Process for installing synthetic fiber diaphragms in chlor-alkali cell
US4193861A · kind A · utility
3Cited by
3References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 8, 1979 |
| Grant date | Mar 18, 1980 |
| Priority date | — |
| Expiry date | Jan 8, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25B13/08
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Initial cell voltages are reduced by decreasing the resistance of the diaphragm through a degassing procedure prior to or at installation thereof. This degassing procedure involves subjecting the diaphragm to subatmospheric pressure while contacting the diaphragm with electrolyte, said electrolyte being an aqueous saline solution having a surface active agent therein in an amount sufficient to reduce the surface tension below the critical surface tension for wetting the fibers, and increasing the pressure to atmospheric or cell working pressure to force electrolyte solution into the interstices of the diaphragm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.