Patents Examined by J. E. Evans
  • Branched perfluoroalkyl halides and preparation
    Patent number: 5105034
    Abstract: The present invention relates to new perfluoroalkyl halides and to their preparation by a process based on the thermodecomposition of perfluorocarbides in the presence of Cl.sub.2, Br.sub.2 and I.sub.2.
    Type: Grant
    Filed: May 29, 1990
    Date of Patent: April 14, 1992
    Assignee: Ausimont S.r.l.
    Inventors: Claudio Tonelli, Vito Tortelli
  • Vapor phase hydrogenation of carbon tetrachloride
    Patent number: 5105032
    Abstract: A process for the hydrodechlorination of carbon tetrachloride to produce chloroform and methylene chloride utilizes a supported platinum catalyst that is subjected to chloride pre-treatment. The platinum catalyst may be promoted with small amounts of metals such as tin. By-product production is decreased and duration of catalyst activity is improved by the process of this invention.
    Type: Grant
    Filed: October 4, 1990
    Date of Patent: April 14, 1992
    Assignee: The Dow Chemical Company
    Inventors: Michael T. Holbrook, A. Dale Harley
  • Process for the preparation of 3,4-dihalo-1,2-epoxybutanes
    Patent number: 5103028
    Abstract: Disclosed is a process for the preparation of 3,4-dichloro- and 3,4-dibromo-1,2-epoxybutane by the reaction of 3,4-epoxy-1-butane with chlorine or bromine in the presence of a quaternary ammonium or phosphonium halide compound. The reaction preferably is carried out by the addition of 3,4-epoxy-1-butane and chlorine or bromine to an organic, halogenation solvent containing chlorine or bromine and the quaternary compound.
    Type: Grant
    Filed: September 9, 1991
    Date of Patent: April 7, 1992
    Assignee: Eastman Kodak Company
    Inventors: Stephen N. Falling, Patricia Lopez-Maldonado
  • Olefin expoxidation using an oxorhenium porphyrin complex catalyst and an organic hydroperoxide
    Patent number: 5103027
    Abstract: Olefins are oxidized to epoxide compounds by contacting the olefins with organic hydroperoxides in the presence of oxorhenium porphyrin complex catalysts. High yields of epoxides are attained, particularly when the olefin substrate bears an aromatic substituent.
    Type: Grant
    Filed: July 23, 1991
    Date of Patent: April 7, 1992
    Assignee: Arco Chemical Technology, L.P.
    Inventors: Wilfred P. Shum, Haven S. Kesling, Jr.
  • Process for the production of epoxides
    Patent number: 5101051
    Abstract: Epoxides are prepared by reaction of compounds containing olefinic unsaturation, for example .alpha.-olefins, terpenes and steroids, with an aliphatic diperoxydicarboxylic acid. The diperoxydicarboxylic acid contains 2 to 16 carbon atoms and suitably at least 6 carbon atoms. The process gives a good epoxidation process and does not give rise to byproduct formation.
    Type: Grant
    Filed: May 2, 1991
    Date of Patent: March 31, 1992
    Assignee: Eka Nobel
    Inventors: Harriet Ericsson, Elina Sandberg, Eva Gottberg-Klingskog
  • Process for the preparation of intermediates
    Patent number: 5099040
    Abstract: A new process for the preparation of 1-chloro-2-(1-chloro-cyclopropyl)-3-(2-chloro-phenyl)-propan-2-ol of the formula ##STR1## and/or 2-(1-chloro-cyclopropyl)-2-(2-chloro-benzyl)-oxirane of the formula ##STR2## comprising a) reacting in a first step, 2-chloro-benzyl chloride of the formula ##STR3## with comminuted magnesium in the presence of a mixture of toluene and tetrahydrofuran, in which the ratio of toluene to tetrahydrofuran is between 65:35 and 95:5 parts by weight, at a temperature between 0.degree. C. and 100.degree. C.
    Type: Grant
    Filed: August 23, 1991
    Date of Patent: March 24, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Winfried Rosen, Paul-Christian Fiedler, Gotz Blume
  • Organoclay triphase catalysts
    Patent number: 5099054
    Abstract: In a method of carrying out organic conversions via heterogeneous phase transfer catalysis by contacting immiscible liquid phases containing respective substances capable of interacting, with a solid catalyst to promote the transfer of reactive species from one liquid phase to another, the improvement comprises employing as catalyst a cation exchanged form of a 2:1 layered silicate clay with layer charge densities in the range of above 0.4 to 2.0 containing an onium ion containing one or more alkyl hydrocarbon chains and maintaining the materials in emulsified form by having a sufficient chain length of an alkyl group relative to the charge density of the clay.
    Type: Grant
    Filed: February 14, 1991
    Date of Patent: March 24, 1992
    Assignee: Michigan State University
    Inventors: Thomas J. Pinnavaia, Chi-Li Lin
  • Process for the chlorination of methane
    Patent number: 5099084
    Abstract: A process is provided for the chlorination of methane using hydrogen chloride as a source of chlorine. The process includes reaction steps operated in tandem in separate zones first comprising the reaction of perchloroethylene with hydrogen chloride and oxygen in the presence of an oxychlorination catalyst to give hexachloroethane and water, and second comprising the vapor phase reaction of hexachloroethane with methane feedstock to produce chlorinated methane, perchloroethylene and hydrogen chloride.
    Type: Grant
    Filed: January 13, 1989
    Date of Patent: March 24, 1992
    Inventor: John E. Stauffer
  • Synthesis of glycerol from formaldehyde
    Patent number: 5097089
    Abstract: This invention relates to a process for synthesis of glycerol from formaldehyde, wherein formaldehyde under substantially anhydrous condition is self-condensed in a catalytic step is dihydroxyacetone which is separated from the self-condensation catalyst and hydrogenated catalytically to glycerol.The feature of the invention is to have less than 0.4% w/w of water in the self-condensation reaction mixture thereby improving the process to produce glycerol in commercially viable rates and yields.
    Type: Grant
    Filed: March 27, 1990
    Date of Patent: March 17, 1992
    Assignee: BP Chemicals Limited
    Inventors: Benjamin P. Gracey, Barry Hudson, Peter S. Williams
  • 1,1,1-trifluoro-2-hydroxy compound
    Patent number: 5097075
    Abstract: 1,1,1-Trifluoro-2-hydroxy-5-benzyloxy compounds represented by the following formula (I) and optical isomers thereof: ##STR1##The compounds of the present invention are R-form and S-form when X is --C.tbd.C-- and are trans-form and cis-form both of which have respectively R-form and S-form when X is --CH.dbd.CH-- or ##STR2## ##STR3## the compound of the present invention is ##STR4## The compounds of the present invention are useful for asymmetric introduction of trifluoromethyl group and molecular designing of biologically active substances, ferroelectric liquid crystal compounds and so on.
    Type: Grant
    Filed: October 10, 1990
    Date of Patent: March 17, 1992
    Assignee: Showa Shell Sekiyu Kabushiki Kaisha
    Inventor: Tomoya Kitazume
  • Process for the chlorination of ethane
    Patent number: 5097083
    Abstract: A process is provided for the chlorination of ethane using hydrogen chloride, chlorine or mixtures as the chlorinating agent. The process includes reaction steps operated in tandem in separate zones first comprising the reaction of perchloroethylene with hydrogen chloride and oxygen in the presence of an oxychlorination catalyst to give hexachloroethane and water, and second comprising the vapor phase reaction of hexachloroethane with ethane feedstock to produce chlorinated ethanes, chlorinated ethylenes, and hydrogen chloride.
    Type: Grant
    Filed: January 13, 1989
    Date of Patent: March 17, 1992
    Inventor: John E. Stauffer
  • Hydrodechlorination of higher chloromethanes
    Patent number: 5097081
    Abstract: The highly chlorinated methanes, e.g., carbon tetrachloride, are improvedly dechlorinated by reacting same with hydrogen in the presence of oxygen or an oxygen-containing gas, e.g., air, and a catalytically effective amount of a metal of the copper or precious metal Groups of the Periodic Table, typically in the form of a fixed or fluidized bed thereof, and advantageously in the gaseous phase.
    Type: Grant
    Filed: May 3, 1991
    Date of Patent: March 17, 1992
    Assignee: Atochem
    Inventors: Yves Correia, Joseph Nowocien
  • Catalyzed vapor phase process for making alcohols
    Patent number: 5095156
    Abstract: A catalyzed, continuous vapor phase process to convert a C.sub.2 or higher alcohol and, optionally, one or more C.sub.1 or higher alcohols, for example methanol and ethanol, to a mixture containing at least one higher molecular weight alcohol, for example, isobutanol, over a catalyst which is essentially magnesium oxide. The process also may have a lower aldehyde and/or ketone in the feed.
    Type: Grant
    Filed: May 20, 1991
    Date of Patent: March 10, 1992
    Assignee: Amoco Corporation
    Inventors: Cecelia A. Radlowski, Gary P. Hagen
  • Preparation of functionalized alkynes having internal triple bonds
    Patent number: 5093536
    Abstract: Functional internal alkynes are conveniently and economically prepared by dehydrohalogenating a dibromide with an alkali metal hydroxide in the presence of a phase transfer catalyst.
    Type: Grant
    Filed: November 8, 1989
    Date of Patent: March 3, 1992
    Assignee: Kenkel Research Corporation
    Inventors: James M. Renga, Alan G. Olivero, Mark Bosse
  • Process for the preparation of saturated alcohols from aldehydes
    Patent number: 5093534
    Abstract: A process for the preparation of saturated alcohols from aldehydes is disclosed. The hydrogenation of saturated and unsaturated aldehydes to alcohols can be carried out over catalysts containing cooper and nickel. In the present process, the selectivity of the alcohol preparation is further improved by a combination of an alkaline copper catalyst and a nickel-containing catalyst whose carrier material has acidic centers of a certain acid strength H.sub.o.
    Type: Grant
    Filed: June 28, 1991
    Date of Patent: March 3, 1992
    Assignee: Huels Aktiengesellschaft
    Inventors: Gerhard Ludwig, Lothar Fischer, Dieter Hess
  • Method for the manufacture of 1,3-propanediol
    Patent number: 5093537
    Abstract: 1,3-Propanediol is manufactured by the hydration of acrolein in an aqueous solution over a fully hydrated, alumina-bound zeolite with a pore size >5 angstroms to form 3-hydroxypropanal and hydrogenation of the 3-hydroxypropanal typically in an aqueous solution in the presence of a nickel catalyst.
    Type: Grant
    Filed: July 24, 1991
    Date of Patent: March 3, 1992
    Assignee: Hoechst Celanese Corporation
    Inventors: Jerry D. Unruh, Debra A. Ryan, Ioan Nicolau
  • Catalytic hydrogenation process
    Patent number: 5093535
    Abstract: A liquid phase catalytic hydrogenation process is described in which an organic feedstock, such as an aldehyde containing from 2 to about 20 carbon atoms, is contracted with hydrogen in the presence of a solid hydrogenation catalyst under hydrogenation conditions to produce a hydrogenation product, such as the corresponding alcohol containing from 2 to about 20 carbon atoms, which process comprises passing a feed solution of the organic feedstock in an inert diluent therefor downwardly in co-current with a hydrogen-containing gas through a hydrogenation zone containing a bed of a particulate hydrogenation catalyst whose particles substantially all lie in the range of from about 1.
    Type: Grant
    Filed: June 4, 1990
    Date of Patent: March 3, 1992
    Assignee: Davy McKee (London) Limited
    Inventors: George E. Harrison, Alan J. Dennis
  • Process for producing N-phosphonomethylglycine
    Patent number: 5091561
    Abstract: A process for producing N-phosphonomethylglycine by the oxidation of N-phosphonomethyliminodiacetic acid using a molecualr oxygen-containing gas in the presence of a transition metal catalyst.
    Type: Grant
    Filed: June 4, 1990
    Date of Patent: February 25, 1992
    Assignee: Monsanto Company
    Inventors: Dennis P. Riley, Willie J. Rivers, Jr.
  • Process for preparing 1,1,1-trifluoro-2,2-dichloroethane by hydrofluorination in the presence of catalysts
    Patent number: 5091601
    Abstract: A process for preparing 1,1,1-trifluoro-2,2-dichloroethane by hydrofluorination, in the gas phase, of perchloroethylene in the presence of a catalyst comprising chrome oxides supported on AlF.sub.3 in the gamma and/or beta form.
    Type: Grant
    Filed: September 19, 1990
    Date of Patent: February 25, 1992
    Assignee: Austimont S.p.A.
    Inventors: Diego Carmello, Giorgio Guglielmo
  • Di-tert-butyl(hydroxy)phenylthio substituted hydroxamic acid derivatives
    Patent number: 5091569
    Abstract: (Di-tert-butylhydroxyphenyl)thio substituted hydroxamic acid derivatives of the formula: ##STR1## wherein X is straight or branched C.sub.1 to C.sub.15 alkylene which may be attached to Y through phenylene, provided that X is not n-butylmethylene; Y is CO--N(OH) or N(OH)--CO; and R is hydrogen or straight or branched C.sub.1 to C.sub.9 alkyl, C.sub.3 to C.sub.9 cycloalkyl, aryl, or aralkyl, provided that R is not hydrogen when Y--R is N(OH)--CO--R; or a pharmaceutically acceptable salt thereof; useful in treating arteriosclerosis, ulcer, inflammation, allergy, or the like.
    Type: Grant
    Filed: June 19, 1990
    Date of Patent: February 25, 1992
    Assignee: Shionogi & Co., Ltd.
    Inventors: Saichi Matsumoto, Takuji Mizui, Masami Doteuchi