Patent · US Active

Gas separation membranes

US8167983B2 · kind B2 · utility

10Cited by

8References

25Claims

0Family size

Assignee

EVONIK DEGUSSA GMBH · DE

Inventors

Matthias Seiler · Soest, DE
Stefan Bernhardt · Offenbach, DE
Rolf Schneider · Burgstetten, DE
Roland Wursche · Schneverdingen, DE
Franz-Erich Baumann · Schneverdingen, DE

Key dates

Filing date	Dec 17, 2007
Grant date	May 1, 2012
Priority date	—
Expiry date	Aug 26, 2028

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02C20/40
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The present invention relates to compositions for producing membranes, the compositions comprising at least 0.1% by weight of highly branched polymer, at least 0.5% by weight of linear polymer and at least 30% by weight of solvent. The present invention additionally describes membranes obtainable from the compositions, and methods of producing these membranes.

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