Patents by Inventor Christophe Le Mercier

Christophe Le Mercier 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).

  • Method for preparing ?-phosphorus nitroxide radicals
    Patent number: 7126021
    Abstract: The present invention relates to a process for the preparation of ?-phosphorated nitroxide radicals which consist in preparing, in a first step, an aminophosphonate by reaction of a carbonyl compound, of a primary amine and of a phosphorous compound in the presence of a Lewis acid and then, in a second step, in oxidizing the said crude aminophosphonate using nonhalogenated organic peracids in a water/organic solvent two-phase medium with an aqueous phase buffered at a pH ranging from 5 to 12.
    Type: Grant
    Filed: December 7, 2001
    Date of Patent: October 24, 2006
    Assignee: Arkema (formerly Atofina)
    Inventors: Olivier Guerret, Jean-Luc Couturier, Christophe Le Mercier
  • Method for preparing $g(b)-phosphorus nitroxide radicals
    Publication number: 20040077873
    Abstract: The present invention relates to a process for the preparation of &bgr;-phosphorated nitroxide radicals which consist in preparing, in a first step, an aminophosphonate by reaction of a carbonyl compound, of a primary amine and of a phosphorous compound in the presence of a Lewis acid and then, in a second step, in oxidizing the said crude aminophosphonate using nonhalogenated organic peracids in a water/organic solvent two-phase medium with an aqueous phase buffered at a pH ranging from 5 to 12.
    Type: Application
    Filed: November 4, 2003
    Publication date: April 22, 2004
    Inventors: Olivier Guerret, Jean-Luc Couturier, Christophe Le Mercier
  • Polyalcoxyamines obtained from &bgr;-substituted nitroxides
    Patent number: 6657043
    Abstract: The invention relates to polyalcoxyamines obtained from beta-substituted nitroxides of formula (1) wherein A represents a di- or polyvalent structure, R1 represents a molar mass of more than 15 and is a monovalent radical, and n>2. The inventive compounds can be used as initiators for (co)polymerizations of at least one radically polymerizable monomer.
    Type: Grant
    Filed: March 15, 2002
    Date of Patent: December 2, 2003
    Assignee: Atofina
    Inventors: Olivier Guerret, Jean-Luc Couturier, Jean-Francois Lutz, Christophe Le Mercier, Sophie Robin, Bruno Vuillemin
  • Alkoxyamines derived from &bgr;-phosphorous nitroxides
    Patent number: 6569967
    Abstract: The invention concerns alkoxyamines derived from &bgr;-phosphorous nitroxides corresponding to formula (I). Said compounds can be used as (co)polymerization initiators of at least a monomer polymerizable by radical polymerization.
    Type: Grant
    Filed: March 19, 2002
    Date of Patent: May 27, 2003
    Assignee: Atofina
    Inventors: Jean-Luc Couturier, Christiane Henriet-Bernard, Christophe Le Mercier, Paul Tordo, Jean-Francois Lutz