Sulfur Containing Patents (Class 423/467)
  • Patent number: 11973185
    Abstract: Provided is a method for producing a sulfide solid electrolyte having a high purity as side reaction hardly occurs, and having a high ionic conductivity, in a simplified manner. The method is for producing a sulfide solid electrolyte containing a lithium atom, a sulfur atom, a phosphorus atom and a halogen atom, comprising separately preparing a complex (1) containing a sulfide that contains a lithium atom, a sulfur atom and a phosphorus atom, as a constituent element, and a complex (2) containing a halide that contains a lithium atom and a halogen atom, as a constituent element, and mixing the complex (1) and the complex (2).
    Type: Grant
    Filed: May 6, 2021
    Date of Patent: April 30, 2024
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Naoya Masuda, Atsushi Yao, Akito Takashima, Takehiro Fujita, Yusuke Iseki
  • Patent number: 8986572
    Abstract: The invention is directed to calcium fluoride crystal optics with improved laser durability that can be used for the transmission of below 250 nanometer (nm) electromagnetic radiation. The optics consists of CaF2 as the major component and Mg in an amount in the range of 13 ppm to 20 ppm while Ce and Mn are <0.5 ppm. The doped crystal and optics made therefrom have a ratio of 515/380 nm transmission loss of less than 0.3 after exposure to greater than 2.8 MRads of ?-radiation. Further, the doped crystal and optics made therefrom exhibit a greatly improved lifetime as shown by ALDT testing to at least 1 billion pulses.
    Type: Grant
    Filed: July 18, 2012
    Date of Patent: March 24, 2015
    Assignee: Corning Incorporated
    Inventors: James R Cole, Keith J Donohue, Michael Lucien Genier, Robert Stephen Pavlik, Jr., Michael William Price, William Rogers Rosch, Jeffrey L Sunderland
  • Patent number: 8828346
    Abstract: The present invention is directed to methods comprising adding NH3 to a SO2F2 solution to directly form a FSO2NH2 and/or a salt of [FSO2NH]?, optionally quenching any unreacted NH3 present in the resulting mixture, and isolating the product from the resulting mixture.
    Type: Grant
    Filed: March 8, 2012
    Date of Patent: September 9, 2014
    Assignee: Trinapco, Inc.
    Inventor: Martin R. Johnson
  • Publication number: 20140038062
    Abstract: The present invention relates to a method for producing lithium fluorosulfonate which comprises reacting a lithium salt and fluorosulfonic acid in a nonaqueous solvent, wherein the lithium salt is a lithium salt not generating water through the reaction step.
    Type: Application
    Filed: October 11, 2013
    Publication date: February 6, 2014
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Daisuke KAWAKAMI, Ryo YAMAGUCHI, Hiroyuki TOKUDA, Masahiro TAKEHARA
  • Patent number: 8580220
    Abstract: According to the method for producing bis(fluorosulfonyl)imide salt of the present invention, the method for producing fluorosulfate, and the method for producing bis(fluorosulfonyl)imide onium salt, first, an aqueous solution is prepared by dissolving a mixed liquid containing bis(fluorosulfonyl)imide and fluorosulfonic acid in water. Then, the aqueous solution is neutralized with an alkaline compound, producing bis(fluorosulfonyl)imide salt and fluorosulfate. In the methods, bis(fluorosulfonyl)imide salt, fluorosulfate, and bis(fluorosulfonyl)imide onium salt can be obtained safely and easily.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: November 12, 2013
    Assignees: Mitsubishi Materials Corporation, Mitsubishi Materials Electronic Chemicals Co., Ltd.
    Inventors: Tsunetoshi Honda, Takeshi Kamiya
  • Patent number: 8367026
    Abstract: A method for converting depleted uranium tetrafluoride (UF4) to triuranium octaoxide (U3O8), and producing sulfur tetrafluoride, using a two step process. The first step uses heat and a mixture of the uranium tetrafluoride and an alkaline compound, either an alkaline oxide or an alkaline hydroxide, to produce U3O8 and a water-soluble metal halide. The second step uses heat, sulfur and a halogen to produce sulfur tetrafluoride and triuranium octaoxide.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: February 5, 2013
    Inventor: Bamidele A. Omotowa
  • Patent number: 8367036
    Abstract: The invention provides a novel polyanion-based electrode active material for use in a secondary or rechargeable electrochemical cell, wherein the electrode active material is represented by the general formula AaMb(SO4)2Zd.
    Type: Grant
    Filed: July 13, 2010
    Date of Patent: February 5, 2013
    Assignee: Valence Technology, Inc.
    Inventors: Jeremy Barker, M. Yazid Saidi
  • Publication number: 20120244690
    Abstract: According to certain embodiments, a resist is placed over the surface of a semiconductor structure, wherein the resist covers a portion of the semiconductor structure. Dopants are implanted into the semiconductor structure using an ion implantation beam in regions of the semiconductor structure not covered by the resist. Due to exposure to the ion implantation beam, at least a portion of the resist is converted by exposure to the ion beam to contain an inorganic carbonized material. The semiconductor structure with resist is contacted with a superacid composition containing a superacid species to remove the resist containing inorganic carbonized materials from the semiconductor structure.
    Type: Application
    Filed: March 23, 2011
    Publication date: September 27, 2012
    Applicant: TOSHIBA AMERICA ELECTRONIC COMPONENTS, INC.
    Inventor: Yoshihiro Uozumi
  • Patent number: 8268269
    Abstract: As population density increases, the transportation of hazardous chemicals, including acids and disinfectants, lead to an increased incidence of spills while the consequences of spills become more serious. While solutions of halide acids, hypohalites and halites are safer disinfectants for transportation, handling, storage and use than traditional gaseous chlorine, the manufacturing cost of these disinfectants has here-to-fore limited their use. Economical processes are presented for the manufacture of O2, halogen oxides, halide acids, hypohalites, and halates; as well as polynucleate metal compounds, metal hydroxides and calcium sulfate hydrate (gypsum). The instant invention presents methods and processes that incorporate the use of sulfur. This is while environmental regulators, such as the US EPA, require an increased removal of sulfur from hydrocarbon fuels, thereby creating an abundance of sulfur, such that the refining industry is in need of a way to dispose of said abundance of sulfur.
    Type: Grant
    Filed: July 23, 2007
    Date of Patent: September 18, 2012
    Inventors: Richard Alan Haase, John Smaardyk
  • Patent number: 8252208
    Abstract: The invention is directed to calcium fluoride crystal optics with improved laser durability that can be used for the transmission of below 250 nanometer (nm) electromagnetic radiation. The optics consist of CaF2 as the major component and, in one embodiment, at least one dopant/amount selected >0.3-1200 ppm Mg, >0.3-200 ppm Sr, >0.3-200 ppm Ba, while Ce and Mn are <0.5 ppm. The doped crystal and optics made therefrom have a ratio of 515/380 nm transmission loss of less than 0.3 after exposure to greater than 2.8 MRads of ?-radiation.
    Type: Grant
    Filed: October 21, 2009
    Date of Patent: August 28, 2012
    Assignee: Corning Incorporated
    Inventors: James R Cole, Keith J Donohue, Michael Lucien Genier, Robert Stephen Pavlik, Jr., Michael William Price, William Rogers Rosch, Jeffrey L Sunderland
  • Patent number: 8231855
    Abstract: Disclosed is a method for an energy-efficient improvement in the production of sulfur hexafluoride, and eliminates the generation of other byproducts. The process is an oxidative fluorination of sulfur tetrafluoride by CoF3/F2, where CoF3 is solid stationary phase that can be regenerated.
    Type: Grant
    Filed: December 28, 2010
    Date of Patent: July 31, 2012
    Inventor: Bamidele A. Omotowa
  • Patent number: 8202353
    Abstract: A separation, purification and recovery method of SF6, HFCs or PFCs is disclosed, which comprises a step for forming a gas hydrate including components in addition to SF6, HFCs or PFCs. It is possible to separate and recover fluoro-gas at a much lower cost as compared to a conventional method for thereby obtaining an economical effect and preventing an emission of SF6, HFCs or PFCs which corresponds to Non-CO2 having a higher earth warming index, which leads to preventing an earth warming phenomenon. So, the present invention might be widely applied.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: June 19, 2012
    Assignee: Yoosung Co., Ltd.
    Inventors: Gang Woo Lee, Jae Jeong Lee, Dong Hyun Moon, Min Choul Kim, Min Gwang Seok, Ju Hyun Ko, Hyung Joon Shin, Young Seog Kim, Ju Dong Lee, Man Sig Lee
  • Publication number: 20120014859
    Abstract: According to the method for producing bis(fluorosulfonyl)imide salt of the present invention, the method for producing fluorosulfate, and the method for producing bis(fluorosulfonyl)imide onium salt, first, an aqueous solution is prepared by dissolving a mixed liquid containing bis(fluorosulfonyl)imide and fluorosulfonic acid in water. Then, the aqueous solution is neutralized with an alkaline compound, producing bis(fluorosulfonyl)imide salt and fluorosulfate. In the methods, bis(fluorosulfonyl)imide salt, fluorosulfate, and bis(fluorosulfonyl)imide onium salt can be obtained safely and easily.
    Type: Application
    Filed: March 30, 2010
    Publication date: January 19, 2012
    Applicant: MITSUBISHI MATERIALS CORPORATION
    Inventors: Tsunetoshi Honda, Takeshi Kamiya
  • Patent number: 7927391
    Abstract: The invention is directed to a process for the manufacture of a ceria based polishing composition, comprising (a) suspending an inorganic cerium salt or cerium hydroxide with a cerium content calculated as cerium oxide in the range of 50%-100% based on Total rare earth oxide (TREO) in an aqueous medium thereby obtaining an aqueous suspension, (b) treating said aqueous suspension with an acid or a salt of an acid selected from the group of HF, H3PO4 and H2SO4, thereby obtaining a solid suspended in said aqueous medium, (c) separating said solid from said aqueous medium, and (d) calcining the separated solid at a temperature between 750° C. and 1,200° C. and grinding the calcined solid to grain sizes in the range of 0.5 ?m to 5.0 ?m.
    Type: Grant
    Filed: July 19, 2006
    Date of Patent: April 19, 2011
    Assignee: Treibacher Industrie AG
    Inventors: Karl Schermanz, Johann Schönfelder
  • Patent number: 7883800
    Abstract: The disclosure herein relates to a lithium ion conducting electrolyte. This electrolytic material has improved ionic conductivity. The material disclosed herein is an amorphous compound of the formula LixSMwOyNz wherein x is between approximately 0.5 and 3, y is between 1 and 6, z is between 0.1 and 1, w is less than 0.3 and M is an element selected from B, Ge, Si, P, As, Cl, Br, I, and combinations thereof. The material can be prepared in the form of a thin film. The electrolyte material can be used in microbatteries and electronic systems.
    Type: Grant
    Filed: January 26, 2006
    Date of Patent: February 8, 2011
    Assignee: Centre National de la Recherche Scientifique
    Inventors: Philippe Vinatier, Alain Levasseur, Brigitte Pecquenard, Kyong-Hee Joo
  • Patent number: 7846318
    Abstract: The invention relates generally to processes for the production of high-basicity and ultra-high basicity polyaluminum chlorides including aluminum chlorohydrate. The processes can produce products of a wide range of basicities and are particularly useful in producing high basicity products. The process can produce a wide range of solution concentrations and are particularly useful in producing high solution concentrations. The processes described generate high purity products, which are free of by-product salt(s). The processes described herein can also be utilized to produce enhanced efficacy polyaluminum chlorides including aluminum chlorohydrate. When compared to conventional processes for manufacturing these compounds the processes disclosed herein are unique in so far as the disclosed processes do not require aluminum metal as a starting material. The products of the processes are suitable in applications including water purification, catalysts, and antiperspirants.
    Type: Grant
    Filed: January 3, 2007
    Date of Patent: December 7, 2010
    Assignee: Nextchem, LLC
    Inventors: William E. Pratt, Joseph J. Stevens, Peter G. Symons
  • Publication number: 20100260659
    Abstract: Described herein are methods for the bromine-facilitated synthesis of fluoro-sulfur compounds, that include SF4, SF5Cl, SF5Br and SF6. The methods described herein generally require lower temperature and pressure, produce higher yields, require less time, do not use corrosive or costly reactants and solvents that are commonly used in the synthesis of the fluoro-sulfur compounds, and do not produce deleterious waste products when compared to previously-used methods.
    Type: Application
    Filed: June 11, 2009
    Publication date: October 14, 2010
    Applicant: AVANTBIO CORPORATION
    Inventor: Rolf Winter
  • Patent number: 7771611
    Abstract: Novel compositions are provided containing a compound represented by the formula YOSF5 or ZOSF5, where: (a) Y is: (i) an organic cation other than (Me2N)3S+ or (ii) an inorganic cation, provided that when Y is the inorganic cation, the composition further includes a complexing agent; and (b) Z is C1-20 alkyl, aryl, cycloalkyl, combinations thereof, or analogues thereof containing at least one heteroatom, provided that the compound represented by the formula ZOSF5 is a molecular compound. Processes of making the cationic compounds are disclosed as are processes for using the compositions containing cationic compounds in nucleophilic replacement reactions to prepare the compositions containing molecular compounds including the OSF5 group.
    Type: Grant
    Filed: July 10, 2006
    Date of Patent: August 10, 2010
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Robert George Syvret, Gauri Sankar Lal, Kristen Elaine Minnich
  • Publication number: 20100136436
    Abstract: The disclosure herein relates to a lithium ion conducting electrolyte. This electrolytic material has improved ionic conductivity. The material disclosed herein is an amorphous compound of the formula LixSMwOyNz wherein x is between approximately 0.5 and 3, y is between 1 and 6, z is between 0.1 and 1, w is less than 0.3 and M is an element selected from B, Ge, Si, P, As, Cl, Br, I, and combinations thereof. The material can be prepared in the form of a thin film. The electrolyte material can be used in microbatteries and elctronic systems.
    Type: Application
    Filed: January 26, 2006
    Publication date: June 3, 2010
    Applicant: Centre National de la Recherche Scientifique
    Inventors: Philippe Vinatier, Alain Levasseur, Brigitte Pecquenard, Kyong-Hee Joo
  • Publication number: 20100061919
    Abstract: A method is provided for the production of a stable mid- and high-basicity polyaluminum chloride and polyaluminum chlorosulfate, respectively from sodium aluminate and aluminum chloride or low- or mid-basicity polyaluminum chloride by ultrasonic processing of the reactants. The method overcomes the formation of gels and insoluble precipitates that typically form when mixing sodium aluminate and aluminum chloride and the formation of sodium chloride, which is insoluble in high concentration polyaluminum chloride solutions. The invention eliminates the cumbersome extended heating periods previously required to deal with the formation of insoluble aluminum oxide precipitates in batches of polyaluminum chloride produced from sodium aluminate and aluminum chloride using high-shear mixing.
    Type: Application
    Filed: September 10, 2008
    Publication date: March 11, 2010
    Inventors: LEVI JAMES GROVE, Kevin Edward Janak
  • Patent number: 7491377
    Abstract: Methods of making basic aluminum halides, such as basic aluminum chlorides, are described, which includes the use of catalysts, such as nickel cations or cobalt cations.
    Type: Grant
    Filed: January 25, 2007
    Date of Patent: February 17, 2009
    Assignee: Southern Ionics Incorporated
    Inventors: Joe C. Steelhammer, Hollie Copeland
  • Patent number: 7476376
    Abstract: Disclosed is metal composite oxides having the new crystal structure. Also disclosed are ionic conductors including the metal composite oxides and electrochemical devices comprising the ionic conductors. The metal composite oxides have an ion channel formed for easy movement of ions due to crystallographic specificity resulting from the ordering of metal ion sites and metal ion defects within the unit cell. Therefore, the metal composite oxides according to the present invention are useful in an electrochemical device requiring an ionic conductor or ionic conductivity.
    Type: Grant
    Filed: April 21, 2005
    Date of Patent: January 13, 2009
    Assignee: LG Chem, Ltd.
    Inventors: Seung Tae Hong, Yun Ho Roh, Eung Je Lee, Mi Hyae Park
  • Publication number: 20070172738
    Abstract: The disclosure herein relates to a lithium ion conducting electrolyte. This electrolytic material has improved ionic conductivity. The material disclosed herein is an amorphous compound of the formula LixSMwOyNz wherein x is between approximately 0.5 and 3, y is between 1 and 6, z is between 0.1 and 1, w is less than 0.3 and M is an element selected from B, Ge, Si, P, As, Cl, Br, I, and combinations thereof. The material can be prepared in the form of a thin film. The electrolyte material can be used in microbatteries and elctronic systems.
    Type: Application
    Filed: January 26, 2006
    Publication date: July 26, 2007
    Applicant: Centre National de la Recherche Scientifique
    Inventors: Philippe Vinatier, Alain Levasseur, Brigitte Pecquenard, Kyong-Hee Joo
  • Patent number: 6869582
    Abstract: A process for producing BrSF5 includes providing a first reactant including a metal fluoride of fluorine and a metal M selected from the group consisting of alkali metals, alkaline earth metals, and Ag, providing a second reactant including BrF3, combining the first reactant and the second reactant to form a mixture, wherein the first reactant and the second reactant are allowed to contact for a period of time sufficient to produce MBrF4 in an amount stoichiometrically equivalent to a quantity of BrF3, and providing a third reactant including SF4, wherein the third reactant reacts with MBrF4. The process for producing BrSF5 can further include providing a fourth reactant including Br2, wherein the fourth reactant is provided before, during and/or after providing the first reactant, the second reactant and/or the third reactant. BrSF5 is produced in a yield of from about 50% to about 99.99% based on the amount of SF4.
    Type: Grant
    Filed: January 24, 2003
    Date of Patent: March 22, 2005
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Wade H. Bailey, III, William Jack Casteel, Jr.
  • Patent number: 6764670
    Abstract: A process for removing thiothionylfluoride from a composition containing sulfur tetrafluoride and thiothionylfluoride includes contacting the composition with a high surface area material, such as activated carbon. The process can provide purified sulfur tetrafluoride free of thiothionylfluoride. The high surface area material can be replaced for further processing. Alternatively, the material can be regenerated by contacting it with a gas mixture of oxygen and nitrogen at 150-450° C. and converting the adsorbed elemental sulfur to sulfur dioxide without oxidation of the material.
    Type: Grant
    Filed: November 1, 2001
    Date of Patent: July 20, 2004
    Assignee: Air Products and Chemicals, Inc.
    Inventor: Philip Bruce Henderson
  • Patent number: 6673329
    Abstract: The invention relates to a novel process for preparing fluorosulfonic acid having low contents of low-boiling compounds in which hydrogen fluoride and sulfur trioxide are combined in stoichiometric amounts in a reaction vessel or by means of a reaction nozzle, the hot, gaseous fluorosulfonic acid that is formed is fed directly into a distillation column, and the fluorosulfonic acid is taken off at the bottom of the column or in the stripping section of the distillation column.
    Type: Grant
    Filed: June 20, 2001
    Date of Patent: January 6, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Andreas Bulan, Michael Batz, Dieter Heinz, Kasper Hallenberger
  • Patent number: 6471934
    Abstract: A method of preparing sulfuryl fluoride by disproportionation of sulfuryl chloride fluoride in the gas phase on activated carbon.
    Type: Grant
    Filed: February 12, 2001
    Date of Patent: October 29, 2002
    Assignee: Solvay Fluor und Derivate GmbH
    Inventors: Alf Schulz, Matthias Rieland, Eckhard Hausmann
  • Publication number: 20020031466
    Abstract: The invention features the use of fluorosulphonates to release the organic bases from their fluorohydrate. This use is characterized in that a hydrogenofluorosulphonate of an organic base is formed and in that the hydrofluoric acid which is associated with the said base or with one of its precursors is separated therefrom. The invention is useful in organic synthesis applications.
    Type: Application
    Filed: January 25, 2001
    Publication date: March 14, 2002
    Inventors: Laurent Saint-Jalmes, Marcel Morel
  • Publication number: 20020001562
    Abstract: The invention relates to a novel process for preparing fluorosulfonic acid having low contents of low-boiling compounds in which hydrogen fluoride and sulfur trioxide are combined in stoichiometric amounts in a reaction vessel or by means of a reaction nozzle, the hot, gaseous fluorosulfonic acid that is formed is fed directly into a distillation column, and the fluorosulfonic acid is taken off at the bottom of the column or in the stripping section of the distillation column.
    Type: Application
    Filed: June 20, 2001
    Publication date: January 3, 2002
    Inventors: Andreas Bulan, Michael Batz, Dieter Heinz, Kaspar Hallenberger
  • Publication number: 20010008540
    Abstract: It is an object of the present invention to provide a calcium fluoride crystal in which the light transparency does not deteriorate with consecutive irradiation by high output short wavelength light over long time periods. A calcium fluoride crystal in accordance with the present invention has an internal transmittance of 70% or more for light of 135-nm wavelength or over. A calcium fluoride crystal contains any one of strontium, aluminum, silicon and magnesium, with the strontium content ranging from 1 ppm to 600 ppm, the aluminum content ranging from 1 ppm to 50 ppm, the silicon content ranging from 1 ppm to 50 ppm, or the magnesium content ranging from 1 ppm to 10 ppm. A calcium fluoride crystal has an internal transmittance of 70% or more for light of 135-nm wavelength or over and contains 1 ppm or less of La and 10 ppm or less of Y. An optical system for an excimer laser in accordance with the present invention comprises a lens comprising any calcium fluoride crystal set forth above.
    Type: Application
    Filed: March 21, 1997
    Publication date: July 19, 2001
    Inventors: TOMORU OBA, TOSHIO ICHIZAKI
  • Patent number: 6241958
    Abstract: The process of preparing a solution of basic sulfate-containing polyaluminum chloride includes digesting an aluminum-containing substance with hydrochloric acid to form a resulting solution and an insoluble residue; filtering the resulting solution to separate the insoluble residue therefrom and to form a solids-free solution; concentrating the solids-free solution by evaporation to form a concentrated solution having an AlCl3 content of about 30 percent by weight; recovering AlCl3·6 H2O from the concentrated solution by crystallization; thermally decomposing the recovered AlCl3·6 H2O by heating at 150 to 200° C. so as to form a solid basic aluminum chloride containing Al and OH in a molar ratio of OH/Al of 1.35:1 to 2.25:1; dissolving the solid basic aluminum chloride in an aqueous sulfuric acid solution and heat-treating at 40 ° C. to 70 ° C.
    Type: Grant
    Filed: August 12, 1993
    Date of Patent: June 5, 2001
    Assignee: Metallgesellschaft Aktiengesellschaft
    Inventors: Gerhard Haake, Gunter Geiler, Frank Haupt
  • Patent number: 6143269
    Abstract: 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: Grant
    Filed: July 29, 1999
    Date of Patent: November 7, 2000
    Assignee: Solvay Fluor und Derivate GmbH
    Inventors: Alf Schulz, Matthias Rieland, Lothar Zipfel, Thomas Born, Eckhard Hausmann
  • Patent number: 6036935
    Abstract: The present invention is directed to a process for the production of polyaluminum chlorides and polyaluminum chlorosulfates useful as coagulants in water treatment. In addition, the invention is directed to the products made by the disclosed processes.
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: March 14, 2000
    Assignee: Delta Chemical Corporation
    Inventor: James M. Dulko
  • Patent number: 6019955
    Abstract: An nickel hydroxide positive electrode active material which can be made by an ultrasonic precipitation method. The nickel hydroxide active material is characterized by the composition: ##EQU1## where x, the number of water ligands surrounding each Ni cation, is between 0.05 and 0.4 and y is the charge on the anions.
    Type: Grant
    Filed: March 8, 1996
    Date of Patent: February 1, 2000
    Assignee: Energy Conversion Devices, Inc.
    Inventors: Stanford R. Ovshinsky, Rosa T. Young, Liwei Xu, Suresh Kumar
  • Patent number: 5997838
    Abstract: The present invention is directed to a process for the production of polyaluminum chlorides and polyaluminum chlorosulfates useful as coagulants in water treatment. In addition, the invention is directed to the products made by the disclosed processes.
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: December 7, 1999
    Assignee: Delta Chemical Corporation
    Inventor: James M. Dulko
  • Patent number: 5985234
    Abstract: The present invention is directed to a process for the production of polyaluminum chlorides and polyaluminum chlorosulfates useful as coagulants in water treatment. In addition, the invention is directed to the products made by the disclosed processes.
    Type: Grant
    Filed: August 25, 1997
    Date of Patent: November 16, 1999
    Assignee: Delta Chemical Corporation
    Inventor: James M. Dulko
  • Patent number: 5879651
    Abstract: The present invention relates to a process for the preparation of basic polyaluminium chlorosulphates. This process consists, after basification, in carrying out cooking at a temperature between 60.degree. C. and 95.degree. C. such that the cooking time is proportionately shorter than the higher cooking temperature. The polychlorosulphates obtained according to the process of the invention can be used for the treatment of drinking water, effluents and in the paper industry.
    Type: Grant
    Filed: March 10, 1997
    Date of Patent: March 9, 1999
    Assignee: Elf Atochem S.A.
    Inventor: Pascal Dufour
  • Patent number: 5879652
    Abstract: A process for producing sulfuryl chloride and/or thionyl chloride is disclosed which involves contacting a mixture comprising SO.sub.2 and Cl.sub.2 (e.g., at about 300.degree. C. or less) with carbon having an active metal content of less than 1000 ppm by weight and a high degree of oxidative stability (i.e., a weight loss of about 12%, or less, in the WVC Temperature Test as defined herein).
    Type: Grant
    Filed: June 24, 1997
    Date of Patent: March 9, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Walter Vladimir Cicha, Leo Ernest Manzer
  • Patent number: 5759508
    Abstract: A process for producing sulfuryl chloride and/or thionyl chloride is disclosed which involves contacting a mixture comprising SO.sub.2 and Cl.sub.2 (e.g., at about 300.degree. C. or less) with a silicon carbide catalyst having a surface area of at least 10 m.sup.2 .multidot.g.sup.-1.
    Type: Grant
    Filed: June 24, 1997
    Date of Patent: June 2, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Walter Vladimir Cicha, Leo Ernest Manzer
  • Patent number: 5603912
    Abstract: An improved method for preparing a basic aluminum hyrdoxy-chlorosulfate is disclosed comprising reacting a basic aluminum chloride with a sulfate source, i.e. H.sub.2 SO.sub.4 or aluminum sulfate, and modifying the reaction product by the addition of minor amounts of calcium containing compound and a water soluble iron salt. The product is useful in water treatment, is effective in cold water as well as low alkalinity water. A magnesium compound can be added to the composition where the calcium source contains no magnesium.
    Type: Grant
    Filed: March 17, 1995
    Date of Patent: February 18, 1997
    Assignee: Westwood Chemical Corporation
    Inventors: Rocco Giovanniello, Anton Treuting
  • Patent number: 5518706
    Abstract: A novel basic aluminum chlorosulfate, well adopted for the improved purification of aqueous media, has the formula:Al.sub.n (OH).sub.m (SO.sub.4).sub.k Cl.sub.3n-m-2kand characteristic basicity, Al/Cl ratio, molecular weight and hydrodynamic diameters.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: May 21, 1996
    Assignee: Rhone-Poulenc Chimie De Base
    Inventors: Jean Boutin, Andre Combet, Jean-Pierre Communal
  • Patent number: 5441720
    Abstract: A pentafluorosulfanylnitramide salt that is ammonium pentafluorosulfanylnamide, sodium pentafluorosulfanylnitramide, potassium pentafluorosulfanylnitramide, lithium pentafluorosulfanylnitramide, or cesium pentafluorosulfanylnitramide. These salts are useful as energetic oxidizers in explosives and propellants.
    Type: Grant
    Filed: July 13, 1993
    Date of Patent: August 15, 1995
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: William M. Koppes, Michael E. Sitzmann
  • Patent number: 5348721
    Abstract: The invention relates to high basicity polyaluminumchlorosulfates and their preparation process, said polyaluminumchlorosulfates being useful in the treatment of drinking water, aqueous effluents, and in the papermaking industry and having the formula:Al(OH).sub.a Cl.sub.b (SO.sub.4).sub.c M.sub.d N.sub.ein which:M is an alkaline-earth metal;N is an alkaline metal;a, b, c, d and e are numbers such that:1.95<a<2.4; 0<c<0.15; 0<d<0.16;0<e<1.7; a+b+2c=3+2d+e.
    Type: Grant
    Filed: February 18, 1993
    Date of Patent: September 20, 1994
    Assignee: Elf Atochem S.A.
    Inventors: J. D. Murphy, R. Schuffenecker, H. Suty
  • Patent number: 5246686
    Abstract: Novel basic aluminum chlorosulfate solutions, having a basicity ranging from 45% to 70% and wherein more than 80% of the SO.sub.4.sup.2- values are complexed, prepared, e.g., by reacting calcium carbonate with a chlorosulfuric solution of aluminum, are useful coagulating and flocculating agents for the removal of impurities from aqueous media, notably to prepare potable water therefrom; the water thus treated contains but trace amounts of residual aluminum values.
    Type: Grant
    Filed: January 8, 1992
    Date of Patent: September 21, 1993
    Assignee: Atochem
    Inventors: Jean-Pierre Cuer, Claude Aubineau, Claudine Bonnel
  • Patent number: 5124139
    Abstract: A process for preparing basic aluminum chlorosulfate comprising:1) forming a reaction mixture in an aqueous medium of aluminum chloride and aluminum sulfate in a molar ratio of aluminum chloride: aluminum sulfate ranging from about 0.75:1 to about 1:3 to 1 followed by2) basifying the product by reacting the product of step 1) with a source of calcium sufficient and under conditions sufficient to form a polymer.
    Type: Grant
    Filed: August 31, 1990
    Date of Patent: June 23, 1992
    Assignee: Rhone-Poulenc Inc.
    Inventors: William H. Colvin, Michael P. White
  • Patent number: 5008095
    Abstract: Clear and colorless solutions of basic aluminum chlorosulfates are prepared by reacting a slurry of calcium chloride and calcium carbonate with aluminum sulfate, separating calcium sulfate solids and a solution of basic aluminum chlorosulfate from the medium of reaction, and flocculating said solution of basic aluminum chlorosulfate with at least one nonionic or cationic polyelectrolyte flocculant.
    Type: Grant
    Filed: November 16, 1988
    Date of Patent: April 16, 1991
    Assignee: Rhone-Poulenc Chimie
    Inventor: Jean Boutin
  • Patent number: 4981673
    Abstract: A novel basic aluminum chlorosulfate, well adopted for the improved purification of aqueous media, has the formula:Al.sub.n OH.sub.m (SO.sub.4).sub.k Cl.sub.3n-m-2kand characteristic basicity, Al/Cl ratio, molecular weight and hydrodynamic diameters.
    Type: Grant
    Filed: September 8, 1988
    Date of Patent: January 1, 1991
    Assignee: Rhone-Poulenc Chimie de Base
    Inventors: Jean Boutin, Andre Combet, Jean-Pierre Communal
  • Patent number: 4929381
    Abstract: A novel anion exchange material comprising substantially crystalline inorganic mixed metal hydroxides and mixed metal hydrated oxides exhibiting anion exchange properties at temperatures up to about 150.degree. C. and a method of preparing the same is disclosed. The anion exchanger composition is prepared by coprecipitating hydroxides or hydrated oxides of metal elements such as aluminum and titanium and then drying the mixed metal hydroxides or hydrated oxides.
    Type: Grant
    Filed: March 1, 1988
    Date of Patent: May 29, 1990
    Assignee: The Dow Chemical Company
    Inventor: Howard W. Clark
  • Patent number: 4891196
    Abstract: The present invention relates to an improved chlorosulfonic acid (CSA) composition useful in making a high clarity sulfated salt of a C.sub.8-22 natural or synthetic predominantly straight chain aliphatic primary alcohol to a process for making the improved CSA composition and to improved CSA composition by the process.The CSA contains less than 1 weight percent sulfuric acid, less than 0.47 weight percent sulfur trioxide, less than 5 parts per million iron and less than 0.5 relative percent pyrosulfuryl chloride.The CSA process involves contacting the hydrogen chloride and sulfur trioxide at the point of reaction with from 0.75 to 1.5 weight percent sulfuric acid based on the stoichiometric rate of CSA produced from the sulfur trioxide with an excess of hydrogen chloride.
    Type: Grant
    Filed: December 16, 1986
    Date of Patent: January 2, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Norman A. Carlson, Glenn R. Evers
  • Patent number: 4882140
    Abstract: Solid aluminum hydroxide compositions having improved solubility, stability and filterability are formed by adding at least a stoichiometric amount of a solid base to a concentrated solution of an aluminum salt (about 8.3% Al.sub.2 O.sub.3 or higher) and stirring vigorously. The base used has an alkali metal, alkali earth metal, or other metallic cation, and does not contribute an anion other than hydroxide to the solution. Particularly suitable bases are carbonate and bicarbonate.
    Type: Grant
    Filed: May 6, 1987
    Date of Patent: November 21, 1989
    Assignee: General Chemical Corporation
    Inventor: Larry W. Becker