Patent · US Expired

Acid-base polymer blends and their use in membrane processes

US6759441B1 · kind B1 · utility

16Cited by

1References

17Claims

0Family size

Assignee

Universitat Stuttgart Lehrstuhl und Institut fur Chemische Verfahrenstechnik · DE

Inventors

Jochen Kerres · Esslingen am Neckar, DE
Wei Cui · London, GB

Key dates

Filing date	Feb 9, 2001
Grant date	Jul 6, 2004
Priority date	—
Expiry date	Feb 9, 2021

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P70/50
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The present invention relates to polymer blends and polymer blend membranes which consist of a polymeric sulfonic acid and of a polymer which contains primary, secondary or tertiary amino groups, which are prepared via mixing of a salt of the polymeric sulfonic acid with the polymer which contains primary, secondary or tertiary amino groups. The invention further relates to the use of polymer blend membranes in membrane fuel cells, polymer electrolyte membrane fuel cells (PEM fuel cells) or direct methanol fuel cells (DMFC), in membrane electrolysis, in aqueous or non-aqueous electrodialysis, in diffusion dialysis, in the perstractive separation of alkenes from alkene/alkane mixtures (here the membranes are in the SO3Ag form, where the Ag+ forms a reversible complex with the alkene (→facilitated transport)), in pervaporative separation of water from water/organics mixtures, or in gas separation.

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