Patent · US Active

Membrane for the separation of material mixtures and method for production thereof

US7410065B2 · kind B2 · utility

0Cited by

12References

21Claims

0Family size

Assignee

GKSS-Forschungszentrum Geesthacht GmbH · DE

Inventors

Katrin Ebert · Ebern, DE
Bastian Ruffmann · Geesthacht, DE
Joachim Koll · Munich, DE
Axel Wenzlaff · Escheburg, DE

Key dates

Filing date	Apr 25, 2007
Grant date	Aug 12, 2008
Priority date	—
Expiry date	Apr 25, 2027

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D71/381
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The invention relates to a membrane for the separation of material mixtures by the principle of vapor permeation or pervaporation, in particular for the dewatering of organic solvents, comprising at least one support layer and at least one material-selective separation layer located thereon, and a method for production of such a membrane. The material-selective separating layer is made from polyvinyl alcohol, containing at least one metallic element and/or a derivative thereof. The method includes the addition of polyvinyl alcohol to a solvent, adding an organometallic compound to the solvent/polyvinyl alcohol mixture, and then applying the solvent/polyvinyl alcohol/organometallic compound mixture to the support layer as the material-selective separating layer.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.