Oxygen Containing Compound Produced Patents (Class 205/455)
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Publication number: 20030183534Abstract: A process is provided for the preparation of trialkyl orthocarboxylates by the electrochemical oxidation of alpha, beta-diketones or alpha, beta-hydroxyketones, the keto group being present in the form of a ketal group derived from C1- to C4-alkylalcohols and the hydroxyl group optionally being present in the form of an ether group derived from C1- to C4-alkylalcohols (ketals K), in the presence of C1- to C4-alcohols (alcohols A), the molar ratio of the ketals K to the alcohols A in the electrolyte being 0.2:1 to 10:1.Type: ApplicationFiled: March 3, 2003Publication date: October 2, 2003Inventors: Andreas Fischer, Hermann Ptter
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Patent number: 6569309Abstract: Disclosed is a fuel cell type reactor for performing an oxidation reaction of a system comprising a substrate, a reductant and an oxidant, comprising: a casing; an anode which comprises an anode active material and which is ion-conductive or active species-conductive; and a cathode which comprises a cathode active material and which is ion-conductive or active species-conductive, wherein the anode and the cathode are disposed in spaced relationship in the casing to partition the inside of the casing into an intermediate compartment between the anode and the cathode, an anode compartment on the outside of the anode and a cathode compartment on the outside of the cathode, and wherein the intermediate compartment has an inlet for an electrolyte solution and a substrate, the anode compartment has an inlet for a reductant, and the cathode compartment has an inlet for an oxidant.Type: GrantFiled: October 9, 2001Date of Patent: May 27, 2003Assignee: Asahi Kasei Kabushiki KaishaInventors: Kiyoshi Otsuka, Ichiro Yamanaka, Ken Suzuki
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Publication number: 20020185380Abstract: This invention discloses a device for producing electrolytic water (100) comprising an electrode unit (2) comprising a closed-type anode chamber (16), at least part of whose wall is a septum (18) and within which an anode (20) is disposed, and a cathode (24) disposed outside of the anode chamber (16); and a power source unit (4) for supplying DC power to the electrode unit (2). Electrolysis is conducted by filling the anode chamber (16) of the device for producing electrolyte water with a 0.01 to 2 M aqueous electrolyte solution while immersing the device for producing electrolyte water in a 0.001 to 0.01 M aqueous electrolyte solution and then supplying electric power between the anode and the cathode. For example, tap water may be directly used as the 0.001 to 0.01 M aqueous electrolyte solution.Type: ApplicationFiled: April 17, 2002Publication date: December 12, 2002Applicant: Mikuni CorporationInventor: Kokichi Hanaoka
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Patent number: 6395165Abstract: A novel process for the continuous preparation of perfluorinated organic compounds by electrochemical fluorination of the parent non-fluorinated or partially fluorinated organic compounds using hydrogen fluoride having an arsenic content of less than about 10 ppm can be operated over a prolonged period of time without the electrode area-time yield decreasing over time.Type: GrantFiled: June 22, 2001Date of Patent: May 28, 2002Assignee: Bayer AktiengesellschaftInventors: Andreas Bulan, Joachim Herzig, Günter Lailach
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Patent number: 6342149Abstract: A method for carboxylating terminal alkynes that have at least one additional aliphatic carbon atom in an &agr; position and that do not have a proton which has a higher acidity than that of the proton of the terminal triple bond. In an undivided electrolysis cell equipped with a cathode and an anode, a solution of the terminal alkyne in an aprotic solvent is acted upon by carbon dioxide at a pressure higher than atmospheric pressure. The invention provides a method in which carbon dioxide is selectively inserted between the terminal C—H bond, without disturbing the triple bond, and can be carried out without a catalyst or catalyst precursor.Type: GrantFiled: September 5, 2000Date of Patent: January 29, 2002Assignee: Forschungszentrum KarlsruheInventors: Frank Köster, Eckhard Dinjus
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Publication number: 20020008038Abstract: An array of selectively addressible microelectrodes for combinatorial synthesis of complex polymers or alloys.Type: ApplicationFiled: December 22, 2000Publication date: January 24, 2002Applicant: TheraSense, Inc.Inventors: Adam Heller , Daren J. Caruana
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Patent number: 6294069Abstract: A process for the preparation of chiral 2-aryl or 2-heterocyclyl-propionic acids of the formula wherein the substituents are as defined in the specification.Type: GrantFiled: January 27, 2000Date of Patent: September 25, 2001Assignee: Centre National de la Recherche ScientifiqueInventors: Muriel Durandetti, Isabelle Lachaise, Jean-Yves Nedelec, Jacques Perichon
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Publication number: 20010019020Abstract: One embodiment of the present invention provides a process, which includes:Type: ApplicationFiled: December 22, 2000Publication date: September 6, 2001Applicant: BASF AKTIENGESELLSCHAFTInventors: Claudia Merk, Gunther Huber
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Patent number: 6251256Abstract: A process for electrochemical oxidation of aldehydes to esters is provided. The invention includes electrooxidation at a pH where an intermediate hemiacetal is favored, thereby providing for maximum selectivity to the desired ester and for maximum reaction efficiency. In particular, the invention provides for the electrooxidation of acetaldehyde to methyl acetate. The invention is illustrated with reference reactants native to the carbonylation process for the manufacture of acetic acid. Processes described herein are readily adapted to an industrial scale, particularly for the removal of acetaldehyde from process streams.Type: GrantFiled: February 4, 1999Date of Patent: June 26, 2001Assignee: Celanese International CorporationInventors: George A. Blay, Ricardo E. Borjas
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Patent number: 6214196Abstract: A method of producing a bisphosphine oxide by performing a koble electrolysis coupling reaction to a phosphine oxide carboxylic acid represented by the general formula (1): wherein the bisphosphine oxide is represented by the following general formula (2):Type: GrantFiled: August 9, 1999Date of Patent: April 10, 2001Assignee: Nippon Chemical Industrial Co., Ltd.Inventors: Masashi Sugiya, Hiroyuki Nohira
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Patent number: 6197186Abstract: The invention relates to a process for preparing silver compounds. The process relates to the preparation of silver compounds of the general formula (I) RSO3Ag (I) where R is an unsubstituted or substituted, linear or branched, saturated, monounsaturated or polyunsaturated alkyl or alkenyl radical having 1 to 9 carbon atoms or an unsubstituted or substituted aryl radical having 6 to 12 carbon atoms, which comprises subjecting acid of the general formula (II) RSO3H (II) where R has the above mentioned meaning, to an electrolytic dissolution of the anode in a membraneless electrolysis cell having metallic silver as anode.Type: GrantFiled: October 2, 1998Date of Patent: March 6, 2001Assignee: Th. Goldschmidt AgInventors: Dieter Guhl, Frank Houselmann
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Patent number: 6004445Abstract: The present invention relates to electrochemical methods for the recovery of ascorbic acid from an ascorbate salt without the co-generation of a waste salt stream and while maintaining high conductivity of the electrochemical cell thereby providing for quantitative conversion of the salts to ascorbic in both batch and continuous mode processes. In one embodiment the feed stream comprising an ascorbate salt is dissociated under the influence of an electric field and subjected to water splitting electrodialysis. The ascorbate ion combines with a proton and the salt cation combines with a hydroxyl ion to form ascorbic acid and base, respectively. The feed stream further comprises an inorganic salt which maintains high conductivity in the cell, facilitates quantitative conversion of ascorbate salts to ascorbic acid in both batch and continuous mode processes, and promotes precipitation and crystallization of ascorbic acid as a fine powder.Type: GrantFiled: June 30, 1998Date of Patent: December 21, 1999Assignee: Electrosynthesis Company, Inc.Inventors: J. David Genders, Dan M. Hartsough
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Patent number: 5916430Abstract: The preparation of epoxides of the general formula I ##STR1## in which the substituents R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 are independently hydrogen, C.sub.1 -C.sub.20 -alkyl, C.sub.3 -C.sub.12 -cycloalkyl, C.sub.4 -C.sub.20 -cycloalkylalkyl, C.sub.1 -C.sub.20 -hydroxyalkyl, a heterocyclic ring, or an aryl or C.sub.7 -C.sub.20 -arylalkyl group optionally substituted by C.sub.1 -C.sub.8 -alkyl, C.sub.1 -C.sub.8 -alkoxy, halogen, C.sub.1 -C.sub.4 -haloalkyl, C.sub.1 -C.sub.4 -haloalkoxy, phenyl, phenoxy, halophenyl, halophenoxy, carboxy, C.sub.2 -C.sub.8 -alkoxycarbonyl, or cyano, or R.sup.1 and R.sup.2 or R.sup.1 and R.sup.3 or R.sup.1 and R.sup.4 or R.sup.3 and R.sup.4 or R.sup.4 and R.sup.5 together form a (CH.sub.2).sub.n group in which n is an integer from 1 to 10 and which may be optionally substituted by C.sub.1 -C.sub.8 -alkyl, C.sub.1 -C.sub.8 -alkoxy, and/or halogen, andR.sup.6 is hydrogen, C.sub.1 -C.sub.Type: GrantFiled: September 7, 1993Date of Patent: June 29, 1999Assignee: BASF AktiengesellschaftInventor: Dieter Haermeling
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Patent number: 5679237Abstract: Catalyst compounds comprising at least one transition metal having an oxidation number of 0 or 1 and at least one sulfonated phosphine are electrochemically synthesized, by electrolyzing an aqueous solution catholyte (contained in the cathode compartment of any suitable electrolytic cell) comprising at least one transition metal compound and at least one sulfonated phosphine.Type: GrantFiled: December 6, 1995Date of Patent: October 21, 1997Assignee: R. P. Fiber & Resin IntermediatesInventors: Alex Chamard, Dominique Horbez, Marc Huser, Robert Perron
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Patent number: 5660711Abstract: A process is described for preparing 3-exomethylene cephalosporanic acid derivatives for use in the synthesis of cephalosporin antibiotics such as ceftibuten. The process comprises electrochemical reduction of a compound of the formula (IV) ##STR1## wherein: R.sup.3 is CH.sub.3 C(O)--; ##STR2## is an optional sulfoxide group; n is 2 or 3; R.sup.1 is H and R is H or NHR.sup.2, where R.sup.2 is H or a protecting group selected from C.sub.6 H.sub.5 CH.sub.2 OC(O)--, C.sub.6 H.sub.5 C(O)-- or C.sub.1 -C.sub.6 alkoxy-C(O)--; or wherein R and R.sup.1 together with the carbon atom to which they are attached comprise --C(O)--, and produces the desired 3-exomethylene compounds with low levels of the corresponding 3-methyl tautomers.Type: GrantFiled: December 8, 1995Date of Patent: August 26, 1997Assignee: Schering CorporationInventors: Derek Walker, Junning Lee, Charles R. Martin, Haiyan Zhang, Loris Sogli, Ermanno Bernasconi, Vinod Parakkal Menon
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Patent number: 5571400Abstract: The invention relates to a process for the electrosynthesis of an aldehyde of the formula (I)R.sup.1 --CHO (I)in which R.sup.1 is an aryl or alkyl radical, by electrolysis of an organic halide of the formula (II)R.sup.1 --Hal (II)in which Hal is chlorine or bromineand of an N,N-disubstituted formamide of the formula (III) ##STR1## in which R.sup.2 and R.sup.3 are alkyl or aryl in a cell which is equipped with electrodes and has a chamber, the anode being self-consuming and being composed of a reducing metal, wherein the cathode is composed of lead.Type: GrantFiled: August 16, 1995Date of Patent: November 5, 1996Assignee: Hoechst AktiengesellschaftInventor: Thomas Karcher