Patents Assigned to Olin
  • In situ reduction of electrode overvoltage
    Patent number: 4160704
    Abstract: A method and apparatus for in situ reduction of cathode overvoltage in electrolytic cells. The method involves introducing low overvoltage or noble metal ions into the catholyte solution and plating those ions on the cathode in situ. The apparatus includes a low overvoltage or noble metal ion generating device for introducing low overvoltage or noble metal ions into the cathode solution so as to plate them in situ on the cathode during or prior to cell operation.
    Type: Grant
    Filed: November 21, 1977
    Date of Patent: July 10, 1979
    Assignee: Olin Corporation
    Inventors: Han C. Kuo, Byung K. Ahn, Ronald L. Dotson, Kenneth E. Woodard, Jr.
  • Lubrication in DC casting of copper base alloys
    Patent number: 4160474
    Abstract: Improvements in the direct chill casting of copper base alloys such as the tin brasses, tin bronzes and those alloys which exhibit a liquidus-solidus temperature separation of at least 50.degree. C. is brought about by utilizing boron nitride particles in the dressing material for the mold walls. These boron nitride particles may also be added to normally used molten metal covering material and utilized as a cover for said alloys in the casting process. The most effective results in casting are obtained when using the boron nitride particles in mold dressing form in conjunction with molten cover form.
    Type: Grant
    Filed: December 20, 1977
    Date of Patent: July 10, 1979
    Assignee: Olin Corporation
    Inventors: Michael J. Pryor, Derek E. Tyler
  • Alkoxy-bis (trialkoxysiloxy)-silane surfactants
    Patent number: 4160776
    Abstract: Novel surface active agents are disclosed having the formula: ##STR1## wherein R is hydrogen, an alkyl, alkenyl, aryl or aralkyl group; each R' is independently selected from the same group as R with the proviso that at least a majority of R' radicals attached to each Si atom are sterically hindered alkyl groups having at least 3 carbon atoms; R" is alkyl or alkenyl of 1-20 carbons; R'" is hydrogen or methyl; and n is an integer of from about 5 to about 50.
    Type: Grant
    Filed: June 29, 1978
    Date of Patent: July 10, 1979
    Assignee: Olin Corporation
    Inventors: Michael Scardera, David F. Gavin
  • Process for producing a purified 3,4-toluenediamine product and a mixture of 4- and 5-methylbenzotriazoles from a mixture of ortho-toluenediamine isomers
    Patent number: 4158660
    Abstract: A process for producing a purified 3,4-toluenediamine product and a mixture of 4- and 5-methylbenzotriazoles from a mixture of ortho-toluenediamine isomers, the process having the steps of(a) dissolving a mixture of ortho-toluenediamine isomers in water to form an aqueous solution;(b) cooling the aqueous solution to a temperature whereby crystals of a purified 3,4-toluenediamine product are formed in an aqueous mother liquor;(c) separating the purified 3,4-toluenediamine product crystals from the aqueous mother liquor;(d) reacting the aqueous mother liquor with a diazotization agent selected from sodium nitrite, potassium nitrite, nitrous acid and nitrous anhydride in the presence of acetic acid to form a reaction mixture containing a mixture of 4- and 5-methylbenzotriazoles; and(e) recovering the mixture of 4- and 5-methylbenzotriazoles from the reaction mixture.
    Type: Grant
    Filed: February 24, 1978
    Date of Patent: June 19, 1979
    Assignee: Olin Corporation
    Inventors: David F. Gavin, Alan E. Ardis, Lawrence E. Katz, John D. Schellberg
  • Electromagnetic casting method and apparatus
    Patent number: 4158379
    Abstract: A method and apparatus for electromagnetic continuous or semicontinuous casting of metals and alloys. A coolant application system may be adjustably positioned to control the solidification front at the surface of the casting without otherwise influencing the containment process through modification of the magnetic field.
    Type: Grant
    Filed: July 3, 1978
    Date of Patent: June 19, 1979
    Assignee: Olin Corporation
    Inventors: John C. Yarwood, Ik Y. Yun, Derek E. Tyler
  • Generation of polyurethane foam
    Patent number: 4158535
    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 25, 1977
    Date of Patent: June 19, 1979
    Assignee: Olin Corporation
    Inventor: Gerald V. Dever, Jr.
  • Catalytic epoxidation of alkylene compounds
    Patent number: 4157346
    Abstract: An epoxidation method is described wherein an alkylene compound is reacted with a peroxidic compound, e.g., H.sub.2 O.sub.2, in the presence of an improved molybdenum catalyst which is prepared by a selective reaction involving an oxygen-containing molybdenum compound, an amine, and an alkylene glycol.
    Type: Grant
    Filed: March 30, 1978
    Date of Patent: June 5, 1979
    Assignee: Olin Corporation
    Inventors: Ellwood L. Lines, Robert J. Fairbrother, John A. Herbst
  • Aqueous oxidizing bath composition for vat and sulfur dyes and a process for treating reduced dyes therewith
    Patent number: 4155709
    Abstract: A novel composition is described which is an aqueous oxidizing solution containing: (a) about 0.01 to about 10% by weight of an oxidant selected from the water-soluble iodate salts and the water-soluble bromate salts; (b) about 0.005% to about 5% by weight of a water-soluble vanadate salt; and (c) about 0.05 to about 10% of a water-soluble nitrate salt. An improved process for oxidizing vat or sulfur dyes is also described wherein the reduced form of the dye is oxidized by contact with the novel composition.
    Type: Grant
    Filed: July 24, 1978
    Date of Patent: May 22, 1979
    Assignee: Olin Corporation
    Inventor: Richard L. Doerr
  • Apparatus for regulating anode-cathode spacing in an electrolytic cell
    Patent number: 4155829
    Abstract: An improved method and apparatus for adjusting the space between an adjustable anode and a cathode in an electrolytic cell wherein current measurements and voltage measurements are obtained for conductors to the anode sets and compared with predetermined standards for the same conductors and anode sets. Measurement of deviation from the predetermined standards are used to determine the direction of anode adjustment. A digital computer operably connected to motor drive means adapted to raise or lower anode sets upon appropriate electric signals from the computer is a preferred embodiment of this invention.
    Type: Grant
    Filed: June 27, 1978
    Date of Patent: May 22, 1979
    Assignee: Olin Corporation
    Inventor: Richard W. Ralston, Jr.
  • Graft copolymers from unsaturated monomers and peroxy di-ester polyols and polyurethanes prepared therefrom
    Patent number: 4153643
    Abstract: Graft copolymers are prepared by the polymerization of an ethylenically unsaturated monomer, or a mixture of such monomers, in the presence of a peroxy di-ester polyol. Presence of the peroxy group in the polyol reactant itself serves as a free radical initiator site for the graft copolymerization reaction. The copolymers formed are utilized in the formulation of polyurethane compositions.
    Type: Grant
    Filed: October 18, 1977
    Date of Patent: May 8, 1979
    Assignee: Olin Corporation
    Inventors: Frank J. Preston, Theodore C. Kraus, Kiran B. Chandalia
  • Pole extension for powder-actuated tool
    Patent number: 4153193
    Abstract: A pole extension device for use with a powder-actuated tool. A cam-equipped handle is twistably mounted on the end of a hollow elongate body. An inelastic cable is disposed within the body engaging the tool firing mechanism and attached to a pin riding on the cam, such that twisting of the handle, relative to the body, results in discharge of the tool.
    Type: Grant
    Filed: April 26, 1978
    Date of Patent: May 8, 1979
    Assignee: Olin Corporation
    Inventor: Edward J. Urbanowicz
  • 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
  • Electrolytic cell having membrane enclosed anodes
    Patent number: 4152225
    Abstract: A membrane cell for the electrolysis of aqueous salt solutions is provided in which the foraminous metal anode is enclosed in the membrane. Spacing means are provided to separate the portions coated with an electrocatalytically active material from the membrane. The spacing means may be a nonconducting material or the coated surface of the anode may be faced away from the membrane to permit the anode structure to serve as the spacing means. To provide a low cell voltage and permit efficient hydrogen gas release from the caustic solution, the cathode is spaced apart from the membrane.
    Type: Grant
    Filed: July 24, 1978
    Date of Patent: May 1, 1979
    Assignee: Olin Corporation
    Inventors: Kenneth E. Woodard, Jr., Steven J. Specht
  • 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
  • Insulation fastening assembly
    Patent number: 4150465
    Abstract: An assembly for fastening an insulation batt to a supporting surface. The fastening assembly includes an elongated fastener which is driven into the supporting surface with the head end of the fastener protruding from the supporting surface a distance approximately equal to the thickness of the batt of insulation. The batt is then impaled upon the protruding fastener and pushed down thereon until the head of the fastener protrudes from the surface of the batt remote from the supporting surface. A planar locking clip having a keyhole-shaped opening is then slipped over the fastener head and wedged between the fastener head and the batt. The locking clip is held in place by engagement with the fastener head, and prevents the insulation batt from pulling away from the supporting surface.
    Type: Grant
    Filed: December 22, 1977
    Date of Patent: April 24, 1979
    Assignee: Olin Corporation
    Inventor: Edmond P. Gavin, Jr.
  • Decomposition inhibitors for chloroisocyanurates
    Patent number: 4149988
    Abstract: Decomposition of chloroisocyanurates such as trichloroisocyanuric acid or alkali metal dichloroisocyanurates is inhibited by the presence of alkaline earth metal sulfates. The sulfates may be used in compositions with a solid chloroisocyanurate or they may be added separately, for example, to packages containing the chloroisocyanurate.
    Type: Grant
    Filed: May 26, 1977
    Date of Patent: April 17, 1979
    Assignee: Olin Corporation
    Inventors: James P. Brennan, John M. Casberg, Clair H. Putnam
  • Glass or ceramic-to-metal composites or seals involving iron base alloys
    Patent number: 4149910
    Abstract: Glass or ceramic-to-metal composites or seals wherein the glass or ceramic is bonded to an iron base alloy consisting essentially of from 1-5% silicon and from 1-10% chromium, remainder iron. The alloy develops a thermal oxide film which consists essentially of chromium oxide and .alpha.Fe.sub.2 O.sub.3 which may comprise from 10 to 100% of the oxide film thickness on the metal. The invention also includes a process of bonding the glass or ceramic to the metal which eliminates the need of a prolonged heat treatment performed in a special atmosphere.
    Type: Grant
    Filed: May 27, 1975
    Date of Patent: April 17, 1979
    Assignee: Olin Corporation
    Inventor: James M. Popplewell
  • Recovery of mercury and caustic values from caustic sludges
    Patent number: 4149879
    Abstract: Mercury and caustic values are recovered from caustic sludges in a process which comprises intermixing the caustic sludge with a liquid under pressure or agitation to produce a caustic slurry which is separated into a caustic liquor, metallic mercury and a remaining sludge which is suitable for roasting in a retort to recover better than 99 percent of the mercury in the sludge.The process recovers valuable mercury and caustic materials and eliminates pollution of natural resources which was formerly caused when these sludges were disposed of in landfill operations. In addition, the process reduces potential hazards to personnel handling the caustic sludges and requires no addition of chemicals which produce undesirable by-products and add to the cost of the recovery process.
    Type: Grant
    Filed: March 30, 1977
    Date of Patent: April 17, 1979
    Assignee: Olin Corporation
    Inventor: Wing M. Loo
  • Mixed propellant charge
    Patent number: RE30002
    Abstract: A propellant charge comprising a matrix of granular propellant having interspersed therethrough compacted molded bodies of propellant. The density of the granular propellant is less than the density of the molded propellant bodies. The use of the mixed propellant charge enables a cartridge case of given dimensions to be loaded with a greater weight of propellant thereby enabling the achievement of greater projectile velocities in any given gun-ammunition system.
    Type: Grant
    Filed: July 28, 1977
    Date of Patent: May 22, 1979
    Assignee: Olin Corporation
    Inventors: James K. Dooley, Ralph L. Cook