Method of manufacturing electrolysis cell diaphragms
US3980613A · kind A · utility
36Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 14, 1974 |
| Grant date | Sep 14, 1976 |
| Priority date | — |
| Expiry date | May 14, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25B13/04
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A uniform, porous, homogeneous diaphragm for use in electrolysis cells is provided by bringing together a homogeneous, stable suspension of asbestos fibers in water and a fluorinated polymeric resin latex with a pore-forming agent in the presence of a sulfonated anionic surfactant, the resulting suspension being shaped to the desired form of the diaphragm by filtration, the desired shape of the diaphragm then being dried and sintered at a temperature above the crystalline melting point of the fluorinated polymeric resin, the pore-forming agent finally being removed from the resulting diaphragm by decomposition or extraction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.