Patents by Inventor Pierre-emmanuel Dufils

Pierre-emmanuel Dufils 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).

  • Publication number: 20220041917
    Abstract: The present invention relates to a method of inhibiting or control wax formation during stimulation treatment of a well. More specifically, the present invention proposes the use of aqueous polymer dispersions suitable as wax inhibitor compositions which are compatible with aqueous fracturing fluids.
    Type: Application
    Filed: September 27, 2019
    Publication date: February 10, 2022
    Applicant: RHODIA OPERATIONS
    Inventors: Pierre-Emmanuel Dufils, David James Wilson, Zongming Xiu, Jia Zhou
  • Patent number: 10982110
    Abstract: The present invention relates to a process for preparing a vinylidene chloride polymer composite comprising a vinylidene chloride polymer and clay materials. The process comprises polymerising vinylidene chloride and clay materials and the resulting vinylidene chloride polymer particle is surrounded by a plurality of clay platelets. The clay materials according to the present invention function as a solid stabilizer in the process for preparing a vinylidene chloride polymer composite of the present invention. The present invention further relates to the vinylidene chloride polymer composite obtainable from the process, to use of the vinylidene chloride polymer composite for the preparation of films, and to films prepared therefrom.
    Type: Grant
    Filed: November 25, 2016
    Date of Patent: April 20, 2021
    Assignees: Solvay SA, Centre National de la Recherche Scientifique, Université Claude Bernard Lyon 1, Ecole Supérieure de Chimie Physique Electronique de Lyon, Ezus Lyon
    Inventors: Pierre-Emmanuel Dufils, Isabelle Chaduc, Laura Delafresnaye, Elodie Bourgeat-Lami, Muriel Lansalot, Jérôme Vinas, Yves Vanderveken
  • Publication number: 20210024673
    Abstract: Process for the preparation of a vinylidene chloride polymer comprising polymerizing vinylidene chloride and optionally at least one ethylenically unsaturated monomer copolymerizable therewith under the control of a RAFT agent of formula (II).
    Type: Application
    Filed: May 11, 2020
    Publication date: January 28, 2021
    Inventors: Jerome VINAS, Emilie VELASQUEZ, Pierre-Emmanuel DUFILS, Jutta RIEGER, François STOFFELBACH, Muriel LANSALOT, Franck D'AGOSTO, Bernadette CHARLEUX, Yves VANDERVEKEN
  • Publication number: 20200102407
    Abstract: The present invention relates to a process of a process for preparation of a polymer dispersion comprising a step (E) of free radical polymerization in an aqueous medium (M) in the presence of: at least a pre-polymer (pO) soluble in the medium (M), at least one free-radical polymerization initiator, and at least one ethylenically unsaturated hydrophobic monomer (m) which is chosen from an alkyl (meth)acrylate of at least C6, wherein the aqueous medium (M) includes water and at least one water miscible solvent.
    Type: Application
    Filed: June 7, 2018
    Publication date: April 2, 2020
    Inventors: Pierre-Emmanuel DUFILS, David James WILSON, Kevan HATCHMAN
  • Publication number: 20180346750
    Abstract: The present invention relates to a process for preparing a vinylidene chloride polymer composite comprising a vinylidene chloride polymer and clay materials. The process comprises polymerising vinylidene chloride and clay materials and the resulting vinylidene chloride polymer particle is surrounded by a plurality of clay platelets. The clay materials according to the present invention function as a solid stabilizer in the process for preparing a vinylidene chloride polymer composite of the present invention. The present invention further relates to the vinylidene chloride polymer composite obtainable from the process, to use of the vinylidene chloride polymer composite for the preparation of films, and to films prepared therefrom.
    Type: Application
    Filed: November 25, 2016
    Publication date: December 6, 2018
    Inventors: Pierre-Emmanuel DUFILS, Isabelle CHADUC, Laura DELAFRESNAYE, Elodie BOURGEAT-LAMI, Muriel LANSALOT, Jérôme VINAS, Yves VANDERVEKEN
  • Publication number: 20180072909
    Abstract: Coatings and other applications containing latex having self-thickening properties obtainable by methods of adding a water soluble amphiphilic copolymer in a aqueous dispersion of a water-insoluble polymer obtained from ethylenically unsaturated monomers.
    Type: Application
    Filed: September 8, 2017
    Publication date: March 15, 2018
    Applicant: RHODIA OPERATIONS
    Inventors: Lichang ZHOU, Adnan SIDDIQUI, Homayoun JAMASBI, David James WILSON, Pierre-Emmanuel DUFILS, Tiffany CHEN, Fabio TREZZI
  • Patent number: 9850364
    Abstract: Process for the preparation of a vinylidene chloride polymer composite comprising a solid particulate encapsulated in the vinylidene chloride polymer. The process comprises providing a dispersion of a solid particulate material in a liquid phase, said dispersion comprising a RAFT/MADIX agent; providing vinylidene chloride and optionally one or more ethylenically unsaturated monomer copolymerizable therewith to said dispersion; and polymerizing vinylidene chloride and said optionally present one or more ethylenically unsaturated monomer under the control of said RAFT/MADIX agent to form polymer at the surface of said solid particulate material.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: December 26, 2017
    Assignees: Solvay SA, Centre National De La Recherche Scientifique, Ecole Nationale Superieure De Chimie De Montpellier, Universite De Montpellier 2
    Inventors: Jérôme Vinas, Pierre-Emmanuel Dufils, Jérôme Garnier, Patrick Lacroix-Desmazes, Alex Van Herk, Jérôme Warnant, Yves Vanderveken
  • Publication number: 20170362425
    Abstract: Coatings and other applications containing a latex with modified surface properties obtainable by methods of adding a water soluble amphiphilic copolymer in a aqueous dispersion of a water-insoluble polymer obtained from ethylenically unsaturated monomers.
    Type: Application
    Filed: June 15, 2017
    Publication date: December 21, 2017
    Applicant: RHODIA OPERATIONS
    Inventors: Adnan SIDDIQUI, Pierre-Emmanuel DUFILS, David James WILSON, Tiffany CHEN
  • Publication number: 20140371370
    Abstract: Process for the preparation of a vinylidene chloride polymer composite comprising a solid particulate encapsulated in the vinylidene chloride polymer. The process comprises providing a dispersion of a solid particulate material in a liquid phase, said dispersion comprising a RAFT/MADIX agent; providing vinylidene chloride and optionally one or more ethylenically unsaturated monomer copolymerisable therewith to said dispersion; and polymerising vinylidene chloride and said optionally present one or more ethylenically unsaturated monomer under the control of said RAFT/MADIX agent to form polymer at the surface of said solid particulate material.
    Type: Application
    Filed: December 18, 2012
    Publication date: December 18, 2014
    Inventors: Jérome Vinas, Pierre-Emmanuel Dufils, Jérome Garnier, Patrick Lacroix-Desmazes, Alex Van Herk, Jérome Warnant, Yves Vanderveken
  • Publication number: 20140364558
    Abstract: Process for the preparation of a vinylidene chloride polymer comprising polymerizing vinylidene chloride and optionally at least one ethylenically unsaturated monomer copolymerizable therewith under the control of a RAFT agent of formula (II).
    Type: Application
    Filed: December 18, 2012
    Publication date: December 11, 2014
    Inventors: Jérme Vinas, Emilie Velasquez, Pierre-Emmanuel Dufils, Jutta Rieger, Francois Stoffelbach, Muriel Lansalot, Franck D'Agosto, Bernadette Charleux, Yves Vanderveken
  • Publication number: 20140357791
    Abstract: Process for the preparation of a vinylidene chloride polymer composite comprising a clay material encapsulated in the vinylidene chloride polymer. The process comprises providing a dispersion of a clay material in a liquid phase, said dispersion comprising a RAFT/MADIX agent; providing vinylidene chloride and optionally one or more ethylenically unsaturated monomer copolymerisable therewith to said dispersion; and polymerising vinylidene chloride and said optionally present one or more ethylenically unsaturated monomer under the control of said RAFT/MADIX agent to form polymer at the surface of said clay material.
    Type: Application
    Filed: December 18, 2012
    Publication date: December 4, 2014
    Inventors: Jérome Vinas, Pierre-Emmanuel Dufils, Yves Vanderveken
  • Publication number: 20130237640
    Abstract: A process for preparing a seed latex of an epoxy-containing polymer by radical polymerization in aqueous emulsion of at least one epoxy-containing monomer and optionally at least one comonomer is disclosed. Also disclosed are a process for preparing a vinylidene chloride polymer latex either by radical polymerization in aqueous emulsion of vinylidene chloride and optionally at least one comonomer in the presence of the epoxy-containing polymer seed latex obtained by the process according to the invention; or by mixing the epoxy-containing polymer seed latex with a vinylidene chloride polymer latex obtained separately by radical polymerization in aqueous emulsion.
    Type: Application
    Filed: November 10, 2011
    Publication date: September 12, 2013
    Inventors: Pierre-Emmanuel Dufils, Patrick Lacroix-Desmazes, Jerome Garnier, Yves Vanderveken, Jerome Vinas
  • Patent number: 7772340
    Abstract: A subject-matter of the invention is alkoxyamines resulting from ?-phosphorated nitroxides corresponding to the formula: in which R represents an alkyl radical having a number of carbon atoms ranging from 1 to 3, R1 represents a hydrogen atom or a residue: in which R3 represents an alkyl radical having a number of carbon atoms ranging from 1 to 20, and R2 represents a hydrogen atom, an alkyl radical having a number of carbon atoms ranging from 1 to 8, a phenyl radical, an alkali metal, such as Li, Na or K, H4N+, Bu4N+ or Bu3HN+, exhibiting a kinetic dissociation constant kd, measured at 120° C. by EPR, of greater than 0.05 s?1. These compounds can be used as initiators for the (co)polymerizations of at least one monomer which can be polymerized by the radical route.
    Type: Grant
    Filed: July 23, 2003
    Date of Patent: August 10, 2010
    Assignee: Arkema France
    Inventors: Jean-Luc Couturier, Olivier Guerret, Denis Bertin, Didier Gigmes, Sylvain Marque, Paul Tordo, Florence Chauvin, Pierre-Emmanuel Dufils
  • Publication number: 20070167591
    Abstract: The invention relates to the use of alkoxyamines of formula (I): for the preparation of polymerized or non-polymerized mono- or polyalkoxyamines of formula (II):
    Type: Application
    Filed: March 28, 2007
    Publication date: July 19, 2007
    Applicant: Arkema France
    Inventors: Jean-Luc Couturier, Olivier Guerret, Denis Bertin, Didier Gigmes, Sylvain Marque, Paul Tordo, Pierre-Emmanuel Dufils
  • Patent number: 7214810
    Abstract: The invention relates to the use of alkoxyamines of formula (I): for the preparation of polymerized or non-polymerized mono- or polyalkoxyamines of formula (II):
    Type: Grant
    Filed: March 31, 2004
    Date of Patent: May 8, 2007
    Assignee: Arkema France
    Inventors: Jean-luc Couturier, Olivier Guerret, Denis Bertin, Didier Gigmes, Sylvain Marque, Paul Tordo, Pierre-emmanuel Dufils
  • Publication number: 20050065119
    Abstract: The invention relates to the use of alkoxyamines of formula (I): for the preparation of polymerized or non-polymerized mono- or polyalkoxyamines of formula (II):
    Type: Application
    Filed: March 31, 2004
    Publication date: March 24, 2005
    Inventors: Jean-luc Couturier, Oliver Guerret, Denis Bertin, Didier Gigmes, Sylvain Marque, Paul Tordo, Pierre-Emmanuel Dufils