Patents by Inventor Virginie Boucher

Virginie Boucher 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 of preparing a transparent polumer material comprising a thermoplastic polycarbonate and mineral nanoparticles
    Patent number: 9284422
    Abstract: A method of preparing a transparent polymer material includes mixing mineral nanoparticles selected from nanoparticles of alkaline-earth metal carbonates, alkaline-earth metal sulfates, metallic oxides, oxides of metalloids, and siloxanes, and a composition A including at least one thermoplastic polymer in the molten state selected from polycarbonate (PC), polystyrene (PS) and polymethyl methacrylate (PMMA) in order to obtain a master-batch, the mixture of step i) including at least 25% and at most 75% by weight of the mineral nanoparticles. The master-batch obtained in step i) is mixed with a composition B of a thermoplastic polycarbonate matrix (PCm) in the molten state, to obtain a transparent polymer material including at most 10% by weight of the mineral nanoparticles, preferably at most 5% by weight of the mineral nanoparticles.
    Type: Grant
    Filed: December 9, 2008
    Date of Patent: March 15, 2016
    Assignees: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE), RENAULT S.A.S.; SOLVAY SA
    Inventors: Virginie Boucher, Alexandra Roos, Sophie Duquesne, Serge Bourbigot, Laure Meynie, Karine Cavalier, Didier Sy, Marc Lacroix
  • Method for preparing a transparent polymer material including mineral nanoparticles with a shape factor strictly higher than 1.0
    Patent number: 8278382
    Abstract: The present invention provides a method of preparing a transparent polymer material, the method comprising steps i) and ii) in any order, the steps consisting in: i) mixing: mineral nanoparticles having a form factor strictly greater than 1.0; and a polymer matrix comprising a quantity of at least 80% by weight of a polycarbonate (PC) first thermoplastic polymer and of a second transparent thermoplastic polymer other than the first thermoplastic polymer, in order to obtain a mixture; and ii) heating the polymer matrix to the molten state, on its own or in the mixture; to obtain the transparent, polymer material, the mixture of step i) comprising a quantity of mineral nanoparticles having a form factor strictly greater than 1.0 that is strictly less than 5% by weight.
    Type: Grant
    Filed: November 27, 2009
    Date of Patent: October 2, 2012
    Assignees: Renault S.A.S., Essilor International (Compagnie Generale d'Optique), Solvay SA
    Inventors: Virginie Boucher, Sophie Duquesne, Serge Bourbigot, Didier Sy, Marc Lacroix, Alexandra Roos, Nathalie Cornet, Laure Meynie
  • METHOD FOR PREPARING A TRANSPARENT POLYMER MATERIAL INCLUDING MINDERAL NANOPARTICLES WITH A SHAPE FACTOR STRICTLY HIGHER THAN 1.0
    Publication number: 20110281989
    Abstract: The present invention provides a method of preparing a transparent polymer material, the method comprising steps i) and ii) in any order, the steps consisting in: i) mixing: mineral nanoparticles having a form factor strictly greater than 1.0; and a polymer matrix comprising a quantity of at least 80% by weight of a polycarbonate (PC) first thermoplastic polymer and of a second transparent thermoplastic polymer other than the first thermoplastic polymer, in order to obtain a mixture; and ii) heating the polymer matrix to the molten state, on its own or in the mixture; to obtain the transparent, polymer material, the mixture of step i) comprising a quantity of mineral nanoparticles having a form factor strictly greater than 1.0 that is strictly less than 5% by weight.
    Type: Application
    Filed: November 27, 2009
    Publication date: November 17, 2011
    Inventors: Virginie Boucher, Sophie Duquesne, Serge Bourbigot, Didier Sy, Marc Lacroix, Alexandra Roos, Nathalie Cornet, Laure Meynie
  • METHOD OF PREPARING A TRANSPARENT POLUMER MATERIAL COMPRISING A THERMOPLASTIC POLYCARBONATE AND MINDERAL NANOPARTICLES
    Publication number: 20110034588
    Abstract: A method of preparing a transparent polymer material includes mixing mineral nanoparticles selected from nanoparticles of alkaline-earth metal carbonates, alkaline-earth metal sulfates, metallic oxides, oxides of metalloids, and siloxanes, and a composition A including at least one thermoplastic polymer in the molten state selected from polycarbonate (PC), polystyrene (PS) and polymethyl methacrylate (PMMA) in order to obtain a master-batch, the mixture of step i) including at least 25% and at most 75% by weight of the mineral nanoparticles. The master-batch obtained in step i) is mixed with a composition B of a thermoplastic polycarbonate matrix (PCm) in the molten state, to obtain a transparent polymer material including at most 10% by weight of the mineral nanoparticles, preferably at most 5% by weight of the mineral nanoparticles.
    Type: Application
    Filed: December 9, 2008
    Publication date: February 10, 2011
    Inventors: Virginie Boucher, Alexandra Roos, Sophie Duquesne, Serge Bourbigot, Laure Meynie, Karine Cavalier, Didier Sy, Marc Lacroix