05105029 is referenced by 14 patents and cites 4 patents.

A lower alcohol, for example, ethyl alcohol, is recovered from a reaction mixture resulted from a reaction of catechol with a lower alcohol in such a manner that the reaction mixture is distilled and separated into a distilled light vapor fraction comprising non-reacted lower alcohol and water and a residual fraction comprising a reaction product and non-reacted catechol; the distilled light vapor fraction is further distilled and separated into a distilled vapor fraction comprising the lower alcohol in an increased concentration and a residual water fraction; the distilled vapor fraction is fed to a gas-separating membrane module which allows water vapor to selectively permeate therethrough, and separated into a non-permeated fraction which comprises the lower alcohol in a high concentration, which is left in the feed side of the membrane, and a permeated fraction which comprises water in a high concentration, which is returned from the delivery side of the membrane to the further distilling step, and the non-permeated fraction is cooled and recovered.

Title
Process for recovering a lower alcohol from a catechol-lower alcohol reaction product solution
Application Number
7/724934
Publication Number
5105029
Application Date
July 2, 1991
Publication Date
April 14, 1992
Inventor
Yoichi Nishida
Ube
JP
Kanji Nakagawa
Ichihara
JP
Kohei Ninomiya
Ichihara
JP
Agent
Finnegan Henderson Farabow Garrett & Dunner
Assignee
Ube
JP
IPC
C07C 37/68
C07C 29/74
C07C 27/26
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