Patents Examined by J. E. Evans
  • Patent number: 5162593
    Abstract: TBA is prepared by a process wherein isobutane is continuously oxidized to a TBA/TBHP mixture, TBA is recovered from the mixture and TBHP is recycled to the isobutane oxidation step wherein it is converted to TBA at the isobutane oxidation conditions.
    Type: Grant
    Filed: November 25, 1991
    Date of Patent: November 10, 1992
    Assignee: Arco Chemical Technology, L.P.
    Inventors: Gennaro J. Maffia, John C. Jubin
  • Patent number: 5157168
    Abstract: An improved process for the production of fatty alcohols is provided. The fatty alcohols are produced by hydrogenation of lower alkyl esters, especially methyl esters, of fatty acids derived from natural triglycerides, under conditions which minimize formation of by-product alkanes and ethers. The hydrogenation is followed by refining of any resulting ester-containing hydrogenation product to produce a substantially ester free fatty alcohol.
    Type: Grant
    Filed: August 12, 1991
    Date of Patent: October 20, 1992
    Assignee: Davy McKee (London) Limited
    Inventors: Martyn Wilmott, George E. Harrison, John Scarlett, Michael A. Wood, Donald H. McKinley
  • Patent number: 5155241
    Abstract: Styrene oxide is prepared by reacting styrene and hydrogen peroxide in a heterogenous system in the presence of a bis(tri-n-alkyltinoxy) molybdic acid and an inorganic anion.
    Type: Grant
    Filed: October 7, 1991
    Date of Patent: October 13, 1992
    Assignee: Tokai Denka Kogyo Kabushiki Kaisha
    Inventors: Keiichi Nishibe, Seiichi Rengakuji, Masami Inoue, Osami Ohura, Hirohisa Nitoh
  • Patent number: 5149891
    Abstract: The present invention relates to a method for preparing a pitch fluoride, which comprises reacting pitch with fluorine in a fluorine type inert medium.
    Type: Grant
    Filed: April 10, 1991
    Date of Patent: September 22, 1992
    Assignee: Osaka Gas Company Limited
    Inventors: Takeshi Morimoto, Mikio Sasabe, Toshiyuki Maeda, Hiroyuki Fujimoto
  • Patent number: 5149843
    Abstract: Conjugated diene compounds of the general formula: ##STR1## which are industrially advantageous intermediates for preparing sarcophytol A useful as an anticarcinogenic promotor or antitumor agent are provided.
    Type: Grant
    Filed: June 7, 1991
    Date of Patent: September 22, 1992
    Assignee: Mitsubishi Kasei Corporation
    Inventors: Hisao Takayanagi, Yasunori Kitano, Yasuhiro Morinaka
  • Patent number: 5145974
    Abstract: A continuous process for producing nitratoalkyl-substituted cyclic ethers which consists of (a) cocurrently mixing a stream of N.sub.2 O.sub.5 and a stream of a hydroxyalkyl-substituted cyclic ether each dissolved in an inert organic solvent, followed by (b) rapidly separating the nitric acid and nitratoalkyl coproducts before they can react together to rupture the ether ring. Step (b) is conveniently performed by quenching the product stream within approximately 15 seconds of its formation, in a basic aqueous solution into which the nitric acid is transferred from the organic phase and is neutralized. Examples of products which may be prepared by this process are nitratoalkyl-substituted oxiranes and oxetanes.
    Type: Grant
    Filed: March 22, 1991
    Date of Patent: September 8, 1992
    Assignee: The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Northern Ireland
    Inventors: Norman C. Paul, Ross W. Millar, Peter Golding
  • Patent number: 5146001
    Abstract: In the preparation of benzyl ketones of the formula ##STR1## a benzyl chloride of the formula ##STR2## is reacted with an acid chloride of the formulaR.sup.6 --CO--Cl (III)a) in a first stage with an excess of zinc powder in the presence of a diluent at a temperature between 80.degree. C. and 200.degree. C. under an inert gas atmosphere, and separating off the excess zinc powder, thereby to obtain a benzyl derivative of the formula ##STR3## and b) in a second stage reacting the benzyl derivative of the formual (IV) with an acid chloride of the formula (III) in the presence of a palladium catalyst and in the presence of a diluent at a temperature between 0.degree. C. and 150.degree. C. under an inert gas atmosphere.
    Type: Grant
    Filed: June 3, 1991
    Date of Patent: September 8, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Thomas Himmler, Udo Kraatz, Wolfgang Kramer, Klaus Stroech
  • Patent number: 5146015
    Abstract: The present invention provides a class of hydrochlorofluorocarbons having a tertiary structure, 5 carbon atoms, 1 chlorine atom, 6 to 8 fluorine atoms, and OH rate constants from about 8 to about 15 cm.sup.3 /molecule/sec.times.10.sup.-14. The hydrochlorofluorocarbons are useful as solvents and blowing agents.
    Type: Grant
    Filed: September 27, 1991
    Date of Patent: September 8, 1992
    Assignee: Allied-Signal Inc.
    Inventor: Chen C. Li
  • Patent number: 5146020
    Abstract: Trifluoromethane or monochlorodifluoromethane and carbon tetrachloride are converted to trichloromonofluoromethane, dichlorodifluoromethane and chloroform using a catalyst of activated aluminum and magnesium oxides.
    Type: Grant
    Filed: August 8, 1990
    Date of Patent: September 8, 1992
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Charles G. Rudershausen
  • Patent number: 5146018
    Abstract: A process for the hydrogenolysis and/or dehydrohalogenation of fluorohalocarbons and/or fluorohalohydrocarbons by reacting the fluorohalocarbons and/or fluorohalohydrocarbons with a source of hydrogen in the presence of a catalyst, the improvement comprising utilizing a rhenium-containing catalyst, which may, optionally, contain at least one Group VIII metal and may, optionally, be supported.
    Type: Grant
    Filed: June 26, 1991
    Date of Patent: September 8, 1992
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Carl S. Kellner, V. N. Mallikarjuna Rao, Frank J. Weigert
  • Patent number: 5142067
    Abstract: A process for hydrogenating feeds into their corresponding alcohols by contact with a coprecipitated catalyst comprising copper, aluminum, and a metal (X) selected from the group consisting of magnesium, zinc, titanium, zirconium, tin, nickel, cobalt and mixtures thereof; that has been reduced with an increasing temperature during the reduction.
    Type: Grant
    Filed: November 5, 1991
    Date of Patent: August 25, 1992
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Richard W. Wegman, David R. Bryant
  • Patent number: 5137921
    Abstract: There is provided an inhibitory agent of an increase in blood sugar level, comprising conduritol A of the formula(I): ##STR1## or a derivative thereof, as an active component.
    Type: Grant
    Filed: July 26, 1991
    Date of Patent: August 11, 1992
    Assignee: Dai-Nippon Sugar Mfg. Co., Ltd.
    Inventors: Ituo Kensho, Fumio Yamashita, Toshikazu Nagai, Tadashi Fujimoto, Yoshihisa Nakano, Hideki Tukimura
  • Patent number: 5138105
    Abstract: A lower alcohol is recovered from a mixed liquid thereof with water, derived from a vapor drying procedure for a water-wetted article, for example, a water-washed lens or semiconductor wafer, by feeding the mixed liquid of a lower alcohol with water from the vapor drying procedure to a vaporizer; vaporizing the mixed liquid; feeding the mixed vapor into a gas-separating module comprising at least one gas-separating membrane, for example, composed of a aromatic polyimide hollow fiber, which allows a selective permeation of water vapor from a feed side to a permeated side therethrough, withdrawing a non-permeated vapor fraction containing the lower alcohol in an increased concentration from the feed side, and converting the vapor fraction to a high purity lower alcohol liquid by cooling, while discharging a permeated vapor fraction containing water in an increased concentration from the permeated side.
    Type: Grant
    Filed: October 18, 1991
    Date of Patent: August 11, 1992
    Assignees: Ube Industries, Ltd., M. Watanabe & Co., Ltd.
    Inventors: Masao Ninomiya, Masao Kikuchi, Masaru Umeda, Motojuro Yamaya
  • Patent number: 5138077
    Abstract: Disclosed is a process for the selective epoxidation of olefins, including diolefins, having more than 2 carbon atoms by the catalytic oxidation of such an olefin in the presence of a supported, thallium-promoted, silver catalyst.
    Type: Grant
    Filed: July 29, 1991
    Date of Patent: August 11, 1992
    Assignee: Eastman Kodak Company
    Inventors: John R. Monnier, Peter J. Muehlbauer
  • Patent number: 5138106
    Abstract: An improved process for refining alcohols produced by hydrogenation of esters wherein the crude hydrogenation product still contains a minor amount of unconverted ester starting material. In one embodiment, the process includes a method for recovering fatty alcohol or alcohols from a fatty alcohol fraction containing a major molar amount of at least one fatty alcohol and a minor molar amount of at least one lower alkyl fatty acid ester. In another embodiment, there is provided a process for the production of fatty alcohols which comprises, in addition to other steps, hydrogenating a lower alkyl fatty acid ester to yield a mixture of a lower alkanol, a fatty alcohol fraction and a minor amount of unreacted lower alkyl fatty acid ester.
    Type: Grant
    Filed: August 12, 1991
    Date of Patent: August 11, 1992
    Assignee: Davy McKee (London) Limited
    Inventors: Martyn Wilmott, George E. Harrison, John Scarlett, Michael A. Wood, Donald H. McKinley
  • Patent number: 5136062
    Abstract: A method of preparing a nitrate ester of an epoxy alcohol, which consists of reacting an epoxy alcohol with N.sub.2 O.sub.5 in an inert solvent at a temperature of -10.degree. C. to -40.degree. C., followed by quenching the reaction mixture in aqueous solution. Quenching separates the nitric acid and nitrate ester coproducts into aqueous and organic phases respectively to prevent subsequent reaction between the two. Reaction between the nitric acid coproduct and epoxy alcohol reagent to produce acyclic contaminants is supressed by adding the epoxy alcohol to excess N.sub.2 O.sub.5, thereby rapidly converting available alcohol to nitrate ester.
    Type: Grant
    Filed: March 22, 1991
    Date of Patent: August 4, 1992
    Assignee: The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Northern Ireland
    Inventors: Ross W. Millar, Norman C. Paul, Peter Golding
  • Patent number: 5136061
    Abstract: An optically active pentane compound of the general formula (I): ##STR1## wherein R.sub.1 represents a lower alkyl group having 1 to 4 carbon atoms, R.sub.2 represents a lower alkoxycarbonyl group having an alkoxy moiety of 1 to 4 carbon atoms, or a straight-chain or branched alkyl group having 1 to 7 carbon atoms which is unsubstituted or substituted with a hydroxy or protected hydroxy group, A represents a halogen atom, hydroxy, protected hydroxy, or ethynyl group, or a group of the formula ##STR2## B represents a hydrogen atom, hydroxy, protected hydroxy or acyloxy group, D represents a hydrogen atom, or A and B together can form an acetal or epoxy group, A and D together can form an ethylidene group, and B and D together can form a carbon-carbon direct bond, and a chiral central carbon atoms marked with symbols *, # and .thrfore. in said formula (I) alternatively have one of an R-configuration and an S-configuration.
    Type: Grant
    Filed: June 13, 1991
    Date of Patent: August 4, 1992
    Assignee: Asahi Denka Kogyo K.K.
    Inventors: Seiichi Takano, Kunio Ogasawara
  • Patent number: 5132473
    Abstract: A process for production of 1,1,1-trifluoro-2,2-dichloroethane comprising reacting 1,1,1-trifluoro-2-chloroethane with hydrogen chloride and oxygen in the presence of a metal salt as a catalyst.
    Type: Grant
    Filed: September 21, 1990
    Date of Patent: July 21, 1992
    Assignee: Daikin Industries, Ltd.
    Inventors: Yasuhisa Furutaka, Yukio Homoto, Tsunetoshi Honda
  • Patent number: 5132455
    Abstract: This invention relates to perfluoroether compounds, and to a general method for creating such compounds. It has been found that such compounds may be created by a three-step method which may be performed using a wide variety of ester starting materials. The first step of the three-step process comprises partial fluorination of a selected polyester compound. This may be performed by contacting the selected polyester with fluorine gas under predetermined conditions until a desired level of partial fluorination is achieved.The second step of this three-step process involves indirect fluorination to convert the partially fluorinated polyester into partially fluorinated polyether compounds. This step may be conducted by contacting the partially fluorinated polyester with SF.sub.4.The third step of the three-step synethetic process comprises direct fluorination of the partially fluorinated polyether compound at conditions which essentially complete the perfluorinated polyether compound.
    Type: Grant
    Filed: January 16, 1991
    Date of Patent: July 21, 1992
    Assignee: Exfluor Research Corporation
    Inventor: Richard J. Lagow
  • Patent number: 5130482
    Abstract: Improved process for producing an optically active atenolol useful as a .beta.-adrenergic blocker for the treatment of angina pectoris, arrhythmia and hypertension, which comprising reacting a phenol compound with an optically active epihalohydrin to give an intermediate, optically active glycidyl ether compound, followed by reacting the intermediate with isopropylamine, and purification method of the optically active atenolol in high yield by means of forming a salt of atenolol with a Bronsted's acid whereby the salt of optically active atenolol having high optical purity can be separated from the salt of racemic atenolol by solid-liquid separation method.
    Type: Grant
    Filed: December 7, 1990
    Date of Patent: July 14, 1992
    Assignee: Daiso Company, Ltd.
    Inventors: Yoshikazu Takehira, Nobuaki Saragai, Kazuhiro Kitaori