Patents by Inventor Sandra Chouzier

Sandra Chouzier 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).

  • Publication number: 20230150918
    Abstract: The present invention relates to a process for the preparation of hexamethylenediamine by hydrogenation of adiponitrile in the presence of a Raney nickel catalyst, wherein a Raney nickel catalyst modified by treatment with carbon monoxide or carbon dioxide in a liquid medium is used.
    Type: Application
    Filed: March 24, 2021
    Publication date: May 18, 2023
    Inventors: Maxime HUCHEDE, Sandra CHOUZIER
  • Publication number: 20230128673
    Abstract: The present invention relates to a process for the preparation of hexamethylenediamine by hydrogenation of adiponitrile in the presence of a Raney nickel catalyst and a basic co-catalyst containing potassium hydroxide, wherein the basic co-catalyst contains a further basic compound selected from the group consisting of alkaline hydroxides, alkaline earth hydroxides and ammonium hydroxides.
    Type: Application
    Filed: March 24, 2021
    Publication date: April 27, 2023
    Inventors: Maxime HUCHEDE, Sandra CHOUZIER
  • Publication number: 20230043028
    Abstract: The invention relates to a phosphorous containing monomer and a process thereof. Furthermore, the invention relates to a phosphorous containing polymer comprising said monomer and a production process thereof. The phosphorous containing polymer of the invention is useful as flame-retardant polymer. Additionally, the invention relates to a thermoplastic polymer composition comprising said phosphorous containing polymer and optionally a further thermoplastic polymer. The thermoplastic polymer composition can be used for the production of molded articles or yarns having excellent flame-retardant properties in order to ensure adequate fire protection.
    Type: Application
    Filed: December 18, 2020
    Publication date: February 9, 2023
    Inventors: Thierry BADEL, Delphine JOANNES, Sandra CHOUZIER
  • Patent number: 11572330
    Abstract: The present invention concerns a method of oxidizing a cycloalkane to form a product mixture containing a corresponding alcohol and ketone, said method comprising contacting the cycloalkane with a hydroperoxide compound in the presence of a heterogenous catalyst comprising gold.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: February 7, 2023
    Inventors: Sandra Chouzier, Sergio Mastroianni, Avelino Corma, Mercedes Boronat, Javier Tirso Lopez Ausens
  • Patent number: 11306052
    Abstract: The present invention concerns a method of oxidizing a cycloalkane to form a product mixture containing a corresponding alcohol and ketone, said method comprising contacting a cycloalkane with a hydroperoxide compound in the presence of a catalytic effective amount of a cerium oxide based catalyst.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: April 19, 2022
    Assignee: Performance Polyamides, SAS
    Inventors: Sandra Chouzier, Fabien Ocampo, Sergio Mastroianni, Avelino Corma, Mercedes Boronat, Javier Tirso Lopez Ausens
  • Publication number: 20210040025
    Abstract: The present invention concerns a method of oxidizing a cycloalkane to form a product mixture containing a corresponding alcohol and ketone, said method comprising contacting the cycloalkane with a hydroperoxide compound in the presence of a heterogenous catalyst comprising gold.
    Type: Application
    Filed: January 28, 2019
    Publication date: February 11, 2021
    Applicant: BASF SE
    Inventors: Sandra CHOUZIER, Sergio MASTROIANNI, Avelino CORMA, Mercedes BORONAT, Javier Tirso LOPEZ AUSENS
  • Patent number: 9975116
    Abstract: Process for the manufacture of at least one alcohol and/or at least one ketone, which comprises a step during which at least one organic peroxide compound is put into contact with at least one catalyst responding to formula (I) CrNxOy Formula (I) in which x is a number varying from 0.10 to 1.00 and y is a number varying from 0.00 to 1.50, in order to produce the at least one alcohol and/or at least one ketone.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: May 22, 2018
    Assignee: Rhodia Operations
    Inventors: Sandra Chouzier, Luis Fernando Rascon Cruz, Bert Weckhuysen, Sergio Mastroianni
  • Publication number: 20170349524
    Abstract: The present invention concerns a method of oxidizing a cycloalkane to form a product mixture containing a corresponding alcohol and ketone, said method comprising contacting a cycloalkane with a hydroperoxide compound in the presence of a catalytic effective amount of a cerium oxide based catalyst.
    Type: Application
    Filed: December 18, 2015
    Publication date: December 7, 2017
    Inventors: Sandra CHOUZIER, Fabien OCAMPO, Sergio MASTROIANNI, Avelino CORMA, Mercedes BORONAT, Javier Tirso LOPEZ AUSENS
  • Publication number: 20170266651
    Abstract: Process for the manufacture of at least one alcohol and/or at least one ketone, which comprises a step during which at least one organic peroxide compound is put into contact with at least one catalyst responding to formula (I) CrNxOy Formula (I) in which x is a number varying from 0.10 to 1.00 and y is a number varying from 0.00 to 1.50, in order to produce the at least one alcohol and/or at least one ketone.
    Type: Application
    Filed: November 20, 2015
    Publication date: September 21, 2017
    Inventors: Sandra CHOUZIER, Luis Fernando RASCON CRUZ, Bert WECKHUYSEN, Sergio MASTROIANNI
  • 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: 8846975
    Abstract: A process for preparing dicarboxylic acids is described. More particularly a process is described for preparing adipic acid (1,6-hexanedioic acid), by the action of nitric acid, starting from cyclic ketones or alcohols which are the corresponding compounds from the standpoint of the number of carbon atoms, in the presence of one or more oxides of nitrogen at a molar concentration in the reaction mixture of greater than 2.5 mmol per kg of reaction mixture.
    Type: Grant
    Filed: May 9, 2011
    Date of Patent: September 30, 2014
    Assignee: Rhodia Operations
    Inventors: Sandra Chouzier, Gérard Mignani, Simon Rousseau, Flavie Sarrazin, Sergio Mastroianni
  • Publication number: 20130109886
    Abstract: A process for preparing dicarboxylic acids is described. More particularly a process is described for preparing adipic acid (1,6-hexanedioic acid), by the action of nitric acid, starting from cyclic ketones or alcohols which are the corresponding compounds from the standpoint of the number of carbon atoms, in the presence of one or more oxides of nitrogen at a molar concentration in the reaction mixture of greater than 2.5 mmol per kg of reaction mixture.
    Type: Application
    Filed: May 9, 2011
    Publication date: May 2, 2013
    Applicant: RHODIA OPERATIONS
    Inventors: Sandra Chouzier, Gérard Mignani, Simon Rousseau, Flavie Sarrazin, Sergio Mastroianni
  • 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