Preparation of glycols from formaldehyde

Details Preparation of glycols from formaldehyde Preparation of glycols from formaldehyde

1991-07-10

1992-06-02

Evans, J. E.

Harvesters

568864, C07C 3120, C07C 29141, C07C 29145, C07C 29132

Patent

active

051188830

ABSTRACT:
A process is described for the preparation of propylene glycol and ethylene glycol from formaldehyde, the first step involving conversion of the formaldehyde into a mixture of polyhydroxyl compounds in a conventional manner in an alkaline medium by self-condensation and the second step involving catalytic hydrogenolysis of this mixture with a hydrogen consumption of at least 0.5 mol of hydrogen per mol of formaldehyde employed for forming the polyhydroxyl compounds.

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