Multi-layered diaphragm for electrolysis
US4604170A · kind A · utility
30Cited by
10References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 25, 1985 |
| Grant date | Aug 5, 1986 |
| Priority date | — |
| Expiry date | Nov 25, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2327/18
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A multi-layered diaphragm for electrolysis, which comprises a porous layer of a fluorine-containing polymer having a pore diameter of from 0.05 to 10 .mu.m, a porosity of from 30 to 95% and a thickness of from 30 to 450 .mu.m and with its interior and anode-side surface being hydrophilic, and an ion exchange resin layer supported on the cathode side thereof and having a thickness thinner than the porous layer but of at least 5 .mu.m and an ion exchange capacity of from 0.5 to 2.0 meq/g dry resin, the total thickness being from 35 to 500 .mu.m.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.