Distillation: processes – separatory – Distilling to separate or remove only water – From organic compound
Patent
1997-10-07
1999-11-02
Manoharan, Virginia
Distillation: processes, separatory
Distilling to separate or remove only water
From organic compound
159DIG27, 203 15, 203 18, 203 29, 203 39, 203 86, 21050026, 21050027, 21050031, 21050032, 21050038, 21050039, 21050041, 210640, 568916, B01D 300, B01D 1500, C07C 2726, C07C 6708
Patent
active
059763248
ABSTRACT:
A process as been found for the removal of water from reaction mixtures of acids or acid anhydrides or of aqueous alkali metal hydroxide solutions with alcohols using vapor permeation/pervaporation at the boiling point of the reaction mixture, which includes initially introducing the lowest-boiling educt in less than the stoichiometric amount, based on the other particular educt, together with this other educt, heating the reaction mixture to the boiling point and freeing the vapor mixture, which is formed from the boiling reaction mixture and includes chiefly water and the lowest-boiling component, from water on a membrane, recycling the vapor mixture which has been freed from water into the reaction mixture and topping up the reaction mixture with the lowest-boiling educt in the course of the reaction.
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Bremen Josef
Groschl Andreas
Winkler Adolf
Bayer Aktiengesellschaft
Gil Joseph C.
Manoharan Virginia
Van Eyl Diderico
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