Patents Assigned to Olin
  • Solvent recovery from gaseous mixtures produced in the manufacture of cyanuric acid
    Patent number: 4223140
    Abstract: A process is provided for solvent recovery from a hot gaseous mixture comprised of ammonia, carbon dioxide, cyanuric acid particles, and solvent vapors. The process comprises scrubbing the hot gaseous mixture with a liquid solvent to remove the cyanuric acid particles and to form a scrubbed gaseous mixture. The scrubbed gaseous mixture is cooled to form condensed liquid solvent and a cooled gaseous mixture containing traces of the solvent. The temperature of the cooled gaseous mixture is kept above that at which ammonium carbamate is formed by the reaction of ammonia with carbon dioxide. Condensed liquid solvent is separated from the cooled gaseous mixture and the cooled gaseous mixture is contacted with additional liquid solvent to form a substantially solvent-free gaseous mixture.
    Type: Grant
    Filed: August 20, 1979
    Date of Patent: September 16, 1980
    Assignee: Olin Corporation
    Inventors: Louis C. Hirdler, Raymond J. Smialek
  • Process for the preparation of low hydrogen overvoltage cathodes
    Patent number: 4221643
    Abstract: An improved process is described for the electrodeposition of both a low overvoltage metal and a sacrificial metal onto an electrically conductive substrate. The sacrificial metal is later removed by leaching the electroplated substrate with sodium hydroxide. The improvement comprises adding a sacrificial metal to the electroplating solution after electrodeposition is initiated. The amount of electric current supplied to the electroplating solution during electrodeposition may be increased or decreased to increase the surface area and the electrochemical activity of the electroplated substrate.
    Type: Grant
    Filed: August 2, 1979
    Date of Patent: September 9, 1980
    Assignee: Olin Corporation
    Inventors: Ronald C. Miles, Larry D. Carpenter
  • Method of securing a Moineau pump stator
    Patent number: 4221036
    Abstract: A method of assembling progressing cavity pump of the Moineau type having a helically externally threaded rotor coacting with an internally helically threaded stator. In a Moineau pump where the pump casing is a singular tubular unit, the stator is normally bonded to the inside of a tubular housing with an adhesive. When such pumps are used to pump a corrosive fluid, such as caustic soda, the adhesive can be attached and the stator thus freed to rotate. To prevent the stator from rotating, studs are driven through the housing and into the stator. The location of these studs can be pre-marked by use of a suitable template. Also, the driven studs can be welded to the housing to prevent leakage or loosening.
    Type: Grant
    Filed: January 4, 1979
    Date of Patent: September 9, 1980
    Assignee: Olin Corporation
    Inventors: Darl M. McCoy, Charles W. Hawk, Jr.
  • Water and color retention treatment for frozen processed shrimp
    Patent number: 4221819
    Abstract: In a process for treating shrimp that comprises (a) soaking whole, peeled and deveined shrimp in an aqueous solution containing at least one phosphate salt; and (b) thereafter freezing said soaked shrimp to preserve the shrimp for later cooking and consumption; wherein the improvement comprises carrying out sait soaking step for sufficient time and in the presence of an effective amount of a trace metal salt selected from the group consisting of calcium salts, magnesium salts, and mixtures thereof, in order to substantially maintain the trace metal content in said shrimp, whereby said treated shrimp will have white tissue coloration and a natural tender texture after cooking.
    Type: Grant
    Filed: April 26, 1979
    Date of Patent: September 9, 1980
    Assignee: Olin Corporation
    Inventors: Kenneth J. Falci, Robert N. Scott
  • Cyanuric acid manufacture
    Patent number: 4220769
    Abstract: A process for producing cyanuric acid by pyrolyzing urea in a solvent in a closed reactor having interior surfaces exposed to a gas zone, the improvement which comprises contacting the interior surfaces of the closed reactor with solvent in the presence of heat to inhibit the formation of solid deposits on the interior reactor surfaces.The process maintains high rates of heat transfer during the reaction period and reduces the frequency and cost of reactor cleaning.
    Type: Grant
    Filed: July 2, 1979
    Date of Patent: September 2, 1980
    Assignee: Olin Corporation
    Inventors: Raymond J. Smialek, Neal E. Morganson
  • Catalytic method for hydrolyzing urea
    Patent number: 4220635
    Abstract: A method for hydrolyzing urea in aqueous solutions such as waste-water streams which comprises heating the aqueous solution containing urea in the presence of a catalytic amount of a vanadium compound for sufficient time and at sufficient temperatures to effect hydrolysis of at least a portion of the urea to ammonia and carbon dioxide.
    Type: Grant
    Filed: May 14, 1979
    Date of Patent: September 2, 1980
    Assignee: Olin Corporation
    Inventor: Lorenz P. Schell
  • Process for the production of polychloroisocyanuric acids
    Patent number: 4220768
    Abstract: A process for the production of polychloroisocyanuric acids in which a depressant is added to the reaction mixture. The polychloroisocyanuric acid particles produced have improved filterability and the formation of foam during the reaction is greatly reduced. Depressants employed are alkali metal salts of alkyl esters or sulfonated alkyl esters of dicarboxylic acids or ethylene oxide terminated alkoxylated alcohols having a cloud point of up to about 50.degree. C.
    Type: Grant
    Filed: May 18, 1978
    Date of Patent: September 2, 1980
    Assignee: Olin Corporation
    Inventors: John A. Wojtowicz, Michael Scardera
  • Stabilization of amine catalysts in a composition with halogenated polyols for use in polyurethane foam production
    Patent number: 4219624
    Abstract: A catalytically stabilized polyol composition is disclosed for use in the production of polyurethane foam. The composition comprises a halogenated polyol and an acid-blocked amine catalyst.
    Type: Grant
    Filed: November 20, 1978
    Date of Patent: August 26, 1980
    Assignee: Olin Corporation
    Inventor: Stephen Fuzesi
  • Baffled venting of gas from a powder actuated tool
    Patent number: 4218005
    Abstract: The venting of fouled combustion gases from the bore of a piston-type powder actuated fastening tool is provided by forming a gas vent which defines a gas flow path extending through the piston pawl return mechanism mounting to the atmosphere. A gas chamber is provided within the pawl mounting which chamber is vented to the atmosphere. A series of baffles is disposed within the pawl mounting in the gas path to provide for cooling of the hot combustion gases.
    Type: Grant
    Filed: July 30, 1979
    Date of Patent: August 19, 1980
    Assignee: Olin Corporation
    Inventor: Frederick J. Harris
  • Halogenated tertiary phosphite esters
    Patent number: 4218405
    Abstract: Disclosed are novel halogenated tertiary phosphite esters which are the reaction product of 4,4,4-trichloro-1,2-epoxybutane or 2,4,4,4-tetrachlorobutanol with a phosphorus trihalide. These compounds are useful as flame retardant additives in plastic resin compositions.
    Type: Grant
    Filed: April 26, 1978
    Date of Patent: August 19, 1980
    Assignee: Olin Corporation
    Inventor: Richard J. Turley
  • Apparatus for perforating webs with high intensity, coherent radiation
    Patent number: 4218606
    Abstract: A system is provided for controlling the porosity of a web or film as perforated by high intensity, coherent radiation. In particular, there is included a laser for providing at least one beam of high intensity, coherent radiation that is directed onto a web that is moved past the beam. The porosity of the web is measured and compared with an operator-set reference of porosity to control the focus of the coherent radiation, whereby the size of the resultant perforation and therefore the porosity of the web is controlled. In one embodiment of this invention, the position of a lens to focus the coherent radiation is adjusted. In a further embodiment, a support surface for receiving the web is adjusted with respect to the fixed facus laser beam to control the size of the perforation or opening created by the beam of coherent radiation.
    Type: Grant
    Filed: October 3, 1978
    Date of Patent: August 19, 1980
    Assignee: Olin Corporation
    Inventor: Hobart A. Whitman, III
  • Method of sealing separators for electrolytic cells for alkali metal chloride brines
    Patent number: 4218275
    Abstract: Separator materials suitable for use in electrolytic cells, for example, for the electrolysis of alkali metal chloride brines, are sealed by a method which comprises coating the sections to be sealed with a synthetic thermoplastic sealing agent and ultrasonically sealing the coated portions.The method permits the sealing-in-place of separator materials and allows them to be unsealed and resealed without damage to the separators.
    Type: Grant
    Filed: February 3, 1978
    Date of Patent: August 19, 1980
    Assignee: Olin Corporation
    Inventors: Igor V. Kadija, Kenneth E. Woodard, Jr.
  • Strip material center guide assembly
    Patent number: 4218002
    Abstract: A method and apparatus are disclosed for automatically centering running lengths of strip material of different widths. The strip material is passed between an elongated air source and an elongated pressure pickup device. Depending on whether and in which way the strip moves laterally off center a conductive diaphragm located within a sensing device is deflected by a differential air pressure causing electric and hydraulic control circuits to adjust a steering roll thereby continuously and automatically centering the strip material.
    Type: Grant
    Filed: May 31, 1979
    Date of Patent: August 19, 1980
    Assignee: Olin Corporation
    Inventor: John M. Whalen
  • Coated perfluorosulfonic acid resin membranes and a method for their preparation
    Patent number: 4217198
    Abstract: An improved cation-exchange membrane for use in electrolytic processes which is comprised of a film of a perfluorosulfonic acid resin having a fluoroalkyl resin coating. The improved membrane is produced by applying an uncured fluoroalkyl resin in liquid form to a surface of the film and curing the fluoroalkyl resin to provide a solid coating on the surface of the film. The improved membrane provides efficient ion separation properties at reduced costs for energy.
    Type: Grant
    Filed: March 23, 1979
    Date of Patent: August 12, 1980
    Assignee: Olin Corporation
    Inventors: Igor V. Kadija, Kenneth E. Woodard, Jr.
  • Process for purification and recovery of cyanuric acid
    Patent number: 4216315
    Abstract: A process is described for the purification and recovery of cyanuric acid from a hot slurry of cyanuric acid in an organic solvent. In the process, the hot slurry is quenched in a quench liquid which is at a temperature for cooling the hot slurry to form a cooled slurry of cyanuric acid particles in a mixture of the solvent and the quench liquid. Cyanuric acid particles are separated from the mixture of solvent and quench liquid and recovered.The process effectively cools and separates cyanuric acid from the solvent and any color bodies present to produce a pure white crystalline product.
    Type: Grant
    Filed: May 4, 1979
    Date of Patent: August 5, 1980
    Assignee: Olin Corporation
    Inventors: Harvie H. Lewis, Neal E. Morganson, Raymond J. Smialek
  • Anti-parallel inductors for shape control in electromagnetic casting
    Patent number: 4215738
    Abstract: A method and apparatus for electromagnetic casting of metals and alloys is disclosed wherein anti-parallel inductors are utilized between the main inductor and the ingot being cast to provide for shape control of the ingot.
    Type: Grant
    Filed: March 30, 1979
    Date of Patent: August 5, 1980
    Assignee: Olin Corporation
    Inventors: Gerhard K. Gaule, John C. Yarwood, Derek E. Tyler
  • High current cell-shorting switches
    Patent number: 4216364
    Abstract: A high current cell-shorting switch is provided with removable bus bar tips having an enlarged beveled area of contact. A plurality of movable tapered bridge contacts are arranged along a main shaft such that upon rotation of the shaft a plurality of the bridge contacts are simultaneously driven into spanning contact with two of the bus bar tips. The main shaft is supported by pairs of split collars which can be easily separated thereby permitting removal of the main shaft and associated contacts. Upon separation, the switch contacts and bus bar tips may be easily removed for refurbishing or replacement.
    Type: Grant
    Filed: December 4, 1978
    Date of Patent: August 5, 1980
    Assignee: Olin Corporation
    Inventors: Martin H. Dempsey, James F. Rooney
  • Diaphragms for use in the electrolysis of alkali metal chlorides
    Patent number: 4216072
    Abstract: A diaphragm for use in the electrolysis of alkali metal chloride brines in electrolytic diaphragm cells is comprised of a support fabric impregnated with a mixture of a non-fibrous component containing silica and glass fibers. The diaphragms are physically and chemically stable and have increased operational life.
    Type: Grant
    Filed: November 10, 1977
    Date of Patent: August 5, 1980
    Assignee: Olin Corporation
    Inventor: Igor V. Kadija
  • Method for adjusting anodes
    Patent number: 4214959
    Abstract: An improved method for adjusting the space between an adjustable anode and a cathode in an electrolytic cell wherein current measurements and voltage measurements are obtained and compared with predetermined standards. Measurements of deviation from predetermined standards are employed to determine the direction of anode adjustment. The current is balanced between the individual anode posts of the anode sets and between the individual anode sets of an electrolytic cell within predetermined limits.
    Type: Grant
    Filed: April 26, 1979
    Date of Patent: July 29, 1980
    Assignee: Olin Corporation
    Inventor: Thomas L. Cummings
  • Plated metallic cathode with porous copper subplating
    Patent number: 4214954
    Abstract: A low overvoltage cathode is disclosed which has a metal substrate plated with a porous coating of dendritic copper which is in turn plated with a low overvoltage metal alloy. The substrate is preferably copper and the low overvoltage alloy is preferably a Ni-Mo alloy.
    Type: Grant
    Filed: December 4, 1978
    Date of Patent: July 29, 1980
    Assignee: Olin Corporation
    Inventor: Han C. Kuo