Patents Assigned to Union Carbide Corporation
  • Polyarylate compositions having improved hydrolytic stability
    Patent number: 4348500
    Abstract: Described herein are molding compositions comprising a blend of (a) a polyarylate derived from a dihydric phenol and an aromatic dicarboxylic acid, (b) a polyester derived from an aliphatic or cycloaliphatic diol and at least one aromatic dicarboxylic acid, (c) an epoxide and, optionally, at least one thermoplastic polymer. An article molded from these compositions has a good balance of mechanical properties and improved hydrolytic stability.
    Type: Grant
    Filed: December 24, 1980
    Date of Patent: September 7, 1982
    Assignee: Union Carbide Corporation
    Inventors: Lloyd M. Robeson, Ted T. Szabo
  • Heteronuclear-bridged rhodium clusters
    Patent number: 4348539
    Abstract: Heteronuclear-bridged rhodium clusters useful as catalysts in the hydroformylation of olefins.
    Type: Grant
    Filed: May 6, 1981
    Date of Patent: September 7, 1982
    Assignee: Union Carbide Corporation
    Inventors: Ernst Billig, Jackie D. Jamerson, Roy L. Pruett
  • Chemically bonded aluminum coating for carbon via monocarbides
    Patent number: 4347083
    Abstract: An aluminum coated carbon article or composite, and process therefor having aluminum chemically bonded to carbon via an interface of a metal monocarbide formed in situ when an intermetallic phase comprising aluminum and a metal capable of reacting with carbon to form a metal carbide is reduced by carbon to aluminum and a metal carbide, the metal selected from the group consisting of tantalum, titanium and hafnium.
    Type: Grant
    Filed: August 29, 1980
    Date of Patent: August 31, 1982
    Assignee: Union Carbide Corporation
    Inventor: Raymond V. Sara
  • Process for the production of high pressure oxygen gas
    Patent number: 4345925
    Abstract: Oxygen gas is produced at greater than atmospheric pressure by separating air into oxygen-rich and nitrogen-rich fractions in a distillation column, removing the oxygen as liquid and pumping it to the desired pressure and subsequently vaporizing the pumped liquid oxygen by means of energy absorbed from a recirculation argon containing fluid.
    Type: Grant
    Filed: November 26, 1980
    Date of Patent: August 24, 1982
    Assignee: Union Carbide Corporation
    Inventor: Harry Cheung
  • Purification of ammonium tungstate solutions
    Patent number: 4346061
    Abstract: Prior to evaporative crystallization of ammonium tungstate solutions to give ammonium paratungstate (APT), an aluminum compound, e.g. aluminum sulfate solution, is added to precipitate silicon and phosphorus impurities. The yield of crystallized ammonium paratungstate is thereby increased.
    Type: Grant
    Filed: March 31, 1981
    Date of Patent: August 24, 1982
    Assignee: Union Carbide Corporation
    Inventor: John B. Goddard
  • Multilayer ceramic capacitor with foil terminal
    Patent number: 4346429
    Abstract: A ceramic chip capacitor having a metal foil terminal strip configuration which reduces high frequency inductance.
    Type: Grant
    Filed: July 9, 1980
    Date of Patent: August 24, 1982
    Assignee: Union Carbide Corporation
    Inventor: Henrique V. DeMatos
  • Method of improving antiwear properties of high temperature hydrocarbon compositions
    Patent number: 4346015
    Abstract: The lubricating characteristics of high temperature fluids used in Rankine Cycle and heat pump systems has been enhanced by incorporating therein heterocyclic arenes containing 8 to about 18 ring carbon atoms and an average of 1 to 2 ring nitrogen or S atoms per arene, and optionally 1 to 2 ring O atoms with substituents such as alkyl, amino, keto oxygen or hydroxyl groups.
    Type: Grant
    Filed: August 14, 1980
    Date of Patent: August 24, 1982
    Assignee: Union Carbide Corporation
    Inventors: George S. Somekh, Robert A. Cupper
  • Phillipsite-type zeolites for ammonia adsorption
    Patent number: 4344851
    Abstract: Ammonium ions are selectively removed from aqueous solutions containing calcium cations by cation exchange with natural or synthetic zeolites of the phillipsitegismondite type, which possess unusual capacity and selectivity for the ammonium ion.
    Type: Grant
    Filed: January 16, 1981
    Date of Patent: August 17, 1982
    Assignee: Union Carbide Corporation
    Inventors: John D. Sherman, Ronald J. Ross
  • Process for the production of ethylene glycol
    Patent number: 4345104
    Abstract: A process for preparing ethylene glycol by the oxidative coupling of methanol in the vapor state.
    Type: Grant
    Filed: June 30, 1981
    Date of Patent: August 17, 1982
    Assignee: Union Carbide Corporation
    Inventor: Jean B. Cropley
  • Process for producing organo-silane coated asbestos base material
    Patent number: 4344992
    Abstract: A chrysotile asbestos base material is mixed in water containing dissolved alum (aluminum sulphate) prior to addition of the organo-silane coating.
    Type: Grant
    Filed: June 30, 1981
    Date of Patent: August 17, 1982
    Assignee: Union Carbide Corporation
    Inventor: Sundaresan Ramachandran
  • Hydroxymethylation of the carbon residue of organosilicon compounds
    Patent number: 4345103
    Abstract: This invention relates to the manufacture of alcohols and derivatives thereof from the carbon residue of an organosilicon compound such that the resulting alcohol and derivatives thereof contain one carbon and one oxygen more than said carbon residue.
    Type: Grant
    Filed: June 29, 1981
    Date of Patent: August 17, 1982
    Assignee: Union Carbide Corporation
    Inventor: Leonard Kaplan
  • Preparation of alkoxyaminohydridosilanes
    Patent number: 4345088
    Abstract: Novel compounds of the formula ##STR1## are produced by reacting tris(dialkylamino)hydridosilanes with alkanols under specified conditions. The novel compounds are useful as analytical tools, as coupling agents, and in organic synthesis.
    Type: Grant
    Filed: March 31, 1981
    Date of Patent: August 17, 1982
    Assignee: Union Carbide Corporation
    Inventors: Steven C. Vick, Bernard Kanner
  • Constant current SCR power supply method and system for a welding load
    Patent number: 4345139
    Abstract: A regulated constant current is supplied to a welding load by an SCR power supply having an SCR rectifier network interposed in series between the welding load and applied input power with the SCR power supply comprising means for generating a first feedback signal proportional to arc current which substantially coincides in time and phase with the arc current; means for generating a second feedback signal proportional to arc current which is substantially nonresponsive to the arc current fundamental ripple frequency, means for weighing the first and second feedback signals in a predetermined proportion to establish an error feedback control signal and means for applying trigger signals to the SCR rectifier network in timed synchronism with the input AC power line as a function of the error feedback control signal.
    Type: Grant
    Filed: December 30, 1980
    Date of Patent: August 17, 1982
    Assignee: Union Carbide Corporation
    Inventor: Philip K. Higgins
  • Gas-shielded flux-cored wire electrodes for high impact weldments
    Patent number: 4343984
    Abstract: A cored wire electrode for use with a shielding gas, particularly in out-of-position welding, said electrode having a core material containing rutile, an arc stabilizer, deoxidizers including from about 5 to 15 weight percent of a manganese and silicon-containing compound, from about 1 to about 7 weight percent of magnesium and/or magnesium-aluminum alloys, from about 3 to about 10 weight percent manganese oxide, from about 5 to 20 weight percent nickel, from about 2 to 15 weight percent silica, and from about 0.5 to 5.0 weight percent Al.sub.2 O.sub.3 -SiO.sub.2 -K.sub.2 O.
    Type: Grant
    Filed: April 19, 1978
    Date of Patent: August 10, 1982
    Assignee: Union Carbide Corporation
    Inventors: Ronald B. Smith, Edward J. Galda, Masahiro Nakabayashi
  • Water curable, amino silane modified alkylene-alkyl acrylate copolymers
    Patent number: 4343917
    Abstract: The disclosure of application is directed to water-curable, amino silane modified alkylene-alkyl acrylate copolymers, free of halide salts and halide ions, which can be extruded about electrical conductors to provide improved insulation thereon.
    Type: Grant
    Filed: April 2, 1981
    Date of Patent: August 10, 1982
    Assignee: Union Carbide Corporation
    Inventor: Michael J. Keogh
  • Process for the preparation of stable silica sol
    Patent number: 4343717
    Abstract: Stable, colloidal, silica sol is provided by a process which comprises vigorously mixing a slurry of calcium silicate with a dilute acid having a pK.sub.a value of less than about 8, such as sulfuric acid, and thereafter separating the sol from the insoluble precipitate of calcium salt. The process provides an inexpensive method for production of the sol as opposed to those methods which currently use sodium silicate as the starting material.
    Type: Grant
    Filed: February 8, 1980
    Date of Patent: August 10, 1982
    Assignee: Union Carbide Corporation
    Inventor: Brent M. Lok
  • Universal mountable display tray
    Patent number: 4343405
    Abstract: A display tray for consumer type articles having a plurality of pivotable support means for securing the tray on various width slats and various "peg-board" type support walls, and also having horizontal brace support means for maintaining the tray in a horizontal position.
    Type: Grant
    Filed: March 27, 1980
    Date of Patent: August 10, 1982
    Assignee: Union Carbide Corporation
    Inventors: Jean Virte, Laurent Costa
  • Lubricant compositions for finishing synthetic fibers
    Patent number: 4343616
    Abstract: Lubricant compositions for finishing synthetic fibers which exhibit improved thermal stability and low-fuming characteristics are provided which contain 50 to 90 percent by weight of a thermally stable lubricant and 10 to 50 percent by weight of an emulsifiably effective surfactant having the formula:R-O-A.sub.a B.sub.b -Hwherein R is an alkyl having 6 to 14 carbon atoms, A is oxypropylene groups, B is oxyethylene groups, a is an integer having values of about 4 to 15, and b is an integer having values of 5 to 10.
    Type: Grant
    Filed: December 22, 1980
    Date of Patent: August 10, 1982
    Assignee: Union Carbide Corporation
    Inventors: Quintin W. Decker, Erich Marcus
  • Process for extruding ethylene polymers
    Patent number: 4343755
    Abstract: A process comprising forming an extrudate, preferably in the form of a film, from an ethylene polymer which, in an extruder, melts rapidly and experiences slow shear thinning by melt extruding said polymer through an extruder having an extrusion screw therein with a length to diameter ratio of between about 15:1 to 21:1.
    Type: Grant
    Filed: August 8, 1979
    Date of Patent: August 10, 1982
    Assignee: Union Carbide Corporation
    Inventors: John C. Miller, Archibald L. Burnett
  • Process for operating a fluidized bed
    Patent number: 4343634
    Abstract: In a process for operating a fluidized bed, wherein the bed particles have a Reynolds number of less than 20, at a predetermined cryogenic temperature comprising (i) bringing a cryogenic fluid into indirect contact with the bed; (ii) permitting the fluid to vaporize at the area of indirect contact whereby the bed is cooled; and (iii) utilizing the vapor from step (ii) to fluidize, and further cool, the bed, said cooling in steps (ii) or (iii) being from ambient temperature to the predetermined cryogenic temperature,the improvement comprising changing, continuously or stepwise, the minimum fluidizing mass flow of vapor as the temperature of the bed changes in accordance with a specified equation.
    Type: Grant
    Filed: March 23, 1981
    Date of Patent: August 10, 1982
    Assignee: Union Carbide Corporation
    Inventor: Robert B. Davis