Membrane production method

US8216342B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Stefan Bitterlich · Dirmstein, DE
• Hartwig Voβ · Bischofswerda, DE
• Gunter Schuch · Ludwigshafen, DE
• Armin Diefenbacher · Germersheim, DE
• Manfred Noack · Berlin, DE
• Ronald Schäfer · Aalen, DE
• Ingolf Voigt · Jena, DE
• Hannes Richter · Hermsdorf, DE
• Jürgen Caro · Hannover, DE

Key dates

• Filing date: Jan 13, 2005
• Grant date: Jul 10, 2012
• Expiry date: May 12, 2026

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S55/05
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A method for producing membranes which contain at least one solid layer on one side of a porous substrate by treating the side of the support, which is to be coated, with a synthetic solution that forms the solid layer. The inventive method is characterized in that the space located behind the side of the porous support, which is not to be coated, is filled with an inert fluid during the production of the solid layer on the porous support, “behind” being from the perspective of the support. The pressure and/or the temperature of the fluid is/are selected such that the synthetic solution is essentially prevented from entering in contact with the side of the porous support, which is not to be coated.