Patents Examined by J. E. Evans
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Patent number: 5128491Abstract: The present invention relates to a process for the preparation of a glycidyl ether of a di-secondary alcohol with a monomer content of about 80% to about 90% of the formula (I) ##STR1## comprising the steps of: (a) reacting a di-secondary alcohol of the formula (II) ##STR2## with epichlorohydrin in the presence of an alkali and a phase transfer catalyst to produce a glycidyl ether with a monomer content of about 60% to about 75%; and(b) reacting said glycidyl ether with a monomer content of about 60% to about 75% with epichlorohydrin in the presence of an alkali and benzyltrimethylammonium chloride to produce a glycidyl ether of a di-secondary alcohol with a monomer content of about 80% to about 90%.Type: GrantFiled: July 30, 1991Date of Patent: July 7, 1992Assignee: Ciba-Geigy CorporationInventor: Chi-Wen F. Cheng
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Patent number: 5124503Abstract: The present invention provides stabilized compositions comprising dichlorotrifluoroethane and effective stabilizing amounts of alkanol having 4 or 5 carbon atoms, nitroalkane having 1 to 3 carbon atoms, and a third component of 1,2-epoxyalkane having 2 to 7 carbon atoms or phosphite ester. Stabilized dichlorotrifluoroethane is useful in a variety of vapor degreasing, cold cleaning, and solvent cleaning applications including defluxing.Type: GrantFiled: December 13, 1990Date of Patent: June 23, 1992Assignee: Allied-Signal Inc.Inventors: Chien C. Li, Kane D. Cook, Alfred A. Riederer
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Patent number: 5124491Abstract: In the catalytic hydrogenation of fatty acid methyl esters, the fatty acid methyl esters are continuously reacted with hydrogen under pressures of from 20 to 100 bar and at temperatures of from 160.degree. to 270.degree. C. with molar ratios of hydrogen to fatty acid methyl ester substrate of from 10:1 to 500:1. The reaction is carried out over catalysts which contain from 30 to 40% by weight copper, from 23 to 30% by weight chromium, from 1 to 10% by weight manganese, from 1 to 10% by weight silicon and from 1 to 7% by weight barium (% by weight, based in each case on oxidic catalyst mass) and, if desired, other transition metals in the form of their oxides. After calcination of the components, the catalyst is converted into shaped particulate and/or granulated elements with from 1 to 10% by weight, based on oxidic catalyst, of at least one binder in addition to 1 to 10% by weight graphite. The catalyst is activated with hydrogen or a hydrogen-containing gas mixture.Type: GrantFiled: April 3, 1990Date of Patent: June 23, 1992Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Theo Fleckenstein, Joachim Pohl, Franz J. Carduck
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Patent number: 5124492Abstract: This invention relates to a process for removing peroxide impurities contained in a tertiary butyl alcohol feedstock. The process involves contacting the feedstock with an iron (II) compound such as iron (II) chloride, under an inert atmosphere at elevated pressures and temperatures for a time sufficient to reduce the peroxides to alcohols and oxidize the iron (II) to iron (III). The iron (II) compound may be added in a homogeneous phase or it may be deposited on a support. When the iron (II) is added as a homogeneous phase, it is separated from the product by contacting the mixture with a cation exchange column. Finally, when a supported iron (II) compound is used, the process may be run in a batch or continuous mode.Type: GrantFiled: February 12, 1991Date of Patent: June 23, 1992Assignee: UOPInventors: Chwu-Ching Jan, Thomas P. Malloy
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Patent number: 5120885Abstract: A process for producing alcohols comprising catalytically reducing fats and oils or fatty acid esters with hydrogen in the presence of a catalyst for ester reduction is disclosed, wherein the starting oils are first treated at a temperature of from 50.degree. to 200.degree. C. in hydrogen gas or a mixed gas of hydrogen and an inert gas in the presence of a nickel catalyst to yield a sulfur content at not more than 0.6 ppm an acid value (KOH mg/g) of not more than 2. By use of the thus purified starting oils, the catalyst for ester reduction exhibits a prolonged duration.Type: GrantFiled: September 9, 1991Date of Patent: June 9, 1992Assignee: Kao CorporationInventors: Kiyoshi Tsukada, Yasuyuki Hattori, Hiroyuki Tamura, Akira Yamamuro, Kunizo Hashiba, Osamu Tabata
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Patent number: 5120882Abstract: Alkanes are oxidized by contact with oxygen-containing gas in the presence as catalyst of a metalloporphyrin in which hydrogen atoms in the porphyrin ring have been replaced with one or more nitro groups. Hydrogen atoms in the porphyrin ring may also be substituted with halogen atoms.Type: GrantFiled: September 12, 1991Date of Patent: June 9, 1992Assignee: Sun Refining and Marketing CompanyInventors: Paul E. Ellis, Jr., James E. Lyons
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Patent number: 5120883Abstract: A catalyic process is disclosed for producing CCl.sub.3 CF.sub.3 from CHCl.sub.2 CF.sub.3, CH.sub.2 ClCF.sub.3 and/or CH.sub.3 CF.sub.3 by chlorination at elevated temperature. Suitable catalysts for the process include carbon catalysts and catalysts wherein halides of certain metals (Zn, Cu, Cr, Ru, Rh, and/or Pt) are supported on carbon.Type: GrantFiled: August 26, 1991Date of Patent: June 9, 1992Assignee: E. I. Du Pont de Nemours and CompanyInventors: V. N. Mallikarjuna Rao, Frank J. Weigert, Leo E. Manzer
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Patent number: 5120886Abstract: Hydroperoxides are decomposed by contact with metal ligand catalysts of coordination complexes in which hydrogen in the ligand molecule has been substituted with electron-withdrawing elements or groups, for example halogen or nitro or cyano groups. Preferred catalysts are iron perhaloporphyrins.Type: GrantFiled: July 9, 1991Date of Patent: June 9, 1992Assignee: Sun Refining and Marketing CompanyInventors: James E. Lyons, Paul E. Ellis, Jr.
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Patent number: 5118888Abstract: Process for the preparation of 1,2-difluoro-ethylene and 1-chloro-1,2-difluoroethylene by catalytic hydrogenation of 1,2-dichloro-difluoro-ethylene.Type: GrantFiled: May 29, 1990Date of Patent: June 2, 1992Assignee: Ausimont S.p.A.Inventors: Claudio Gervasutti, Giorgio Guglielmo, Luigi Marangoni
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Patent number: 5118883Abstract: A process is described for the preparation of propylene glycol and ethylene glycol from formaldehyde, the first step involving conversion of the formaldehyde into a mixture of polyhydroxyl compounds in a conventional manner in an alkaline medium by self-condensation and the second step involving catalytic hydrogenolysis of this mixture with a hydrogen consumption of at least 0.5 mol of hydrogen per mol of formaldehyde employed for forming the polyhydroxyl compounds.Type: GrantFiled: July 10, 1991Date of Patent: June 2, 1992Assignee: BASF AktiengesellschaftInventors: Eugen Gehrer, Wolfgang Harder
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Patent number: 5118822Abstract: Olefins are oxidized to epoxide compounds by contacting the olefins with organic hydroperoxides in the presence of rhenium catalysts comprised of perrhenate anions and organopnicogen-containing cations. High yields of epoxides are attained, particularly when the olefin substrate bears an aromatic substituent.Type: GrantFiled: September 30, 1991Date of Patent: June 2, 1992Assignee: Arco Chemical Technology, L.P.Inventors: Wilfred P. Shum, Haven S. Kesling, Jr.
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Patent number: 5118886Abstract: Alkanes are oxidized by contact with oxygen-containing gas in the presence as catalyst of a metalloporphyrin in which hydrogen atoms in the porphyrin ring have been substituted with one or more cyano groups. Hydrogen atoms in the porphyrin ring may also be substituted with halogen atoms.Type: GrantFiled: September 12, 1991Date of Patent: June 2, 1992Assignee: Sun Refining and Marketing CompanyInventors: Paul E. Ellis, Jr., James E. Lyons
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Patent number: 5118884Abstract: The invention concerns the production of a diolefinic unsaturated alcohol such as geraniol or nerol by the selective hydrogenation of citral. It is characterized by the use of a catalyst based on a metal from group VIII and based on a metal selected from the group made up of tin, germanium and lead, on preferably a silica carrier.Type: GrantFiled: September 6, 1990Date of Patent: June 2, 1992Assignee: Institut Francais du PetroleInventors: Blaise Didillon, Jean-Pierre Candy, Jean-Marie Bassett, Jean-Paul Bournonville
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Patent number: 5117012Abstract: Disclosed are processes for the manunfacture of 3,4-epoxy-1-butene (EpB) and, particularly, for the recovery of EpB from an epoxidation effluent comprising EpB, butadiene, oxygen and an inert gas obtained by the selective epoxidation of butadiene with an oxygen-containing gas in the presence of a catalyst and an inert gas. EpB is separated from the effluent by means of an absorption process using liquid butadiene as the absorbent material.Type: GrantFiled: October 7, 1991Date of Patent: May 26, 1992Assignee: Eastman Kodak CompanyInventors: Jerome L. Stavinoha, Jr., John D. Tolleson
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Patent number: 5117010Abstract: The present invention relates to the preparation of di-secondary alcohols comprising the reaction of an alcohol and a diglycidyl ether of a dihydric phenol in the presence of a catalyst of the formula (IV):MX (IV)wherein M is a metal from Groups IB to VIIIB or a metal or metalloid from Groups IIA to VA of the Periodic Chart of Elements or an ammonium ion and X is an anion selected from the group consisting of BF.sub.4.sup.-, PF.sub.6.sup.-, AsF.sub.6.sup.-, SbF.sub.6.sup.-, AlF.sub.4.sup.-, TiF.sub.6.sup.2-, SiF.sub.6.sup.2-, and ZrF.sub.6.sup.2- to produce the di-secondary alcohol, which can then be subjected to glycidylation to produce a glycidyl ether, orthe reaction of an alcohol, glycol or polyol and epichlorohydrin in the presence of the foregoing catalyst, followed by ring closure employing an alkali to produce a mono- or polyglycidyl ether. The monoglycidyl ether can be further reacted with a dihydric phenol to produce a di-secondary alcohol which is then glycidylized to produce a glycidyl ether.Type: GrantFiled: August 15, 1991Date of Patent: May 26, 1992Assignee: Ciba-Geigy CorporationInventor: Chi-Wen F. Cheng
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Patent number: 5117011Abstract: There is provided a process for the non-catalytic oxidation of gaseous hydrocarbons, preferably propylene. A mixture of propylene, oxygen and a inert diluent are provided to a rector vessel capable of maintaining an isothermal reaction. Maintaining a temperature in the range of about 200.degree. C. to about 350.degree. C. and a propylene partial pressure of about 80 psia to about 300 psia provides the highest propylene oxide selectivity.Type: GrantFiled: August 7, 1991Date of Patent: May 26, 1992Assignee: Olin CorporationInventors: Ruford T. Pennington, Michael C. Fullington
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Patent number: 5113009Abstract: A cyclical process for producing and isolating a mineral acid salt of an amino acid methyl ester in high purity and yield from the reaction solution produced by esterifying an amino acid with methanol in methanol in the presence of a mineral acid, by cooling the resulting reaction solution to precipitate crystals of the mineral acid salt; filtering the crystals;drying the isolated wet crystals or washing with another organic solvent; and recycling the filtrate for reuse in the esterification reaction.Type: GrantFiled: December 26, 1989Date of Patent: May 12, 1992Assignee: Mitsui Toatsu Chemicals, IncorporatedInventors: Masanobu Ajioka, Chojiro Higuchi, Takeshi Oura, Toshio Katoh, Akihiro Yamaguchi
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Patent number: 5106868Abstract: Compounds UCF1 and derivatives thereof exhibit anti-bacterial and anti-tumor activities and may be used for the preparation of anti-bacterial and anti-tumor agents.Compounds UCF1 may be produced by fermentation of a microorganism of the genus Streptomyces capable of producing compounds UCF1, preferably Streptomyces sp. UOF1 (FERM BP-2844) and recovering the desired compounds from the cultured broth.The compounds UCF1 have the formula ##STR1## wherein R represents either ##STR2## The compounds may be oxidized to obtain derivatives of formula ##STR3## which exhibit similar pharmacological activities.Type: GrantFiled: May 7, 1991Date of Patent: April 21, 1992Assignee: Kyowa Hakko Kogyo Kabushiki KaishaInventors: Hirofumi Nakano, Mitsunobu Hara, Yutaka Saito, Yoji Ikuina, Toshimitsu Takiguchi, Masami Okabe
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Patent number: 5107046Abstract: An improved process is disclosed for preparing aromatic fluorides by diazotization-fluorination in hydrogen fluoride. The improvement includes, prior to the decomposition of the diazonium fluoride, adding to the diazotizing reaction mixture, urea or a salt thereof in an amount sufficient to reduce the vapor pressure of hydrogen fluoride over the diazonium solution. Also disclosed is a process for reducing the vapor pressure over diazonium fluoride solutions.Type: GrantFiled: May 23, 1990Date of Patent: April 21, 1992Assignee: Mallinckrodt Specialty Chemicals Co., Inc.Inventor: Gary L. Cantrell
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Patent number: 5107018Abstract: A process for the preparation of lower polyhydric alcohols by catalytic hydrogenation of aqueous saccharose solutions at elevated temperature and pressure using a catalyst of which the catalytically active material essentially contains the metals cobalt, copper and manganese in the following concentrations, the total weight of said metals being standardized as 100%:from 0 to 100% w/w of cobalt,from 0 to 85% w/w of copper andfrom 0 to 80% w/w of manganese,this said metal content of said catalytically active material comprising either cobalt alone or at least two of said metals, which active material may also contain added inorganic poly acids and/or heteropoly acids, wherein from 0.01 to 5% w/w of one or more base-acting metal compounds of metals from the first and second main groups and from group IIIA of the Periodic Table are added to the saccharose solution to be hydrogenated.Type: GrantFiled: August 13, 1990Date of Patent: April 21, 1992Assignee: BASF AktiengesellschaftInventor: Ludwig Schuster