Patents Examined by H. M. Sneed
  • Patent number: 5023226
    Abstract: Substituted or unsubstituted cyclohexylamine and substituted or unsubstituted dicyclohexylamine can be produced by catalytic hydrogenation of substituted or unsubstituted aniline by using a ruthenium catalyst which in addition to ruthenium also contains palladium, platinum or palladium and platinum on a support from the group consisting of Al.sub.2 O.sub.3 and aluminum spinel treated with chromium and manganese and containing the noble metals in a total amount of 0.05-5% by weight and a weight ratio of Ru:Pd, Ru:Pt, or Ru:Pd/Pt of 1:9-9:1. All percentages are based on the total weight of the catalyst.
    Type: Grant
    Filed: January 9, 1989
    Date of Patent: June 11, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Otto Immel, Hans-Helmut Schwarz, Reinhard Thiel
  • Patent number: 5006518
    Abstract: Novel 19-nor steroids of the formula ##STR1## wherein R' is selected from the group consisting of propyl, propenyl, iodoethenyl, iodoethynyl or --C.tbd.C--CH.sub.2 --Hal.sub.1, Hal.sub.1 is selected from the group consisting of fluorine, chlorine and bromine and their non-toxic, pharmaceutically acceptable acid addition salts having a remarkable antiglucocorticoid and antiprogestomimetic activity.
    Type: Grant
    Filed: December 30, 1988
    Date of Patent: April 9, 1991
    Assignee: Roussel Uclaf
    Inventors: Martine Moguilewsky, Lucien Nedelec, Francois Nique, Daniel Philibert
  • Patent number: 4973776
    Abstract: A process is described for the gas-phase condensation of natural gas or methane into gasoline-range hydrocarbons comprising the steps of: (a) reacting a mixture of methane and acetylene in the presence of a solid superacid catalyst to form isobutene, and (b) converting the isobutene product into gasoline-range hydrocarbons in the presence of a crystalline silicate zeolite catalyst.
    Type: Grant
    Filed: December 12, 1989
    Date of Patent: November 27, 1990
    Assignee: Energy, Mines & Resources - Canada
    Inventors: Vincenza M. Allenger, Raj N. Pandey
  • Patent number: 4956482
    Abstract: Known pregnane derivatives are prepared by esterification of know androstane derivatives to give new esters of Formula III ##STR1## wherein in each case symbolizes a single bond or a double bond,n is 1 or 2,R.sub.1 is hydrogen or methyl,R.sub.2 is hydrogen or formyl, andR.sub.3 is chlorine, hydroxy or an alkanoyloxy group of up to 6 carbon atoms,and reaction of the latter with Ag(I) and formic acid.
    Type: Grant
    Filed: March 20, 1989
    Date of Patent: September 11, 1990
    Assignee: Schering Aktiengesellschaft
    Inventors: Helmut Hofmeister, Klaus Annen, Henry Laurent, Rudolf Wiechert
  • Patent number: 4950824
    Abstract: A process for the production of 2,6-diisopropylnaphthalene is disclosed wherein an isopropylation reaction mixture containing isopropylated naphthalenes is subjected to transalkylation with a triisopropylnaphthalene-containing mixture to obtain a mixture containing mono-, di- and tri-isopropylnaphthalenes which is then separated into a first fraction containing monisopropylnaphthalenes, a second fraction containing diisopropylnaphthalenes and a third fraction containing triisopropylnaphthalenes. The first and third fractions are recycled to the above system, while the second fraction is subjected to separation treatments for the recovery of 2,6-diisopropylnaphthalene. The second fraction from which 2,6-diisopropylnaphthalene has been removed is subjected to transalkylation with naphthalene to obtain a monoisopropylnaphthalene-rich mixture which is to be fed to the isopropylation step.
    Type: Grant
    Filed: August 2, 1989
    Date of Patent: August 21, 1990
    Assignees: Chiyoda Corporation, NKK Corporation
    Inventors: Yoshimi Shiroto, Mitsunori Shimura, Kenji Shimokawa, Yoshio Fukui, Sachio Asaoka, Hiroto Tajima, Kazuaki Ueda, Yakudo Tachibana, Kazuhiko Tate, Hiroaki Taniguchi
  • Patent number: 4950332
    Abstract: A process for decolorizing an aqueous sugar solution by contacting the solution with an absorbent resin, wherein the adsorbent resin is a macroporous copolymer being post-crosslinked in a swollen state in the presence of a Friedel-Crafts catalyst and functionalized with hydrophilic groups prior to contact with the aqueous sugar solution.
    Type: Grant
    Filed: February 27, 1989
    Date of Patent: August 21, 1990
    Assignee: The Dow Chemical Company
    Inventors: Richard T. Stringfield, H. Robert Goltz, Seth I. Norman, Upen J. Bharwada, Robert L. LaBrie
  • Patent number: 4888421
    Abstract: This invention discloses processes and resulting products for the manufacture of metal heptonates from saccharides via a Kiliani-Fisher reaction and subsequent reaction with the desired metal. Manganese, iron, copper zinc and magnesium heptonates are each made by a slightly different process but the resulting metal chelates provide a soluble form of the metal for agricultural, industrial, environmental and construction uses. The amount of metal chelated is directly related to the percentage of fructose in the initial monosaccharide mixture. For cations with no color, the chelating agent can be decolorized with H.sub.2 O.sub.2 to give a lighter colored product providing the NH.sub.3 concentration is reduced below 0.35% prior to the decolorizing step. An equivalent strong oxidizing agent may be used instead of H.sub.2 O.sub.2.
    Type: Grant
    Filed: September 18, 1987
    Date of Patent: December 19, 1989
    Inventors: Brooks M. Whitehurst, Garnett B. Whitehurst, Donald F. Clemens
  • Patent number: 4875998
    Abstract: A method and apparatus for a combined solvent and hot water extraction of bitumen oils from tar-sands ore. The crushed tar-sands ore is conditioned in hot water while excluding air, after which oversized and inert rocks are removed by screening. The bitumen content of the resulting slurry is then extracted with a water immisible hydrocarbon solvent of low density to form a solution of bitumen oils in solvent or bitumen extract phase, a middle water phase and a lower spent wet solids phase. Each of these phases is thereafter processed to produce product bitumen oils and to recover solvent and water for reuse within the process. The product bitumen oils are further processed to separate the fines, and may be refined and separated into synthetic crude oil and asphaltenes residue components. The asphaltenes residue component may be burned in a fluidized bed boiler to provide process heat and electrical power for the method.
    Type: Grant
    Filed: February 18, 1988
    Date of Patent: October 24, 1989
    Assignee: Solv-Ex Corporation
    Inventor: John S. Rendall
  • Patent number: 4873213
    Abstract: The hydroformylation of olefins with rhodium complex catalysts is described. The catalysts employed comprises a rhodium complex with at least one phosphine having a specified structure, e.g., tris(benzyl)phosphine. Preferred phosphines have a pKa in the range of about 3.5 up to 5.3 and a cone angle in the range of about up to Hydroformylation reactions at relatively low temperatures and pressure and yet with high rates of reaction and high selectivity to aldehyde product are obtained by the practice of the present invention.
    Type: Grant
    Filed: August 12, 1988
    Date of Patent: October 10, 1989
    Inventors: Thomas A. Puckette, Thomas J. Devon
  • Patent number: 4849026
    Abstract: For cleaning and/or drying the inner walls of projected pipelines the pressure in the interior of the pipeline is decreased and the vapor formed by evaporation of the substance adhering to the pipe inner wall and, if applicable, present foreign gases are exhausted from the pipeline. Upon exit from the pipeline and prior to entry into the exhausting apparatus, the exhausted medium passes through a condensating apparatus whose cooling surfaces are maintained at a temperature that is lower than the pipe wall temperature. With a temperature difference sufficient to condense the substance vapor on said cooling surfaces it was possible to considerably enhance the drying rate as compared to pure vacuum-type drying.
    Type: Grant
    Filed: August 2, 1985
    Date of Patent: July 18, 1989
    Assignee: Energietechnik
    Inventor: Ing. H. Steinhaus
  • Patent number: 4849095
    Abstract: A process for hydrogenating a hydrocarbonaceous charge stock containing nitrogen, sulfur or halogen-based impurities which process comprises the steps of: (a) contacting the hydrocarbonaceous charge stock in the presence of hydrogen with a hydrogenation catalyst in a hydrogenation reaction zone to simultaneously increase the hydrogen content of the hydrocarbonaceous charge stock and to generate at least one water-soluble inorganic compound produced from the reaction of said nitrogen, sulfur or halogen-based impurities in said hydrocarbonaceous charge stock and the hydrogen; (b) contacting the reaction zone effluent containing hydrogenated hydrocarbonaceous compounds and at least one said water-soluble inorganic compound with a fresh aqueous scrubbing solution; (c) introducing a resulting admixture of the reaction zone effluent and the aqueous scrubbing solution into a separation zone to provide a hydrogenated hydrocarbonaceous stream and a spent aqueous scrubbing solution stream containing at least a portion
    Type: Grant
    Filed: May 8, 1987
    Date of Patent: July 18, 1989
    Assignee: UOP
    Inventors: Russell W. Johnson, Walter F. Hribik, Lee Hilfman
  • Patent number: 4846962
    Abstract: Basic nitrogen compounds (BNC) are selectively removed from solvent extracted oils by adsorption of said BNC's by solid acidic polar adsorbents. The oils are extracted using any of the common extraction solvents, such as furfural, phenol, SO.sub.2, N-methyl-2-pyrrolidone (NMP), preferably NMP. The resulting raffinate, which contains the desirable oil fraction, has the BNC's present therein removed by adsorption thereof onto an adsorbent, characterized as being a solid, polar acidic adsorbent, exemplified by silica-alumina, a high alumina base amorphous cracking catalyst (such as manufactured by Ketjen/Akzo) and crystalline zeolite (such as H-Y zeolites) are effective adsorbents. The adsorbents may additionally contain fluorine or may contain up to 30 weight percent water. The adsorbents are regenerated by either purging with hydrogen at elevated temperature and pressure, or by washing the BNC saturated adsorbent with extraction process extraction solvent, such as NMP.
    Type: Grant
    Filed: February 12, 1987
    Date of Patent: July 11, 1989
    Assignee: Exxon Research and Engineering Company
    Inventor: Keith C. Yao
  • Patent number: 4824818
    Abstract: This invention relates to a catalytic composite effective in oxidizing mercaptans contained in a sour petroleum distillate to disulfides. The catalytic composite comprises a metal chelate, an onium compound and optionally an alkali metal hydroxide. The onium compound may be selected from the group consisting of phosphonium, arsonium, stibonium, oxonium and sulfonium compounds, with phosphonium, oxonium and sulfonium compounds preferred. Additionally, metal phthalocyanines are a preferred class of metal chelates. This invention also relates to an improved process for treating a sour petroleum distillate, wherein the improvement comprises using the catalytic composite described above.
    Type: Grant
    Filed: February 5, 1988
    Date of Patent: April 25, 1989
    Assignee: UOP Inc.
    Inventors: Jeffery C. Bricker, Robert R. Frame
  • Patent number: 4819615
    Abstract: A piggy back evaporator is sealably coupled in open box form overlying a sugar maple sap evaporator and aligned with an upright flue pan of the conventional sugar maple sap evaporator which, when fired, boils off vaporizable constituents of the sap. The piggy back evaporator includes a drip pan sealably mounted to the flue pan. The drip pan includes an oblique condensate drain sheet extending over the major length of the same. A steam hole within the condensate drain sheet allows steam to reach the lower surface of a bottom wall of a piggy back pan. The piggy back pan bottom wall is corrugated to define a series of laterally spaced troughs on its upper face and flues on its lower face. A hood overlies the piggy back pan and seals off the interior thereof.
    Type: Grant
    Filed: May 29, 1987
    Date of Patent: April 11, 1989
    Inventors: Gordon L. Richardson, James G. Richardson
  • Patent number: 4806228
    Abstract: A process for the production of pitch raw materials having improved properties comprising extracting coal-tar pitch free of solids with a mixture of a supercritical gas extracting agent and an entrainer at elevated temperatures and pressures, passing the extraction mixture to a plurality of separation steps where the supercritical gas and entrainer are removed by lowering the pressure and/or raising the temperature, recycling the mixture of extracting agent and entrainer to the extraction step and recovering the pitch fractions from the separation step, the said pitch fractions being useful for diverse purposes such as soot production, electrode bonding agents, etc.
    Type: Grant
    Filed: January 7, 1987
    Date of Patent: February 21, 1989
    Assignee: Rutgerswerke AG
    Inventors: Herbert Beneke, Siegfried Peter
  • Patent number: 4789460
    Abstract: A process for filtering contaminants from oil is provided. A polyalkoxyalkylamine is admixed with the oil in an amount sufficient to improve the filtration rate thereof. The polyalkoxyalkylamine is particularly suitable for use in processes for removing impurities from used lubricating oil wherein the oil is admixed with a treating agent to form a precipitate of the impurities and the impurities are filtered from the oil.
    Type: Grant
    Filed: August 10, 1987
    Date of Patent: December 6, 1988
    Assignee: Phillips Petroleum Company
    Inventors: Donald C. Tabler, Marvin M. Johnson
  • Patent number: 4786403
    Abstract: This invention relates to a process for preparing highly active hydrotreating catalysts prepared by incorporating cobalt and an element selected from the group consisting of molybdenum, tungsten and mixtures thereof, into an alumina hydrogel support. The final calcined catalysts have surface areas greater than about 300 m.sup.2 /g, flat plate crush strengths greater than about 14 lbs and more than about 80% of their pore volume in pores having diameters less than about 70 .ANG..
    Type: Grant
    Filed: August 13, 1987
    Date of Patent: November 22, 1988
    Assignee: Shell Oil Company
    Inventor: Richard A. Kemp
  • Patent number: 4784752
    Abstract: Poisoning of a cracking catalyst by contaminant metals such as nickel, vanadium and iron during fluid catalytic cracking of hydrocarbon charge stock containing the contaminant metals is suppressed by depositing minor amounts of a bismuth-containing passivating agent on the catalyst, desirably, a weight ratio of bismuth to nickel equivalents (nickel+0.2 vanadium+0.1 iron) of about 0.01:1 to about 1:1. The passivating agent can also comprise mixtures of compounds of bismuth and antimony, bismuth and tin.
    Type: Grant
    Filed: May 5, 1987
    Date of Patent: November 15, 1988
    Assignee: Chevron Research Company
    Inventors: Periaswamy Ramamoorthy, Ashok S. Krishna
  • Patent number: 4775458
    Abstract: Multifunctional process antifoulant compositions and methods are disclosed. The compositions comprise (1) a polyalkenylthiophosphonic acid or ester thereof, and at least one additional antifouling component selected from the groups (2), (3) and (4) wherein (2) is an effective antioxidant compound adapted to inhibit oxygen based polymerization of said hydrocarbon or petrochemical, (3) is a corrosion inhibiting compound, and (4) is a metal deactivator. The process comprises adding from about 0.5-10,000 parts of the combination of (1) and additional antifoulant component(s) to the particular petrochemical or hydrocarbon for which multifunctional antifouling protection is desired.
    Type: Grant
    Filed: December 18, 1986
    Date of Patent: October 4, 1988
    Assignee: Betz Laboratories, Inc.
    Inventor: David R. Forester
  • Patent number: 4773988
    Abstract: Arsenic is removed from shale oil by the addition of one or more basic materials to the shale oil.
    Type: Grant
    Filed: September 23, 1986
    Date of Patent: September 27, 1988
    Assignee: Union Oil Company of California
    Inventor: Dennis D. Delaney