Patents Represented by Attorney James B. Haglind
  • Patent number: 5264089
    Abstract: A continuous process for producing chlorine dioxide which comprises feeding an aqueous solution of an alkali metal chlorate to a first ion exchange compartment of an electrolytic cell having an anode compartment, a cathode compartment and at least one ion exchange compartment between the anode compartment and the cathode compartment, electrolyzing an anolyte in the anode compartment to generate hydrogen ions, passing the hydrogen ions from the anode compartment through a cation exchange membrane into the first ion exchange compartment to displace alkali metal ions and produce an aqueous solution of chloric acid and alkali metal chlorate, passing alkali metal ions from the first ion exchange compartment into the cathode compartment, and reacting in a chlorine dioxide generator the aqueous solution of chloric acid and alkali metal chlorate substantially free of anionic and cationic impurities with a reducing agent which does not form persistent anions in the generator solution, to generate chlorine dioxide and
    Type: Grant
    Filed: July 24, 1992
    Date of Patent: November 23, 1993
    Assignee: Olin Corporation
    Inventors: Jerry J. Kaczur, David W. Cawlfield
  • Patent number: 5258105
    Abstract: An aqueous solution of chloric acid and alkali metal chlorate is produced in an electrolytic cell having an anode compartment, a cathode compartment, and at least one ion exchange compartment between the anode compartment and the cathode compartment.
    Type: Grant
    Filed: October 31, 1991
    Date of Patent: November 2, 1993
    Assignee: Olin Corporation
    Inventors: Jerry J. Kaczur, David W. Cawlfield, Kenneth E. Woodard, Jr., Budd L. Duncan
  • Patent number: 5254227
    Abstract: A process for removing an ionic impurity from an impure substantially non-aqueous liquid passes the impure non-aqueous liquid through at least one ion exchange compartment containing an ion exchange medium. The ion exchange compartment is separated from an anode compartment and a cathode compartment by ion exchange membranes, where the ion exchange membranes and ion exchange medium having functional groups of the opposite charge as that of the ionic impurity. An electric current is conducted across the ion exchange compartment substantially transverse to the direction of flow of the impure non-aqueous liquid, and transporting the ionic impurity through an ion exchange membrane to separate the ionic impurity from the non-aqueous liquid.
    Type: Grant
    Filed: November 15, 1991
    Date of Patent: October 19, 1993
    Assignee: Olin Corporation
    Inventors: David W. Cawlfield, Jerry J. Kaczur, Hassan Arabghani
  • Patent number: 5242554
    Abstract: An aqueous solution of chloric acid and alkali metal chlorate is produced in an electrolytic cell having an anode compartment, a cathode compartment, and at least one ion exchange compartment between the anode compartment and the cathode compartment, in a process which comprises:a) feeding an aqueous solution of an alkali metal chlorate to the ion exchange compartment,b) passing hydrogen and alkali metal ions from the anode compartment through a cation exchange membrane into the ion exchange compartment, wherein the hydrogen ions displace alkali metal ions to produce an aqueous solution of chloric acid and alkali metal chlorate,c) passing alkali metal ions from the ion exchange compartment into the cathode compartment,d) electrolyzing the aqueous solution of chloric acid and alkali metal chlorate in the anode compartment to produce an aqueous solution of chloric acid, alkali metal chlorate, hydrogen ions and perchlorate ions as a minor constituent.
    Type: Grant
    Filed: October 8, 1992
    Date of Patent: September 7, 1993
    Assignee: Olin Corporation
    Inventors: Jerry J. Kaczur, David W. Cawlfield, Julian F. Watson, Cortie J. Rolison, III, Sudhir K. Mendiratta, Robert T. Brooker
  • Patent number: 5223617
    Abstract: A process for producing a chloroisocyanuric acid compound which comprises reacting cyanuric acid with a chlorinating agent consisting of an aqueous solution of hypochlorous acid substantially free of ionic impurities having a pH of less than about 2. The process produces chloroisocyanuric acid compounds with reduced volumes of effluent solutions and significantly reduced amounts of gas released during operation. The novel process for producing chloroisocyanuric acid compounds can employ solid forms of cyanuric acid as a reactant.
    Type: Grant
    Filed: October 24, 1991
    Date of Patent: June 29, 1993
    Assignee: Olin Corporation
    Inventors: Wayne H. Hammond, John H. Shaffer, John A. Wojtowicz, Leslie R. Ward, Joseph M. Borcz
  • Patent number: 5194238
    Abstract: A process for producing sodium hypochlorite slurries admixes a hypochlorous acid solution having a concentration of 35 percent or greater by weight of HOCl with sodium hydroxide at a temperature below about 25.degree. C. The reaction produces a slurry of sodium hypochlorite pentahydrate in an aqueous solution of sodium hypochlorite where the sodium hypochlorite is present in a concentration of at least 35 percent by weight of NaOCl. The sodium hypochlorite slurries have improved stability and greatly reduced amounts of sodium chloride. The process for produces high strength sodium hypochlorite compositions of high purity having improved yields and reduced product decomposition.
    Type: Grant
    Filed: April 8, 1992
    Date of Patent: March 16, 1993
    Assignee: Olin Corporation
    Inventors: Budd L. Duncan, Richard C. Ness
  • Patent number: 5114647
    Abstract: A method for producing sanitizing compositions in compressed form which includes:a) admixing an alkali metal carbonate with a solid water soluble aliphatic carboxylic acid to form an acidic mixture,b) compressing the acidic mixture to produce a compressed form of the acidic mixture,c) crushing the compressed form to produce granules of the acidic mixture, and,d) admixing granules of the acidic mixture with an alkali metal chloroisocyanurate, and an alkali metal bicarbonate to produce a sanitizing composition.
    Type: Grant
    Filed: February 1, 1991
    Date of Patent: May 19, 1992
    Assignee: Olin Corporation
    Inventors: Kenneth J. Levesque, Roy P. Alexander
  • Patent number: 5106465
    Abstract: A process for electrolytically producing an aqueous solution of chlorine dioxide in an electrolytic cell having an anode compartment, a cathode compartment, and at least one ion exchange compartment between the anode compartment and the cathode compartment, the process comprising feeding an aqueous solution of an alkali metal chlorite to the ion exchange compartment, electrolyzing an anolyte in the anode compartment to generate hydrogen ions, passing the hydrogen ions from the anode compartment through a cation exchange membrane into the ion exchange compartment to displace alkali metal ions and produce an aqueous solution of chlorine dioxide, and passing alkali metal ions from the ion exchange compartment into the cathode compartment.
    Type: Grant
    Filed: December 17, 1990
    Date of Patent: April 21, 1992
    Assignee: Olin Corporation
    Inventors: Jerry J. Kaczur, David W. Cawlfield
  • Patent number: 5102648
    Abstract: A process for producing lithium hypochlorite which admixes an aqueous hypochlorous acid solution, having a concentration of 35 percent or greater by weight of HOCl, with an aqueous slurry of lithium hydroxide at a temperature in the range of from about 0.degree. to about 20.degree. to produce a solution of substantially pure lithium hypochlorite. The lithium hypochlorite solutions produced can be dried directly or concentrated by cooling. The solid lithium hypochlorite produced is a highly pure source of available chlorine.
    Type: Grant
    Filed: February 25, 1991
    Date of Patent: April 7, 1992
    Assignee: Olin Corporation
    Inventors: Budd L. Duncan, Larry D. Carpenter, Leslie R. Osborne, William T. Wooden
  • Patent number: 5098679
    Abstract: A process for treating an alkali metal hydrosulfite solution which comprises contacting the alkali metal hydrosulfite solution with aluminum in a reaction mixture, and admixing carbon dioxide gas with the reaction mixture to remove dissolved aluminum as an aluminum-containing precipitate, the alkali metal hydrosulfite solution having a residual alkalinity of from about 0.1 to about 20 grams per liter of hydroxide ion.
    Type: Grant
    Filed: July 17, 1991
    Date of Patent: March 24, 1992
    Assignee: Olin Corporation
    Inventor: Karl O. Knollmueller
  • Patent number: 5092970
    Abstract: A process for electrolytically producing an aqueous solution of chlorine dioxide in an electrolytic cell having an anode compartment, a cathode compartment, and at least one ion exchange compartment between the anode compartment and the cathode compartment, the process comprising feeding an aqueous solution of an alkali metal chlorite to the ion exchange compartment, electrolyzing an anolyte in the anode compartment to generate hydrogen ions, passing the hydrogen ions from the anode compartment through a cation exchange membrane into the ion exchange compartment to displace alkali metal ions and produce an aqueous solution of chlorine dioxide, and passing alkali metal ions from the ion exchange compartment into the cathode compartment.
    Type: Grant
    Filed: December 20, 1989
    Date of Patent: March 3, 1992
    Assignee: Olin Corporation
    Inventors: Jerry J. Kaczur, David W. Cawlfield
  • Patent number: 5091165
    Abstract: A calcium hypochlorite composition consists essentially of at least 75 percent by weight of Ca(OCl).sub.2, from about 6 to about 14 percent by weight of water, and less than 1.5 percent by weight of an alkali metal chloride. The novel composition provides increased amounts of sanitizing and disinfecting to, for example, water bodies while remaining safe with respect to thermal decomposition. Further, the composition reduces the rate of chlorine evolution during storage.
    Type: Grant
    Filed: July 23, 1990
    Date of Patent: February 25, 1992
    Assignee: Olin Corporation
    Inventors: John H. Shaffer, James K. Melton, Garland E. Hilliard
  • Patent number: 5089095
    Abstract: A process for producing chlorine dioxide by oxidizing a hypochlorous acid solution to produce a chloric acid solution, and, electrolyzing the chloric acid solution to produce chlorine dioxide.The novel process of the present invention provides a commercially viable process for producing the chloric acid and eliminates the formation of an acidic salt solution in the production of chlorine dioxide which requires disposal. Further, the process permits a reduction in the amount of acid required in the generation of chlorine dioxide.
    Type: Grant
    Filed: March 30, 1990
    Date of Patent: February 18, 1992
    Assignee: Olin Corporation
    Inventors: David W. Cawlfield, Jerry J. Kaczur, Budd L. Duncan, Sudhir K. Mendiratta, Ronald L. Dotson, Kenneth E. Woodard, Jr.
  • Patent number: 5084148
    Abstract: A process for electrolytically producing an aqueous solution of chloric acid and alkali metal chlorate in an electrolytic cell having an anode compartment, a cathode compartment, and at least one ion exchange compartment between the anode compartment and the cathode compartment. The process includes the steps of feeding an aqueous solution of an alkali metal chlorate to the ion exchange compartment, electrolyzing an anolyte in the anode compartment to generate hydrogen ions, passing the hydrogen ions from the anode compartment through a cation exchange membrane into the ion exchange compartment to displace alkali metal ions and produce an aqueous solution of chloric acid and alkali metal chlorate, and passing alkali metal ions from the ion exchange compartment into the cathode compartment.
    Type: Grant
    Filed: February 6, 1990
    Date of Patent: January 28, 1992
    Assignee: Olin Corporation
    Inventors: Jerry J. Kazcur, David W. Cawlfield, Kenneth E. Woodard, Jr., Budd L. Duncan
  • Patent number: 5066416
    Abstract: A moldable detergent having a stable available halogen concentration suitable for use in industrial and institutional dishwashers is produced in a process which comprises:admixing an alkali metal polyphosphate compound, an alkali metal silicate compound, and an aqueous solution of an available halogen compound to form an available halogen containing mixture, andadmixing an alkali metal phosphate compound to produce a moldable detergent composition containing at least 50 percent by weight of solids and having an available halogen concentration of at least about 1 percent by weight.
    Type: Grant
    Filed: August 31, 1987
    Date of Patent: November 19, 1991
    Assignee: Olin Corporation
    Inventor: Douglas R. Martin
  • Patent number: 5062966
    Abstract: A process for decomposing a solution of a hydroxylammonium compound includes raising the pH of the solution to about 8 or higher and reacting the alkaline solution with a source of hypohalite ions. The process decomposes solutions of hydroxylammonium salts in a manner which produces benign liquid and gas effluents which can be readily disposed of or discharged.
    Type: Grant
    Filed: November 2, 1990
    Date of Patent: November 5, 1991
    Assignee: Olin Corporation
    Inventors: Ronald L. Dotson, Sanders H. Moore
  • Patent number: 5055285
    Abstract: A process for producing potassium hypochlorite solutions by admixing a hypochlorous acid solution having a concentration of 35 percent or greater by weight of HOCl with an aqueous slurry of potassium hydroxide containing 35 percent by weight or greater of KOH at a temperature below about 45.degree. C. The potassium hypochlorite solution produced has a concentration of at least 25 percent to about 60 percent by weight of KOCl.
    Type: Grant
    Filed: February 1, 1990
    Date of Patent: October 8, 1991
    Assignee: Olin Corporation
    Inventors: Budd L. Duncan, William O. Flowers
  • Patent number: 5037627
    Abstract: A process for producing hypochlorous acid by reacting an aqueous solution of an alkali metal hydroxide in droplet form with gaseous chlorine to produce hypochlorous acid vapor and solid alkali metal chloride particles in which the improvement comprises employing molar ratios of gaseous chlorine to the alkali metal hydroxide of at least about 22:1.The process achieves high yields of hypochlorous acid by minimizing side reactions including the formation of chlorate as an impurity in the alkali metal chloride particles produced.The hypochlorous acid solution produced contains from about 35 to about 60 percent by weight of HOCl, a dissolved chlorine concentration of less than about 2 percent by weight, and is substantially free of alkali metal ions and chloride ions.
    Type: Grant
    Filed: October 25, 1989
    Date of Patent: August 6, 1991
    Assignee: Olin Corporation
    Inventors: James K. Melton, John H. Shaffer, Garland E. Hilliard, John A. Wojtowicz
  • Patent number: 5035775
    Abstract: A process for producing hydrazine containing at least 98 percent by weight of N.sub.2 H.sub.4 which admixes an aqueous solution of hydrazine with an alkali metal hydroxide to form a hydrazine solution having a N.sub.2 H.sub.4 concentration of at least 70 percent by weight. The molar ratio of alkali metal hydroxide to water is less than about 0.5:1. The concentrated hydrazine solution is distilled in a fractional distillation apparatus at an overhead vapor temperature below about 50.degree. C. and at a pressure of less than about 60 mm Hg.
    Type: Grant
    Filed: February 9, 1989
    Date of Patent: July 30, 1991
    Assignee: Olin Corporation
    Inventors: Allen B. Quackenbush, James G. Rigsby
  • Patent number: 5034202
    Abstract: A process for treating an alkali metal hydrosulfite solution which comprises contacting the alkali metal hydrosulfite solution, having a residual alkalinity of from about 1 to about 20 grams per liter of hydroxide ion, with aluminum. The process of the invention can be operated at low temperatures i.e., those which are normally used for storage of the sodium hydrosulfite solution to minimize thermal decomposition.
    Type: Grant
    Filed: December 21, 1990
    Date of Patent: July 23, 1991
    Assignee: Olin Corporation
    Inventor: Karl O. Knollmueller