Porous membranes made up of organopolysiloxane copolymers

US9475010B2 · kind B2 · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Manfred Hoelzl · Burghausen, DE
• Frauke Kirschbaum · Munich, DE

Key dates

• Filing date: Aug 13, 2009
• Grant date: Oct 25, 2016
• Expiry date: Feb 7, 2031

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D71/56
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The object of the invention is porous membranes (M) comprising organopolysiloxane/polyurea/polyurethane/polyamide/polyoxalyl diamine copolymers of the general formula (1), where R, X, Y, D, E, F, B, B′, m, n, a, b, c and d have the meanings indicated in claim 1, with the proviso that at least 10% of the RH groups present in structural elements E, F and bound to nitrogen indicate hydrogen, and a method for the production of the membranes (M) and use thereof for separating material mixtures.