Process for the preparation of alkylene glycols

Details Process for the preparation of alkylene glycols Process for the preparation of alkylene glycols

1996-11-25

1999-02-23

Shippen, Michael L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C07C 2700

Patent

active

058746536

ABSTRACT:
A process is disclosed for preparing an alkylene glycol by reacting an alkylene oxide with water in the presence of a catalyst comprising a polymeric organosiloxane ammonium salt having a silica-like skeleton and comprising units of the general formula (I) ##STR1## wherein R.sup.1 to R.sup.4, Y and x are as specified in claim 1. Preferred are the catalysts wherein the anion Y is selected from the group of carboxylates having from 1-20 carbon atoms, hydrogen carbonate, hydrogen sulphite, hydrogen phosphate and metalate. These catalysts exhibit an enhanced selectivity stability.

REFERENCES:
patent: 4410669 (1983-10-01), Panster et al.
patent: 5130369 (1992-07-01), Hughes et al.
patent: 5286885 (1994-02-01), Goetz et al.

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