Patents by Inventor Françoise Igersheim

Françoise Igersheim 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).

  • Patent number: 9156757
    Abstract: A method for oxidizing hydrocarbons, in particular saturated hydrocarbons, for producing peroxides, alcohols, ketones, aldehydes and/or diacids is described. Also described, is a method for oxidizing a cycloaliphatic saturated hydrocarbon using molecular oxygen for producing ketones/alcohols, and more precisely for oxidizing cyclohexane into cyclohexanol and cyclohexanone using molecular oxygen.
    Type: Grant
    Filed: January 14, 2011
    Date of Patent: October 13, 2015
    Assignee: RHODIA OPERATIONS
    Inventors: Sophie Galinat, Françoise Igersheim, Serge Veracini
  • Patent number: 8853461
    Abstract: A process for preparing a deperoxidation catalyst comprising chromium as the main catalytic element is described. Also described, is a process for preparing an organic solution of a chromic acid ester. The solution can be used as a catalyst in a deperoxidation of an alkyl peroxide in a process for manufacturing cyclohexanol/cyclohexanone by oxidation of cyclohexane.
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: October 7, 2014
    Assignee: Rhodia Operations
    Inventors: Sandra Chouzier, Serge Veracini, Françoise Igersheim
  • Patent number: 8846980
    Abstract: A method for preparing an alkyl hydroperoxide obtained by the oxidation of a saturated hydrocarbon using oxygen, preferably of a saturated cyclic hydrocarbon, is described. Also described, is a method for preparing cyclohexyl hydroperoxide by oxidizing cyclohexane with molecular oxygen or a gas containing molecular oxygen preferably in the absence of a catalyst.
    Type: Grant
    Filed: January 14, 2011
    Date of Patent: September 30, 2014
    Assignee: Rhodia Operations
    Inventors: Françoise Igersheim, Stéphane Streiff, Serge Veracini
  • Publication number: 20130204038
    Abstract: A method for oxidizing hydrocarbons, in particular saturated hydrocarbons, for producing peroxides, alcohols, ketones, aldehydes and/or diacids is described. Also described, is a method for oxidizing a cycloaliphatic saturated hydrocarbon using molecular oxygen for producing ketones/alcohols, and more precisely for oxidizing cyclohexane into cyclohexanol and cyclohexanone using molecular oxygen.
    Type: Application
    Filed: January 14, 2011
    Publication date: August 8, 2013
    Applicant: RHODIA OPERATIONS
    Inventors: Sophie Galinat, Francoise Igersheim, Serge Veracini
  • Publication number: 20130046115
    Abstract: A method for preparing an alkyl hydroperoxide obtained by the oxidation of a saturated hydrocarbon using oxygen, preferably of a saturated cyclic hydrocarbon, is described. Also described, is a method for preparing cyclohexyl hydroperoxide by oxidizing cyclohexane with molecular oxygen or a gas containing molecular oxygen preferably in the absence of a catalyst.
    Type: Application
    Filed: January 14, 2011
    Publication date: February 21, 2013
    Applicant: RHODIA OPERATIONS
    Inventors: Françoise Igersheim, Stéphane Streiff, Serge Veracini
  • Publication number: 20120310012
    Abstract: A process for preparing a deperoxidation catalyst comprising chromium as the main catalytic element is described. Also described, is a process for preparing an organic solution of a chromic acid ester. The solution can be used as a catalyst in a deperoxidation of an alkyl peroxide in a process for manufacturing cyclohexanol/cyclohexanone by oxidation of cyclohexane.
    Type: Application
    Filed: November 18, 2010
    Publication date: December 6, 2012
    Applicant: RHODIA OPERATIONS
    Inventors: Sandra Chouzier, Serge Veracini, Françoise Igersheim
  • Patent number: 6464838
    Abstract: A process for the recovery of compounds present in a mixture containing residues of heavy products is provided. The process includes conducting a reaction and distillation to obtain the compounds and residues and macerating the residues before they can set to mass. The residues can then be destroyed. The process is particularly suitable for the treatment of the residues obtained in the preparation of phenol from cumene.
    Type: Grant
    Filed: July 12, 1999
    Date of Patent: October 15, 2002
    Assignee: Rhodia Chimie
    Inventors: Jean-Jacques Charrin, Francoise Igersheim, Antonio Queiroz
  • Patent number: 6245926
    Abstract: The invention concerns a method for obtaining alkylmonohydrogenohalogenosilanes (AHHS), for example Me2HSiCl.Said AHHS are prepared by redistribution from MeHSiCl2 and Me3HSiCl in the presence of a catalyst such as AlCl3, which can start a parasitic disproportionation which affects the AHHS produced. In order to avoid this, the method consists in using an inhibitor which neutralizes AlCl3 after redistribution, The problem which still prevails and on which the present invention is based is related to the fact that during distillation, which aims at separating the required AHHS, the latter are again subjected to the parasitic disproportionation.
    Type: Grant
    Filed: August 11, 2000
    Date of Patent: June 12, 2001
    Assignee: Rhodia Chimie
    Inventors: Jean-Jacques Charrin, Pascale Colin, Raphael Guinamard, Françoise Igersheim, Gilbert Margeriat
  • Patent number: 4877903
    Abstract: Mixtures containing cyclohexanol and cyclohexanone are produced by oxidizing cyclohexane with air, and then decomposing the cyclohexyl hydroperoxide in such reaction mixture, in the presence of the cyclohexane, to form cyclohexanol and cyclohexanone, such oxidation and/or decomposition being carried out in the presence of a manganese source, a Bronsted acid and a pyridine ligand.
    Type: Grant
    Filed: November 14, 1988
    Date of Patent: October 31, 1989
    Assignee: Rhone-Poulenc Chimie
    Inventors: Michel Costantini, Francoise Igersheim
  • Patent number: 4612401
    Abstract: 4-Hydroxy-2,4,6-trimethyl-2,5-cyclohexadienone is made by chlorinating 2,4,6-trimethylphenol with chlorine in an organic solvent in the absence of base while the hydrogen chloride formed is removed as it is formed by physical means and hydrolyzing the reaction mixture with water optionally in the presence of an inorganic base.
    Type: Grant
    Filed: March 19, 1985
    Date of Patent: September 16, 1986
    Assignee: Rhone-Poulenc Sante
    Inventors: Michel Costantini, Francoise Igersheim, Leon Krumenacker
  • Patent number: 4565895
    Abstract: 4-Hydroxy-2,4,6-trimethyl-2,5-cyclohexadienone is prepared by oxidation of 2,4,6-trimethylphenol with a manganese derivative of valency greater than 2 in an aqueous acidic medium.
    Type: Grant
    Filed: September 21, 1984
    Date of Patent: January 21, 1986
    Assignee: Rhone-Poulenc Sante
    Inventors: Michel Costantini, Francoise Igersheim, Leon Krumenacker
  • Patent number: 4560801
    Abstract: 4-Hydroxy-2,4,6-trimethyl-2,5-cyclohexadienone is prepared by treatment of 2,4,6-trimethylphenol with a halogenation agent and water in the presence of an organic solvent which is inert to the halogenation agent.
    Type: Grant
    Filed: July 10, 1984
    Date of Patent: December 24, 1985
    Assignee: Rhone-Poulenc Sante
    Inventors: Michel Costantini, Francoise Igersheim, Leon Krumenacker