Patents Assigned to Olin
  • Controlled operation of high current density oxygen consuming cathode cells to prevent hydrogen formation
    Patent number: 4919791
    Abstract: A process for the electrolysis of an alkali metal halide brine is operated in an electrolytic cell having an anode compartment containing at least one anode, a cathode compartment containing at least one cathode, and a cation exchange membrane separating the anode compartment from the cathode compartment.
    Type: Grant
    Filed: October 9, 1985
    Date of Patent: April 24, 1990
    Assignee: Olin Corporation
    Inventors: Ronald C. Miles, David D. Justice, Kenneth E. Woodard, Jr.
  • Non-preheated low thermal conductivity substrate for use in spray-deposited strip production
    Patent number: 4917170
    Abstract: A molten metal gas-atomizing spray-depositing apparatus has an atomizer which employs a pressurized gas flow for atomizing a stream of molten metal into a spray pattern of semi-solid metal particles. The apparatus also has a movable non-preheated substrate composed of a material having a predetermined thermal conductivity of about one or less (W/M-K) being disposed below the atomizeer. The substrate receives thereon a deposit of the particles in the spray pattern. The pressurized gas flow also impinges thereon for cooling the deposit on the substrate to form a product thereon. The predetermined thermal conductivity of the substrate of one or less precludes extraction of heat by the substrate from, and thus solidification of, the deposit upon initial contact with the substrate whereby a reduction of porosity is achieved in the deposit.
    Type: Grant
    Filed: September 20, 1988
    Date of Patent: April 17, 1990
    Assignee: Olin Corporation
    Inventors: Ashok Sankaranarayanan, W. Gary Watson, Harvey P. Cheskis
  • Process for the production of dinitrotoluene using an inorganic salt as a phase separation agent
    Patent number: 4918250
    Abstract: This invention relates to a process for nitrating toluene to dinitrotoluene and phase separation of the product using an inorganic salt as a phase separation agent.
    Type: Grant
    Filed: April 21, 1989
    Date of Patent: April 17, 1990
    Assignee: Olin Corporation
    Inventors: Robert W. Mason, Peter C. Imm, Kent J. Bordelon
  • Nitramine-containing homopolymers and co-polymers and a process for the preparation thereof
    Patent number: 4916206
    Abstract: Energetic binders, and, more specifically, a class of nitramine-containing homopolymers and co-polymers characterized by favorable viscosity and glass transition temperature are prepared.
    Type: Grant
    Filed: November 14, 1988
    Date of Patent: April 10, 1990
    Assignee: Olin Corporation
    Inventors: Roger W. Day, Rahim Hani
  • Chlorine bleach compositions with reduced fabric dye attack
    Patent number: 4909956
    Abstract: Chlorine bleaching granules for colored fabrics which minimize fabric dye attach and fabric damage.This is accomplished in a bleaching granule for preventing dye attack of fabrics during bleaching, the granule comprising an alkali metal chloroisocyanurate, a buffering agent, and a mitigating agent, where the active alkalinity of the granule is from about 0 to about -9.
    Type: Grant
    Filed: September 9, 1988
    Date of Patent: March 20, 1990
    Assignee: Olin Corporation
    Inventor: Ralph S. Webber
  • Lifetime arcjet thruster
    Patent number: 4907407
    Abstract: An arcjet thruster has an anode body forming a constrictor and a nozzle which define an arc chamber. The thruster also has a cathode in the form of a rod having a tip and being spaced upstream from the constrictor. The thruster employs several features which reduce anode and cathode erosion and increase the operational life of the thruster. One set of features relate to the employment of cathode and anode shaping. Another feature relates to the use of a propellant injector having a series of radially and tangentially arranged passages for providing direct injection of propellant gas into the arc chamber and enhanced convective cooling of the anode.
    Type: Grant
    Filed: February 10, 1988
    Date of Patent: March 13, 1990
    Assignee: Olin Corporation
    Inventors: Mark A. Simon, Steve Knowles, William Smith
  • Asymmetrical gas-atomizing device and method for reducing deposite bottom surface porosity
    Patent number: 4907639
    Abstract: A molten metal gas-atomizing spray-depositing apparatus employs an asymmetrical gas-atomizing device for generating one-sided shear forces for breaking-up and atomizing a stream of molten metal into metal particles in a divergent spray pattern of higher mass density at an upstream leading peripheral portion of the spray pattern, relative to the direction of movement of a substrate, than either of a center region or downstream trailing peripheral region of the pattern.
    Type: Grant
    Filed: March 13, 1989
    Date of Patent: March 13, 1990
    Assignee: Olin Corporation
    Inventors: Sankaranarayanan Ashok, Thomas J. Melillo
  • Color-self-developing, microcapsular toner particles
    Patent number: 4908301
    Abstract: This, invention relates to electrostatic imaging systems, and, more particularly, color-self-developing toner particles and processes for the fabrication and use thereof. A blend of these toner particles is useful in multicolor electrostatic imaging using a single dry or liquid toner bath. Potential applications include full-color xerographic copying, full-color printing, full-color computer-generated imaging, and the like.
    Type: Grant
    Filed: February 10, 1989
    Date of Patent: March 13, 1990
    Assignee: Olin Corporation
    Inventors: Paul V. Grosso, Michael J. Morgan, Feagin A. Wing, Jr., Williard F. Burt
  • Electromagnetic solder tinning method
    Patent number: 4904497
    Abstract: The present invention relates to an electromagnetic system for applying a coating to a metal or metal alloy substrate. The system utilizes a high frequency electromagnetic field to maintain a supply of coating material in a molten condition, to restrict the flow of the molten coating material, and to control the thickness of the applied coating layer. Downstream cooling solidifies the coating layer. The system has particular utility in forming tin coated copper or copper base alloy products.
    Type: Grant
    Filed: January 4, 1988
    Date of Patent: February 27, 1990
    Assignee: Olin Corporation
    Inventor: Brian G. Lewis
  • Synthetic resin composition and its method of use
    Patent number: 4904714
    Abstract: Tetraalkylpiperidinyl substituted uracil derivatives are disclosed which can be represented by the formula ##STR1## wherein each R' is independently an alkyl radical, n is 1 or 2 and R is a substituted or unsubstituted aliphatic radical, cycloaliphatic radical, aromatic radical or aromatic-aliphatic radical.These derivatives are useful as UV light stabilizers in synthetic resins.
    Type: Grant
    Filed: December 5, 1988
    Date of Patent: February 27, 1990
    Assignee: Olin Corporation
    Inventors: Robert J. Raynor, Francis W. Migliaro, Jr.
  • Interdiffusion resistant Fe-Ni alloys having improved glass sealing property
    Patent number: 4905074
    Abstract: The present invention relates to an iron-nickel alloy containing from about 30% to about 60% nickel, from 0.001% to about 0.15% nitrogen, at least one element selected from the group consisting of from about 1% to about 10% molybdenum and from about 0.001% to about 2% aluminum and the balance essentially iron. The alloys demonstrate improved resistance to intermediate compound formation, improved glass to metal sealing properties, and improved wirebonding performance. The alloys of the present invention have particular utility as a lead frame material for semiconductor packages.
    Type: Grant
    Filed: November 24, 1986
    Date of Patent: February 27, 1990
    Assignee: Olin Corporation
    Inventors: Chung-Yao Chao, John F. Breedis
  • Gas atomizer for spray casting
    Patent number: 4901784
    Abstract: A gas-atomizing system for spray casting a spray of molten metal on a moving substrate in which the gas atomizing device is in the form of an annulus having a central opening therethrough through which the molten metal to be atomized flows. The annulus is provided with a plenum chamber which communicates with elongated openings on the bottom surface of the annulus. The manifold and outlets are so arranged that a divergent conical spray pattern is produced having a central axis inclined with respect to the vertical axis of the molten metal stream in a direction downstream of the moving substrate upon which the spray material is deposited.
    Type: Grant
    Filed: March 29, 1989
    Date of Patent: February 20, 1990
    Assignee: Olin Corporation
    Inventors: Sankaranarayanan Ashok, Harvey P. Cheskis
  • Photoresist compositions containing selected 6-acetoxy cyclohexadienone photosensitizers and novolak resins
    Patent number: 4902603
    Abstract: A light-sensitive mixture useful as a negative-working photoresist composition comprising:(a) at least one novolak resin; and(b) at least one 6-acetoxy cyclohexadienone compound of the formula (I) below: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 are individually selected from hydrogen and lower alkyl groups having from 1 to 4 carbon atoms with the proviso that at least three of the R.sub.1 to R.sub.5 groups are lower alkyl groups.
    Type: Grant
    Filed: October 5, 1987
    Date of Patent: February 20, 1990
    Assignee: Olin Corporation
    Inventors: Sydney G. Slater, Stanley A. Ficner
  • Process for preparing the through hole walls of a printed wiring board for electroplating
    Patent number: 4897164
    Abstract: In the process for electroplating the walls of through holes in a laminated printed wiring board comprised of at least one non-conducting layer laminated to at least two separate conductive metal layers, which comprises the steps:(a) contacting said printed wiring board having said through holes with a liquid dispersion of carbon blaock comprised of:(1) carbon black particles having an average particle size of less than about 3.
    Type: Grant
    Filed: April 24, 1989
    Date of Patent: January 30, 1990
    Assignee: Olin Hunt Specialty Products Inc.
    Inventors: Anthony M. Piano, Randolfo Galvez
  • Metal electronic package
    Patent number: 4897508
    Abstract: A metal package for housing an electronic device wherein the electronic device is attached to a severable die attach pad. The die attach pad is bonded to the base of the package with a thermally conductive medium. The base is bonded to the die attach pad and to the leadframe at the same time to reduce the thermal degradation of the sealants. In other embodiments, apertures are provided in the base component to enhance cooling of the electronic device and in the cover component to vent reaction by-products.
    Type: Grant
    Filed: February 10, 1988
    Date of Patent: January 30, 1990
    Assignee: Olin Corporation
    Inventors: Deepak Mahulikar, Sheldon H. Butt, Jacob Crane, Anthony M. Pasqualoni, Edward F. Smith
  • Etchant solution for photoresist-patterned metal layers
    Patent number: 4895617
    Abstract: An etchant solution comprised of water and:(a) about 65% to 75% by weight phosphoric acid;(b) about 1% to 5% by weight nitric acid;(c) about 0% to 15% by weight acetic acid; and(d) about 0.005% to about 5% of an amine oxide surfactant having the formula (I): ##STR1## wherein R.sub.1 and R.sub.2 are each independently selected from the group consisting of lower alkyl group having 1-4 carbon atoms and lower alkoxy groups having 1-4 carbon atoms and R.sub.3 is a higher alkyl group having 8 to 18 carbon atoms or a mixture thereof.
    Type: Grant
    Filed: May 4, 1989
    Date of Patent: January 23, 1990
    Assignee: Olin Corporation
    Inventors: Thomas S. Roche, Maureen F. Preuss
  • Modular electrolytic cell and processing apparatus
    Patent number: 4892636
    Abstract: An easily transportable electrolytic cell and associated processing apparatus is modularly constructed and supported in modular support sections that are easily separated and loaded onto transport vehicles for transport to distant remote sites where the electrolytic cell module and the processing apparatus module are reassembled and the apparatus is put into operation where the product chemical produced by the electrolytic cell is utilized.
    Type: Grant
    Filed: June 17, 1988
    Date of Patent: January 9, 1990
    Assignee: Olin Corporation
    Inventors: Roger E. Bolick, II, David W. Cawlfield, Kenneth E. Woodard, Jr.
  • Sealed semiconductor casing
    Patent number: 4889960
    Abstract: Reinforced glass composites are disclosed which are useful in hermetic semiconductor packaging as well as other applications. The disclosed composites include discrete particles in a tin-phosphorous-oxyfluoride glass mixture having a low glass transition temperature to prevent serious degradation of the discrete particles.
    Type: Grant
    Filed: February 1, 1985
    Date of Patent: December 26, 1989
    Assignee: Olin Corporation
    Inventor: Sheldon H. Butt
  • Coil handling rack
    Patent number: D306667
    Type: Grant
    Filed: March 27, 1987
    Date of Patent: March 20, 1990
    Assignee: Olin Corporation
    Inventor: Walter G. Fedder
  • Trash receptacle
    Patent number: D306928
    Type: Grant
    Filed: January 22, 1987
    Date of Patent: March 27, 1990
    Assignee: Hanna/Olin, Ltd.
    Inventor: Robert M. Hanna