Patent ID: 9567283
Date: 2017-02-14
CPC Classifications: B01D,C07C

Claim:
1. A process for separating at least one mandelic compound in salified form from an aqueous reaction mixture resulting from condensation, in a basic aqueous medium, of at least one aromatic compound bearing at least one hydroxyl group and in which the para position is free with glyoxylic acid, said process comprising: a) decanting said reaction medium to recover an organic phase comprising aromatic compound in non-salified form and an aqueous phase comprising the at least one mandelic compound and an amount of the aromatic compound, each in salified form, b) contacting said aqueous phase with an adsorbent support to selectively adsorb aromatic compound from the aqueous phase on said support and recover an aqueous mixture comprising the at least one mandelic compound in salified form.