Patents Assigned to Olin
  • Ozonolysis of hydrogenated latices
    Patent number: 5039737
    Abstract: The subject invention relates to a process for treating an emulsion of a crosslinked elastomeric polymer containing residual hydrazine to obtain a latex of soluble elastomeric polymer having a reduced concentration of residual hydrazine therein, said process comprising the addition of ozone to said emulsion in an amount and under conditions which are sufficient for the ozone to react with the crosslinked elastomeric polymer and the residual hydrazine to produce a latex of soluble elastomeric polymer having a reduced level of residual hydrazine therein. The process of the present invention also improves the color of latex by removing color-bodies, such as benzoquinone, which may be present in the original latex.
    Type: Grant
    Filed: February 22, 1990
    Date of Patent: August 13, 1991
    Assignee: The Goodyear Tire & Rubber Company/Olin Corp.
    Inventors: Dane K. Parker, James R. Purdon, Jr.
  • Copper alloys having improved softening resistance and a method of manufacture thereof
    Patent number: 5039478
    Abstract: A method for the manufacture of copper base alloys having improved resistance to thermally induced softening is provided. The alloy composition is selected so that the alloy undergoes either a peritectic or eutectic transformation during cooling. The solidification rate is controlled so that the second phase forms as a uniform dispersion of a relatively small dispersoid. The dispersoid inhibits recrystallization resulting in an alloy less susceptible to softening at elevated temperatures.
    Type: Grant
    Filed: October 22, 1990
    Date of Patent: August 13, 1991
    Assignee: Olin Corporation
    Inventor: Ashok Sankaranarayanan
  • Process for the production of 1,2,4-triazol-5-one
    Patent number: 5039816
    Abstract: A process for producing chloride ion-free 1,2,4-triazol-5-one which comprises: a) heating a mixture of hydrazodicarbonamide and formic acid to a reflux temperature for said mixture, b) refluxing said mixture at said reflux temperature for a time sufficient to cause said mixture to change its visual appearance from a cloudy mixture to a clear solution, and c) removing unreacted formic acid from said clear solution to provide the desired 1,2,4-triazol-5-one product free of chloride ion.
    Type: Grant
    Filed: August 27, 1990
    Date of Patent: August 13, 1991
    Assignee: Olin Corporation
    Inventor: Eugene F. Rothgery
  • Hypochlorous acid process
    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
  • Ultrapure hydrazine production
    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
  • Method and kit for separating double-stranded nucleic acid from a single-stranded/double-stranded mixture of nucleic acids
    Patent number: 5034314
    Abstract: A method and a kit for separating double-stranded nucleic acid molecules from a mixture containing both single-stranded and double-stranded nucleic acid molecules. The method is particularly suitable for separating hybridized from unhybridized probe nucleic acid.
    Type: Grant
    Filed: December 22, 1986
    Date of Patent: July 23, 1991
    Assignee: Olin Corporation
    Inventors: Jon R. Geiger, Samuel I. Trotz
  • Removal of thiosulfate from hydrosulfite solutions
    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
  • Stratified propellant charge barriers for small and medium caliber ammunition
    Patent number: 5031541
    Abstract: An ammunition cartridge comprises a tubular case having a head end and an open mount end, at least two propellant charges contained within said case, and a hermetic barrier means installed between the charges for separating the charges from one another and preventing premature crossflow of gases. One embodiment of the barrier means comprises a formed-in-place solid layer of polymeric resin material. This layer is formed in place on top of a first propellant charge, conforms to the surface contour of the first charge and extends radially across the charge to the tubular case.Another preferred barrier means comprises a collapsible flexible polymeric disk extending radially across the case between the charges. This disk has a diameter at least equal to that of the inside of said case and a tubular outer rim operably engaged with said tubular case to provide a circumferential seal between the charges.
    Type: Grant
    Filed: July 16, 1990
    Date of Patent: July 16, 1991
    Assignee: Olin Corporation
    Inventors: Robert J. Gardner, David E. Merrill
  • Semiconductor bridge (SCB) packaging system
    Patent number: 5029529
    Abstract: The present invention is direct to primer housings to secure a semiconductor bridge device in close proximity to an energetic charge. The primer housings are formed from an electrically conductive alloy and contain a dielectric medium disposed between components to maintain electrical isolation. The housings are characterized by high ductility to resist fracture during assembly or handling. In certain embodiments, one or both lead wires are removed to reduce the potential for lead wire breakage or separation.
    Type: Grant
    Filed: September 25, 1989
    Date of Patent: July 9, 1991
    Assignee: Olin Corporation
    Inventors: Frank N. Mandigo, George C. Mei, Julius C. Fister
  • Anionic polycarboxylated surfactants as dye-leveling agents used in combination with a stainblocker for fibers
    Patent number: 5030245
    Abstract: The present invention relates to a process for providing dye leveling and stainblocking characteristics to fibers. The use of specified dye-leveling agents in accordance with the present invention allows the treated fibers to be contacted with an acid dye-stainblocker composition in a single step. The invention is particularly suitable for treating nylon, silk and wool fibers.
    Type: Grant
    Filed: September 7, 1989
    Date of Patent: July 9, 1991
    Assignee: Olin Corporation
    Inventors: Thomas C. Hemling, Harry Stitzel
  • Composite coating for electrical connectors
    Patent number: 5028492
    Abstract: A composite coating for electrical connectors is provided. The coating contains a ductile metal matrix and an uniformly dispersed polymer component. The polymer component is present in a concentration effective to reduce frictional forces generated when inserting an insertion component into a socket. The composite coating has lower friction and improved fretting corrosion resistance as compared to an electrodeposited tin coating. One preferred coating contains 0.5 weight percent polytetrafluoroethylene in a tin matrix.
    Type: Grant
    Filed: March 13, 1990
    Date of Patent: July 2, 1991
    Assignee: Olin Corporation
    Inventor: Bruce M. Guenin
  • Process for the production of lithium hypochlorite
    Patent number: 5028408
    Abstract: A process for producing lithium hypochlorite comprises admixing an aqueous hypochlorous acid solution having a concentration of 35 percent of 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. C. to produce a solution of lithium hypochlorite. The solution is concentrated by evaporation at temperatures in the range of from about 30.degree. to about 60.degree. C. and at subatmospheric pressures to form a paste of lithium hypochlorite. After separating the paste into a cake of lithium hypochlorite and a mother liquor, a potassium compound is admixed with the mother liquor. The process produces a highly pure solid lithium hypochlorite product having a concentration of at least 80 percent available chlorine.
    Type: Grant
    Filed: March 2, 1990
    Date of Patent: July 2, 1991
    Assignee: Olin Corporation
    Inventors: Budd L. Duncan, Larry D. Carpenter, Leslie R. Osborne
  • Electric primer with reduced RF and ESD hazard
    Patent number: 5027707
    Abstract: An electric primer using an intrinsic conductive pyrotechnic mixture is improved by the addition of a carbon layer between the inner and outer electrodes and the mixture. The carbon layer provides a parallel resistive current path between the electrodes in addition to the path through the conductive mixture. The addition of a carbon layer also increases the operable temperature range of the primer. The high energy firing threshold of the intrinsically conductive pyrotechnic mixture and the additional dissipative current path through the carbon layer coact to further reduce the sensitivity of the primer to RF radiation and ESD hazards.
    Type: Grant
    Filed: May 8, 1989
    Date of Patent: July 2, 1991
    Assignee: Olin Corporation
    Inventor: George C. Mei
  • Grain refinement of a copper base alloy
    Patent number: 5026433
    Abstract: A method of producing a grain refined copper base alloy containing iron in the amount of less than 2.3% by weight and which is cast into an ingot by conventional direct chill casting. Calcium is added to the melt before casting, preferably in the form of a copper-clad or iron-clad calcium feedwire.
    Type: Grant
    Filed: January 2, 1990
    Date of Patent: June 25, 1991
    Assignee: Olin Corporation
    Inventors: Richard P. Vierod, Harvey P. Cheskis, Derek E. Tyler
  • Polymer composition containing pendant organic charge transfer salt moieties useful in switching devices
    Patent number: 5026774
    Abstract: This invention pertains to optical and electrical switching devices and to novel polymers containing pendant organic charge transfer moieties and useful in the fabrication of the switching devices.
    Type: Grant
    Filed: September 22, 1988
    Date of Patent: June 25, 1991
    Assignee: Olin Corporation
    Inventors: Roger W. Day, Michael J. Morgan
  • Multi-layer lead frames for integrated circuit packages
    Patent number: 5025114
    Abstract: A composite leadframe is provided. The leadframe comprises a rigid metal portion electrically interconnected to a flexible multi-layer portion. When sealed within an electronic package, the composite leadframe provides a higher lead density than achieved by rigid metal leadframes and better electrical and mechanical properties than achieved with flexible leads. The package may comprise a discrete base and cover component with the leadframe disposed between or a monolithic block of plastic encapsulating the electronic device and a portion of the leadframe.
    Type: Grant
    Filed: October 30, 1989
    Date of Patent: June 18, 1991
    Assignee: Olin Corporation
    Inventor: Jeffrey S. Braden
  • Electronic packaging of components incorporating a ceramic-glass-metal composite
    Patent number: 5024883
    Abstract: The present invention is directed to components and the process of forming the components for housing semiconductor devices. The components are formed of a unique ceramic-glass-metal composite material comprising ceramic particles, metallic particles and a glass matrix with said ceramic and metallic particles dispersed throughout. Metal elements can be embedded into the material to enable simplified fabrication of devices such as semiconductor packaging.
    Type: Grant
    Filed: September 14, 1989
    Date of Patent: June 18, 1991
    Assignee: Olin Corporation
    Inventors: Narendra N. SinghDeo, Deepak Mahulikar, Sheldon H. Butt
  • Anti-microbial composition containing aliphatic polygycidol adducts
    Patent number: 5023008
    Abstract: Novel nonionic antimicrobial amine glycidol compounds which may be used in cleaning compositions with anionics, nonionics or cationic surfactants as cleaning agents or a preservative in water-based functional fluids or surface coating compositions are represented by the formula: ##STR1## wherein R represents an alkyl group having from about 8 to about 18 carbon atoms and mixtures thereof,Y represents H, ##STR2## or R', and mixtures thereof; R' represents an alkyl group, the sum total of carbon atoms in R+R' being from about 8 to about 18;n is from about 1 to about 6; andm+n are from about 2 to about 12;wherein the molar ratio of amine glycidol compound to surfactant is from about 10:1 to about 1:10.
    Type: Grant
    Filed: November 17, 1989
    Date of Patent: June 11, 1991
    Assignee: Olin Corporation
    Inventors: Michael Scardera, Frank R. Grosser
  • Aluminum alloy semiconductor packages
    Patent number: 5023398
    Abstract: The present invention relates to a package adapted to house an electronic device, such as a semiconductor integrated circuit. The package components are comprised of aluminum based alloy. At least a portion of the surfaces of the package components are anodized to enhance corrosion resistance and increase bond strength. The aluminum based packages are characterized by lighter weight than copper based packages and better thermal conductivity than plastic based packages.
    Type: Grant
    Filed: April 4, 1990
    Date of Patent: June 11, 1991
    Assignee: Olin Corporation
    Inventors: Deepak Mahulikar, James M. Popplewell
  • Method and composition for depositing a chromium-zinc anti-tarnish coating on copper foil
    Patent number: 5022968
    Abstract: A technique for improving the tarnish and oxidation resistance of copper and copper based alloy materials is disclosed. Copper or a copper alloy is immersed in an aqueous solution containing sodium hydroxide, zinc ions and chromium (VI) ions. While the compositional ranges may vary, the concentration of either zinc ions or chromium (VI) ions, or both, is less than 1.0 gm/l. A chromium-zinc coating is electrolytically applied. The coating provides tarnish resistance at temperatures in excess of 190.degree. C. The coating is removable by immersion in sulfuric acid. Improved results are obtained by rinsing deionized water containing a small amount of an alkaline or alkaline earth hydroxide.
    Type: Grant
    Filed: September 20, 1990
    Date of Patent: June 11, 1991
    Assignee: Olin Corporation
    Inventors: Lifun Lin, Chung-Yao Chao