Process for the recovery of a polyol from an aqueous solution

Details Process for the recovery of a polyol from an aqueous solution Process for the recovery of a polyol from an aqueous solution

C - Chemistry, Metallurgy

07

C

C07C 29/92 (2006.01) C07C 29/09 (2006.01) C07C 29/80 (2006.01) C07C 29/88 (2006.01) C07C 31/20 (2006.01) C07D 317/12 (2006.01)

Patent

CA 2451763

A process for the separation of a polyol or multiple polyols in admixture with other organic compounds, usually those produced with the polyol, is described. THe process uses a distillation in a column (11) of a cyclic acetal from an aqueous solution which acetal is formed in a reation mixture of the polyol and an aldehyde or ketone. The polyols, such as ethylene glycol and propylene glycol, are staple articles of commerce with many uses.

L'invention concerne un procédé de séparation d'un polyol ou de plusieurs polyols mélangés à d'autres composés organiques, et notamment des composés produits avec ce polyol. Ledit procédé fait intervenir une distillation dans une colonne (11) d'un acétal cyclique issu d'une solution aqueuse, cet acétal étant formé dans un mélange réactionnel de ce polyol et d'un aldéhyde ou d'une cétone. Lesdits polyols, tels que l'éthylène glycol et le propylène glycol, constituent des produits de base présentant de nombreuses utilisations et applications commerciales.

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