Class 423/513 - Persulfate

Subclass of Class 423 - Chemistry of inorganic compounds
Definition: Products or processes wherein the product contains the peroxymonsulfate
No. of patents: 27
Last issue date: 10/28/2008

Number	Title	Issue Date
7442323	Potassium monopersulfate solutions A composition comprising a solution of potassium monopersulfate having an active oxygen content of from about 3.4% to about 6.8% and a process for its preparation including neutralization with an alkaline material is disclosed. ...	10/28/2008
7255797	Composition including potassium monopersulfate and a halogen A product including potassium monopersulfate and a halogen is presented. The product is useful for treatment of aquatic facilities such as swimming pools. While it was known that using a combination of potassium monopersulfate and halogen is effective for sanitizing...	08/14/2007
7090820	Potassium monopersulfate triple salt with increased active oxygen content and substantially no K2S2O8 A 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=0.4...	08/15/2006
6818142	Potassium hydrogen peroxymonosulfate solutions A solution comprising potassium hydrogen peroxymonosulfate containing an elevated level of KHSO5 and having a weight ratio of SO5 to SO4 of greater than 1.0:1, and its use in microetching metal substrates is disclosed. ...	11/16/2004
6511578	Bleaching and delignifying cellulosic pulp using caroate/caro's acid solution The invention relates to a method of bleaching and/or delignifying cellulose, in which (a) a sodium hydroxide solution and a peroxydisulphate solution are first of all produced by electrolysis of a sulphate, (b) the peroxydisulphate solution is converted by hy...	01/28/2003
6368570	Process for manufacturing Caro's acid A process is disclosed for producing Caro's acid by introducing hydrogen peroxide of at least 50% by weight through a first fed line into a first reactor conduit sulfuric acid having a concentration of at least 85% by weight through a second feed line int...	04/09/2002
6242373	Boron oxide-silicon dioxide mixed oxide A boron oxide-silicon dioxide mixed oxide which has a BET surface of less than 100 m2 g, and optionally containing oxides of aluminium, titanium or zirconium, is prepared pyrogenically by flame hydrolysis. The mixed oxide is used in glass makin...	06/05/2001
5879653	Method for producing caro's acid A process for reducing or eliminating Caro's acid mist, created when producing a hot mixture containing Caro's acid by reaction of sulfuric acid and hydrogen peroxide, is carried out by quenching the hot Caro's acid mixture with water to both cool and dil...	03/09/1999
5830382	Persulfate/metal mixtures for repulping and/or decolorizing paper Repulping and/or decolorizing formulations and mixtures which include a catalytic amount of a salt of a metal such as copper, iron, silver, or nickel; a persulfate; and from 0-10% saccharide. Formulations containing a carbonate, sesquicarbonate or bicarbo...	11/03/1998
5744055	Stable monopersulfate triple salt and its method of preparation Composition and method of making bicaroate and bicaroate/dipersulfate mixtures which are stabilized, in dry form, with a coherent coating of sodium borosilicate. The borosilicate is formed in situ by the reaction of a sodium silicate and a sodium metabora...	04/28/1998
5607656	Process for preparing potassium peroxomonosulfate triple salt A process for preparing the potassium peroxomonosulfate triple salt 2 KHSO5 .multidot.KHSO4 .multidot.K2 SO4 by partial neutralization of sulfuric acid-Caro's acid fed to a working solution containing KHSO5...	03/04/1997
5250280	Method of preparing storage-stable aqueous sodium peroxymonsulfate solutions Previously 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 cont...	10/05/1993
5139763	Class of stable potassium monopersulfate compositions A stable, nonhygroscopic potassium monopersulfate composition comprising KHSO5, KHSO4 and K2 SO4 having a composition represented by a point within the closed curve of FGHIF of FIG. 1. A process for preparing a stabl...	08/18/1992
5026535	Method for decoloring sulphuric acid deriving from acid production processes The present invention relates to a method for decoloring sulphuric acid produced in accordance with the contact method, comprising one or more absorption circuits. The produced sulphuric acid is decolored by adding hydrogen peroxide to the system. The met...	06/25/1991
4963342	Solutions of permonosulphuric acid Aqueous mixed permonosulphuric acid/sulphuric acid solutions, such as semiconductor surface photoresist stripping solutions may be stabilised for storage by the addition of one or more of the metals gallium, germanium, indium, tin in the 4-valent form, an...	10/16/1990
4917122	Compositions for use in the production of integrated circuits and method for its preparation and use A photoresist stripping solution is prepared by adding hydrogen peroxide to concentrated sulphuric acid under controlled temperature conditions, preferably at below 20° C. The concentration of the sulphuric acid in the solution is preferably maintained a...	04/17/1990
4756800	Method for producing salts of monoperoxysulfuric acid and simultaneously bleaching pulp A method of producing salts of monoperoxysulfuric acid comprising reacting together, in the presence of a catalyst consisting of cupric ions in a concentration of at least 0.01 part per milion, (a) a solution of aerated water having a pH of from about 8 t...	07/12/1988
4610865	Process for the production of potassium peroxymonosulphate triple salt The present invention provides a process for the production of the triple salt 2KHSO5.KHSO.sub.4.K.sub.2 SO4 from sulphuric acid, hydrogen peroxide and potassium hydroxide, wherein, for continuous production, an aqueous working solut...	09/09/1986
4594170	Method for liquifying chloride-based heavy brine well completion fluids The invention provides a method to liquify a heavy brine completion fluid containing chlorides. The combination of a persulfate and hydrogen peroxide was found to be more effective than either compound alone, or than a peroxygen plus an activator....	06/10/1986
4579725	Potassium monopersulfate compositions and process for preparing them A 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...	04/01/1986
4394357	Separation of cobalt and nickel by oxidative precipitation with peroxymonosulfuric acid The invention relates to the preferential precipitation of cobalt from aqueous acidic sulphate solutions of nickel and cobalt. The separation is carried out by introducing at least a stoichiometric amount of Caro's Acid containing no more than a small amount o...	07/19/1983
4235863	Method of and cell for generating hydrogen A method of producing hydrogen and oxygen or oxides wherein electrolysis of n aqueous system is carried out using, in the cathode compartment of the electrolysis cell, a hydride-forming liquid metal, the resulting hydride being thermally decomposed to prod...	11/25/1980
4229422	Metal extraction In a process according to the present invention uranium is extracted into solution from its ore by leaching with an aqueous solution containing peroxomonosulphuric acid, the peroxoacid oxidizing the uranium through to its hexavalent state. Preferably the ...	10/21/1980
4179394	Process for improving the storage stability of alkali persalts A process for improving the storage behavior of alkali persalts in particularly alkali percarbonates, by preparing a granulate composition therefore is disclosed. The process comprises the steps of: (a) granulating an alkali persalt, wherein the alkali cation ...	12/18/1979
4049786	Process of preparing peroxymonosulfate High strength peroxymonosulfate is prepared by adding concentrated sulfuric acid to a solution of a soluble peroxydisulfate whereby the heat of solvation of the sulfuric acid hydrolyzes the peroxydisulfate to the peroxymonosulfate; the temperature is cont...	09/20/1977
3979313	Bleaching composition A bleaching composition comprising a hydrogen peroxide adduct having the formula: and an activating agent....	09/07/1976
3954952	Continuous chemical process for the manufacture of sodium and potassium peroxydisulfate A process for the production of sodium and potassium peroxydisulfates by continuously reacting a 10 to 75 weight percent solution of the corresponding sodium or potassium hydroxide with a 20 to 70 weight percent solution or slurry of ammonium peroxydisulf...	05/04/1976

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Class 423/513 - Persulfate