Method of preparing storage-stable aqueous sodium peroxymonsulfate solutions
Patent 5250280 Issued on October 5, 1993. Estimated Expiration Date: 
June 28, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 28, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2899272 Process of preparing peroxymonosulfate Process for the production of potassium peroxymonosulphate triple salt Patent #: 4610865 InventorsAssigneeApplicationNo. 721779 filed on 06/28/1991US Classes:423/513PersulfateExaminersPrimary: Straub, Gary P.Attorney, Agent or FirmForeign Patent References
International ClassesC01B 015/06C01B 015/08 Foreign Application Priority Data1990-06-29 DEAbstractPreviously known peroxymonosulfate solutions exhibit an unsatisfactory storage stability and/or can only be used with technical limitations. According to the invention, storage-stable, aqueous sodium peroxymonosulfate solutions can be prepared with a content of 5% to 50% by weight NaHSO5 in an economic manner by means of the partial neutralization of a solution containing sulfuric acid and Caro's acid if a such a solution containing H2 SO4 and H2 SO5 is added which contains less than 3 parts by weight hydrogen peroxide per 100 parts by weight Caro's acid and the partial neutralization is carried out up to an equivalent proportion of total SO3 to sodium ions in a range of 1 to 1 up to 1 to 1.3 and if the solution is diluted or concentrated as required.Field of SearchPersulfate |
| ||||||||||||||
