Process for the production of ion exchange membranes with coating for electrolysis
US4502931A · kind A · utility
17Cited by
5References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 7, 1983 |
| Grant date | Mar 5, 1985 |
| Priority date | — |
| Expiry date | Apr 7, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2327/18
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A process for the production of electrolytic ion exchange membranes with a coating, comprising coarsening the surface of an ion exchange membrane by an ion-etching treatment and, thereafter, coating the coarsened surface with a substance with a low electrochemical activity. The use of these ion exchange membranes greatly reduces the electrolytic voltage while maintaining a high current efficiency, and enables electrolysis to be performed in a stable manner over a long period of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.