Ion exchange membranes
US5714521A · kind A · utility
77Cited by
2References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 3, 1996 |
| Grant date | Feb 3, 1998 |
| Priority date | — |
| Expiry date | Oct 3, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2425/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention concerns heterogeneous ion exchange membranes used in electrodialysis which have anti-polarization and anti-fouling properties. The heterogeneous membranes of the invention comprise, in addition to ion-exchange particles embedded in the matrix, a layer of at least one hydrophilic cross-linked polymer bearing fixed electric charges. Alternatively, the heterogeneous membranes of the invention have a matrix which is itself made of at least one hydrophilic cross-linked polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.