Patents Assigned to Union Carbide Corporation
  • Process to recover hydrogen-free higher boiling synthesis gas component
    Patent number: 4805414
    Abstract: A process to recover higher boiling synthesis gas component substantially free of hydrogen comprising partial condensation of a synthesis gas reaction stream, defined stripping of hydrogen out of the resulting liquid, and fractional distillation of the resulting fluid.
    Type: Grant
    Filed: December 15, 1987
    Date of Patent: February 21, 1989
    Assignee: Union Carbide Corporation
    Inventor: Theodore F. Fisher
  • Process for the preparation of the parylene dimer
    Patent number: 4806702
    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 halide by conducting the elimination reaction in the presence of dimethysulfoxide and certain reaction promoters.
    Type: Grant
    Filed: May 26, 1987
    Date of Patent: February 21, 1989
    Assignee: Union Carbide Corporation
    Inventors: Chinsoo Lee, David R. Bassett
  • Reactor system and method for forming uniformly large-diameter polycrystalline rods by the pyrolysis of silane
    Patent number: 4805556
    Abstract: This invention relates to the manufacture of high-purity polycrystalline silicon rods by the pyrolysis of silane. More specifically, the present invention relates to an improved method for pyrolyzing monosilane to form high-quality polycrystalline rods of uniform diameter and to an improved pyrolysis reactor system for forming high-quality polycrystalline silicon rods of uniform diameter at high production rates.
    Type: Grant
    Filed: January 15, 1988
    Date of Patent: February 21, 1989
    Assignee: Union Carbide Corporation
    Inventors: David W. Hagan, William D. Burke, Thomas R. Thoman, McRea B. Willmert
  • Air separation method with integrated gas turbine
    Patent number: 4806136
    Abstract: An air separation method employing compression powered by a gas turbine and employing four heat regenerable adsorbent purifiers wherein two purifiers are used to purify feed air while a third purifier is being regenerated by hot regeneration gas and a fourth purifier is being cooled so as to be ready to purify feed air.
    Type: Grant
    Filed: December 15, 1987
    Date of Patent: February 21, 1989
    Assignee: Union Carbide Corporation
    Inventors: Donna F. Kiersz, Karen D. Parysek
  • Process for producing epoxyorganoalkoxysilanes
    Patent number: 4804768
    Abstract: There is disclosed a process for producing certain epoxyorganoalkoxysilanes through the rhodium catalyzed hydrosilation of ethylenically unsaturated epoxides and alkoxysilanes in the presence of nitrogenous impurities.
    Type: Grant
    Filed: September 30, 1986
    Date of Patent: February 14, 1989
    Assignee: Union Carbide Corporation
    Inventors: Jennifer M. Quirk, Bernard Kanner
  • Polyolefin blends
    Patent number: 4804714
    Abstract: A polyolefin blend comprising:(a) a linear low density copolymer of ethylene and at least one alpha-olefin having 3 to 6 carbon atoms produced in the presence of an activated supported catalyst containing chromium and titanium, said copolymer having a density in the range of about 0.916 to about 0.922 gram per cubic centimeter and a melt index in the range of about 0.30 to about 1.2 grams per 10 minutes and being present in an amount of about 55 to about 75 percent by weight; and(b) a very low density copolymer of ethylene and at least one alpha-olefin have 3 to 8 carbon atoms produced in the presence of an activated supported catalyst containing magnesium, titanium, a hydrocarbyloxy moiety, halogen, and an electron donor, said copolymer having a density in the range of about 0.890 to about 0.910 gram per cubic centimeter and a melt index in the range of about 0.30 to about 8.
    Type: Grant
    Filed: November 20, 1987
    Date of Patent: February 14, 1989
    Assignee: Union Carbide Corporation
    Inventor: Anthony R. Olivo
  • Novel n-silyl substituted 1-sila-2-azacyclopentanes
    Patent number: 4804771
    Abstract: This invention relates to a novel class of N-silyl substituted 1-sila-2-azacyclopentane compounds. In a preferred embodiment of the instant invention, the novel compound 1,1-dimethoxy-2-(trimethoxysilyl)-1-sila-2-azacyclopentane is disclosed.
    Type: Grant
    Filed: March 31, 1987
    Date of Patent: February 14, 1989
    Assignee: Union Carbide Corporation
    Inventor: Enrico J. Pepe
  • Process for agglomerating mineral ore concentrate utilizing dispersions of polymer binders or dry polymer binders
    Patent number: 4802914
    Abstract: This invention is a method for agglomerating mineral ore concentrate comprising the commongling of mineral ore concentrate with a binding amount of a water soluble, high molecular weight polymer. The selected polymer is applied to the mineral ore concentrate either (1) as a dispersion in a non-aqueous medium or (2) as a dry powder. The most preferred polymers are water soluble poly(acrylamide) based polymers.
    Type: Grant
    Filed: September 5, 1986
    Date of Patent: February 7, 1989
    Assignee: Union Carbide Corporation
    Inventors: Meyer R. Rosen, Lawrence Marlin, Anthony C. Bracco
  • Process for the preparation of thermoplastic elastomers
    Patent number: 4803244
    Abstract: A process for the preparation of a thermoplastic elastomer comprising admixing, under reaction conditions, an unsaturated elastomer containing carbon-carbon double bonds; an essentially saturated thermoplastic homopolymer or copolymer; a multifunctional organosilicon compound containing an average of at least two Si--H groups per molecules; and a catalyst capable of hydrosilylating the carbon-carbon double bonds of the unsaturated elastomer.
    Type: Grant
    Filed: November 16, 1987
    Date of Patent: February 7, 1989
    Assignee: Union Carbide Corporation
    Inventor: Jeffrey D. Umpleby
  • Method for reducing sheeting during polymerization of alpha-olefins
    Patent number: 4803251
    Abstract: A method for reducing sheeting during polymerization of alpha-olefins by feeding either a positive charge generating or negative charge generating chemical additive to the reactor responsive to particular static levels in the reactor. The chemical additive is added in amounts which neutralize the charges in the reactor.
    Type: Grant
    Filed: November 4, 1987
    Date of Patent: February 7, 1989
    Assignee: Union Carbide Corporation
    Inventors: Mark G. Goode, Daniel M. Hasenberg, Thomas J. McNeil, Thomas E. Spriggs
  • Water-in-volatile silicone emulsifier concentrates, water-in-volatile silicone emulsions that are useful in personal-care formulations and methods of making same
    Patent number: 4801447
    Abstract: Water-in-volatile silicone emulsifier concentrates containing 2 to 30 wt. % water in the internal phase, 40 to 90 wt. % of a volatile cyclic silicone liquid such as the octamethylsiloxane cyclic tetramer, decamethylsiloxane cyclic pentamer or the dodecamethylsiloxane cyclic hexamer and 5 to 40 wt. % of a polyoxyalkylene substituted silicone containing per molecule 5 to 100 dialkylsiloxy units, two trialkylsiloxy end blocking units and 1 to 16 polyoxyalkylene substituted alkylsiloxy units of the average formula: ##STR1## in which R is an alkyl group having 1 to 4 carbon atoms and R can individually be the same or different, wherein R.degree. is a terminal group selected from the class consisting of hydrogen, alkyl, aryl, aralkyl and acyl radicals, n is an integer of 2 to 8, a is a number of 5 to 20 and b is 2 or 3.
    Type: Grant
    Filed: December 13, 1985
    Date of Patent: January 31, 1989
    Assignee: Union Carbide Corporation
    Inventor: Mary L. Gum
  • Tubesheet for semipermeable membrane devices
    Patent number: 4800019
    Abstract: A method for producing hollow fiber permeable devices having an essentially leak-free seal between the hollow fibers and the tubesheet that consists of heating the tubesheet containing the hollow fibers potted therein at a temperature essentially equal to or greater than the glass transition temperature of the thermoplastic material or the softening point of the thermoset material of the hollow fiber for a period of time sufficient to essentially densify the hollow fibers in the potted portion of the tubesheet and whereby a major portion of the interior diameter of the bores of the hollow fibers embedded in the tubesheet is enlarged; and the fiber permeable devices themselves.
    Type: Grant
    Filed: April 22, 1988
    Date of Patent: January 24, 1989
    Assignee: Union Carbide Corporation
    Inventors: Benjamin Bikson, Salvatore Giglia
  • In-situ pipeline coating system
    Patent number: 4798474
    Abstract: A self-contained trailer mounted proportioning, mixing, injection and collection system enables pipelines to be conveniently coated in-situ using two-component coating compositions moved through the pipeline by a double pig system without solvent vapor exposure, liquid spills or drips, undesired air bubble formation in the coating composition or exposure of operating personnel to pressurized gas, solvent vapors or liquid coating material splash or hazardous flammable or explosive conditions.
    Type: Grant
    Filed: October 22, 1987
    Date of Patent: January 17, 1989
    Assignee: Union Carbide Corporation
    Inventor: Joseph V. Daily
  • Elastomer polyolefin blends
    Patent number: 4798864
    Abstract: An elastomer blend comprising:(a) a polyolefin selected from the group consisting of (i) polyethylene; (ii) a hydrolyzable copolymer of ethylene and silane; and (iii) a hydrolyzable silane modified polyethylene; and(b) an ethylene-propylene-diene terpolymer rubber, with or without silane modification, said terpolymer when silane modified being hydrolyzable, provided that, when component (a) is polyethylene, the terpolymer is silane modified,the blend of components (a) and (b) having the following physical properties:(i) Secant Modulus in the range of about 100 psi to about 10,000 psi;(ii) 100% Modulus in the range of about 100 psi to about 1500 psi; and(iii) Shore A hardness in the range of about 10 to about 100.
    Type: Grant
    Filed: October 7, 1987
    Date of Patent: January 17, 1989
    Assignee: Union Carbide Corporation
    Inventor: Barry Topcik
  • Silicone-based stabilizers useful in the preparation of improved polyurethane foams
    Patent number: 4797501
    Abstract: This invention relates to silicon-based polymer/polyol stabilizers, processes for their manufacture and polyurethane foams containing these stabilized polymer polyols.
    Type: Grant
    Filed: October 13, 1987
    Date of Patent: January 10, 1989
    Assignee: Union Carbide Corporation
    Inventors: Richard C. Myerly, Michael W. Jorgenson, Frank E. Critchfield
  • Furnace temperature safety system
    Patent number: 4797776
    Abstract: A system to continually monitor the integrity of control and safety thermocouples within a furnace comprising a low furnace temperature reader connected in parallel with a high furnace temperature reader to a single safety thermocouple.
    Type: Grant
    Filed: May 12, 1987
    Date of Patent: January 10, 1989
    Assignee: Union Carbide Corporation
    Inventor: William J. Snyder
  • Novel wear-resistant laser-engraved ceramic or metallic carbide surfaces for friction rolls for working elongate members, method for producing same and method for working elongate members using the novel friction roll
    Patent number: 4794680
    Abstract: The invention is to friction rolls for working elongate members, e.g., webs or strands, such as crimper rolls, draw rolls, yarn package drive rolls comprising a roll having a generally cylindrical external surface and a ceramic, e.g., alumina, mixtures of alumina and titania, chromia, zirconia, or metallic carbide, e.g., tungsten carbide, coating bonded to the external surface, the coating being laser-engraved, that is, having a plurality of laser-formed depressions having a pattern covering substantially the entire exterior working surface of the roll and providing a uniform, wear-resistant surface texture over substantially the entire working surface.
    Type: Grant
    Filed: December 20, 1985
    Date of Patent: January 3, 1989
    Assignee: Union Carbide Corporation
    Inventors: Robert W. Meyerhoff, Richard C. Hill
  • UHP-Y-containing reforming catalysts and processes
    Patent number: 4795549
    Abstract: A catalyst for dehydrocyclization is disclosed comprising a Group VIII metal, the zeolite UHP-Y and, optionally, a halogen component. The instant invention provides reforming processes wherein more valuable products are formed that heretofore formed by use of other zeolite-containing catalysts.
    Type: Grant
    Filed: June 16, 1986
    Date of Patent: January 3, 1989
    Assignee: Union Carbide Corporation
    Inventors: Peter K. Coughlin, Jule A. Rabo
  • Can carrier composition
    Patent number: 4795767
    Abstract: A can carrier composition comprising at least one of each of the following components wherein all parts are by weight based on 100 parts by weight of component (i):(i) a high pressure polyethylene having a density in the range of about 0.918 to about 0.930 gram per cubic centimeter;(ii) a linear polyethylene having a density of less than about 0.925 gram per cubic centimeter in an amount of about 2 to about 35 parts;(iii) polyethylene wax in an amount of about 0.5 to about 5 parts;(iv) a mineral filler coated with a metal salt of a fatty acid in an amount of about 0.05 to about 0.50 parts;(v) a secondary amide in an amount of about 0.02 to about 0.15 part;(vi) an antioxidant in an amount of about 0.02 to about 0.10 part; and(vii) an organic phosphorus compound in an amount of about 0.005 to about 0.05 part.
    Type: Grant
    Filed: September 30, 1987
    Date of Patent: January 3, 1989
    Assignee: Union Carbide Corporation
    Inventors: Michael J. Turczyk, George M. Harlan
  • Impact promoters for mineral-filled thermoplastics
    Patent number: 4795768
    Abstract: A mineral-filled thermoplastic composition is disclosed which comprises polyethylene or an ethylene-vinyl acetate compolymer; a mineral filler consisting, in the case of polyethylene, of aluminum trihydrate, magnesium hydrate, calcium carbonate or calcium/magnesium carbonates, and, in the case of the ethylene-vinyl acetate copolymer, barium titanite or neodymium titanate; and, in the case of polyethylene, an impact promoter consisting of tri(2-ethylhexyl) phosphate, isostearic acid or dodecylpyridinium salts, the selection of the impact promoter being dependent upon the mineral filler being employed, and, in the case of the ethylene-vinyl acetate copolymer, an amount of isostearic acid sufficient to increase the ductility of the composition; also disclosed is an additive composition for a thermoplastic composition which comprises a hydrophobic agent and an impact promoter.
    Type: Grant
    Filed: December 3, 1986
    Date of Patent: January 3, 1989
    Assignee: Union Carbide Corporation
    Inventors: Fred H. Ancker, Arnold C. Ashcraft, Jr.