Process for the manufacture of an aqueous solution of sodium hydroxide
US5395497A · kind A · utility
9Cited by
5References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 8, 1993 |
| Grant date | Mar 7, 1995 |
| Priority date | — |
| Expiry date | Jun 8, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01D1/38
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Process for the manufacture of an aqueous solution of sodium hydroxide by electrodialysis of an aqueous solution (15) of a sodium salt derived from an acid of pK lower than the pK of carbonic acid, the solution being obtained by circulating an aqueous solution of the said acid (14) and an aqueous solution of sodium carbonate (13) on either side of a cationic membrane (12).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.