Patents Examined by James Saba
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Patent number: 5185484Abstract: 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: GrantFiled: December 26, 1989Date of Patent: February 9, 1993Assignee: Mobil Oil CorpInventors: Kenneth J. Del Rossi, Garry W. Kirker, Albin Huss, Jr.
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Patent number: 5124497Abstract: 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: GrantFiled: October 11, 1989Date of Patent: June 23, 1992Assignee: Mobil Oil CorporationInventors: Ralph M. Dessau, Ernest W. Valyocsik, Randall D. Partridge
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Patent number: 5118898Abstract: 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: GrantFiled: March 14, 1990Date of Patent: June 2, 1992Assignees: The Broken Hill Proprietary Company Limited, Commonwealth Scientific & Industrial Research OrganizationInventors: Ralph J. Tyler, James H. Edwards, Peter J. Jackson
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Patent number: 5082989Abstract: 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: GrantFiled: December 29, 1989Date of Patent: January 21, 1992Assignee: UOPInventor: Brian H. Johnson
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Patent number: 5053580Abstract: 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: GrantFiled: May 7, 1990Date of Patent: October 1, 1991Assignee: Veba Oel AktiengesellschaftInventors: Bernhard Schramm, Jurgen Kern, Harald Schwahn, August-Wilhelm Preuss, Klaus Gottlieb, Hartmut Bruderreck
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Patent number: 5043511Abstract: 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: GrantFiled: November 13, 1989Date of Patent: August 27, 1991Assignee: UOPInventors: Tamotsu Imai, Joseph A. Kocal
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Patent number: 5043507Abstract: 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: GrantFiled: August 29, 1989Date of Patent: August 27, 1991Assignee: Sumitomo Chemical Company, LimitedInventors: Masami Fukao, Takuo Hibi, Kiyoshi Ikimi, Gohfu Suzukamo
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Patent number: 5041432Abstract: 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: GrantFiled: September 28, 1990Date of Patent: August 20, 1991Assignee: E. I. Du Pont de Nemours and CompanyInventors: James L. Gaylor, Paul R. Johnson, Soo S. Ko, Ronald L. Magolda, Simon H. Stam, James M. Trzaskos
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Patent number: 5037997Abstract: 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: GrantFiled: December 18, 1989Date of Patent: August 6, 1991Assignees: Institut Khimicheskoi Fiziki an SSSR, Groznensky Filial Oppo, Po StavropolpolimerInventors: 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
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Patent number: 5034548Abstract: 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: GrantFiled: October 16, 1990Date of Patent: July 23, 1991Assignee: E. I. Du Pont de Nemours and CompanyInventors: James L. Gaylor, Paul R. Johnson, Soo S. Ko, Ronald L. Magolda, Simon H. Stam, James M. Trzaskos
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Patent number: 5030786Abstract: 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: GrantFiled: June 23, 1989Date of Patent: July 9, 1991Assignee: Fina Technology, Inc.Inventors: Edwar S. Shamshoum, James T. Merrill
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Patent number: 5030790Abstract: 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: GrantFiled: March 10, 1989Date of Patent: July 9, 1991Inventors: 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
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Patent number: 5026944Abstract: 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: GrantFiled: December 20, 1989Date of Patent: June 25, 1991Assignee: Energy Mines and Resources CanadaInventors: Vincenza Allenger, Raj N. Pandey, Prasad Yarlagadda
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Patent number: 5023252Abstract: 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: GrantFiled: December 8, 1989Date of Patent: June 11, 1991Assignee: Conrex Pharmaceutical CorporationInventor: Dean Hseih
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Patent number: 5023388Abstract: 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: GrantFiled: December 19, 1988Date of Patent: June 11, 1991Assignee: Hoechst AktiengesellschaftInventor: Hartmut Luker
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Patent number: 5017539Abstract: 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: GrantFiled: December 22, 1989Date of Patent: May 21, 1991Assignee: Enichem Elastomers Ltd.Inventors: Derek K. Jenkins, Peter J. Ansell
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Patent number: 5015798Abstract: 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: GrantFiled: December 21, 1989Date of Patent: May 14, 1991Assignee: Mobil Oil CorporationInventors: Scott Han, Robert E. Palermo, Judy A. Pearson, Dennis E. Walsh
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Patent number: 5012029Abstract: 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: GrantFiled: October 16, 1989Date of Patent: April 30, 1991Assignee: Mobil Oil Corp.Inventors: Scott Han, Daniel J. Martenak, Robert E. Palermo, Dennis E. Walsh
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Patent number: 5008479Abstract: 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: GrantFiled: July 5, 1989Date of Patent: April 16, 1991Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Takafumi Abe, Seiji Uchiyama, Takahiro Ojima, Koichi Kida
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Patent number: 5006518Abstract: 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: GrantFiled: December 30, 1988Date of Patent: April 9, 1991Assignee: Roussel UclafInventors: Martine Moguilewsky, Lucien Nedelec, Francois Nique, Daniel Philibert