Process for separating off alkanols, mixtures of alkanols and water or water itself from oxygen-containing organic compounds of higher carbon number

US5360923A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Andreas Nickel · Winsen (Aller), DE
• Wolfgang Arlt · Hohen Neuendorf, DE
• Ingo Janisch · Gützkow, DE
• Paul Wagner · Mülheim an der Ruhr, DE
• Alexander Klausener · Neunburg vorm Wald, DE

Key dates

• Filing date: Oct 6, 1993
• Grant date: Nov 1, 1994
• Expiry date: Oct 6, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C68/08
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A first alkanol having 1 to 3 C atoms or a mixture of this first alkanol with water or water itself can be separated off from oxygen-containing organic compounds having 3 to 7 C atoms from the group comprising second alkanols and dialkyl carbonates, which always have at least 2 C atoms more than the first alkanol, by permeation on membranes if a membrane obtained by plasma polymerization is employed.