Potassium monopersulfate triple salt with increased active oxygen content and substantially no K2S2O8
June 28, 2024. 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 2802722 2926998 3036885 Apparatus for generating an oxidizing reagent for the treatment of polluted water Potassium monopersulfate compositions and process for preparing them Process for the production of potassium peroxymonosulphate triple salt Class of stable potassium monopersulfate compositions Process for the generation of peroxyacids Method of preparing storage-stable aqueous sodium peroxymonsulfate solutions Manufacture of peroxidic compositions InventorAssigneeApplicationNo. 10878169 filed on 06/28/2004US Classes:423/513, Persulfate252/186.27, Inorganic peroxide252/186.43, Contains inorganic peroxide423/521, Ternary compound containing hydrogen510/349Coated, encapsulated, or impregnated particle component in a physically heterogeneous composition (e.g., coated or encapsulated particles mixed with powder, granules, etc.)ExaminersPrimary: Anthony, Joseph D.Attorney, Agent or FirmInternational ClassesC01B 15/08C01B 15/06 AbstractA method of preparing a potassium monopersulfate composition is presented, wherein the potassium monopersulfate composition has the formula (KHSO5)x(KHSO4)y(K2SO4)z, where x+y+z=1 and x=0.46–0.64, y=0.15–0.37, and z=0.15–0.37, said potassium monopersulfate composition having an active oxygen content greater than or equal to 4.9 wt. % and K2S2O8 at a concentration of <0.5 wt. % of the potassium monopersulfate composition. The method includes reacting an H2O2 solution containing at least 70 wt. % H2O2 with a H2SO4 solution at a substoichiometric ratio of the H2SO4 to H2O2 to generate a weak Caro's acid solution, then combining the weak Caro's acid solution with oleum to produce a rich Caro's acid solution. The rich Caro's acid solution may be combined with an alkali potassium compound to produce the potassium monopersulfate composition. During the process, the temperature is maintained at below 30 ° C.Other References
Field of SearchPersulfate |
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