Patents by Inventor Alf Schulz
Alf Schulz has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8889091Abstract: LiPO2F2, an electrolyte salt additive for batteries, is manufactured by the reaction of POF3, PF5 or mixtures thereof, with Li3PO4 forming a reaction mixture comprising LiPO2F2. When POF3 is applied, the reaction mixture which contains essentially only LiPO2F2 is preferably extracted from the reaction mixture with a solvent which also is applicable as solvent for lithium ion batteries. If PF5 is applied, then, depending on the molar ratio of PF5 and Li3PO4, the reaction mixture also contains LiF and/or LiPF6. To isolate pure LiPO2F2 from LiF, the reaction mixture containing essentially only LiPO2F2 and LiF may for example, be extracted with dimethoxyethane, acetone, dimethyl carbonate or propylene carbonate. To isolate pure LiPO2F2 from LiPF6, the reaction mixture containing essentially only these constituents is preferably extracted with a solvent which also is applicable as solvent for the LiPF6 in lithium ion batteries to dissolve and remove LiPF6.Type: GrantFiled: July 29, 2011Date of Patent: November 18, 2014Assignee: Solvay SAInventors: Alf Schulz, Placido Garcia-Juan
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Publication number: 20140205916Abstract: Mixtures comprising LiPO2F2 and LiPF6 both of which are electrolyte salts or additive for, i.a., Li ion batteries, are manufactured by the reaction of POF3 and LiF. The mixtures can be extracted with suitable solvents to provide solutions containing LiPO2F2 and LiPF6 which can be applied for the manufacture of Li ion batteries, Li-air batteries and Li-sulfur batteries. Equimolar mixtures comprising LiPO2F2 and LiPF6 are also described, as well as a method for the manufacture of electrolyte compositions obtained by the extraction of equimolar mixtures comprising LiPO2F2 and LiPF6.Type: ApplicationFiled: July 31, 2012Publication date: July 24, 2014Applicant: SOLVAY SAInventors: Placido Garcia-Juan, Alf Schulz
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Publication number: 20130129595Abstract: LiPO2F2, an electrolyte salt additive for batteries, is manufactured by the reaction of POF3, PF5 or mixtures thereof, with Li3PO4 forming a reaction mixture comprising LiPO2F2. When POF3 is applied, the reaction mixture which contains essentially only LiPO2F2 is preferably extracted from the reaction mixture with a solvent which also is applicable as solvent for lithium ion batteries. If PF5 is applied, then, depending on the molar ratio of PF5 and Li3PO4, the reaction mixture also contains LiF and/or LiPF6. To isolate pure LiPO2F2 from LiF, the reaction mixture containing essentially only LiPO2F2 and LiF may for example, be extracted with dimethoxyethane, acetone, dimethyl carbonate or propylene carbonate. To isolate pure LiPO2F2 from LiPF6, the reaction mixture containing essentially only these constituents is preferably extracted with a solvent which also is applicable as solvent for the LiPF6 in lithium ion batteries to dissolve and remove LiPF6.Type: ApplicationFiled: July 29, 2011Publication date: May 23, 2013Applicant: SOLVAY SAInventors: Alf Schulz, Placido Garcia-Juan
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Publication number: 20130115522Abstract: LiPO2F2 is manufactured by the reaction of compounds of the general formula (I), LiXYPO4, wherein X and Y are the same or different and denote H or Li, with anhydrous HF forming a reaction mixture comprising LiPO2F2. Preferably, LiH2PO4 is applied as starting material. LiPO2F2 can be isolated from the reaction mixture by extraction with dimethyl carbonate or propylene carbonate.Type: ApplicationFiled: June 30, 2011Publication date: May 9, 2013Applicant: SOLVAY SAInventors: Placido Garcia-Juan, Alf Schulz
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Publication number: 20130108933Abstract: LiPO2F2 is manufactured by the reaction of P4O10 with LiF forming a reaction mixture comprising LiPO2F2. To isolate pure LiPO2F2, the reaction mixture is extracted with water, organic solvents or mixtures thereof, and if desired, pure LiPO2F2 is isolated from the solution. The pure LiPO2F2 can be re-dissolved in suitable organic solvents, e.g. in fluorinated and/or non-fluorinated organic carbonates. Another aspect of the present invention is crystalline LiPO2F2. LiPO2F2 is suitable as electrolyte salt or as electrolyte salt additive for Li ion batteries, for lithium-sulfur batteries and for lithium-oxygen batteries.Type: ApplicationFiled: June 30, 2011Publication date: May 2, 2013Applicant: SOLVAY SAInventors: Placido Garcia-Juan, Alf Schulz
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Publication number: 20110110844Abstract: Manganese tetrafluoride is prepared by a reaction between manganese difluoride or manganese trifluoride particles and elemental fluorine. During the reaction, surfaces of the particles are rendered fresh, e.g. by mechanical impact on the particles. Thereby, also agglomeration, sintering or vitrification of the particles is prevented. The impact is not so intensive that the particles would be crushed.Type: ApplicationFiled: December 9, 2008Publication date: May 12, 2011Applicant: SOLVAY FLUOR GMBHInventors: Ulrich Seseke-Koyro, Placido Garcia-Juan, Stefan Palsherm, Alf Schulz
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Patent number: 6645451Abstract: The preparation of phosphorus pentafluoride and arsenic pentafluoride by reacting corresponding trihalides with elemental chlorine, bromine or iodine and also with hydrogen fluoride.Type: GrantFiled: June 16, 1997Date of Patent: November 11, 2003Assignee: Solvay Fluor und Derivate GmbHInventors: Alf Schulz, Dirk Seffer, Matthias Rieland, Werner Rudolph
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Patent number: 6471934Abstract: A method of preparing sulfuryl fluoride by disproportionation of sulfuryl chloride fluoride in the gas phase on activated carbon.Type: GrantFiled: February 12, 2001Date of Patent: October 29, 2002Assignee: Solvay Fluor und Derivate GmbHInventors: Alf Schulz, Matthias Rieland, Eckhard Hausmann
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Publication number: 20010014308Abstract: A method of preparing sulfuryl fluoride by disproportionation of sulfuryl chloride fluoride in the gas phase on activated carbon.Type: ApplicationFiled: February 12, 2001Publication date: August 16, 2001Inventors: Alf Schulz, Matthias Rieland, Eckhard Hausmann
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Patent number: 6238642Abstract: Sulfuryl fluoride is prepared selectively and in a high yield from sulfur dioxide and elemental fluorine in the presence of an alkali fluoride and hydrogen fluoride. The preferred alkali fluoride is potassium fluoride.Type: GrantFiled: November 10, 1999Date of Patent: May 29, 2001Assignee: Solvay Fluor und Derivate GmbHInventors: Alf Schulz, Matthias Rieland, Eckhard Hausmann
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Patent number: 6143269Abstract: Sulfuryl fluoride (SO.sub.2 F.sub.2) frequently contains chlorine, sulfur dioxide and other acidic impurities owing to its production. Effective purification is possible if the sulfuryl fluoride is contacted with hydrogen peroxide or a precursor thereof, preferably in an aqueous solution. The purified product is suitable as a pesticidal agent, for example.Type: GrantFiled: July 29, 1999Date of Patent: November 7, 2000Assignee: Solvay Fluor und Derivate GmbHInventors: Alf Schulz, Matthias Rieland, Lothar Zipfel, Thomas Born, Eckhard Hausmann
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Patent number: 5434319Abstract: A method for stabilizing and/or purifying perfluoroalkanes, particularly from perfluoroalkanes which contain polyfluoroalkane by-products from their production process, in which the perfluoroalkanes are stabilized and/or purified by reacting the polyfluoroalkane(s) with fluorine at elevated pressure and temperature, to obtain perfluoroalkanes which are substantially free of polyfluoroalkanes. The method has the advantage that the perfluorination takes place rapidly and without significant formation of by-products or decomposition products.Type: GrantFiled: March 30, 1994Date of Patent: July 18, 1995Assignee: Solvay Fluor und Derivate GmbHInventors: Ralf Herkelmann, Werner Rudolph, Ruediger Sander, Alf Schulz