Removal of water from mixtures with alcohols and/or carboxylic acids and/or carboxylic esters

US5248427A · kind A · utility

Assignee

• BASF SE

Inventors

• Luise Spiske · Seeheim-Jugenheim, DE
• Harald Meissner · Haßloch, DE
• Werner Hefner · Lampertheim, DE
• Andreas Huebner · Unna, DE
• Hermann Steinhauser · Riegelsberg, DE
• Guido Ellinghorst · Overath, DE

Key dates

• Filing date: Jun 26, 1992
• Grant date: Sep 28, 1993
• Expiry date: Jun 26, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C67/08
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

In a process for removing water by pervaporation or vapor permeation from mixtures with alcohols and/or carboxylic acids and/or carboxylic esters by bringing the mixture into contact with one side of a membrane and removing the water-containing permeate in vapor form from the other side of the membrane, the membrane used has been obtained by plasma polymerization.