Patents by Inventor Geraldine Cavallini

Geraldine Cavallini 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: 8946493
    Abstract: The present invention relates to a method for producing 1,2,3,3,3-pentafluoropropane, involving reacting gaseous phase 1,2,3,3,3-pentafluoropropene with hydrogen in a superstoichimetric amount in the presence of a hydrogenation catalyst in a reactor, and recirculating a part of the gaseous effluent from the reactor.
    Type: Grant
    Filed: May 6, 2010
    Date of Patent: February 3, 2015
    Assignee: Arkema France
    Inventors: Michel Devic, Nicolas Doucet, Laurent Wendlinger, Geraldine Cavallini
  • Patent number: 8912370
    Abstract: The present invention relates to a method for producing 1,1,1,2,3,3-hexaafluoropropane, involving reacting gaseous phase hexafluoropropene with hydrogen in a superstoichimetric amount in the presence of a hydrogenation catalyst in a reactor, and recirculating a part of the gaseous effluent from the reactor.
    Type: Grant
    Filed: May 5, 2010
    Date of Patent: December 16, 2014
    Assignee: Arkema France
    Inventors: Michel Devic, Nicolas Doucet, Laurent Wendlinger, Geraldine Cavallini
  • Patent number: 8779217
    Abstract: The invention relates to a method for preparing fluoropropenes of formula (I) CF3CF?CHR, where R is a hydrogen or a fluorine atom from at least one compound of formula (Ia) CF3CF?CFR, where R has the same meaning as in formula (I), said method including the following steps: (i) hydrogenating at least one compound of formula (Ia) in an adiabatic reactor in the presence of a catalyst with a superstoichiometric amount of hydrogen so as to produce a hydrofluoropropane; (ii) partially condensing the flow from the adiabatic reactor of step (i) so as to produce a gaseous phase fraction, including unreacted hydrogen and a portion of the formed hydrofluoropropane, which is recirculated to step (i), and a liquid phase fraction including the residue of the hydrofluoropropane; (iii) dehydrofluorinating hydrofluoropropane from the liquid fraction of step (ii) using potassium hydroxide in an aqueous reaction medium contained in an agitated reactor so as to produce the fluoropropene of formula (I); and (iv) purifying the fl
    Type: Grant
    Filed: May 21, 2010
    Date of Patent: July 15, 2014
    Assignee: Arkema France
    Inventors: Michel Devic, Nicolas Doucet, Laurent Wendlinger, Geraldine Cavallini, Pierre-Marie Sedat, Karine Avril
  • Patent number: 8269052
    Abstract: The invention relates to a method for producing pentafluoroethane, and especially to a method comprising (i) a step during which perchloroethylene and optionally 2,2-dichloro-1,1,1-trifluoroethane and/or 2-chloro-1,1,1,2-tetrafluoroethane react(s) with hydrofluoric acid in a gaseous phase in the presence of a catalyst in an adiabatic multi-stage reactor, and optionally (ii) a step of separating the flow produced in step (i) in order to obtain a fraction of light products and a fraction of heavy products.
    Type: Grant
    Filed: May 9, 2007
    Date of Patent: September 18, 2012
    Assignee: Arkema France
    Inventors: Bertrand Collier, Géraldine Cavallini, Béatrice Boussand
  • Publication number: 20120136183
    Abstract: The invention relates to a method for preparing fluoropropenes of formula (I) CF3CF?CHR, where R is a hydrogen or a fluorine atom from at least one compound of formula (Ia) CF3CF?CFR, where R has the same meaning as in formula (I), said method including the following steps: (i) hydrogenating at least one compound of formula (Ia) in an adiabatic reactor in the presence of a catalyst with a superstoichiometric amount of hydrogen so as to produce a hydrofluoropropane; (ii) partially condensing the flow from the adiabatic reactor of step (i) so as to produce a gaseous phase fraction, including unreacted hydrogen and a portion of the formed hydrofluoropropane, which is recirculated to step (i), and a liquid phase fraction including the residue of the hydrofluoropropane; (iii) dehydrofluorinating hydrofluoropropane from the liquid fraction of step (ii) using potassium hydroxide in an aqueous reaction medium contained in an agitated reactor so as to produce the fluoropropene of formula (I); and (iv) purifying the fl
    Type: Application
    Filed: May 21, 2010
    Publication date: May 31, 2012
    Applicant: Arkema France
    Inventors: Michel Devic, Nicolas Doucet, Laurent Wendlinger, Geraldine Cavallini, Pierre-Marie Sedat, Karine Avril
  • Publication number: 20120101315
    Abstract: The present invention relates to a method for producing 1,2,3,3,3-pentafluoropropane, involving reacting gaseous phase 1,2,3,3,3-pentafluoropropene with hydrogen in a superstoichimetric amount in the presence of a hydrogenation catalyst in a reactor, and recirculating a part of the gaseous effluent from the reactor.
    Type: Application
    Filed: May 6, 2010
    Publication date: April 26, 2012
    Applicant: Arkema France
    Inventors: Michel Devic, Nicolas Doucet, Laurent Wendlinger, Geraldine Cavallini
  • Publication number: 20120101314
    Abstract: The present invention relates to a method for producing 1,1,1,2,3,3-hexaafluoropropane, involving reacting gaseous phase hexafluoropropene with hydrogen in a superstoichimetric amount in the presence of a hydrogenation catalyst in a reactor, and recirculating a part of the gaseous effluent from the reactor.
    Type: Application
    Filed: May 5, 2010
    Publication date: April 26, 2012
    Applicant: Arkema France
    Inventors: Michel Devic, Nicolas Doucet, Laurent Wendlinger, Geraldine Cavallini
  • Publication number: 20090326284
    Abstract: The invention relates to a method for producing pentafluoroethane, and especially to a method comprising (i) a step during which perchloroethylene and optionally 2,2-dichloro-1,1,1-trifluoroethane and/or 2-chloro-1,1,1,2-tetrafluoroethane react(s) with hydrofluoric acid in a gaseous phase in the presence of a catalyst in an adiabatic multi-stage reactor, and optionally (ii) a step of separating the flow produced in step (i) in order to obtain a fraction of light products and a fraction of heavy products.
    Type: Application
    Filed: May 9, 2007
    Publication date: December 31, 2009
    Applicant: Arkema France
    Inventors: Bertrand Collier, Géraldine Cavallini, Béatrice Boussand