Perhalate Or Perhalic Acid Patents (Class 423/476)
  • Patent number: 10570013
    Abstract: Embodiments of the invention relate to methods and systems for producing ammonium perchlorate.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: February 25, 2020
    Assignee: MALVI TECHNOLOGIES, LLC
    Inventor: Vinod Malhotra
  • Patent number: 9090979
    Abstract: Disclosed is a method for producing perchlorate, which comprises: an electrolytic step (S1) wherein an electrolysis vessel (2), in which a positive electrode side (4A) on which a positive electrode (4) is arranged and a negative electrode side (5A) on which a negative electrode (5) is arranged are divided by a cation-exchange membrane (6), is used and an aqueous solution of sodium chlorate is electrolytically oxidized on the positive electrode side (4A) of the electrolysis vessel (2); a neutralization reaction step (S2) wherein a substance an aqueous solution of which shows alkalinity is added to the aqueous perchloric acid solution that has been produced by the electrolytic oxidation on the positive electrode side, so that perchlorate is synthesized by a neutralization reaction; and a crystallization process wherein the perchlorate synthesized by the neutralization reaction is obtained as crystals.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: July 28, 2015
    Assignee: IHI CORPORATION
    Inventors: Junichi Okuyama, Kumiko Yoshihisa, Yasunori Hamano, Takahiro Matsuo, Nobuhiko Kubota, Kazuo Uematsu, Muneo Ayabe
  • Publication number: 20140328887
    Abstract: The present application discloses a method of making a surface antimicrobial by coating or forming a surface with a silver (I) periodate as well as articles of manufacture comprising a silver (I) periodate. The present application also discloses a method of preventing or reducing microbial contamination on a substrate by coating the substrate with at least one silver (I) periodate. The substrate can be a wound dressing, a medical instrument, a medical device, a metallic article, a plant or a seed.
    Type: Application
    Filed: August 22, 2012
    Publication date: November 6, 2014
    Applicant: Innovotech, Inc.
    Inventors: Merle E. Olson, Patricia Nadworny, Amin M. Omar, Yanira E. Cabrera
  • Publication number: 20120328713
    Abstract: The invention pertains to methods and compositions for preventing or reducing microbial contamination using a silver (III) periodate as antimicrobial active hi a preferred embodiment the silver (III) periodate is used in a coating upon a medical device or implant to confer coating uniformity and antimicrobial efficacy. Also provided is a method of synthetising a silver (III) periodate in high yield by heating a source of single valency silver ions in water and subsequently combining it with a heated solution comprising persulfate, a by droxide, and a periodate.
    Type: Application
    Filed: December 14, 2010
    Publication date: December 27, 2012
    Inventors: Merle E Olson, Nick Allan, Amin Mousa Omar, Justin J Anderson, Patricia L Nadworny, Michael W Harding
  • Publication number: 20120141745
    Abstract: A chiral liquid crystal precursor composition which comprises at least one salt that changes a position of the selective reflection band exhibited by the composition in a cured state compared to the position of a selective reflection band exhibited by a composition in the cured state that does not contain the at least one salt. This abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.
    Type: Application
    Filed: December 7, 2011
    Publication date: June 7, 2012
    Applicant: SICPA HOLDING SA
    Inventors: Andrea CALLEGARI, Tristan JAUZEIN
  • Publication number: 20120107210
    Abstract: The invention generally relates to methods of selectively removing lithium from various liquids, methods of producing high purity lithium carbonate, methods of producing high purity lithium hydroxide, and methods of regenerating resin.
    Type: Application
    Filed: November 28, 2011
    Publication date: May 3, 2012
    Applicant: Simbol Mining Corp.
    Inventors: Stephen Harrison, Robert Blanchet
  • Publication number: 20120100056
    Abstract: The invention generally relates to methods of selectively removing lithium from various liquids, methods of producing high purity lithium carbonate, methods of producing high purity lithium hydroxide, and methods of regenerating resin.
    Type: Application
    Filed: November 28, 2011
    Publication date: April 26, 2012
    Applicant: Simbol Mining Corp.
    Inventors: Stephen Harrison, Robert Blanchet
  • Publication number: 20120020871
    Abstract: The invention relates to a method of manufacturing a perchlorate including an electrolysis process (S1) in which, using an electrolysis tank (2) in which an anode section (4A) provided with an anode (4) and a cathode section (5A) provided a cathode (5) are divided by a cation exchange membrane (6), an aqueous solution of sodium chlorate is electrolytically oxidized in the anode section, a neutralization reaction process (S2) in which a substance that becomes alkaline when dissolved in water is added to the aqueous solution of perchloric acid in the anode section, which has been generated by the electrolytic oxidation, so as to synthesize a perchlorate by a neutralization reaction, and a crystallization method in which the perchlorate synthesized by the neutralization reaction process is formed into crystals, in which the crystallization method includes a crystallization method composed of three processes of an evaporation and crystallization process (S3) or an evaporation and concentration process (S21), a co
    Type: Application
    Filed: March 26, 2010
    Publication date: January 26, 2012
    Inventors: Junichi Okuyama, Kumiko Yoshihisa, Yasunori Hamano, Takahiro Matsuo, Nobuhiko Kubota, Kazuo Uematsu, Muneo Ayabe
  • Publication number: 20110275518
    Abstract: The present invention is compositions and methods for improving seed germination rates or speed using a composition comprising at least one high valency silver ion. The compositions and methods of the present invention are effective in treating biofilms.
    Type: Application
    Filed: June 9, 2008
    Publication date: November 10, 2011
    Inventors: Lyriam L. Marques, Merle E. Olson, Michael W. Harding
  • Publication number: 20110200508
    Abstract: The invention generally relates to methods of selectively removing lithium from various liquids, methods of producing high purity lithium carbonate, methods of producing high purity lithium hydroxide, and methods of regenerating resin.
    Type: Application
    Filed: February 17, 2011
    Publication date: August 18, 2011
    Applicant: Simbol Mining Corp.
    Inventors: Stephen Harrison, Robert Blanchet
  • Patent number: 7794579
    Abstract: A process for the production of chlorates and derivative chemicals from ammonium perchlorate as a starting material. Ammonia is produced in a first step wherein a metal hydroxide is reacted with ammonium perchlorate to produce ammonia and a metal perchlorate. If the metal hydroxide used is sodium hydroxide, sodium perchlorate is formed. The ammonia generated is recovered and sent to a reformer to produce hydrogen which is used to fuel a fuel cell that generates water and electrical energy to run an electrochemical reactor where the metal perchlorate is converted to a metal chlorate and derivative chemicals.
    Type: Grant
    Filed: October 12, 2007
    Date of Patent: September 14, 2010
    Assignee: G.D.O.
    Inventors: Steve J. Schmit, Duane A. Goetsch
  • Patent number: 7572389
    Abstract: The present invention is a stabiliser composition for halogen-containing polymers, comprising a salt of a halogen-containing oxy acid and an inorganic or organic acid or an inorganic base. The present invention relates also to a process for the preparation of such stabiliser compositions and to halogen-containing polymers comprising such stabiliser compositions.
    Type: Grant
    Filed: April 12, 2005
    Date of Patent: August 11, 2009
    Assignee: Baerlocher GmbH
    Inventors: Stefan Fokken, Jürgen Hauk, Manfred Weigl
  • Patent number: 7179439
    Abstract: It is provided that a method for preparing disodium paraperiodate, characterized in that a pH of a reaction mixture which is obtained by reacting sodium iodate, iodic acid or a mixture thereof with sodium hypochlorite using sodium hydroxide is adjusted to the range between 5 and 10.
    Type: Grant
    Filed: March 19, 2003
    Date of Patent: February 20, 2007
    Assignee: Sumitomo Chemical Company, Limited
    Inventor: Kouji Yoshikawa
  • Patent number: 7179400
    Abstract: The invention is a stabilizer composition for halogen-containing polymers, comprising a carrier material of the general formula CaxAl2(OH)2(x+2)HPO3.m H2O, wherein x is a number from 2 to 12 and m is a number from 0 to 12, and a salt of a halogen-containing oxy acid or a mixture of two or more such salts, at least one salt of a halogen-containing oxy acid being present in finely distributed form on the carrier material, to a process for the preparation thereof, and to the use thereof.
    Type: Grant
    Filed: May 26, 2005
    Date of Patent: February 20, 2007
    Assignee: Baerlocher GmbH
    Inventors: Bernd Frischkemuth, Christian Helbig
  • Patent number: 6890453
    Abstract: The present invention is a stabiliser composition for halogen-containing polymers, comprising a salt of a halogen-containing oxy acid and an inorganic or organic acid or an inorganic base. The present invention relates also to a process for the preparation of such stabiliser compositions and to halogen-containing polymers comprising such stabiliser compositions.
    Type: Grant
    Filed: November 21, 2003
    Date of Patent: May 10, 2005
    Assignee: Baerlocher GmbH
    Inventors: Stefan Fokken, Jürgen Hauk, Manfred Weigl
  • Patent number: 6800203
    Abstract: A method is described to decompose perchlorate in a FeCl3/HCl aqueous solution such as would be used to regenerate an anion exchange resin used to remove perchlorate. The solution is mixed with a reducing agent, preferably an organic alcohol and/or ferrous chloride, and can be heated to accelerate the decomposition of perchlorate. Lower temperatures may be employed if a catalyst is added.
    Type: Grant
    Filed: May 29, 2002
    Date of Patent: October 5, 2004
    Assignee: U.T. Battelle
    Inventors: Baohua Gu, David R. Cole, Gilbert M. Brown
  • Publication number: 20040179991
    Abstract: A method of extracting a halide and sulphate from an aqueous sulphate solution, such as a zinc sulphate solution, comprises subjecting the solution to solvent extraction to extract halide and sulphate from the solution and controlling the amount of sulphate extracted by selective adjustment of the acidity of the aqueous solution.
    Type: Application
    Filed: March 10, 2003
    Publication date: September 16, 2004
    Applicant: TECK COMINCO METALS LTD.
    Inventors: Cashman R. S. Mason, Juris R. Harlamovs, David B. Dreisinger, Baruch Grinbaum
  • Patent number: 6620928
    Abstract: The invention pertains to a process for the regeneration and recovery of periodate from a spent iodate solution, by reacting the iodate with at least an equimolar amount of peroxosulfate. The regenerated periodate is especially suitable for oxidizing carbohydrates to dialdehyde carbohydrates. The oxidation and regeneration can also be carried out in a single stage using a catalytic amount of periodate only.
    Type: Grant
    Filed: December 13, 2001
    Date of Patent: September 16, 2003
    Assignee: SCA Hygiene Products Zeist B.V.
    Inventor: Arie Besemer
  • Patent number: 6613926
    Abstract: Novel compounds are provided in the form of nucleoside pyrophosphate and triphosphate analogs. In these analogs, the pyrophosphate or triphosphate group is replaced with a moiety that is isosterically and electronically identical thereto, but is hydrolytically and enzymatically more stable. The compounds are useful as therapeutic agents, e.g., as antiviral agents, anticancer agents, metabolic moderators and the like. The invention also provides pharmaceutical compositions containing a compound of the invention as an active agent, and in addition provides methods of treating disease, including viral infections, cancer, bacterial infections, inflammatory and/or autoimmune diseases, and the like, by administering a compound of the invention to a patient in need of such treatment.
    Type: Grant
    Filed: November 1, 2000
    Date of Patent: September 2, 2003
    Assignee: SRI International
    Inventors: Jeffrey C. Bottaro, Robert J. Schmitt, Mark A. Petrie, Paul E. Penwell
  • Patent number: 6538132
    Abstract: The invention pertains to a process for the regeneration and recovery of periodate from a spent iodate solution, by reacting the iodate with at least an equimolar amount of hypohalite, and carrying out the recovery in the presence of a water-miscible organic solvent or potassium ions or divalent metal (especially calcium) ions. The regenerated periodate is especially suitable for oxidising carbohydrates to dialdehyde carbohydrates.
    Type: Grant
    Filed: December 6, 2001
    Date of Patent: March 25, 2003
    Assignee: SCA Hygiene Product Zeist B.V.
    Inventors: Arie Cornelis Besemer, Jan Matthijs Jetten
  • Publication number: 20020072599
    Abstract: The invention pertains to a process for the regeneration and recovery of periodate from a spent iodate solution, by reacting the iodate with at least an equimolar amount of peroxosulfate. The regenerated periodate is especially suitable for oxidizing carbohydrates to dialdehyde carbohydrates. The oxidation and regeneration can also be carried out in a single stage using a catalytic amount of periodate only.
    Type: Application
    Filed: December 13, 2001
    Publication date: June 13, 2002
    Inventor: Arie Besemer
  • Patent number: 6017506
    Abstract: Process for the preparation of a sodium paraperiodate wherein an iodine compound is converted into the sodium paraperiodate in the presence of Na.sup.+ ions by means of an alkali metal hydroxide and an alkali metal hypochlorite. The iodine compound is applied in the form of an iodine-containing mixture in which besides the iodine compound in the form of I.sub.2, iodide or iodate compounds, one or more compounds chosen from the group of chlorides, bromides, sulphates, sulphites, carbonates, bicarbonates, nitrates and dissolved organic components are also present. The invention also relates to the preparation of sodium metaperiodate and other alkali and alkali earth metal periodates, wherein the sodium paraperiodate obtained is converted into sodium periodate or into an alkali or alkali earth metal periodate by means of an acid or an alkali and alkali earth metal salt at an elevated temperature. The acid used preferably is HNO.sub.3.
    Type: Grant
    Filed: October 29, 1998
    Date of Patent: January 25, 2000
    Assignee: DSM N.V.
    Inventors: Antonius L. B. Dijt, Wilhelmus R. M. Martens, Johan T. Tinge, Jan C. Wisse, Rudolf M. Eder
  • Patent number: 5382265
    Abstract: A process for removing perchlorate ion from waste water using KCl is disclosed. In the process, waste perchlorate is concentrated by water evaporation in a stripping tower. Ammonia and volatile organics are removed during the concentrating step. Potassium chloride (KCl) is added to the concentrated perchlorate solution to form potassium perchlorate (KClO.sub.4), and the reaction mixture is cooled to effect crystallization of the potassium perchlorate. The crystallization liquor is removed by centrifuge or filter press and may be further treated as part of an overall waste water treatment system.
    Type: Grant
    Filed: October 26, 1993
    Date of Patent: January 17, 1995
    Assignee: Thiokol Corporation
    Inventor: Glenn L. Mower
  • Patent number: 5346512
    Abstract: A process for treating reclaimed ammonium perchlorate with carbon to produce rounded particles upon recrystallization is disclosed. In the process, a recovered ammonium perchlorate solution is contacted with activated carbon, preferably by passage through a packed column. Contamination that modifies the ammonium perchlorate crystal habit and causes rhombic-shaped ammonium perchlorate particles is removed by activated carbon. The carbon-treated ammonium perchlorate solution produces rounded AP particles upon recrystallization with mechanical agitation.
    Type: Grant
    Filed: August 5, 1993
    Date of Patent: September 13, 1994
    Assignee: Thiokol Corporation
    Inventors: Kathryh F. Miks, Dennis J. Fife, Steven J. Bradley
  • Patent number: 5063041
    Abstract: The invention relates to a process for the reduction of the perchlorate content in electrolytes for chlorate production, whereby the electrolyte is subjected to the following process steps:a) a part of the flow of an electrolyte leaving the chlorate process is evaporated at an elevated temperature of from 30.degree. to 110.degree. C. and/or at a reduced pressure to a reduction in liquid volume of from 1 to 4 times,b) the product from the previous step is cooled to a temperature of from 30.degree. to 0.degree. C.,c) to the product from the previous step is added a potassium chloride solution with a concentration of at least 1.0 mole/l up to the saturation concentration,d) the product from the previous step is relieved of solid phase and recirculated to the chlorate process.
    Type: Grant
    Filed: December 27, 1989
    Date of Patent: November 5, 1991
    Assignee: Eka Nobel AB
    Inventor: Carl J. F. Wanngard
  • Patent number: 5009754
    Abstract: The objectionable hypochlorite values, ClO.sup.- ions, contained in a solution of an alkali metal perchlorate produced by the electrolysis of an aqueous solution of the corresponding chlorate of the alkali metal, are effectively destroyed (consumed) without adversely affecting the valence state of the hexavalent chromium values also contained therein, by intimately contacting such perchlorate solution with an effective amount of hydrogen peroxide such that the molar ratio available hydrogen peroxide/hypochlorites is at least one.
    Type: Grant
    Filed: February 22, 1990
    Date of Patent: April 23, 1991
    Assignee: Atochem
    Inventor: Christian Pralus
  • Patent number: 4990325
    Abstract: A low temperature method of producing beryllium chloride dietherate through the addition of hydrogen chloride gas to a mixture of beryllium metal in ether in a reaction vessel is described. A reflux condenser provides an exit for hydrogen produced form the reaction. A distillation condenser later replaces the reflux condenser for purifying the resultant product.
    Type: Grant
    Filed: November 22, 1989
    Date of Patent: February 5, 1991
    Assignee: The Babcock & Wilcox Company
    Inventors: Charles Bergeron, John E. Bullard, Evan Morgan
  • Patent number: 4854982
    Abstract: Liquid ammonia is maintained at the required operating conditions to efficiently and rapidly achieve propellant demilitarization including recovery of ammonia perchlorate (AP) for reuse, by an environmentally safe method to comminute and remove propellant from existing rocket motor hardware. The method is also applicable to both solid and ground composite propellant which includes scrap or waste propellant. A disclosed demilitarization unit employed in the ammonium perchlorate recovery method is comprised of a supply and high pressure spray system for liquid ammonia, an extraction system, oxidizer recovery system, and an ammonia recovery, drying, and recycling system. The method is workable at ambient temperature since ammonia is liquified under its own vapor pressure at 114 psig; however, increased temperature further enhances the extraction efficiency of the system.
    Type: Grant
    Filed: January 31, 1989
    Date of Patent: August 8, 1989
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: William S. Melvin, James F. Graham
  • Patent number: 4849201
    Abstract: A process for preparing chlorinated lime solid having an available chlorine ontent in the range of about 30 to about 50 weight percent by contacting a chlorine source, e.g., liquid chlorine, with a basic calcium-containing substance, e.g., hydrated lime, in the presence of water or aqueous calcium chlorine at a pH to produce an aqueous slurry having available chlorine content in the range of about 13 to 17 weight percent and a pH in the range of about 10.6 to 10.9 and containing an aqueous solution and a chlorinated lime precipitate combined with separating said slurry into an aqueous solution and a chlorinated lime precipitate having less than about 40 to 50 percent water combined with drying said chlorinated lime precipitate to produce chlorinated lime solid having the desired available chlorine content is disclosed.
    Type: Grant
    Filed: September 2, 1988
    Date of Patent: July 18, 1989
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Russell K. Smith, Edward R. Zamejc, James F. Miller
  • Patent number: 4698106
    Abstract: Solid oxidizer particles of ultrahigh surface area are produced by an etching process which includes employing selective extractants in a process which causes the formation of indentations and/or cavities on the surfaces of the oxidizer particles, and crevasses and tunnels in the oxidizer particles. The method is particularly attractive for manufacturing ultrahigh surface area ammonium perchlorate which has limited solubility in the extractants ethanol, butanol, or a mixture of these extractants.
    Type: Grant
    Filed: December 16, 1971
    Date of Patent: October 6, 1987
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: David C. Sayles
  • Patent number: 4472362
    Abstract: Crystalline 2-layer lithium aluminate, especially when carried in an ion exchange resin, is regenerated for use as an extractor for Li.sup.+ values in aqueous solution, said regeneration being done by using an aqueous wash containing at least about 800 ppm Li.sup.+ ion.
    Type: Grant
    Filed: August 30, 1982
    Date of Patent: September 18, 1984
    Assignee: The Dow Chemical Company
    Inventor: John L. Burba, III
  • Patent number: 4335091
    Abstract: Hydroxylammonium perchlorate is obtained by reacting a perchlorate-free hydroxylammonium salt with a perchlorate ions-donating compound, the reaction being carried out in aqueous solution with the aid of a cation exchanger, in parallel flow or preferably in countercurrent direction. The hydroxylammonium perchlorate is obtained in a high yield and in a high purity. It is suitable as oxidant in fuels.
    Type: Grant
    Filed: July 9, 1981
    Date of Patent: June 15, 1982
    Assignee: Riedel-de Haen Aktiengesellschaft
    Inventors: Eugen Scholz, Wolfgang Sievert
  • Patent number: 4216191
    Abstract: The present invention is directed to a method of preparing an inorganic-alkali metal salt of the formula:ZYwherein Z is an alkali metal selected from the group consisting of lithium and sodium, and wherein Y is an inorganic radical selected from the group consisting of SCN, CN, CNS, OCN, Br, I, Cl, NO.sub.2, NO.sub.3, ClO.sub.4, ReO.sub.4, and CF.sub.3 SO.sub.3. The method involves the reaction of a nitrogen-containing compound of the formula:QHYwherein Q is selected from the group consisting of specified nitrogen-containing groups, and wherein H is hydrogen and Y is as defined above, with an alkali metal compound of the formula:ZXwherein Z is defined above and wherein X is selected from the group consisting of hydrogen, specified nitrogen-containing radicals, and specified organic radicals. The reaction is carried out in ether solvent. In a preferred embodiment, Q is NH.sub.3 and X is hydrogen.
    Type: Grant
    Filed: May 1, 1979
    Date of Patent: August 5, 1980
    Assignee: Exxon Research & Engineering Co.
    Inventors: Lawrence P. Klemann, Eugene L. Stogryn
  • Patent number: 4176167
    Abstract: Alkali metal iodates are converted to the corresponding periodate by contacting the iodate with a hydroxide of the same or different alkali metal and an oxygen containing gas at temperatures of from 150.degree. C. to 600.degree. C.
    Type: Grant
    Filed: September 19, 1977
    Date of Patent: November 27, 1979
    Assignee: The Dow Chemical Company
    Inventors: Robert T. Jernigan, Byford D. Sheffield
  • Patent number: 4134967
    Abstract: Mono- and dibasic alkali metal periodates are prepared by reacting tri-, tetra- and pentabasic alkali metal periodates with a substance having a relative acidity value, pKa, of from 3 to 16 at a temperature of from 0.degree. to 100.degree. C at molar ratios of periodate to moles of acidic substance of 1:1 to 1:1000. The mono- and dibasic alkali metal periodates are useful in oxidizing olefins such as propylene to the corresponding oxide such as propylene oxide.
    Type: Grant
    Filed: September 19, 1977
    Date of Patent: January 16, 1979
    Assignee: The Dow Chemical Company
    Inventors: James E. Hillis, William P. Coker
  • Patent number: 4066736
    Abstract: A process for preparing concentrated solutions of hydroxylammonium nitrate (HAN) or hydroxylammonium perchlorate (HAP) which comprise reacting hydroxylammonium sulfate with either barium nitrate or barium perchlorate, in such a way that the dissolved barium salt is reacted with the dissolving hydroxylammonium sulfate while agitating the system so as to keep the slurried barium salt from directly contacting the hydroxylammonium sulfate. The rate of addition of the hydroxylammonium sulfate is slower than the rate of solution of the barium salt. An excess of barium nitrate or barium perchlorate ions is needed in the solution to which the hydroxylammonium sulfate is added until the reaction is terminated. The concentration of the HAN or HAP in the final solution can be increased still further if a solution of HAN or HAP is respectively used in forming the barium salt slurry.
    Type: Grant
    Filed: March 19, 1976
    Date of Patent: January 3, 1978
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Thomas Liggett
  • Patent number: 4065550
    Abstract: Lithium hexafluoroarsenate of high purity is prepared by a metathetical rtion between potassium hexafluoroarsenate and lithium perchlorate in an inert organic solvent such as methyl formate. The potassium perchlorate produced is insoluble in the solvent and can be readily separated from the lithium hexafluoroarsenate which is soluble in the solvent.
    Type: Grant
    Filed: January 31, 1977
    Date of Patent: December 27, 1977
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Walter B. Ebner, Charles Richard Walk
  • Patent number: 4023935
    Abstract: A method of making finely particulate ammonium perchlorate which comprises establishing a two-phase liquid system in which the upper phase is a concentrated solution of ammonium perchlorate and the lower phase is a liquid which is immiscible with the upper phase solvent and a non-solvent for ammonium perchlorate. Precipitation of ammonium perchlorate from the solution into the non-solvent is effected by either cooling the solution or evaporating the solvent thereof while subjecting the system to ultra-sonic vibrations. Fine ammonium perchlorate particles collect in the non-solvent phase and are recovered therefrom.
    Type: Grant
    Filed: September 15, 1971
    Date of Patent: May 17, 1977
    Assignee: Thiokol Corporation
    Inventors: Michael L. Levinthal, Gale F. Allred, Larry W. Poulter
  • Patent number: 4022811
    Abstract: Derivatives of perbromic acid of the formula: XBrO.sub.4 wherein X is Ag, H.sub.3).sub.2 CH, or (CH.sub.3).sub.2 C.sub.2 H.sub.3 prepared by a synthesis of silver perbromate through the reaction of dilute aqueous perbromic acid with silver oxide at a temperature from 0.degree. to 50.degree. C, followed by a removal of water and by a synthesis of isopropyl or isobutyl perbromate through the reaction of anhydrous silver perbromate suspended in a fluid selected from the class consisting of carbon tetrachloride, cyclohexane, and 1,1,2-trichlorotrifluoroethane with an alkyl bromide at a temperature from -25.degree. to 0.degree. C. Isopropyl and isobutyl perbromates are useful as oxidizing agents for alcohols.
    Type: Grant
    Filed: January 21, 1976
    Date of Patent: May 10, 1977
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Kurt Baum, Charles D. Beard, Vitautas Grakaukas
  • Patent number: 4012492
    Abstract: Preparation of titanium tetraperchlorate, vanadium perchlorate, and chromyl erchlorate by the reactions of chlorine perchlorate with the respective anhydrous metal chlorides at a temperature from about -45.degree. C to about 20.degree. C. These perchlorates are useful in compounding gas generating compositions.
    Type: Grant
    Filed: June 10, 1975
    Date of Patent: March 15, 1977
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Carl J. Schack, Donald Pilipovich
  • Patent number: 3979313
    Abstract: A bleaching composition comprising a hydrogen peroxide adduct having the formula:4Na.sub.2 SO.sub.4.sup.. 2H.sub.2 O.sub.2.sup.. NaCland an activating agent.
    Type: Grant
    Filed: July 7, 1975
    Date of Patent: September 7, 1976
    Assignees: Kao Soap Co., Ltd., Nippon Peroxide Co., Ltd.
    Inventors: Yunosuke Nakagawa, Shigetsugu Sugiura, Kinjiro Matsunaga, Yoshio Ito
  • Patent number: RE34419
    Abstract: Liquid ammonia is maintained at the required operating conditions to efficiently and rapidly achieve propellant demilitarization including recovery of ammonia perchlorate (AP) for reuse, by an environmentally safe method to comminute and remove propellant from existing rocket motor hardware. The method is also applicable to both solid and ground composite propellant which includes scrap or waste propellant. A disclosed demilitarization unit employed in the ammonium perchlorate recovery method is comprised of a supply and high pressure spray system for liquid ammonia, an extraction system, oxidizer recovery system, and an ammonia recovery, drying,* and recycling system. The method is workable at ambient temperature since ammonia is liquified under its own vapor pressure at 114 psig; however, increased temperature further enhances the extraction efficiency of the system.
    Type: Grant
    Filed: June 25, 1990
    Date of Patent: October 26, 1993
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: William S. Melvin, James F. Graham