Patents Examined by James Saba
  • Patent number: 5185484
    Abstract: A Pt/Ba/USY catalyst prepared with a high SiO.sub.2 /Al.sub.2 O.sub.3 ratio USY gives improved aromatics selectivity compared to other Pt/USY containing catalysts. The improved selectivity is a result of the method of catalyst preparation which includes incorporation of a Group IIA metal after platinum incorporation.
    Type: Grant
    Filed: December 26, 1989
    Date of Patent: February 9, 1993
    Assignee: Mobil Oil Corp
    Inventors: Kenneth J. Del Rossi, Garry W. Kirker, Albin Huss, Jr.
  • Patent number: 5124497
    Abstract: A process for producing monosubstituted monoalkylaromatics from C.sub.8 +n-paraffins-containing feeds, by contacting the feeds with a non-acid catalyst comprising a microporous crystalline material containing tin, indium, thallium or lead, is disclosed.
    Type: Grant
    Filed: October 11, 1989
    Date of Patent: June 23, 1992
    Assignee: Mobil Oil Corporation
    Inventors: Ralph M. Dessau, Ernest W. Valyocsik, Randall D. Partridge
  • Patent number: 5118898
    Abstract: A process for the production of ethylene from a methane rich gas stream and an ethane rich gas stream. The process comprises the steps of:(a) introducing the methane rich gas stream together with molecular oxygen into a lower zone of a fluidized-bed of particles which are catalytically active in promoting an exothermic oxidative coupling reaction to produce ethylene and other hydrocarbons,(b) mixing the ethane rich gas stream into the fluidized-bed above the level at which substantially all of the molecular oxygen has been consumed, and(c) subjecting the mixture resulting from step (b) to an endothermic pyrolysis reaction in an upper zone of the fluidized-bed to produce further ethylene and other olefinically unsaturated hydrocarbons.The process is characterized in that the pyrolysis step (c) is carried out substantially without the addition of heat to the reactor, other than the heat content of the methane rich and ethane rich gas streams and the heat generated by the exothermic oxidative coupling reaction.
    Type: Grant
    Filed: March 14, 1990
    Date of Patent: June 2, 1992
    Assignees: The Broken Hill Proprietary Company Limited, Commonwealth Scientific & Industrial Research Organization
    Inventors: Ralph J. Tyler, James H. Edwards, Peter J. Jackson
  • Patent number: 5082989
    Abstract: A process is disclosed for the isomerization of a C.sub.4 feedstock and a C.sub.5 -C.sub.6 feedstock that reduces equipment and operating expenses by utilizing a process flow scheme that provides beneficial heat integration and facilitates the use of a common recovery zone while permitting a wide variation in the relative ratio of a C.sub.4 to a C.sub.5 -C.sub.6 feedstock. The isomerization of the C.sub.4 feedstock takes place in a separate reaction zone. The effluent from the C.sub.4 isomerization zone is heat exchanged against or mixed with the C.sub.5 -C.sub.6 feedstock ahead of an additional isomerization zone that converts the C.sub.5 -C.sub.6 hydrocarbons, and if present, normal C.sub.4 hydrocarbons, to more highly branched hydrocarbons. Effluents from both isomerization zones enter a common separation section that removes light gases from the isomerate product.This invention simplifies the simultaneous isomerization of C.sub.4 and C.sub.5 -C.sub.6 feedstocks.
    Type: Grant
    Filed: December 29, 1989
    Date of Patent: January 21, 1992
    Assignee: UOP
    Inventor: Brian H. Johnson
  • Patent number: 5053580
    Abstract: Metal oxide powders comprised of Cr(III) oxide, Ti(IV) oxide, V(V) oxide, or mixtures of these, or metal mixed oxides comprised of Cr(III) oxide and Ti(IV) oxide and V(V) oxide, or their mixtures. They have BET surfaces of 5-50m.sup.2 /g and mean particle diameters of 25-350 nm and are useful to increase conversion and selectivity in the manufacture of mono-olefins by catalytic dehydrogenation of saturated hydrocarbons. The metal oxide powders are produced from mixtures of the vaporized metal compounds chromyl chloride, titanium tetrachloride, and vanadyl chloride, in the presence of certain gases by laser pyrolysis.
    Type: Grant
    Filed: May 7, 1990
    Date of Patent: October 1, 1991
    Assignee: Veba Oel Aktiengesellschaft
    Inventors: Bernhard Schramm, Jurgen Kern, Harald Schwahn, August-Wilhelm Preuss, Klaus Gottlieb, Hartmut Bruderreck
  • Patent number: 5043511
    Abstract: Alkyl aromatic compounds may be prepared by reacting an aromatic compound such as benzene with an alkylating agent such as an olefin or alkyl halide in the presence of an alkylation catalyst. The alkylation catalyst of the present invention comprises a clay which has been coextruded with a multi-valent metal and preferably a metal selected from the group consisting of Groups IIIA, IIIB and IVB of the Periodic Table. The resultant extrudate is then impregnated with a dissimilar multi-valent metal selected from the above named groups followed by calcination to form the desired composite. By utiilzing this catalytic composite in an alkylation reaction it is possible to obtain improved yields of alkyl aromatic compounds which may then be used in the preparation of biodegradable detergents.
    Type: Grant
    Filed: November 13, 1989
    Date of Patent: August 27, 1991
    Assignee: UOP
    Inventors: Tamotsu Imai, Joseph A. Kocal
  • Patent number: 5043507
    Abstract: An alkyl-substituted hydrocarbon is prepared by alkylating an alkyl aromatic hydrocarbon having at least one hydrogen atom at an alpha-position in a side chain with an olefin in the presence of a solid base which is obtainable by reacting an alumina with an alkali metal carbonate and/or aluminate and an alkali metal amd/or its hydride in an inert gas atmosphere at a temperature of 180.degree. to 800.degree. C. as a catalyst.
    Type: Grant
    Filed: August 29, 1989
    Date of Patent: August 27, 1991
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Masami Fukao, Takuo Hibi, Kiyoshi Ikimi, Gohfu Suzukamo
  • Patent number: 5041432
    Abstract: Lanosterols substituted in the 14 and/or 15 position(s) which are active in inhibiting lanosta-8,24-dien-3.beta.-ol 14.alpha.-methyl-demethylase activity, suppressing 3-hydroxy-3-methylglutaryl coenzyme A reductase (HMGR) activity, decreasing cholesterol synthesis and reducing serum cholesterol levels are disclosed.
    Type: Grant
    Filed: September 28, 1990
    Date of Patent: August 20, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: James L. Gaylor, Paul R. Johnson, Soo S. Ko, Ronald L. Magolda, Simon H. Stam, James M. Trzaskos
  • Patent number: 5037997
    Abstract: A method of preparing 1-butene and/or hexenes resides in dimerization of ethylene and/or co-dimerization of ethylene and propylene in an organic solvent under an increased pressure and at a temperature of 0.degree. to 100.degree. C. in the presence of a complex organometallic catalyst. The catalyst contains titanium alcoholate of the formula Ti(OR.sup.1).sub.4, where R.sup.1 is an alkyl radical having from 1 to 8 carbon atoms or aryl, trialkylaluminium of the formula AlR.sup.2.sub.3, where R.sup.2 is an alkyl radical having from 1 to 6 carbon atoms, an organomagnesium compound of the formula MgR.sup.2.sub.2 and/or MgR.sup.3 X, where R.sup.3 is an alkyl radical having from 1 to 4 carbon atoms and X is Br, Cl, or I.
    Type: Grant
    Filed: December 18, 1989
    Date of Patent: August 6, 1991
    Assignees: Institut Khimicheskoi Fiziki an SSSR, Groznensky Filial Oppo, Po Stavropolpolimer
    Inventors: Viktor I. Zhukov, Gennady P. Belov, Galina S. Sergienko, Zinaida M. Dzhabieva, Saida R. Ivolgina, Natalya V. Kartasheva, Fridrikh S. Dyachkovsky, Sergei S. Ivanchev, Vladimir L. Proskurnin, Jury M. Petrov, Olga N. Reznikova
  • Patent number: 5034548
    Abstract: Lanosterols substituted in the 14 and/or 15 position(s) which are active in inhibiting lanosta-8,24-dien-3.beta.-ol 14.alpha.-methyl-demethylase activity, suppressing 3-hydroxy-3-methylglutaryl coenzyme A reductase (HMGR) activity, decreasing cholesterol synthesis and reducing serum cholesterol levels are disclosed.
    Type: Grant
    Filed: October 16, 1990
    Date of Patent: July 23, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: James L. Gaylor, Paul R. Johnson, Soo S. Ko, Ronald L. Magolda, Simon H. Stam, James M. Trzaskos
  • Patent number: 5030790
    Abstract: The production of butene-1 is effected by way of dimerization of ethylene in the presence of a catalytical system: titanium tetralakoxide-aluminium trialkyl in a hydrocarbon solvent, followed by rectification of the reaction mass formed in the dimerization in the presence of a compound selected from the group consisting of aliphatic mono- and dihydric alcohols, aliphatic ethers, cyclic ethers, aliphatic ketones, amides of carboxlic acids.
    Type: Grant
    Filed: March 10, 1989
    Date of Patent: July 9, 1991
    Inventors: Galina S. Sergienko, Viktor I. Zhukov, Gennady P. Belov, Fridrikh S. Dyachkovsky, Sergei S. Ivanchev, Anatoly I. Germashev, Jury M. Petrov, Valery I. Lazutin, Valery A. Yatsenko, Malik S. Gabutdinov
  • Patent number: 5030786
    Abstract: Aromatic conversion processes employing zeolite Y, zeolite omega and zeolite beta molecular sieve catalyst. A feed stock containing at least one aromatic compound and having water entrained therein is passed to a dehydration zone. In the dehydration zone, water is removed to provide a dehydrated feed stock of a water content no more than 100 ppm, preferably 50 ppm or less. The dehydrated feed stock is then supplied to the reaction zone containing the molecular sieve catalyst selected from the group consisting of zeolite Y, zeolite omega, and zeolite beta. The reaction zone is operated at temperature and pressure conditions to maintain the reactor contents in the liquid phase and also sufficient to cause the conversion reaction to proceed in the presence of the catalyst.
    Type: Grant
    Filed: June 23, 1989
    Date of Patent: July 9, 1991
    Assignee: Fina Technology, Inc.
    Inventors: Edwar S. Shamshoum, James T. Merrill
  • Patent number: 5026944
    Abstract: A process is described in which methane is reacted with acetylene in the presence of a solid acid catalyst containing fluoride to produce isobutene in high yields. The process may take place at room temperature or lower and atmospheric pressure. The conversion of acetylene typically approaches 100% and the methane conversion has been found to surpass stoichiometric requirements.
    Type: Grant
    Filed: December 20, 1989
    Date of Patent: June 25, 1991
    Assignee: Energy Mines and Resources Canada
    Inventors: Vincenza Allenger, Raj N. Pandey, Prasad Yarlagadda
  • Patent number: 5023252
    Abstract: The rate of absorption of drugs across skin and other body membranes such as mucous membranes and the blood brain barrier is enhanced by adding to the drug composition a compound which enhances the rate. This compound may be macrocyclic ester, diester, amide, diamide, amidine, diamidine, thioester, dithioester, thioamide, ketone or lactone. The macrocyclic ketone contains at least 12 carbon atoms.
    Type: Grant
    Filed: December 8, 1989
    Date of Patent: June 11, 1991
    Assignee: Conrex Pharmaceutical Corporation
    Inventor: Dean Hseih
  • Patent number: 5023388
    Abstract: Polyethylene waxes having a very narrow molecular weight distribution, high isotacticity, a narrow grain size distribution and a high bulk density are obtained by means of a catalyst comprising a metallocene and an aluminoxane, in the presence of small amounts of hydrogen during the polymerization.
    Type: Grant
    Filed: December 19, 1988
    Date of Patent: June 11, 1991
    Assignee: Hoechst Aktiengesellschaft
    Inventor: Hartmut Luker
  • Patent number: 5017539
    Abstract: A process for preparing a catalyst for the polymerization of butadiene to obtain a polymer containing a very high content of cis isomer in which a specified neodymium carboxylate, an aluminium hydrocarbyl or aluminium hydrocarbyl hydride and a source of halogen are contacted using a particular procedure.
    Type: Grant
    Filed: December 22, 1989
    Date of Patent: May 21, 1991
    Assignee: Enichem Elastomers Ltd.
    Inventors: Derek K. Jenkins, Peter J. Ansell
  • Patent number: 5015798
    Abstract: There is provided a process for the direct partial oxidation of methane with oxygen, whereby organic compounds comprising higher hydrocarbons including C.sub.5 + liquid hydrocarbons are produced. The catalyst used in this reaction may be a ZSM-5 catalyst. The process involves the use of an initial cofeed, such as propane, in admixture with the methane and oxygen to induce the formation of liquid hydrocarbons. As the reaction progresses, the flow of cofeed is shut off, and liquid hydrocarbons continue to be produced.
    Type: Grant
    Filed: December 21, 1989
    Date of Patent: May 14, 1991
    Assignee: Mobil Oil Corporation
    Inventors: Scott Han, Robert E. Palermo, Judy A. Pearson, Dennis E. Walsh
  • Patent number: 5012029
    Abstract: A mixture of organic compounds comprising a major amount of liquid hydrocarbons, mostly aromatic, is formed by the direct partial oxidation of methane in the presence of a ZSM-5 catalyst. The reaction conditions are substantially the same as those required for the direct homogeneous partial oxidation to methanol. However, liquid hydrocarbon formation depends on the presence of a small amount of an impurity such as propane or propylene in the feed; in the absence of such, only methanol is formed. With such modifier present, controls of reaction parameters, e.g., temperature, permits synthesis of both methanol and liquid hydrocarbons in desired proportions. Properly processed natural gas can serve to provide methane and at least part of the reaction modifier.
    Type: Grant
    Filed: October 16, 1989
    Date of Patent: April 30, 1991
    Assignee: Mobil Oil Corp.
    Inventors: Scott Han, Daniel J. Martenak, Robert E. Palermo, Dennis E. Walsh
  • Patent number: 5008479
    Abstract: A process for production of 2,6-dimethylnaphthalene is disclosed, comprising the steps: (1) an acylation step where p-tolyl sec-butyl ketone is produced from toluene, n-butene and carbon monoxide: (2) a hydrogenation step where the carbonyl group of the p-tolyl sec-butyl ketone is hydrogenated: and (3) a dehydrogenation and cyclization step where the hydrogenated product obtained above is subjected to dehydrogenation and cyclization to produce the desired 2,6-dimethylnaphthalene. The process enables efficiently producing a high quality or high purity 2,6-dimethylnaphthalene.
    Type: Grant
    Filed: July 5, 1989
    Date of Patent: April 16, 1991
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Takafumi Abe, Seiji Uchiyama, Takahiro Ojima, Koichi Kida
  • 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