Title:
ION-EXCHANGE MATERIALS
Document Type and Number:
WIPO Patent Application WO2001070857
Kind Code:
A3
Abstract:
An ion-exchange material, for example a polymer electrolyte membrane or gas diffusion electrode comprises a semi-crystalline copolymer comprising: a first unit which includes an ion-exchange site; a second crystalline unit; and a third unit which is amorphous. The third unit is used to disrupt the crystallinity of the copolymer thereby to increase its solubility in solvents. The material described may be used in fuel cells.
Inventors:
BRIDGES RICHARD FRANK (GB)
CHARNOCK PETER (GB)
KEMMISH DAVID JOHN (GB)
WILSON BRIAN (GB)
CHARNOCK PETER (GB)
KEMMISH DAVID JOHN (GB)
WILSON BRIAN (GB)
Application Number:
PCT/GB2001/001232
Publication Date:
December 20, 2001
Filing Date:
March 21, 2001
Export Citation:
Assignee:
VICTREX MFG LTD (GB)
BRIDGES RICHARD FRANK (GB)
CHARNOCK PETER (GB)
KEMMISH DAVID JOHN (GB)
WILSON BRIAN (GB)
BRIDGES RICHARD FRANK (GB)
CHARNOCK PETER (GB)
KEMMISH DAVID JOHN (GB)
WILSON BRIAN (GB)
International Classes:
B01D71/52; B01D71/68; B01D71/80; B01D71/82; C08G85/00; C08J5/22; C25B9/23; C25B13/08; H01M8/02; H01M8/10; (IPC1-7): C08J5/22; H01M8/10; H01M4/86; H01M2/16; C08G65/48; H01M10/40
Domestic Patent References:
| WO2000015691A1 | 2000-03-23 | |||
| WO2001019896A1 | 2001-03-22 | |||
| WO1995015991A1 | 1995-06-15 |
Foreign References:
| US4657990A | 1987-04-14 | |||
| EP0574791A2 | 1993-12-22 |
Download PDF:
Previous Patent: ULTRAVIOLET-SHIELDING SHEET AND BAG MADE THEREOF
Next Patent: COMPOSITE ION EXCHANGE MATERIAL
Next Patent: COMPOSITE ION EXCHANGE MATERIAL