Method for preparing aqueous quaternary ammonium hydroxide solution
US5393386A · kind A · utility
5Cited by
2References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 15, 1993 |
| Grant date | Feb 28, 1995 |
| Priority date | — |
| Expiry date | Dec 15, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25B3/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention-provides a method for preparing a high-purity aqueous quaternary ammonium hydroxide solution, and there is here disclosed this method for preparing the high-purity aqueous quaternary ammonium hydroxide solution which comprises reacting a quaternary ammonium organic acid salt with hydrogen peroxide, oxygen or an oxygen-containing gas in the presence of a platinum group metal catalyst to produce a quaternary ammonium inorganic acid salt, and then electrolyzing this inorganic acid salt by the use of an electrolytic tank having a cation exchange membrane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.