Process for preparing thiourea dioxide
US4233238A · kind A · utility
0Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 9, 1979 |
| Grant date | Nov 11, 1980 |
| Priority date | — |
| Expiry date | Jul 9, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C381/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
According to this invention there is provided a process for preparing thiourea dioxide characterized in that in the production of thiourea dioxide by the reaction of thiourea and hydrogen peroxide in an aqueous solvent, the filtrate after separation of the crystals of thiourea dioxide after reaction is treated with an ion-exchange resin to remove side reaction products and impurities contained therein and then is used again as a reaction solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.