catalyst, wherein: 1) a crystalline metallosilicate is used as the catalyst, and at least a portion of the used catalyst is regenerated, and the regenerated catalyst is recycled as the catalyst for the reaction; or 2) the reaction between the olefin and the (poly)alkylene glycol is carried out in the presence of either or both of a (poly)alkylene glycol dialkyl ether and an alcohol.

La présente invention porte sur un procédé pour produire un éther monoalkylique de (poly)alkylèneglycol de sélectivité et de rendement élevés. Dans ce procédé, l'éther monoalkylique de (poly)alkylèneglycol est produit en faisant réagir une oléfine et un (poly)alkylèneglycol en présence d'un catalyseur, où : 1) un métallosilicate cristallin est utilisé comme catalyseur, et au moins une partie du catalyseur utilisé est régénérée, et le catalyseur régénéré est recyclé comme le catalyseur de la réaction; ou 2) la réaction entre l'oléfine et le (poly)alkylène glycol est réalisée en présence d'un éther dialkylique de (poly)alkylèneglycol et d'un alcool ou des deux.

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