Patents by Inventor Véronique Mathieu

Véronique Mathieu 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 the production of fluorine containing alpha-hydroxy carboxylic acids
    Publication number: 20100015675
    Abstract: A process for the production of a fluorine containing ?-hydroxy carboxylic acid by hydrolyzing a fluorine containing ?-hydroxy nitrite in the presence of a nitrilase.
    Type: Application
    Filed: July 18, 2007
    Publication date: January 21, 2010
    Applicant: SOLVAY FLUOR GMBH
    Inventors: Max Braun, Valérie Lejeune, Véronique Mathieu
  • Process for the synthesis of fluoroorganic compounds
    Patent number: 7304191
    Abstract: The present invention relates to a fluorination method for the synthesis of halofluoroorganic compounds which can be used, inter alia, as precursors in the synthesis of 2,3-unsaturated fluoroorganic carbonyl compounds comprising a fluorine substituent in the 2 position.
    Type: Grant
    Filed: August 6, 2001
    Date of Patent: December 4, 2007
    Assignee: Solvay (Societe Anonyme)
    Inventors: Véronique Mathieu, Francine Janssens, James Franklin
  • Method for preparing a halogenated olefin
    Patent number: 7109386
    Abstract: Process for the preparation of a halogenated olefin by reaction of an alkyne and/or of an allene compound with a hydrogen halide in a liquid medium comprising at least one hydrohalogenation catalyst comprising at least one palladium compound.
    Type: Grant
    Filed: March 20, 2002
    Date of Patent: September 19, 2006
    Assignee: Solvay (Societe Anonyme)
    Inventor: Véronique Mathieu
  • Process for preparing halogenated hydrocarbons
    Patent number: 6500993
    Abstract: Process for preparing halogenated hydrocarbons, comprising at least 3 carbon atoms, by catalytic telomerization between a haloalkane and an olefin in the presence of an amine with a high boiling point as co-catalyst. 1,1,1,3,3-Pentachloropropane and 1,1,1,3,3-pentachlorobutane are thus prepared under mild conditions in good yield and the catalyst/co-catalyst system can be easily separated by distillation and recycled.
    Type: Grant
    Filed: November 3, 1999
    Date of Patent: December 31, 2002
    Assignee: Solvay (Societe Anonyme)
    Inventors: Véronique Mathieu, Jean-Paul Schoebrechts
  • Process for preparing halohydrocarbons in the presence of a co-catalyst
    Patent number: 6452057
    Abstract: Halohydrocarbons comprising at least 3 carbon atoms are obtained by batchwise reaction between a haloalkane and an olefin in the presence of a catalyst and a co-catalyst. The addition of at least some of the co-catalyst is carried out gradually. At least some of the co-catalyst is recovered with a view to its re-use.
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: September 17, 2002
    Assignee: Solvay (Societe Anonyme)
    Inventors: Alain Lambert, Véronique Mathieu, Charles-Marie Anciaux
  • Method for preparing of halogenated hydrocarbons
    Patent number: 6441256
    Abstract: Halohydrocarbons comprising at least 3 carbon atoms are obtained by reaction between a haloalkane and a haloolefin, in the substantial absence of nitrile, and by introducing the reactants in a molar ratio between the haloalkane and the haloolefin of less than 2. 1,1,1,3,3-Pentachloropropane can thus be obtained in good voluminal yield.
    Type: Grant
    Filed: March 20, 2000
    Date of Patent: August 27, 2002
    Assignee: Solvay (Societe Anonyme)
    Inventors: Véronique Mathieu, Francine Janssens
  • Method for the preparation of 1,1,1,3,3-pentachlorobutane
    Patent number: 6399840
    Abstract: 1,1,1,3,3-pentachlorobutane is obtained by reacting carbon tetrachloride with 2-chloro-1-propene in the presence of at least one copper (I) or (II) compound as telomerization catalyst. Advantageously, a polar compound can be present in the reaction mixture as solvent, and an amine, an amide or a trialkylphosphine oxide can be present as cocatalyst.
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: June 4, 2002
    Assignee: Solvay (Societe Anonyme)
    Inventors: Jean-Paul Schoebrechts, Véronique Mathieu, Francine Janssens
  • Method for preparing halogenated hydrocarbons
    Patent number: 6399839
    Abstract: Halohydrocarbons comprising at least 3 carbon atoms are obtained by reaction between a haloalkane and an olefin in the presence of an organocopper compound as catalyst, a solvent and/or a cocatalyst. 1,1,1,3,3-Penta-chloropropane can thus be obtained in good yield under mild conditions.
    Type: Grant
    Filed: November 3, 1999
    Date of Patent: June 4, 2002
    Assignee: Solvay (Societe Anonyme)
    Inventors: Véronique Mathieu, Francine Janssens
  • Process for preparing halohydrocarbons
    Patent number: 6369285
    Abstract: Halohydrocarbons containing at least 3 carbon atoms are obtained by reaction between a haloalkane and an olefin in the presence of a catalyst in a reaction medium which is essentially free of water.
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: April 9, 2002
    Assignee: Solvay (Societe Anonyme)
    Inventors: Véronique Mathieu, Charles-Marie Anciaux
  • Hydrogenation catalysts, method for making same and use thereof for preparing hydrogen peroxide
    Patent number: 6306359
    Abstract: Hydrogenation catalysts based on palladium, platinum or rhodium comprising at least one other metal M which are deposited on zirconium oxide and silicon oxide supports. Process for the manufacture of these catalysts by successive impregnation of the support using palladium, platinum or rhodium and using another metal M. Use of these catalysts in hydrogenation reactions and in particular in preparing hydrogen peroxide.
    Type: Grant
    Filed: June 22, 1999
    Date of Patent: October 23, 2001
    Assignee: Solvay Interox (Societe Anon.)
    Inventors: Véronique Mathieu, Pascal Pennetreau, Noel Vanlautem