Composite membrane with support structure made of microporous material

US6277483A · kind A · utility

Assignee

• GKSS-Forschungszentrum Geesthacht GmbH · DE

Inventors

• Klaus-Viktor Peinemann · Geesthacht, DE
• Detlev Iritsch · Hamburg, DE
• Ernst-Moritz Bellingen · Hamburg, DE
• Michael Deppe · Munich, DE
• Michael Schossig-Tiedemann · Schwarzenbek, DE

Key dates

• Filing date: Jul 30, 1998
• Grant date: Aug 21, 2001
• Expiry date: Jul 30, 2018

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/249991
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

In a composite membrane for the separation of water vapors from gases, the membrane comprising a microporous support membrane, a non-porous separation layer based on an originally water soluble cellulose derivative which was made water insoluble is disposed on the support membrane by immersing the support membrane in a water containing bath including a cellulose derivative and the separation layer is then cross-linked with a dialdehyde to render it water insoluble.