Patents Represented by Attorney Thomas P. O'Day

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  • Deflected flow inlet system for mercury cells
    Patent number: 4152237
    Abstract: A deflected flow inlet system for use in mercury-type electrolytic cells to help prevent inlet flow from jumping the inlet channel and splattering the mercury cathode onto the anodes.
    Type: Grant
    Filed: August 28, 1978
    Date of Patent: May 1, 1979
    Assignee: Olin Corporation
    Inventors: Haskell L. McAllister, Billy E. Scoggins
  • Plated metallic cathode with porous copper subplating
    Patent number: 4152240
    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: May 1, 1978
    Date of Patent: May 1, 1979
    Assignee: Olin Corporation
    Inventor: Han C. Kuo
  • Process for producing defluorinated phosphate rock granules
    Patent number: 4152398
    Abstract: An improved process is described for preparing defluorinated phosphate rock (DPR) granules useful as animal feed from fluorine-containing phosphate rock.
    Type: Grant
    Filed: June 9, 1977
    Date of Patent: May 1, 1979
    Assignee: Olin Corporation
    Inventor: Harold V. Larson
  • Process for producing pentachloro-nitrobenzene
    Patent number: 4147732
    Abstract: An improvement is disclosed in the preparation of pentachloronitrobenzene by the nitration of pentachlorobenzene. The improvement, which is primarily aimed at reducing the residual level of the undesirable starting material, pentachlorobenzene, in the product, includes a two-stage reactant mixing step wherein the pentachlorobenzene is first mixed with sulfuric acid and then concentrated nitric acid is added to this mixture.
    Type: Grant
    Filed: February 27, 1978
    Date of Patent: April 3, 1979
    Assignee: Olin Corporation
    Inventor: Sudhir K. Mendiratta
  • Method for producing ammonium phosphate which is substantially free of arsenic
    Patent number: 4147757
    Abstract: A process for producing ammonium phosphate that is substantially free of arsenic which comprises:(a) reacting crude phosphoric acid containing dissolved arsenic having a +5 valence state with ammonia and arsenic-reducing agent in sufficient proportions to form an ammonium phosphate solution and to reduce the arsenic from the +5 valence state;(b) forming ammonium phosphate crystals from said solution, leaving a mother liquor that contains substantially all of said arsenic; and(c) recovering said ammonium phosphate crystals that are substantially free of arsenic from said mother liquor.
    Type: Grant
    Filed: November 18, 1977
    Date of Patent: April 3, 1979
    Assignee: Olin Corporation
    Inventors: Thomas E. Richards, Santad Kongpricha
  • Alkoxysilane cluster surfactants for rigid polyurethane foam
    Patent number: 4147846
    Abstract: Described is a process for making rigid polyurethane foam from a reaction formulation including a novel surfactant composition comprising select trialkoxysilanols or alkoxysilane cluster compounds.
    Type: Grant
    Filed: August 17, 1978
    Date of Patent: April 3, 1979
    Assignee: Olin Corporation
    Inventors: Stephen L. Goldstein, David F. Gavin
  • Generation of polyurethane foam
    Patent number: 4147746
    Abstract: An improvement in the generation of foam from a mixture of foam-forming material in a structure having a preferred configuration. Conveying means are used to convey the structure along a horizontal path. A plurality of foam gun heads are mounted in spaced relationship to each other over and transverse to said horizontal path. Each foam gun head includes a foam dispensing outlet and valve means for controlling the discharges of the foam-forming materials therefrom. First, sensing means are provided upstream of the foam dispensing outlets for sensing the passage of the structure thereby. A plurality of second sensing means are positioned upstream of the foam dispensing outlets in spaced relationship to each other in a direction transverse to the horizontal path, each one of the second sensing means being associated with one foam gun head for sensing the presence of the structure in a vertical direction.
    Type: Grant
    Filed: February 21, 1978
    Date of Patent: April 3, 1979
    Assignee: Olin Corporation
    Inventors: Gerald V. Dever, Jr., Louis R. Chiocchio
  • Generation of polyurethane foam
    Patent number: 4144295
    Abstract: An improvement in the generation of foam from a mixture of foam-forming material in a structure having a preferred configuration. Conveying means are used to convey the structure along a horizontal path. A plurality of foam gun heads are mounted in spaced relationship to each other over and transverse to said horizontal path. Each foam gun head includes a foam dispensing outlet and valve means for controlling the discharges of the foam-forming materials therefrom. First, sensing means are provided upstream of the foam dispensing outlets for sensing the passage of the structure thereby. A plurality of second sensing means are positioned upstream of the foam dispensing outlets in spaced relationship to each other in a direction transverse to the horizontal path, each one of the second sensing means being associated with one foam gun head for sensing the presence of the structure in a vertical direction.
    Type: Grant
    Filed: January 30, 1978
    Date of Patent: March 13, 1979
    Assignee: Olin Corporation
    Inventor: Gerald V. Dever, Jr.
  • Chemical generation apparatus
    Patent number: 4143115
    Abstract: An improved chemical generation apparatus particularly adapted to the generation of chlorine dioxide. This apparatus includes a generation vessel having at least two reducing couplings attached thereto by leak-proof joints thereby forming at least one inlet and at least one outlet to said vessel. The reducing couplings advantageously have surfaces which form an angle of at least 110.degree. with the vessel walls to create a geometry which prevents chemical buildup during operation of the apparatus. The apparatus also has sources of supply for each of the reactive materials connected to said inlet of the vessel though a metering means and an injection check valve.
    Type: Grant
    Filed: February 11, 1977
    Date of Patent: March 6, 1979
    Assignee: Olin Corporation
    Inventors: William J. Ward, Kenneth E. Gasper
  • Process for making selected 3-trihalomethyl-5-lower alkoxy-1,2,4-thiadiazoles
    Patent number: 4143044
    Abstract: A process for producing selected 3-trihalomethyl-5-lower alkoxy-1,2,4-thiadiazole compounds by the reaction of N-halotrihaloacetamidines with alkali metal xanthate salts.
    Type: Grant
    Filed: April 5, 1978
    Date of Patent: March 6, 1979
    Assignee: Olin Corporation
    Inventors: Eugene F. Rothgery, Hans Juergen A. Schroeder
  • Graft copolymers from vinyl monomers and unsaturated polyols containing alkenyl aryl constituents and polyurethanes prepared therefrom
    Patent number: 4140667
    Abstract: Graft copolymers of vinyl monomers and unsaturated polyols are described. These copolymers are prepared by the polymerization of an ethylenically unsaturated monomer, or a mixture of such monomers, in a polyol comprising an alkenyl aryl polyol. The alkenyl aryl constituents render the polyols compatible for graft copolymerization with the vinyl monomers. The graft copolymers are useful in polyurethane formulations.
    Type: Grant
    Filed: March 31, 1977
    Date of Patent: February 20, 1979
    Assignee: Olin Corporation
    Inventors: Frank J. Preston, Kiran B. Chandalia
  • Method of controlling fungi using phthalazine compounds
    Patent number: 4139622
    Abstract: 1-halo- and 1-lower alkoxy-4-trichloromethylphthalazines are disclosed as fungicides and as novel compositions of matter.
    Type: Grant
    Filed: October 20, 1977
    Date of Patent: February 13, 1979
    Assignee: Olin Corporation
    Inventors: Eugene F. Rothgery, Hansjuergen A. Schroeder
  • Process for producing pentachloronitrobenzene
    Patent number: 4138438
    Abstract: An improvement is disclosed in the preparation of pentachloronitrobenzene by the reaction of pentachlorobenzene with mixed nitration acid. The improvement, which is aimed at reducing undesirable impurities in the product, includes the use of a selected process step, wherein excess, unreacted nitric acid is reacted with HCl.
    Type: Grant
    Filed: August 22, 1977
    Date of Patent: February 6, 1979
    Assignee: Olin Corporation
    Inventor: Walter A. Gay
  • Leak-testing method for diaphragm-type electrolytic cells
    Patent number: 4137752
    Abstract: A method for leak-testing synthetic separators for interleaved planar electrodes is described. The method includes installing the separator such as a diaphragm or membrane about the electrodes to create an enclosed chamber within the separator, supporting the electrodes from a supportive cell housing, pressurizing the created chamber to a predetermined pressure with a gas, slowly filling the housing with a liquid to a level above the separator and observing the separator during the filling operation to determine if leaks are present in the separator.
    Type: Grant
    Filed: August 22, 1977
    Date of Patent: February 6, 1979
    Assignee: Olin Corporation
    Inventors: William D. Mitchell, John O. Adams, John J. Simmons
  • Process for toluene diamine recovery
    Patent number: 4137266
    Abstract: Toluene diamine is obtained by hydrolyzing the toluene diisocyanate distillation residue in the presence of aqueous ammonia.
    Type: Grant
    Filed: September 15, 1977
    Date of Patent: January 30, 1979
    Assignee: Olin Corporation
    Inventor: John R. Cassata
  • Reduction of scorching in polyurethane foam
    Patent number: 4135042
    Abstract: Use of phosphites as scorch inhibitors in polyurethane foams containing halogenated phosphate polyester additives.
    Type: Grant
    Filed: October 18, 1977
    Date of Patent: January 16, 1979
    Assignee: Olin Corporation
    Inventors: Donald L. Lickei, Clifford J. Maxwell
  • Method and apparatus for making foam
    Patent number: 4134945
    Abstract: An improvement in the manufacture of flexible densified polyurethane foam wherein the partially cured freely risen foam is fed through a crush conveyor to minimize the density gradient throughout the vertical cross section. The crush conveyor includes an upper crushing section which is arcuate and has a radius of a dimension such that the ratio of the radius of the arc to height of the partially cured freely risen foam is 1.1 to 1 or greater. The crush conveyor has a bottom crushing section which may be arcurate with a radius of a dimension such that the ratio of its radius to the height of the partially cured freely risen foam is also 1.1 to 1 or greater. The radius of the bottom arcuate crushing section may be the same or larger than the radius of the top arc. As an alternative, the bottom crushing section may be planar and may be horizontal, or inclined with respect to the horizontal.
    Type: Grant
    Filed: November 2, 1976
    Date of Patent: January 16, 1979
    Assignee: Olin Corporation
    Inventors: Alan H. Milford, Oliver J. Proulx
  • Functional fluid method using alkoxysilane multiple cluster compounds
    Patent number: 4132664
    Abstract: Methods are described wherein a functional fluid is used as a medium for the transmission of pressure or heat. The functional fluid used is a composition containing an effective amount of an alkoxysilane multiple cluster compound.
    Type: Grant
    Filed: May 20, 1977
    Date of Patent: January 2, 1979
    Assignee: Olin Corporation
    Inventor: Karl O. Knollmueller
  • Generation of polyurethane foam
    Patent number: 4125138
    Abstract: An improvement in the generation of foam from a mixture of foam-forming material in a structure having a preferred configuration. Conveying means are used to convey the structure along a horizontal path. A plurality of foam gun heads are mounted in spaced relationship to each other over and transverse to said horizontal path. Each foam gun head includes a foam dispensing outlet and valve means for controlling the discharges of the foam-forming materials therefrom. First, sensing means are provided upstream of the foam dispensing outlets for sensing the passage of the structure thereby. A plurality of second sensing means are positioned upstream of the foam dispensing outlets in spaced relationship to each other in a direction transverse to the horizontal path, each one of the second sensing means being associated with one foam gun head for sensing the presence of the structure in a vertical direction.
    Type: Grant
    Filed: June 13, 1977
    Date of Patent: November 14, 1978
    Assignee: Olin Corporation
    Inventors: Gerald V. Dever, Jr., Louis R. Chiocchio
  • Poly (oxyalkylene) glycol based polyurethane with improved paint adhesion properties
    Patent number: 4124574
    Abstract: Flexible polyurethane elastomers suitable for use as automotive exterior body parts are disclosed. The elastomers which are produced from select polymeric diols having a polyoxypropylene block capped with a random poly (oxyethylene-oxypropylene) structure, feature enhanced paint adhesion properties.
    Type: Grant
    Filed: August 29, 1977
    Date of Patent: November 7, 1978
    Assignee: Olin Corporation
    Inventors: Frank J. Preston, David R. MacFarland