Method for producing an acid and/or alkali metal hydroxide
US5397445A · kind A · utility
23Cited by
4References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 19, 1994 |
| Grant date | Mar 14, 1995 |
| Priority date | — |
| Expiry date | Jan 19, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D61/445
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for producing an acid and/or an alkali metal hydroxide, from a neutral salt by electrodialysis employing a bipolar membrane and an anion exchange membrane and/or a cation exchange membrane, wherein as the anion exchange membrane, an anion exchange membrane made of a polymer having repeating units of the formula: ##STR1## wherein each of R.sub.1, R.sub.2 and R.sub.3 is a hydrogen atom or an alkyl group having up to two carbon atoms, and having an ion-exchange capacity of from 1 to 5 meq/g dry resin, is used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.