Patents Assigned to Union Carbide Corporation
  • Process for the preparation of the parylene dimer
    Patent number: 4769505
    Abstract: An improved process is provided for the preparation of the dimer, 2,2-paracyclophane, which is useful as the starting material for parylene conformal coatings used in the electronics industry for the protection of various sensitive electronic components.The process comprises optimization of the normally low yield of dimer formed by the Hofmann elimination reaction of p-methylbenzyltrimethylammonium hydroxide by conducting the elimination reaction in the presence of a cosolvent and certain reaction promoters.
    Type: Grant
    Filed: July 17, 1987
    Date of Patent: September 6, 1988
    Assignee: Union Carbide Corporation
    Inventors: Chinsoo Lee, David R. Bassett
  • Polyether silicone copolymers with secondary or tertiary hydroxy terminated for stabilizing high resiliency urethane foam
    Patent number: 4769174
    Abstract: This invention describes novel molded flexible polyurethane foam surfactants which can be used in foam having high concentrations of reinforcing graft copolymer solids. The invention also describes an improved process for making these foams using the novel surfactants.
    Type: Grant
    Filed: December 30, 1987
    Date of Patent: September 6, 1988
    Assignee: Union Carbide Corporation
    Inventor: John A. Kilgour
  • Alkylation process utilizing enhanced boiling surface heat exchanger in the reaction zone
    Patent number: 4769511
    Abstract: The present invention is directed to an improvement in an alkylation process involving effluent refrigeration in which an enhanced boiling surface heat exchanger is utilized in the alkylation reaction zone so as to carry out the reaction at its optimum reaction temperature and at a positive compressor suction pressure.
    Type: Grant
    Filed: March 5, 1987
    Date of Patent: September 6, 1988
    Assignee: Union Carbide Corporation
    Inventor: Patrick S. O'Neill
  • Transition metal complex catalyzed processes
    Patent number: 4769498
    Abstract: Transition metal-poly-phosphite complex catalyzed carbonylation processes, especially hydroformylation, as well as transition metal-poly-phosphite ligand complex compositions.
    Type: Grant
    Filed: February 9, 1987
    Date of Patent: September 6, 1988
    Assignee: Union Carbide Corporation
    Inventors: Ernst Billig, Anthony G. Abatjoglou, David R. Bryant
  • Abatement of vapors from gas streams by solidification
    Patent number: 4769054
    Abstract: A process for abatement of warm melting point vapors from gas streams is provided. The warm melting point vapors are solidified by direct contact with a chilled liquid, and are subsequently removed from the chilled liquid using known separation techniques. The chilled liquid exhibits a vapor pressure at the contacting temperature which is sufficiently low to preclude unsafe levels of the chilled liquid vapor in the processed gas stream. The chilled liquid is cooled using indirect heat exchange with a cryogenic liquid and is recycled.
    Type: Grant
    Filed: October 21, 1987
    Date of Patent: September 6, 1988
    Assignee: Union Carbide Corporation
    Inventor: Frederic N. Steigman
  • Process for agglomerating ore concentrate utilizing clay and dispersions of polymer binders or dry polymer binders
    Patent number: 4767449
    Abstract: This invention is a method for agglomerating mineral ore concentrate comprising the commingling of mineral ore concentrate with a binding amount of water soluble polymers, preferably poly(acrylamides), and clay, preferably bentonite. The polymer is applied to the mineral ore concentrate either (1) as a dispersion in a non-aqueous dispersion medium or (2) as a dry powder. This invention is also a method of agglomerating mineral ore concentrate with flux material.
    Type: Grant
    Filed: June 19, 1987
    Date of Patent: August 30, 1988
    Assignee: Union Carbide Corporation
    Inventors: Meyer R. Rosen, Gregory J. Dornstauder, Lawrence Marlin
  • Composite separation membranes and the preparation and use thereof
    Patent number: 4767422
    Abstract: Composite membranes are post-treated by contact with a volatile solvent, with or without minute amounts of additives, followed by solvent evaporation, to repair defects in the thin separation layer thereof.
    Type: Grant
    Filed: April 8, 1987
    Date of Patent: August 30, 1988
    Assignee: Union Carbide Corporation
    Inventors: Benjamin Bikson, Salvatore Giglia, Gregory Kharas
  • Method to deliver ultra high purity helium gas to a use point
    Patent number: 4766731
    Abstract: A method to deliver ultra high purity helium gas to a use point without need for further pressurization of helium gas after it is warmed or vaporized, wherein gaseous helium, having a purity which can be less than that of the product, is passed in heat exchange relation with cold helium to warm or vaporize and thus pressurize the helium while simultaneously being cleaned of impurities, and the resulting helium gas from both sources is delivered as ultra high purity helium gas to the use point.
    Type: Grant
    Filed: September 1, 1987
    Date of Patent: August 30, 1988
    Assignee: Union Carbide Corporation
    Inventors: Lawrence S. Graczyk, Arthur W. Francis, Sr.
  • Glycosaminoglycan and cationic polymer combinations
    Patent number: 4767463
    Abstract: Combinations of glycosaminoglycan and certain cationic polymers provide modified glycosaminoglycan properties and can provide substantivity to keratinous material, compatibility, stability, humectancy, rheology and other properties useful in personal care or medical applications.
    Type: Grant
    Filed: April 15, 1987
    Date of Patent: August 30, 1988
    Assignee: Union Carbide Corporation
    Inventors: George L. Brode, Philip A. Band, Errol D. Goddard, Arminda G. Barbone, Adolf Leshchiner, Joseph P. Pavlichko, Emmett M. Partain, III, Pak S. Leung
  • Compositions of a relatively water-stable thermoplastic polymer and tetramethyl titanate dispersed in an alkylene-alkyl acrylate copolymer matrix
    Patent number: 4767820
    Abstract: Compositions of relatively water-stable thermoplastic polymers having hydrolyzable, pendant silane moieties and tetramethyl titanate dispersed in a normally solid alkylene-alkyl acrylate copolymer matrix. These compositions are useful as extrudates about wires and cables, water-curing in a relatively short period of time to crosslinked products.
    Type: Grant
    Filed: February 2, 1987
    Date of Patent: August 30, 1988
    Assignee: Union Carbide Corporation
    Inventor: Michael J. Keogh
  • Silicone-modified polyester resin and silicone-sheathed polyester fibers made therefrom
    Patent number: 4766181
    Abstract: Polyester resin is modified with siloxane block polymers in such a manner so as to form silicone-modified polyester copolymer domains of controlled size and distribution dispersed in the polyester matrix. These domains undergo microphase segregation and migration during the melt spinning and cold-drawing to the surface of the polyester fiber being formed so as to provide a silicone-sheathed polyester fiber.
    Type: Grant
    Filed: September 18, 1986
    Date of Patent: August 23, 1988
    Assignee: Union Carbide Corporation
    Inventors: Robert L. Ostrozynski, George H. Greene, James H. Merrifield
  • Process for the recovery of metal values
    Patent number: 4765834
    Abstract: A process for the selective concentration of metal values in solution wherein said metal-containing solution is contacted with a multiple-phase system having a common solvent, thereby causing the preferential migration of metal values into one phase of said multiple-phase system. The phases of the system may then be isolated and the metal values recovered therefrom by conventional techniques.
    Type: Grant
    Filed: June 9, 1986
    Date of Patent: August 23, 1988
    Assignee: Union Carbide Corporation
    Inventors: Kavssery P. Ananthapadmanabhan, Errol D. Goddard
  • Alkanolamine gas treating process for a feedstream containing hydrogen sulfide
    Patent number: 4764354
    Abstract: In an alkanolamine gas treating process for removing acid gas from a feedstream in which hydrogen sulfide is present, reduced corrosion of steel parts or components is observed when solution concentrations of hydrogen sulfide and vanadium in the plus five valence state are maintained above certain minimum levels.
    Type: Grant
    Filed: February 4, 1987
    Date of Patent: August 16, 1988
    Assignee: Union Carbide Corporation
    Inventors: Daniel J. Kubek, John G. McCullough, Kenneth J. Barr, Alexander J. Kosseim
  • Fuse assembly for solid electrolytic capacitor
    Patent number: 4763228
    Abstract: A solid electrolytic capacitor having an exothermic alloying fuse attached thereto, the fuse comprising a strip of wire sandwiched between a pair of preformed tapes having silicone on a side next to the wire and an organic polymer on the other side.
    Type: Grant
    Filed: November 20, 1987
    Date of Patent: August 9, 1988
    Assignee: Union Carbide Corporation
    Inventor: Tsung-Yuan Su
  • Process for trialkoxysilane/tetraalkoxysilane mixtures from silicon metal and alcohol
    Patent number: 4762939
    Abstract: A process for producing controlled trialkoxysilane/tetraalkoxysilane mixtures by the direct reaction of silicon metal with an alcohol in the presence of a catalytically effective amount of a copper catalyst and mixed solvents, wherein at least one solvent is inert and does not degrade under the reaction conditions and at least one other solvent promotes the reaction between trialkoxysilanes and alcohol.
    Type: Grant
    Filed: September 30, 1987
    Date of Patent: August 9, 1988
    Assignee: Union Carbide Corporation
    Inventor: Frank D. Mendicino
  • Aldehyde hydrogenation catalyst
    Patent number: 4762817
    Abstract: An aldehyde hydrogenation catalyst consisting essentially of a mixture of copper and zinc oxide impregnated with a minor selectivity improving amount of a selectvity enhancer comprising the combination of an alkali metal selectivity enhancer selected from the group consisting of sodium, potassium, lithium, cesium, and mixtures thereof and a transition metal selectivity enhancer selected from the group consisting of nickel, cobalt, and mixtures thereof.
    Type: Grant
    Filed: November 3, 1986
    Date of Patent: August 9, 1988
    Assignee: Union Carbide Corporation
    Inventors: John E. Logsdon, Richard A. Loke, Jay S. Merriam, Richard W. Voight
  • Upgrading of pyrolysis tar
    Patent number: 4762608
    Abstract: Pyrolysis tars are upgraded by hydrotreatment in the presence of a catalyst having a hydrogenation component and an acidic component. The treated pyrolysis tars are used to produce premium cokes useful in the production of graphite electrodes.
    Type: Grant
    Filed: December 20, 1984
    Date of Patent: August 9, 1988
    Assignee: Union Carbide Corporation
    Inventors: Rostislav Didchenko, Eric M. Dickinson
  • High coking value pitch binders
    Patent number: 4762566
    Abstract: A binder which comprises pitch and the condensation product of (A) a ketone or dione selected from the group consisting of C.sub.3 to C.sub.13 aliphatic linear, branched or cyclic ketones and diones having at least one active hydrogen on each carbon atom adjacent to a ##STR1## group, compounds of the formula: ##STR2## wherein a and b are integers having a values of 0 to 6, and the C.sub.1 to C.sub.4 alkyl substituted derivatives thereof; and (B) at least one compound selected from the group consisting of C.sub.5 to C.sub.11 aldehydes, said aldehydes having an aromatic ring containing 4 to 6 carbon atoms and 0 to 1 oxygen atoms, wherein said condensation product has a Heat of Reaction Value of less than about 155 cal/g. Said binders being useful in the production of graphite electrodes having superior physical and electrical properties.
    Type: Grant
    Filed: December 5, 1985
    Date of Patent: August 9, 1988
    Assignee: Union Carbide Corporation
    Inventor: Ronald A. Greinke
  • Process for recovering trimethoxysilane from a trimethoxysilane and methanol mixture
    Patent number: 4761492
    Abstract: An extractive distillation process for recovering trimethoxysilane from a trimethoxysilane-methanol mixture is provided using as the extractive solvent tetramethoxysilane.
    Type: Grant
    Filed: September 28, 1987
    Date of Patent: August 2, 1988
    Assignee: Union Carbide Corporation
    Inventors: Thomas E. Childress, George M. Omietanski, Frank D. Mendicino
  • Polymer/polyol compositions having improved combustion resistance
    Patent number: RE32733
    Abstract: A stable dispersion of a polymer in a polyol which imparts improved combustion resistance to polyurethane foams prepared therefrom wherein the polymer is a free-radical initiated copolymer containing from about 0.5 to 75 weight percent, based on the copolymer, of acrylonitrile and from about 25 to 99.5 weight percent, based on the copolymer, of at least one other polymerizible ethylenically unsaturated monomer and wherein the copolymer is characterized by a crosslinking coefficient of less than 55.
    Type: Grant
    Filed: December 12, 1985
    Date of Patent: August 16, 1988
    Assignee: Union Carbide Corporation
    Inventors: Donald W. Simroth, Frank E. Critchfield, Edgar G. Shook