Patents by Inventor Nicolas Devaux

Nicolas Devaux 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: 8878054
    Abstract: The invention relates to a multilayer film of A/B/C structure comprising: a first layer of composition A, comprising a fluoropolymer; a second layer of composition B, comprising a filled fluoropolymer; and a third layer of composition C, comprising a fluoropolymer, characterized in that the first and third layers have a melting point above 150° C., measured by DSC, and in that the transmittance in visible light is less than 30% for a multilayer film thickness of 25 ?m. The invention also relates to the use of a fluoropolymer-based film preferably for a photovoltaic cell back panel, a high-performance textile or a metal, the film adhering to the substrate by means of an adhesive layer placed between the substrate and the film.
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: November 4, 2014
    Assignee: Arkema France
    Inventors: Stephane Bizet, Anthony Bonnet, Nicolas Devaux, Johann Laffargue, Aude Lapprand
  • Publication number: 20130319510
    Abstract: The present invention relates to a composition comprising a fluoropolymer and two white inorganic fillers, the said composition being intended for the manufacture of thin monolayer films which are opaque to visible light and to UV rays and which can be used in particular in the field of photovoltaic cells. This composition consists of at least one fluoropolymer and of two white inorganic fillers, which are zinc oxide and titanium oxide; they are present in a proportion by weight ranging from 5 to 30% and from 3 to 7.5% respectively, The said composition additionally comprises less than 5% by weight of acrylic polymer, with respect to the total weight of the composition.
    Type: Application
    Filed: September 30, 2011
    Publication date: December 5, 2013
    Applicant: Arkema France
    Inventors: Anthony Bonnet, Nicolas Devaux, Barbara Ramfel, Emmanuel Veret, Stephane Bizet, Gregory S. O'Brien
  • Publication number: 20130112268
    Abstract: The present invention relates to a composition consisting of a fluoropolymer and a white inorganic filler, said composition being intended for the manufacture of monolayer films opaque to visible tight and to UV radiation, useable in particular in the field of photovoltaic cells. The polymeric composition consists of a fluoropolymer and zinc oxide (ZnO), said filler being present in said composition in a weight proportion of 20 to 40%, preferably 20 to 35%. The use of this filler serves on the one hand to avoid the addition of acrylic polymers to the fluoropolymer, and on the other hand, to use processing temperatures that are compatible with the manufacture of a monolayer film by extrusion blow moulding, that is, a temperature of about 220 to 260° C., thereby serving to prevent the degradation of the fluoropolymer.
    Type: Application
    Filed: January 11, 2011
    Publication date: May 9, 2013
    Applicant: Arkema France
    Inventors: Anthony Bonnet, Francois Beaume, Stephane Bizet, Nicolas Devaux
  • Publication number: 20130053498
    Abstract: The present invention relates to a process for forming a polymeric composition composed of a fluoropolymer and of zinc oxide (ZnO) of nanometric size from an acrylic masterbatch. The polymeric composition is intended for the manufacture of films transparent in the visible region and opaque to UV radiation. More particularly, in the composition according to the invention, the filler is present in a proportion by weight of 0.1 to 10%, preferably of 0.5 to 6%, the ZnO particles have a size ranging from 25 to 40 nm, preferably from 30 to 35 nm, these particles have a surface treatment and the said composition is devoid of acrylic polymers.
    Type: Application
    Filed: October 25, 2012
    Publication date: February 28, 2013
    Applicant: Arkema France
    Inventors: Anthony Bonnet, Francois Beaume, Nicolas Devaux, Karine Triballier, Stephane Bizet, Frederic Godefroy
  • Publication number: 20130022806
    Abstract: The present invention relates to multilayer films made of fluoro polymers, which have properties that make them suitable for use in the agricultural field, especially as greenhouse covering films. According to a first aspect, the invention relates to multilayer fluorinated films comprising at least three layers, including a layer A made of a first vinylidene fluoride copolymer with a crystallization temperature TcA, and a layer B made of a second vinylidene fluoride copolymer with a crystallization temperature TcB, TcA being greater than TcB, layers A and B being alternating, layer A being placed to the exterior and layer B between two layers A. Another subject of the invention relates to the use of the film according to the invention as an agricultural covering material, especially as a greenhouse covering.
    Type: Application
    Filed: March 29, 2011
    Publication date: January 24, 2013
    Applicant: Arkema France
    Inventors: Anthony Bonnet, Nicolas Devaux, Stephane Bizet, Nadine Rivas, Frederic Godefroy
  • Publication number: 20130009110
    Abstract: Methods for controlling and improving the conductivity of thermoplastic polymer composites containing CNTs or even for making these materials conductive when they are initially insulating. For example, methods including either injection moulding or extrusion at a temperature above the melting temperature of the polymer, or a subsequent heat treatment step of said composite obtained by injection moulding or extrusion.
    Type: Application
    Filed: July 6, 2012
    Publication date: January 10, 2013
    Applicant: Arkema France
    Inventors: Benoit BRULE, Nicolas Devaux, Patrick M. Piccione, Eric Gamache, Catherine Bluteau, Nour-Eddine El Bounia
  • Publication number: 20120186636
    Abstract: The present invention relates to a polymeric composition composed of a fluoropolymer and of zinc oxide (ZnO) of nanometric size which is intended for the manufacture of films transparent in the visible region and opaque to UV radiation. More particularly, in the composition according to the invention, the said filler is present in a proportion by weight of 0.1 to 10%, preferably of 0.5 to 6%, the ZnO particles have a size ranging from 25 to 40 nm, preferably from 30 to 35 nm, these particles have a surface treatment and the said composition is devoid of acrylic polymers.
    Type: Application
    Filed: August 4, 2010
    Publication date: July 26, 2012
    Applicant: Arkema France
    Inventors: Anthony Bonnet, Francois Beaume, Nicolas Devaux, Karine Triballier, Stephane Bizet, Frederic Godefroy
  • Publication number: 20100084616
    Abstract: The invention relates to methods for controlling and improving the conductivity of thermoplastic polymer composites containing CNTs or even for making these materials conductive when they are initially insulating. The present invention relates to a conductive composite, based on a thermoplastic polymer and on carbon nanotubes (CNTs), and the methods for preparing said conductive composite, the methods comprising either injection moulding or extrusion at a temperature above the melting temperature of the polymer, or a subsequent heat treatment step of said composite obtained by injection moulding or extrusion.
    Type: Application
    Filed: October 1, 2007
    Publication date: April 8, 2010
    Applicant: Arkema France
    Inventors: Benoit Brule, Nicolas Devaux, Patrick M. Piccione, Eric Gamache, Catherine Bluteau, Nour-Eddine El Bounia