Process for the production of a cation exchange diaphragm and the diaphragm obtained by this process
US4537668A · kind A · utility
19Cited by
5References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 10, 1981 |
| Grant date | Aug 27, 1985 |
| Priority date | — |
| Expiry date | Jun 10, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2323/06
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Cation exchanger diaphragm which can in particular be used as a solid electrolyte. This diaphragm comprises a grafted copolymer film, particularly polyethylene grafted by styrene and has an exchange capacity exceeding 0.5 meq/g, a resistivity below 100.OMEGA..cm, a swelling in water exceeding 30% compared with the dry mass and a permeability relative to oxygen and hydrogen such that in the electrolysis of water these two gases are obtained with a purity level exceeding 98%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.