Potassium monopersulfate compositions and process for preparing them
Patent 4579725 Issued on April 1, 1986. Estimated Expiration Date: 
September 4, 2005. 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.
September 4, 2005. 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 2901318 2901319 3036885 3041139 InventorAssigneeApplicationNo. 06/771490 filed on 09/04/1985US Classes:423/513PersulfateExaminersPrimary: Straub, Gary P.International ClassesC01B 15/00 (20060101)C01B 15/08 (20060101) AbstractA storage stable salt melting at 80° to 150° C. having the formula (KHSO5)x (KHSO4)y (K2 SO4)z where x+y+z=1, and x=0.4-0.97, preferably 0.60-0.85; y=0.03-0.60, preferably 0.15-0.40; z=0-0.10, preferably 0-0.3; and y is ࣙz, which is treated with 1.0-9.0% of a basic magnesium compound which is MgCO3, Mg(OH)2, MgO or mixtures thereof is disclosed. The salt is prepared by neutralizing Caro's acid with a basic potassium compound to form a reaction mixture. Water is evaporated from the reaction mixture at 15° to 35° C. using a vacuum of 2-15 mm Hg absolute pressure to form up to 40 wt. % crystals. The crystals are separated, treated with a basic magnesium compound, dried, and further treated with a basic magnesium compound.Field of SearchPersulfate |
| ||||||||||||||
