Patents by Inventor Vincent Wilmet

Vincent Wilmet 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).

  • Process for obtaining a purified hydrofluoroalkane
    Patent number: 7750195
    Abstract: Process for obtaining a hydrofluoroalkane which is purified of organic impurities, according to which the hydrofluoroalkane containing organic impurities is subjected to at least one purification treatment chosen from (a) a treatment with chlorine in the presence of a initiator (b) a reaction with hydrogen fluoride (c) a distillation in which the purified hydrofluoroalkane is removed from the top of the distillation column or from the side (d) an extractive distillation (e) an adsorption onto a solid adsorbent (f) a reaction with a compound containing oxygen, and (g) a reaction with a compound containing oxygen and a gas-phase reaction with a reagent capable of reacting with at least some of the organic impurities, with the exception of a reaction with elemental chlorine.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: July 6, 2010
    Assignee: Solvay S.A.
    Inventors: Vincent Wilmet, Francine Janssens, Lionel Casaubon Seignour, Philippe Krafft, Alain Lambert, Olivier Buyle
  • Process for separation of a mixture comprising at least one hydrofluoroalkane
    Patent number: 7566809
    Abstract: Process for the separation of a mixture comprising at least one hydrofluoroalkane and hydrogen fluoride, according to which a hydrofluoroalkane/hydrogen fluoride mixture is reacted with at least one chlorinated or chlorofluorinated precursor of the hydrofluoroalkane. Process for the preparation of a hydrofluoroalkane comprising such a separation, in combination with a catalytic reaction stage. Azeotropic compositions.
    Type: Grant
    Filed: May 25, 2007
    Date of Patent: July 28, 2009
    Assignee: Solvay S.A.
    Inventors: Alain Lambert, Vincent Wilmet
  • PROCESS FOR OBTAINING A PURIFIED HYDROFLUOROALKANE
    Publication number: 20090099394
    Abstract: Process for obtaining a hydrofluoroalkane which is purified of organic impurities, according to which the hydrofluoroalkane containing organic impurities is subjected to at least one purification treatment chosen from (a) a treatment with chlorine in the presence of a initiator (b) a reaction with hydrogen fluoride (c) a distillation in which the purified hydrofluoroalkane is removed from the top of the distillation column or from the side (d) an extractive distillation (e) an adsorption onto a solid adsorbent (f) a reaction with a compound containing oxygen, and (g) a reaction with a compound containing oxygen and a gas-phase reaction with a reagent capable of reacting with at least some of the organic impurities, with the exception of a reaction with elemental chlorine.
    Type: Application
    Filed: December 22, 2008
    Publication date: April 16, 2009
    Applicant: SOLVAY S.A.
    Inventors: Vincent Wilmet, Francine Janssens, Lionel Casaubon Seignour, Philippe Krafft, Alain Lambert, Olivier Buyle
  • Process for obtaining a purified hydrofluoroalkane
    Patent number: 7468467
    Abstract: Process for obtaining a hydrofluoroalkane which is purified of organic impurities, according to which the hydrofluoroalkane containing organic impurities is subjected to at least one purification treatment chosen from (a) a treatment with chlorine in the presence of a initiator (b) a reaction with hydrogen fluoride (c) a distillation in which the purified hydrofluoroalkane is removed from the top of the distillation column or from the side (d) an extractive distillation (e) an adsorption onto a solid adsorbent (f) a reaction with a compound containing oxygen, and (g) a reaction with a compound containing oxygen and a gas-phase reaction with a reagent capable of reacting with at least some of the organic impurities, with the exception of a reaction with elemental chlorine.
    Type: Grant
    Filed: January 3, 2007
    Date of Patent: December 23, 2008
    Assignee: Solvay S.A.
    Inventors: Vincent Wilmet, Francine Janssens, Lionel Casaubon Seignour, Philippe Krafft, Alain Lambert, Olivier Buyle
  • PROCESS FRO SEPARATION OF A MIXTURE COMPRISING AT LEAST ONE HYDROFLUOROALKANE
    Publication number: 20080033219
    Abstract: Process for the separation of a mixture comprising at least one hydrofluoroalkane and hydrogen fluoride, according to which a hydrofluoroalkane/hydrogen fluoride mixture is reacted with at least one chlorinated or chlorofluorinated precursor of the hydrofluoroalkane. Process for the preparation of a hydrofluoroalkane comprising such a separation, in combination with a catalytic reaction stage. Azeotropic compositions.
    Type: Application
    Filed: May 25, 2007
    Publication date: February 7, 2008
    Applicant: SOLVAY S.A.
    Inventors: Alain Lambert, Vincent Wilmet
  • Process for the separation of a mixture comprising at least one hydrofluoroalkane
    Patent number: 7223892
    Abstract: Process for the separation of a mixture comprising at least one hydrofluoroalkane and hydrogen fluoride, according to which a hydrofluoroalkane/hydrogen fluoride mixture is reacted with at least one chlorinated or chlorofluorinated precursor of the hydrofluoroalkane. Process for the preparation of a hydrofluoroalkane comprising such a separation, in combination with a catalytic reaction stage. Azeotropic compositions.
    Type: Grant
    Filed: June 28, 2006
    Date of Patent: May 29, 2007
    Assignee: Solvay S.A.
    Inventors: Alain Lambert, Vincent Wilmet
  • Process for obtaining a purified hydrofluoroalkane
    Publication number: 20070112231
    Abstract: Process for obtaining a hydrofluoroalkane which is purified of organic impurities, according to which the hydrofluoroalkane containing organic impurities is subjected to at least one purification treatment chosen from (a) a treatment with chlorine in the presence of a initiator (b) a reaction with hydrogen fluoride (c) a distillation in which the purified hydrofluoroalkane is removed from the top of the distillation column or from the side (d) an extractive distillation (e) an adsorption onto a solid adsorbent (f) a reaction with a compound containing oxygen, and (g) a reaction with a compound containing oxygen and a gas-phase reaction with a reagent capable of reacting with at least some of the organic impurities, with the exception of a reaction with elemental chlorine.
    Type: Application
    Filed: January 3, 2007
    Publication date: May 17, 2007
    Applicant: SOLVAY S.A.
    Inventors: Vincent Wilmet, Francine Janssens, Lionel Seignour, Philippe Krafft, Alain Lambert, Olivier Buyle
  • Process for obtaining a purified hydrofluoroalkane
    Patent number: 7179949
    Abstract: Process for obtaining a hydrofluoroalkane which is purified of organic impurities, according to which the hydrofluoroalkane containing organic impurities is subjected to at least one purification treatment chosen from (a) a treatment with chlorine in the presence of a initiator (b) a reaction with hydrogen fluoride (c) a distillation in which the purified hydrofluoroalkane is removed from the top of the distillation column or from the side (d) an extractive distillation (e) an adsorption onto a solid adsorbent (f) a reaction with a compound containing oxygen, and (g) a reaction with a compound containing oxygen and a gas-phase reaction with a reagent capable of reacting with at least some of the organic impurities, with the exception of a reaction with elemental chlorine.
    Type: Grant
    Filed: August 10, 2001
    Date of Patent: February 20, 2007
    Assignee: Solvay (Societe Anonyme)
    Inventors: Vincent Wilmet, Francine Janssens, Lionel Casaubon Seignour, Philippe Krafft, Alain Lambert, Olivier Buyle
  • Process for the separation of a mixture comprising at least one hydrofluoroalkane
    Publication number: 20070021635
    Abstract: Process for the separation of a mixture comprising at least one hydrofluoroalkane and hydrogen fluoride, according to which a hydrofluoroalkane/hydrogen fluoride mixture is reacted with at least one chlorinated or chlorofluorinated precursor of the hydrofluoroalkane. Process for the preparation of a hydrofluoroalkane comprising such a separation, in combination with a catalytic reaction stage. Azeotropic compositions.
    Type: Application
    Filed: June 28, 2006
    Publication date: January 25, 2007
    Applicant: SOLVAY S.A.
    Inventors: Alain Lambert, Vincent Wilmet
  • Process for the separation of a mixture comprising at least one hydrofluoroalkane and hydrogen fluoride, processes for the preparation of a hydrofluoroalkane and azeotropic compositions
    Patent number: 7074434
    Abstract: Process for the separation of a mixture comprising at least one hydrofluoroalkane and hydrogen fluoride, according to which a hydrofluoroalkane/hydrogen fluoride mixture is reacted with at least one chlorinated or chlorofluorinated precursor of the hydrofluoroalkane. Process for the preparation of a hydrofluoroalkane comprising such a separation, in combination with a catalytic reaction stage. Azeotropic compositions.
    Type: Grant
    Filed: October 29, 2002
    Date of Patent: July 11, 2006
    Assignee: Solvay (Societe Anonyme)
    Inventors: Alain Lambert, Vincent Wilmet
  • Method for preparing a hydro(chloro)fluoroalkane and catalyst
    Patent number: 7067706
    Abstract: Process for the preparation of a hydro(chloro)fluoroalkane according to which a halogenated precursor of the hydro(chloro)fluoroalkane is reacted with hydrogen fluoride in the presence of a catalyst comprising chromium (Cr) and at least one other metal selected from the group consisting of aluminium, barium, bismuth, calcium, cerium, copper, iron, magnesium, strontium, vanadium and zirconium.
    Type: Grant
    Filed: April 9, 2001
    Date of Patent: June 27, 2006
    Assignee: Solvay (Societe Anonyme)
    Inventors: Vincent Wilmet, Francine Janssens
  • Pentafluoroethane production method
    Patent number: 7067707
    Abstract: Process for the manufacture of pentafluoroethane, according to which tetrafluoroethylene is subjected to reaction with an organic nitrogenous base hydrofluoride at a temperature of greater than 100° C. and not exceeding 160° C.
    Type: Grant
    Filed: August 22, 2003
    Date of Patent: June 27, 2006
    Assignee: Solvay (Societe Anonyme)
    Inventors: Eberhard Piepho, Vincent Wilmet, Olivier Buyle
  • Pentafluoroethane production method
    Publication number: 20060041174
    Abstract: Process for the manufacture of pentafluoroethane, according to which tetrafluoroethylene is subjected to reaction with an organic nitrogenous base hydrofluoride at a temperature of greater than 100° C. and not exceeding 160° C.
    Type: Application
    Filed: August 22, 2003
    Publication date: February 23, 2006
    Applicant: Solvay S.A.
    Inventors: Eberhard Piepho, Vincent Wilmet, Olivier Buyle
  • Process for the preparation of 1,1,1,3,3-pentafluoropropane
    Publication number: 20050256348
    Abstract: 1,1,1,3,3-pentafluoropropane is produced by reaction between 1,1,1,3,3-pentachloropropane and hydrogen fluoride in the presence of a hydrofluorination catalyst. The 1,1,1,3,3-pentachloropropane may advantageously be obtained by reaction between vinyl chloride and tetrachloromethane in the presence of a telomerization catalyst and of a nitrile.
    Type: Application
    Filed: July 19, 2005
    Publication date: November 17, 2005
    Applicant: SOLVAY S.A.
    Inventors: Vincent Wilmet, Francine Janssens, Jean-Paul Schoebrechts
  • Process for the preparation of 1.1.1.3.3-pentafluoropropane
    Patent number: 6930215
    Abstract: 1,1,1,3,3-pentafluoropropane is produced by reaction between 1,1,1,3,3-pentachloropropane and hydrogen fluoride in the presence of a hydrofluorination catalyst. The 1,1,1,3,3-pentachloropropane may advantageously be obtained by reaction between vinyl chloride and tetrachloromethane in the presence of a telomerization catalyst and of a nitrile.
    Type: Grant
    Filed: July 3, 2003
    Date of Patent: August 16, 2005
    Assignee: Solvey (Societe Anonyme)
    Inventors: Vincent Wilmet, Francine Janssens, Jean-Paul Schoebrechts
  • Process for producing and purifying 1,1-difluoroethane, and product thus obtained
    Publication number: 20050107647
    Abstract: 1,1-Difluoroethane containing less than 10 mg/kg of vinyl chloride is obtained by treatment, with hydrogen fluoride, of a crude 1,1-difluoroethane containing less than 1 mol of hydrogen chloride per mole of 1,1-difluoroethane.
    Type: Application
    Filed: October 7, 2004
    Publication date: May 19, 2005
    Applicant: SOLVAY S.A.
    Inventors: Charles-Marie Anciaux, Vincent Wilmet, Dominique Lecroc
  • Process for producing and purifying 1,1-difluoroethane, and product thus obtained
    Patent number: 6849772
    Abstract: 1,1-Difluoroethane containing less than 10 mg/kg of vinyl chloride is obtained by treatment, with hydrogen fluoride, of a crude 1,1-difluoroethane containing less than 1 mol of hydrogen chloride per mole of 1,1-difluoroethane.
    Type: Grant
    Filed: October 7, 2002
    Date of Patent: February 1, 2005
    Assignee: Solvay (Societe Anonyme)
    Inventors: Charles-Marie Anciaux, Vincent Wilmet, Dominique Lecroc
  • Hydrofluorination catalyst and method
    Patent number: 6841706
    Abstract: Hydrofluorination catalyst based on a chromium oxide which is poor in ammonium salts.
    Type: Grant
    Filed: October 11, 1999
    Date of Patent: January 11, 2005
    Assignee: Solvay (Societe Anonyme)
    Inventors: Vincent Wilmet, Georges Lejeune
  • Method for preparing 1,1,1,3,3-pentafluoropropane
    Patent number: 6730817
    Abstract: 1,1,1,3,3-Pentafluoropropane is produced by reaction between 1,1,1,3,3-pentachloropropane and hydrogen fluoride in the presence of a hydrofluorination catalyst. The 1,1,1,3,3-pentachloropropane may advantageously be obtained by reaction between vinyl chloride and tetrachloromethane in the presence of a telomerization catalyst and of a nitrile.
    Type: Grant
    Filed: June 8, 1998
    Date of Patent: May 4, 2004
    Assignee: Solvay (Societe Anonyme)
    Inventors: Vincent Wilmet, Francine Janssens, Jean-Paul Schoebrechts
  • Process for obtaining a purified hydrofluoroalkane
    Publication number: 20040030204
    Abstract: Process for obtaining a hydrofluoroalkane which is purified of organic impurities, according to which the hydrofluoroalkane containing organic impurities is subjected to at least one purification treatment chosen from
    Type: Application
    Filed: May 12, 2003
    Publication date: February 12, 2004
    Inventors: Vincent Wilmet, Francine Janssens, Lionel Casaubon Seignour, Philippe Krafft, Alain Lambert, Olivier Buyle