Patents by Inventor Eric Fache
Eric Fache 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: 7705179Abstract: The present invention relates to the oxidation with oxygen, or a gas containing it, of hydrocarbons to the corresponding carboxylic acids, alcohols and/or ketones or of alcohols and/or ketones to the corresponding carboxylic acids. More specifically, the invention consists of a process for oxidizing hydrocarbon, alcohol and/or ketone using oxygen or a gas containing it, in a liquid phase and in the presence of a catalyst dissolved in the reaction medium, characterized in that the catalyst comprises at least one soluble manganese and/or cobalt compound, at least one soluble chromium compound and at least one soluble iron compound.Type: GrantFiled: June 22, 2001Date of Patent: April 27, 2010Assignee: Rhodia Polyamide IntermediatesInventor: Eric Fache
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Patent number: 7507856Abstract: The present invention relates to a process for the oxidation of hydrocarbons, in particular of branched or unbranched saturated aliphatic hydrocarbons, of cycloaliphatic or alkylaromatic hydrocarbons or of alcohols and/or ketones, to acid or polyacid compounds. It relates more particularly to the oxidation, by an oxidizing agent comprising molecular oxygen, of cyclohexane and/or of cyclohexanol and/or cyclohexanone to adipic acid, in the presence of an aromatic organic acid and a manganese-based catalyst. The yield and selectivity for adipic acid are of a high level with respect to those obtained with other solvents and catalysts.Type: GrantFiled: July 15, 2002Date of Patent: March 24, 2009Assignee: Rhodia Polyamide IntermediatesInventors: Didier Bonnet, Eric Fache, Jean-Pierre Simonato
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Patent number: 7396961Abstract: The present invention relates to a process for decomposing organic hydroperoxides in the presence of a catalyst. It provides a process for decomposing organic hydroperoxides in the presence of a catalyst into a mixture of alcohols and ketones, in which the catalyst comprises at least one ruthenium-based catalytically active metallic element incorporated into a solid support chosen from the group comprising metal oxides and carbon blacks, such as the carbon blacks obtained by the pyrolysis of organic compounds. The process of the invention is especially useful in the decomposition of important chemical intermediates such as cyclohexyl hydroperoxide.Type: GrantFiled: January 20, 2006Date of Patent: July 8, 2008Assignee: Rhodia Polyamide IntermediatesInventors: Didier Bonnet, Eric Fache, Aline Seigneurin
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Publication number: 20070129575Abstract: The present invention relates to a process for decomposing organic hydroperoxides in the presence of a catalyst. It provides a process for decomposing organic hydroperoxides in the presence of a catalyst into a mixture of alcohols and ketones, in which the catalyst comprises at least one ruthenium-based catalytically active metallic element incorporated into a solid support chosen from the group comprising metal oxides and carbon blacks, such as the carbon blacks obtained by the pyrolysis of organic compounds. The process of the invention is especially useful in the decomposition of important chemical intermediates such as cyclohexyl hydroperoxide.Type: ApplicationFiled: January 20, 2006Publication date: June 7, 2007Inventors: Didier Bonnet, Eric Fache, Aline Segneurin
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Patent number: 7041848Abstract: The present invention relates to a process for oxidizing hydrocarbons, in particular branched or unbranched saturated aliphatic hydrocarbons, cycloaliphatic or alkylaromatic hydrocarbons to acidic or polyacidic compounds. The invention relates more particularly to the oxidation, with an oxidizing agent containing molecular oxygen, of cyclohexane to adipic acid, in the presence of organic acid of lipophilic nature and in the absence of adipic acid. The separation and recycling of the unoxidized cyclohexane, the oxidation intermediates and the catalysts are easier than in the presence of acetic acid.Type: GrantFiled: March 7, 2001Date of Patent: May 9, 2006Assignee: Rhodia Polymide IntermediatesInventor: Eric Fache
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Publication number: 20050277787Abstract: The present invention relates to the oxidation with oxygen, or a gas containing it, of hydrocarbons to the corresponding carboxylic acids, alcohols and/or ketones or of alcohols and/or ketones to the corresponding carboxylic acids. More specifically, the invention consists of a process for oxidizing hydrocarbon, alcohol and/or ketone using oxygen or a gas containing it, in a liquid phase and in the presence of a catalyst dissolved in the reaction medium, characterized in that the catalyst comprises at least one soluble manganese and/or cobalt compound, at least one soluble chromium compound and at least one soluble iron compound.Type: ApplicationFiled: June 22, 2001Publication date: December 15, 2005Inventor: Eric Fache
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Publication number: 20050256343Abstract: The invention relates to a method of preparing a high-purity nitrophenol and, more specifically, p-nitrophenol from a nitrohalobenzene. The inventive method comprises the following steps: (a) hydrolysis of a nitrohalobenzene compound by reacting said compound with a base; (b) acidification in order to produce the nitrophenol compound from the salt thereof by means of an acid treatment; (c) crystallisation of the nitrophenol compound obtained; and (d) separation of the product obtained. The invention is characterised in that it also comprises at least the following steps: (e) concentration of the reaction medium after hydrolysis (a) and before acidification (b); and (f) liquid/liquid decantation after acidification (b) and before crystallisation (c), which is intended to eliminate the water phase obtained after acidification (b).Type: ApplicationFiled: July 9, 2003Publication date: November 17, 2005Inventors: Eric Fache, Sebastien Righini
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Publication number: 20040267052Abstract: The present invention relates to a process for decomposing organic hydroperoxides in the presence of a catalyst. It provides a process for decomposing organic hydroperoxides in the presence of a catalyst into a mixture of alcohols and ketones, in which the catalyst comprises at least one ruthenium-based catalytically active metallic element incorporated into a solid support chosen from the group comprising metal oxides and carbon blacks, such as the carbon blacks obtained by the pyrolysis of organic compounds. The process of the invention is especially useful in the decomposition of important chemical intermediates such as cyclohexyl hydroperoxide.Type: ApplicationFiled: August 18, 2004Publication date: December 30, 2004Inventors: Didier Bonnet, Eric Fache, Aline Seigneurin
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Publication number: 20040242922Abstract: The present invention relates to a process for the oxidation of hydrocarbons, in particular of branched or unbranched saturated aliphatic hydrocarbons, of cycloaliphatic or alkylaromatic hydrocarbons or of alcohols and/or ketones, to acid or polyacid compounds.Type: ApplicationFiled: July 8, 2004Publication date: December 2, 2004Inventors: Didier Bonnet, Eric Fache, Jean-Pierre Simonato
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Patent number: 6787669Abstract: The present invention relates to the treatment of the reaction mixtures resulting from an oxidation reaction of cyclohexane to adipic acid and more particlarly to the separation of the various constituents of the said mixtures and to the purification of the adipic acid.Type: GrantFiled: November 8, 2000Date of Patent: September 7, 2004Assignee: Rhodia Fiber & Resin IntermediatesInventors: Michel Costantini, Eric Fache, Philippe Leconte
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Publication number: 20040147777Abstract: The present invention relates to a process for the oxidation of hydrocarbons, in particular of branched or unbranched saturated aliphatic hydrocarbons or of cycloaliphatic or alkylaromatic hydrocarbons, to alcohol, ketone and/or acid or polyacid compounds.Type: ApplicationFiled: March 22, 2004Publication date: July 29, 2004Inventors: Eric Fache, Jean-Pierre Simonato
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Patent number: 6762319Abstract: The present invention relates to the oxidation, by means of oxygen or a gas containing it, of hydrocarbons to the corresponding carboxylic acids, alcohols and/or ketones or of alcohols and/or ketones to the corresponding carboxylic acids. It consists more precisely in a process for oxidizing hydrocarbon, alcohol and/or ketone, using oxygen or a gas containing it, in liquid phase and in the presence of a catalyst dissolved in the reaction medium, characterized in that the catalyst comprises a soluble manganese compound and at least one soluble chromium compound.Type: GrantFiled: April 16, 2002Date of Patent: July 13, 2004Assignee: Rhodia Polyamide IntermediatesInventors: Eric Fache, Michel Costantini
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Patent number: 6677490Abstract: The invention relates to a method for producing a mixture of alcohols/ketones by decomposing an alkyl hydroperoxide, particularly to a method for producing a cyclohexanol/cyclohexanone by decomposing cyclohexyl hydroperoxide in the presence of a heterogeneous catalyst. According to the invention, the reaction is carried out in the presence of a heterogeneous catalyst containing an organometallic segment fixed on the surface of a porous solid compound such as silicon. The organometallic segment can be formula (I).Type: GrantFiled: October 15, 2002Date of Patent: January 13, 2004Assignee: Rhodia Polyamide IntermediatesInventors: James Clark, Eric Fache, Ducan Macquarrie, Peter Price, John Rafelt
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Publication number: 20030166967Abstract: The present invention relates to a process for oxidizing hydrocarbons, in particular branched or unbranched saturated aliphatic hydrocarbons, cycloaliphatic or alkylaromatic hydrocarbons to acidic or polyacidic compounds.Type: ApplicationFiled: December 2, 2002Publication date: September 4, 2003Inventor: Eric Fache
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Publication number: 20030097025Abstract: The invention relates to a method for producing a mixture of alcohols/ketones by decomposing an alkyl hydroperoxide, particularly to a method for producing a cyclohexanol/cyclohexanone by decomposing cyclohexyl hydroperoxide in the presence of a heterogeneous catalyst. According to the invention, the reaction is carried out in the presence of a heterogeneous catalyst containing an organometallic segment fixed on the surface of a porous solid compound such as silicon. The organometallic segment ca be formula (1).Type: ApplicationFiled: October 15, 2002Publication date: May 22, 2003Inventors: James Clark, Eric Fache, Ducan Macquarrie, Peter Price, John Rafelt
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Patent number: 6563001Abstract: The present invention relates to an improved process for processing the reaction mixture from the direct oxidation of hydrocarbon into carboxylic acid, using molecular oxygen or a gas containing it, in the liquid phase, in a solvent and in the presence of a catalyst dissolved in the reaction medium, characterized in that the said process comprises: when the composition of the reaction mixture allows it, a decantation into two liquid phases: a nonpolar upper phase and a polar lower phase; a distillation of the said lower phase or, where appropriate, of all of the reaction mixture, thus separating, on the one hand, a distillate and, on the other hand, the distillation residue comprising the acids formed, the catalyst, the heavy compounds, at least some of the solvent and, if any, the reaction intermediates and side products; a purification treatment by oxidation, using molecular oxygen or a gas containing it or using oxygen donors, of the distillation residue obtained above, a distillation of the reaction sType: GrantFiled: June 12, 2001Date of Patent: May 13, 2003Assignee: Rhodia Fiber & Resin IntermediatesInventors: Michel Costantini, Eric Fache, Gilbert Marin
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Patent number: 6559339Abstract: The present invention relates to a process for the crystallization of carboxylic acid, more particularly adipic acid, and a process for manufacturing crystalline carboxylic acid, more specifically a process for treating the reaction medium resulting from the direct oxidation of a hydrocarbon into carboxylic acid such as adipic acid, for example. More specifically, the invention relates to the crystallization of adipic acid from an organic solvent, thus removing the organic impurities contained in the said acid and thus optionally facilitating its purification by a crystallization from water.Type: GrantFiled: May 31, 2001Date of Patent: May 6, 2003Assignee: Rhodia Fiber & Resin IntermediatesInventors: Michel Costantini, Eric Fache
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Patent number: 6214190Abstract: The present invention relates to a process for isolating, by membrane electrodialysis, a catalyst from a solution containing it. More precisely, it relates to the isolation of a catalyst used in a homogeneous phase molecular oxidation reaction. The invention consists of a process for isolating a homogeneous catalyst dissolved in a mixture also containing at least one aliphatic diacid, characterized in that the catalyst contains cobalt and the isolation is performed by membrane electrodialysis.Type: GrantFiled: February 8, 1999Date of Patent: April 10, 2001Assignee: Rhodia Fiber and Resin IntermediatesInventors: Eric Fache, Dominique Horbez, Philippe Leconte
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Patent number: 6147256Abstract: Carboxylic acids, e.g., adipic acid, are more selectively prepared by oxidizing cyclohexane with oxygen or an oxygen-containing gas, in liquid phase, in a solvent reaction medium which comprises a polar protic or aprotic solvent, and also in the presence of a catalytically effective amount of catalyst values dissolved in said solvent reaction medium, the catalyst values comprising at least one solvent-soluble cobalt compound and at least one solvent-soluble chromium compound.Type: GrantFiled: April 10, 1998Date of Patent: November 14, 2000Assignee: Rhodia Fiber and Resin IntermediatesInventors: Michel Costantini, Eric Fache
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Patent number: 5900506Abstract: The present invention relates to a method of processing reaction mixtures obtained from the oxidation reaction of cyclohexane to adipic acid. The processing of the reaction mixture obtained from the direct oxidation of cyclohexane to adipic acid with oxygen, in an organic solvent and in the presence of a catalyst, comprises:(a) a distillation which makes it possible to separate out, on the one hand, a distillate comprising at least some of the most volatile compounds such as the unconverted cyclohexane, the organic solvent, cyclohexanone, cyclohexanol, cyclohexyl esters, lactones and water, and, on the other hand, the distillation residue comprising the diacids formed and the catalyst;(b) the addition of water to the distillation residue in order to form an aqueous solution;(c) crystallization of the adipic acid from the aqueous solution of the distillation residue.Type: GrantFiled: December 12, 1997Date of Patent: May 4, 1999Assignee: R.P. Fiber & Resin IntermediatesInventors: Eric Fache, Philippe LeConte, Gilbert Marin