Process for separating off enol ethers from reaction mixtures co

Details Process for separating off enol ethers from reaction mixtures co Process for separating off enol ethers from reaction mixtures co

1990-08-29

1991-05-07

Dawson, Robert A.

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

203 43, 210767, 210781, 568693, 568699, B01D 1104, C02F 126, C02F 144

Patent

active

050134442

ABSTRACT:
The invention relates to a gentle process for the separation of enol ethers from mixtures containing water-soluble alcohols by extraction, wherein an aqueous solution of a base is used as the extraction agent in a phase ratio of the amounts of the aqueous phase: enol ether/alcohol mixture of at least 0.5:1 and the extraction is carried out in several stages or continuously with a theoretical number of stages of at least two. The process is particularly suitable for separating off enol ethers which readily decompose during distillation.

REFERENCES:
patent: 493420 (1938-10-01), Aktiengesllschaft
patent: 1314124 (1973-04-01), Shionogi
patent: 2476206 (1949-07-01), McCants
patent: 4857664 (1989-08-01), Huang et al.

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