Patents Examined by Howard T. Mars
  • Catalytic process
    Patent number: 5137924
    Abstract: Methanol synthesis over a catalyst derived from an alloy of copper and/or a platinum group metal and a highly oxidizable metal such as a rare earth metal can be carried out at unusually low temperatures such as 70.degree. C. and using synthesis gas deficient in hydrogen. The process life of the catalyst is no longer if the starting alloy contains a further metal such as aluminum or manganese. The synthesis gas should preferably be very pure and substantially free of carbon dioxide and water vapor. The process can be advantageously carried out using the catalyst suspended in an inert liquid.
    Type: Grant
    Filed: September 3, 1991
    Date of Patent: August 11, 1992
    Assignee: Imperial Chemical Industries PLC
    Inventors: Glyn D. Short, James R. Jennings
  • Process for the preparation of alkyl-halides
    Patent number: 5138110
    Abstract: A process for preparing lower alkyl-halides from the reaction of HX and the corresponding lower alcohol, wherein X represents a halogen atom, comprises continuously feeding HX and a lower alcohol to a reactor maintaining the instantaneous molar ratio of HX to the alcohol greater than 3, and continuously distilling off lower alkyl-halide and water from the reactor, continuously separating the lower alkyl-halide and water and recycling part of the said water to the distillation column to abate HX distillation from the reactor. High acid concentration and temperatures are maintained to obtain high yields and rapid conversion of alkanols.
    Type: Grant
    Filed: August 13, 1991
    Date of Patent: August 11, 1992
    Assignee: Bromine Compounds Ltd.
    Inventors: Jeane Segall, Leonard M. Shorr
  • 14.alpha.,17.alpha.-ethanoestratrienes
    Patent number: 5134136
    Type: Grant
    Filed: May 13, 1991
    Date of Patent: July 28, 1992
    Assignee: Schering Aktiengesellschaft
    Inventors: Gerald Kirsch, Henry Laurent, Rudolf Wiechert, Sybille Beier, Walter Elger, James R. Bull, Gunter Neef
  • Process for producing C.sub.3 -C.sub.4 monoalkylchlorides
    Patent number: 5132476
    Abstract: The vaporous reaction product from the continuous reaction of C.sub.3 -C.sub.4 monoalkanols with hydrogen chloride is removed, condensed, and split into a light organic phase and a heavy aqueous phase. The heavy aqueous phase is immediately distilled yielding HCl-containing reaction water at the bottom of the column and an alcohol stream at the head of the column from where it is returned to the synthesis. The light organic phase is washed with water, dried and, optionally, distilled. The water from this washing operation is neutralized, stripped off in order to remove dissolved organic constituents, and removed as waste water from the system.
    Type: Grant
    Filed: June 24, 1991
    Date of Patent: July 21, 1992
    Assignee: RWE-DEA Aktiengesellschaft fuer Mineraloel und Chemie
    Inventors: Gunther Osterburg, Wolfgang Reith, Karl-Heinz Gluzek
  • Process for the conversion of normal alkenes to tertiary alkyl ethers
    Patent number: 5132467
    Abstract: A process is disclosed for the production of tertiary alkyl ethers wherein linear olefins, particularly n-butene, are isomerized in the vapor phase at high temperature in contact with shape selective metallosilicate catalyst to produce iso-olefin vapor, particularly isobutene. The vaporous iso-butene is then etherified with alkanol to provide alkyl tert-alkyl ether such as MTBE. Unreacted iso-olefin and/or linear olefin and product ether are separated by fractionation and unreacted olefin components recycled. Fractionation of the vapor phase etherification product is carried out by using the fresh liquid linear olefin feedstream as a reflux stream to the fractionator.
    Type: Grant
    Filed: March 6, 1991
    Date of Patent: July 21, 1992
    Assignee: Mobil Oil Corporation
    Inventors: Werner O. Haag, Mohsen N. Harandi, Hartley Owen
  • Bichromophoric methine and azamethine dyes and process for transferring them
    Patent number: 5132438
    Abstract: Bichromophoric methine and azamethine transfer dyes have the formulaZ.sup.2 --Z.sup.1 --LY.sup.1 --Y.sup.2whereL is a bridge member which does not permit any conjugation of .pi.-electrons between Z.sup.1 and Y.sup.1,Y.sup.1 and Z.sup.1 are each independently of the other aminophenylene, which may be benzofused, or heterocyclyl andY.sup.2 and Z.sup.2 are each independently of the other benzoquinoeiminyl, which may be benzofused, or heterocyclyl.
    Type: Grant
    Filed: February 4, 1991
    Date of Patent: July 21, 1992
    Assignee: BASF Aktiengesellschaft
    Inventors: Volker Bach, Karl-Heinz Etzbach, Ruediger Sens
  • Cobalt-titania catalysts, process utilizing these catalysts for the preparation of hydrocarbons from synthesis gas, and process for the preparation of said catalysts (C-2448)
    Patent number: 5128377
    Abstract: A supported particulate cobalt catalyst is formed by dispersing cobalt, alone or with a metal promoter, particularly rhenium, as a thin catalytically active film upon a particulate titania or titania-containing support, especially one wherein the rutile:anatase ratio of the support is at least about 3:2. This catalyst can be used to convert an admixture of carbon monoxide and hydrogen to a distillate fuel constituted principally of an admixture of linear paraffins and olefins, particularly a C.sub.10 + distillate, at high productivity, with low methane selectivity. A process is also disclosed for the preparation of these catalysts.
    Type: Grant
    Filed: April 23, 1990
    Date of Patent: July 7, 1992
    Assignee: Exxon Research and Engineering Company
    Inventors: William C. Behrmann, Charles H. Mauldin, Kym B. Arcuri
  • Alkoxylation of active hydrogen compounds
    Patent number: 5126493
    Abstract: Alkoxylates of active hydrogen compounds having a peaked molecular weight distribution are prepared by reacting the active hydrogen compound with an alkylene oxide of from 2 to 4 carbon atoms using iron oxides as alkoxylation catalysts.
    Type: Grant
    Filed: April 5, 1991
    Date of Patent: June 30, 1992
    Inventors: Wolfgang Hoelderich, Jochen Houben, Gerhard Wolf, Michael G. Kinnaird
  • Catalyst for conversion of synthesis gas into hydrocarbons
    Patent number: 5126377
    Abstract: Processes for converting synthesis gas into hydrocarbons by passing the synthesis gas over a catalyst, and catalysts suitable for use in such processes. The catalysts include cobalt supported on ZSM-5 type zeolites and they also include chromium.
    Type: Grant
    Filed: September 10, 1990
    Date of Patent: June 30, 1992
    Assignee: The Broken Hill Proprietary Company Limited
    Inventor: Sandra Bessell
  • Catalyst and process for the preparation of trifluoromethyltoluenes
    Patent number: 5126497
    Abstract: A partially deactivated reduction catalyst is prepared by reacting palladium on alumina catalyst with benzotrifluoride in an amount of 0.1 to 10.0 millimoles of benzotrifluoride per gram of alumina and hydrogen in an amount ranging from 10 to 2000 moles of hydrogen per mole of benzotrifluoride at a temperature of 200.degree. C. to 300.degree. C. for 30 minutes to 2 hours. The catalyst is useful for the reduction of trifluoromethylbenzonitriles and trifluoromethylbenzylamines to produce the corresponding trifluoromethyltoluenes in high yields. The catalyst is also useful in other hydrogen reduction reactions, e.g., for conversion of o-chlorobenzonitrile, o-chlorobenzylamine and mandelonitrile to toluene and for conversion of phenethylamine to ethylbenzene.
    Type: Grant
    Filed: June 21, 1991
    Date of Patent: June 30, 1992
    Assignee: Occidental Chemical Corporation
    Inventors: Ronald F. Spohn, Raymond T. Olczak
  • Autothermal steam reforming process
    Patent number: 5122299
    Abstract: Synthesis gases are produced by reaction of steam, oxidant, and a major portion of fresh hydrocarbon feed in an exothermic catalytic reforming zone to a first reformed gas having very low methane content. The balance of the fresh feed is reacted with steam in an endothermic catalytic reforming zone to a second reformed gas having a low methane content. The first and second reformed gases are combined and passed in indirect heat exchange with reactants in the endothermic reforming zone to provide all of the heat required therein and are then recovered as product synthesis gases.
    Type: Grant
    Filed: March 14, 1991
    Date of Patent: June 16, 1992
    Assignee: The M. W. Kellogg Company
    Inventor: Joseph R. LeBlanc
  • Removal of nitrogenous components of a hydrocarbon feedstream
    Patent number: 5120881
    Abstract: A catalytic reaction process which involves exposing a hydrocarbon feed including nitrogenous contaminants as well as dialkyl sulfides to a material capable of adsorbing the nitrogenous contaminants as well as dialkyl sulfides from the feed before introducing the stream substantially devoid of nitrogenous contaminants and dimethyl sulfide into a feed zone of a reactor; contacting the hydrocarbon stream with a catalyst material in the reaction zone; and catalytically reacting the hydrocarbon stream under conditions which favor forming a reaction product and inhibiting reaction of nitrogenous contaminants and dimethyl sulfide with the catalyst material.
    Type: Grant
    Filed: March 30, 1990
    Date of Patent: June 9, 1992
    Assignee: Exxon Chemical Patents Inc
    Inventors: Daniel D. Rosenfeld, John D. Y. Ou
  • Minimizing deactivation of ether synthesis catalyst
    Patent number: 5118871
    Abstract: A method for producing alkyl tertiary alkyl ether involves supplying a feed including isoolefins, alcohols, and dialkyl sulfides into a feed zone of a reactor; contacting the feed with a catalyst material in the reaction zone; and catalytically reacting the isooolefins and alcohols under conditions which favor forming resultant ether and inhibiting reaction of dialkyl sulfides with the catalyst material.
    Type: Grant
    Filed: January 24, 1991
    Date of Patent: June 2, 1992
    Assignee: Exxon Chemical Patents Inc
    Inventors: John J. Cikut, Robert C. Michaelson, Dan E. Hendriksen, Terry A. Fons, Di-Yi Ou, Daniel D. Rosenfeld
  • Process for conducting heterogeneous chemical reactions
    Patent number: 5118872
    Abstract: There is provided a new process for conducting heterogeneous chemical reactions in which a particulate catalyst is slurried in one of the reactant streams and fed into a distillation column reactor in a distillation reaction zone. The distillation reaction zone contains inert packing which provides the distillation structure for separation. The slurried catalyst trickles downward through the inert packing and is removed with the bottoms and separated therefrom for regeneration or replacement.
    Type: Grant
    Filed: April 4, 1991
    Date of Patent: June 2, 1992
    Assignee: Chemical Research & Licensing Company
    Inventors: Lawrence A. Smith, Jr., John R. Adams
  • Polymerizing tetrahydrofuran to produce polytetramethylene ether glycol using a modified fluorinated resin catalyst containing sulfonic acid groups
    Patent number: 5118869
    Abstract: A catalyst and process for preparing it and its use in polymerizing tetrahydrofuran to produce polytetramethylene ether glycol ether are disclosed. The catalyst is a blend of a fluorinated resin containing sulfonic acid groups and a fluorinated resin containing carboxylic acid groups. The catalyst is partially dried to contain from 1,000 to 2,000 ppm water, so that when it is used to polymerize tetrahydrofuran, the product polytetramethylene ether glycol will have a number average molecular weight of from 250 to 4,000.
    Type: Grant
    Filed: February 13, 1991
    Date of Patent: June 2, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Suriyanarayan Dorai, Gerfried Pruckmayr, Marianne Marsi, Willard L. Quon
  • Process for isomerization of hydrochlorofluorocarbons
    Patent number: 5118887
    Abstract: A partially fluorinated alumina catalyst having a determined component, which is obtained by calcining an Al.sub.2 O.sub.3.nH.sub.2 O(n=0 to 3) containing fibril of polytetrafluoroethylene, provides an excellent catalyst for the isomerization of HCFCs.
    Type: Grant
    Filed: March 28, 1991
    Date of Patent: June 2, 1992
    Assignee: DuPont-Mitsui Fluorochemicals Co., Ltd.
    Inventors: Susumu Okazaki, Masatsune Ogura, Yasunobu Mochizuki
  • Syngas conversion catalyst, production and use thereof
    Patent number: 5118891
    Abstract: A composition for use after reductive activation as a catalyst in the conversion of synthesis gas to hydrocarbons, the composition having formula: Ru.sub.z A.sub.b CeO.sub.
    Type: Grant
    Filed: July 30, 1991
    Date of Patent: June 2, 1992
    Assignee: The British Petroleum Company p.l.c.
    Inventors: Graham Butler, Malcolm P. Heyward
  • Process for treating methyl bromide materials
    Patent number: 5118890
    Abstract: This invention concerns the decolorizing and/or deacidifying of methyl bromide materials by contacting same with zinc.
    Type: Grant
    Filed: May 29, 1990
    Date of Patent: June 2, 1992
    Assignee: Ethyl Corporation
    Inventor: Bonnie G. McKinnie
  • Selective fixed-bed fischer-tropsch synthesis with high surface area Cu and K promoted, iron/manganese spinels
    Patent number: 5118715
    Abstract: Pelletized, high surface area, Cu and Group IA or IIA dual metal promoted Mn-Fe spinels which are reduced and operated in a fixed-bed reactor provide exceptionally high catalytic activity and selectivity in the conversion of CO/H.sub.2 to high molecular weight hydrocarbons. These copper and Group IA or IIA metal promoted iron-manganese catalysts maintain good activity and selectivity to C.sub.5 + hydrocarbons, and give low selectivity to CO2.
    Type: Grant
    Filed: August 31, 1990
    Date of Patent: June 2, 1992
    Assignee: Exxon Research and Engineering Company
    Inventors: Enrique Iglesia, Stuart L. Soled, Rocco A. Fiato, Joseph E. Baumgartner
  • Alkoxylation process catalyzed by rare earth and phosphorus-containing xerogels
    Patent number: 5118870
    Abstract: Alkylene oxide adducts of organic compounds having active hydrogen atoms are prepared by a process which comprises contacting and reacting an alkylene oxide reactant comprising one or more vicinal alkylene oxides with an active hydrogen containing reactant comprising one or more compounds having active hydrogen atoms in the presence of a catalytically effective amount of a xerogel comprising one or more compounds comprising a rare earth element and phorphorus. The product alkoxylates are known to be useful, for instance, as nonionic surfactants, wetting and emulsifying agents, solvents, and chemical intermediates.
    Type: Grant
    Filed: April 23, 1990
    Date of Patent: June 2, 1992
    Assignee: Shell Oil Company
    Inventor: Richard A. Kemp