Patents by Inventor Johannes Eicher
Johannes Eicher has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7880039Abstract: Carbonyl fluoride, which can also be used as an etching gas, can be prepared by photochemical oxidation of chlorodifluoromethane or trifluoromethane with light, for example with light of a wavelength ?280 nm in the presence of chlorine.Type: GrantFiled: February 9, 2005Date of Patent: February 1, 2011Assignee: Solvay Fluor GmbHInventors: Max Braun, Johannes Eicher
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Publication number: 20100191024Abstract: Halogenated alkenes, especially fluorinated alkenes can be prepared from halogenated and fluorinated alkanes, respectively, by dehydrohalogenation or dehydrofluorination in the presence of a high-surface metal fluoride or oxifluoride. Preferably, trifluoroethylene, pentafluoropropene, tetrafluorobutenes or trifluorobutadiene are prepared. Aluminium fluoride is highly suitable. The metal fluoride or oxifluoride can be applied supported on a carrier.Type: ApplicationFiled: July 11, 2008Publication date: July 29, 2010Applicant: SOLVAY FLUOR GMBHInventors: Ercan Uenveren, Erhard Kemnitz, Stephan Rudiger, Anton Dimitrov, Johannes Eicher
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Publication number: 20100181186Abstract: The invention consequently relates, in one aspect, to a process for obtaining a hydrofluoroalkane comprising at least two carbon atoms, which is purified of unsaturated organic impurities, according to which the hydrofluoroalkane containing organic impurities including (chloro)fluoro olefins is subjected to at least one purification treatment with bromine or BrCl, preferably in the presence of, an initiator. The process is suitable, for example, to purify 1,1,1,2-tetrafluoroethane. A further aspect concerns the application of LEDs or OLEDs to support chemical reactions of the gas-gas, liquid-liquid or gas-liquid type, and a respective reactor.Type: ApplicationFiled: July 16, 2008Publication date: July 22, 2010Applicant: SOLVAY FLUOR GMBHInventors: Ercan Uenveren, Eckhard Hausmann, Johannes Eicher, Kerstin Eichholz
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Patent number: 7629496Abstract: A process for the manufacture of 1,1,1,3,3-pentafluoropropane, which comprises reacting 1,1,1,3,3,3-hexafluoropropane with a source of hydrogen.Type: GrantFiled: March 22, 2007Date of Patent: December 8, 2009Assignee: Solvay (Societé Anonyme)Inventors: Johannes Eicher, Stefan Mross
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Patent number: 7629495Abstract: A process for the manufacture of 1,1,1,3,3-pentafluoropropane which comprises adding hydrogen fluoride to 1,1,1,3-tetrafluoropropene in the substantial absence of metal catalyst. Another embodiment provides for the manufacture of 1,1,1,3,3-pentafluoropropane which comprises adding hydrogen fluoride to 1,1,1,3-tetrafluoropropene in the presence of an amine hydrofluoride complex and a metal catalyst.Type: GrantFiled: March 22, 2007Date of Patent: December 8, 2009Assignee: Solvay (Societé Anonyme)Inventors: Johannes Eicher, Stefan Mross
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Publication number: 20090062576Abstract: A process for the manufacture of 1,1,1,3,3-pentafluoropropane which comprises adding hydrogen fluoride to 1,1,1,3-tetrafluoropropene in the substantial absence of metal catalyst. Another embodiment provides for the manufacture of 1,1,1,3,3-pentafluoropropane which comprises adding hydrogen fluoride to 1,1,1,3-tetrafluoropropene in the presence of an amine hydrofluoride complex and a metal catalyst.Type: ApplicationFiled: March 22, 2007Publication date: March 5, 2009Applicant: SOLVAY (SOCIETE ANONYME)Inventors: Johannes Eicher, Stefan Mross
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Publication number: 20090062577Abstract: A process for the manufacture of 1,1,1,3,3-pentafluoropropane, which comprises reacting 1,1,1,3,3,3-hexafluoropropane with a source of hydrogen.Type: ApplicationFiled: March 22, 2007Publication date: March 5, 2009Applicant: SOLVAY (SOCIETE ANONYME)Inventors: Johannes Eicher, Stefan Mross
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Patent number: 7405328Abstract: In a method or producing haloalkenone ethers by addition of a carboxylic acid halide to a vinyl ether and subsequent elimination of hydrogen halide, the improvement comprising carrying out the reaction in the absence of a base and/or in the presence of a stabilizer for the resulting alkenone, whereby higher yields of the desired alkenone product can be obtained.Type: GrantFiled: December 6, 2005Date of Patent: July 29, 2008Assignee: Solvay Fluor GmbHInventors: Eckhard Hausmann, Oalf Boese, Johannes Eicher
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Publication number: 20070197826Abstract: Carbonyl fluoride, which can also be used as an etching gas, can be prepared by photochemical oxidation of chlorodifluoromethane or trifluoromethane with light, for example with light of a wavelength ?280 nm in the presence of chlorine.Type: ApplicationFiled: February 9, 2005Publication date: August 23, 2007Applicant: Solvay Fluor GmbHInventors: Max Braun, Johannes Eicher
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Publication number: 20060217533Abstract: A process for producing a compound containing an acylated nitrogen atom in which the adduct compound formed from an N-protonated cation and a chloride, bromide or iodide anion or the free nitrogen base is reacted with an acyl halide, preferably an acyl chloride, in the presence of an acid that drives off the released hydrogen chloride (HCl), hydrogen bromide (HBr) or hydrogen iodide (HI).Type: ApplicationFiled: March 10, 2006Publication date: September 28, 2006Applicant: Solvay Fluor GmbHInventors: Max Braun, Johannes Eicher, Saskia Braukmueller
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Publication number: 20060084813Abstract: In a method or producing haloalkenone ethers by addition of a carboxylic acid halide to a vinyl ether and subsequent elimination of hydrogen halide, the improvement comprising carrying out the reaction in the absence of a base and/or in the presence of a stabilizer for the resulting alkenone, whereby higher yields of the desired alkenone product can be obtained.Type: ApplicationFiled: December 6, 2005Publication date: April 20, 2006Applicant: Solvay Fluor GmbHInventors: Eckhard Hausmann, Olaf Boese, Johannes Eicher
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Patent number: 7014831Abstract: Sulfuryl fluoride, which is useful as a fumigant, may be contaminated with sulfur dioxide and possibly other impurities such as sulfuryl chloride, depending on the way it is produced. According to the invention, sulfur dioxide and, if applicable, sulfuryl chloride fluoride are removed from a contaminated sulfuryl fluoride product by using aluminum oxide as an adsorbing agent. The method of the invention is highly advantageous because it eliminates the need to use activated carbon as an additional adsorbent.Type: GrantFiled: August 6, 2004Date of Patent: March 21, 2006Assignee: Solway Fluor und Derivate GmbHInventors: Johannes Eicher, Matthias Marek, Lore Hirsch
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Publication number: 20050022664Abstract: Sulfuryl fluoride, which is useful as a fumigant, may be contaminated with sulfur dioxide and possibly other impurities such as sulfuryl chloride, depending on the way it is produced. According to the invention, sulfur dioxide and, if applicable, sulfuryl chloride fluoride are removed from a contaminated sulfuryl fluoride product by using aluminum oxide as an adsorbing agent. The method of the invention is highly advantageous because it eliminates the need to use activated carbon as an additional adsorbent.Type: ApplicationFiled: August 6, 2004Publication date: February 3, 2005Applicant: Solvay Fluor und Derivate GmbHInventors: Johannes Eicher, Matthias Markek, Lore Hirsch
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Patent number: 6252105Abstract: Organic compounds, e.g. fluorinated organic compounds such as fluorinated carboxylic acids or fluorinated carboxylic acid chlorides, may contain small amounts of carboxylic acid fluorides, hydrogen fluoride or hydrolyzable fluoride, which during the preparation of derivatives of the fluorinated organic compounds, for example by esterification, may yield corrosive fluorides or hydrogen fluoride. The invention is a method for the synthesis and/or purification of preferably fluorinated organic compounds such as carboxylic acids, carboxylic acid chlorides and derivatives such as esters thereof, starting from corresponding carboxylic acid chlorides containing acid fluorides or hydrolyzable fluoride, and alcohols under the catalytic action of “onium” salts of carboxylic acids, to obtain products which have a low fluoride content. Alternatively, an inorganic oxide adsorbent is utilized.Type: GrantFiled: July 6, 1999Date of Patent: June 26, 2001Assignee: Solvay Fluor und Derivate GmbHInventors: Max Braun, Johannes Eicher, Francine Janssens, Kerstin Eichholz, Stefan Palsherm
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Patent number: 5679613Abstract: A process for preparing R113a from Rl13, and R123 from R123a or R123b by rearrangement over AlCl.sub.3, in which when the reaction mixture is heated sudden start-up of the reaction, which often causes large amounts of heat to be released and the reaction to run away, is prevented by using a specially activated AlCl.sub.3, which has been activated by means of a metal halide selected from the group consisting of NaF.multidot.nHF with 0<n.ltoreq.2, AgCl and FeCl.sub.3. In addition to it being considerably easier to control the reaction, shorter reaction times for the rearrangement and a decrease in the amount of by-products which are formed, are observed.Type: GrantFiled: March 31, 1995Date of Patent: October 21, 1997Assignee: Solvay Fluor und Derivate GmbHInventors: Hans-Walter Swidersky, Johannes Eicher, Thomas Born, Carsten Brosch, Werner Rudolph
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Patent number: 5481029Abstract: A process for preparing ketones, for example CF.sub.3 C(O)CH.sub.3, CF.sub.3 C(O)CH.sub.2 C(O)CF.sub.3 and CF.sub.3 C(O)CF.sub.2 H, in which .beta.-ketoesters are transesterified and decarboxylated using a carboxylic acid, for example trifluoroacetic acid, in the presence of a catalyst, particularly an "onium" salt of a carboxylic acid or an effective amount of a proton-donating acid, preferably a sulfonic acid such as alkyl- or arylsulfonic acids, or a mineral acid. The process is advantageously carried out in the absence of water, so that no formation of acetals or hydrates occurs, and no dehydrating step is needed. The process is simple to carry out, and if transesterification is carried out with a sufficiently active carboxylic acid, for example with trifluoroacetic acid, the presence of an additional catalyst is unnecessary.Type: GrantFiled: April 26, 1994Date of Patent: January 2, 1996Assignee: Solvay Fluor und Derivate GmbHInventors: Max Braun, Johannes Eicher, Werner Rudolph, Kerstin Eichholz
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Patent number: 5430201Abstract: A process for preparing R113a from R113, and R123 from R123a or R123b by rearrangement over AlCl.sub.3, in which when the reaction mixture is heated sudden start-up of the reaction, which often causes large amounts of heat to be released and the reaction to run away, is prevented by using a specially activated AlCl.sub.3, which has been activated by means of a metal halide selected from the group consisting of NaF.nHF with 0<n.ltoreq.2, AgCl and FeCl.sub.3. In addition to it being considerably easier to control the reaction, shorter reaction times for the rearrangement and a decrease in the amount of by-products which are formed, are observed.Type: GrantFiled: October 14, 1994Date of Patent: July 4, 1995Assignee: Solvay Fluor und Derivate GmbHInventors: Hans-Walter Swidersky, Johannes Eicher, Thomas Born, Carsten Brosch, Werner Rudolph
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Patent number: 5382721Abstract: Process for the preparation of 1,1,1,2-tetrafluoroethane by reaction of hydrogen fluoride with a trihaloethylene according to which trifluoroethylene is chosen as trihaloethylene and the reaction is carried out in the liquid phase.Type: GrantFiled: June 7, 1993Date of Patent: January 17, 1995Assignee: Solvay (Societe Anonyme)Inventors: Pascal Pennetreau, Francine Janssens, Max Braun, Johannes Eicher, Werner Rudolph, Eckhard Hausmann
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Patent number: 5336817Abstract: A method of preparing CH.sub.2 FCF.sub.3 from fluorodichloro-ethylene using a catalytically active niobium, tantalum or molybdenum fluorosulfonate compound or a catalyst mixture which comprises a niobium, tantalum or molybdenum halide and a sulfonic acid derivative.Type: GrantFiled: September 25, 1992Date of Patent: August 9, 1994Assignee: Solvay Fluor und Derivate GmbHInventors: Johannes Eicher, Karl-Heinz Fazniewscy, Matthias Rieland, Werner Rudolph
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Patent number: 5300709Abstract: A process for working up the hydrogen fluoride phase of reaction mixtures from fluorination reactions comprising contacting the hydrogen fluoride phase with oleum in order to obtain dried hydrogen fluoride, which can be recycled to the fluorination reaction.Type: GrantFiled: January 11, 1993Date of Patent: April 5, 1994Assignee: Solvay Fluor and Derivate GmbHInventors: Johannes Eicher, Werner Rudolph, Bernhard Schulte