Patents by Inventor Emilie Josien

Emilie Josien 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: 20180037344
    Abstract: The present invention relates to a process for packaging a dianhydrohexitol, in the form of an aqueous solution in a container comprising a metal-based layer. It also relates to the container containing the aqueous solution of dianhydrohexitol.
    Type: Application
    Filed: February 18, 2016
    Publication date: February 8, 2018
    Applicant: Roquette Freres
    Inventors: Mathias Ibert, Hervé Wyart, Emilie Josien
  • Patent number: 9040654
    Abstract: A process for manufacturing a polycarbonate, having a glass transition temperature greater than or equal to 50° C., includes: a step (1) of introducing into a reactor a monomer of formula (I) and R1 and R2 being identical or different alkyl groups; a step (2) of introducing into the reactor at least one cyclic diol or a mixture of diols (B) including at least 20 mol % of cyclic diols; a subsequent step (3) of polycondensation via transesterification of the mixture of monomers including the monomers (A) and (B); a step (4) of recovering the polycarbonate formed during step (3).
    Type: Grant
    Filed: April 5, 2012
    Date of Patent: May 26, 2015
    Assignee: ROQUETTE FRERES
    Inventors: Mathias Ibert, Emilie Josien, Herve Wyart
  • Patent number: 8871895
    Abstract: A process for manufacturing polycarbonate includes:—a step (1) of introducing into a reactor a particular composition (A) of at least one dianhydrohexitol carbonate bearing two alkyl carbonate functions; a step (2) of introducing a diol or a mixture of diols (B); a subsequent step (3) of polycondensation by transesterification of the mixture of monomers including (A) and (B); a step (4) of recovering the polycarbonate formed during step (3).
    Type: Grant
    Filed: April 5, 2012
    Date of Patent: October 28, 2014
    Assignee: Roquette Freres
    Inventors: Mathias Ibert, Emilie Josien, Herve Wyart
  • Publication number: 20140031516
    Abstract: A process for manufacturing polycarbonate includes:—a step (1) of introducing into a reactor a particular composition (A) of at least one dianhydrohexitol carbonate bearing two alkyl carbonate functions; a step (2) of introducing a diol or a mixture of diols (B); a subsequent step (3) of polycondensation by transesterification of the mixture of monomers including (A) and (B); a step (4) of recovering the polycarbonate formed during step (3).
    Type: Application
    Filed: April 5, 2012
    Publication date: January 30, 2014
    Applicant: ROQUETTE FRERES
    Inventors: Mathias Ibert, Emilie Josien, Herve Wyart
  • Publication number: 20140031517
    Abstract: A process for manufacturing a polycarbonate, having a glass transition temperature greater than or equal to 50° C., includes: ? a step (1) of introducing into a reactor a monomer of formula (I) and R1 and R2 being identical or different alkyl groups; ? a step (2) of introducing into the reactor at least one cyclic diol or a mixture of diols (B) including at least 20 mol % of cyclic diols; ? a subsequent step (3) of polycondensation via transesterification of the mixture of monomers including the monomers (A) and (B); ? a step (4) of recovering the polycarbonate formed during step (3).
    Type: Application
    Filed: April 5, 2012
    Publication date: January 30, 2014
    Applicant: Roquette Freres
    Inventors: Mathias Ibert, Emilie Josien, Herve Wyart
  • Patent number: 8399601
    Abstract: A method for preparing dialkyl carbonates of dianhydrohexitol, includes the following steps: (a) preparing an initial reaction mixture containing at least one dianhydrohexitol, at least two mole equivalents of a dialkyl carbonate of formula and a transesterification catalyst; (b) heating the reaction mixture to a temperature greater than or equal to the boiling temperature of the formed alcohol, or of the azeotrope thereof, in a reaction chamber preferably provided with a rectification column including a sufficient number of theoretical distillation plates to separate the resulting alcohol from the reaction mixture. Certain dialkyl carbonates of dianhydrohexitols produced by the method and the use thereof for synthesizing synthetic polymers are also described.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: March 19, 2013
    Assignee: Roquette Freres
    Inventors: Patrick Fuertes, Mathias Ibert, Emilie Josien, Pietro Tundo, Fabio Arico
  • Publication number: 20120041169
    Abstract: A method for preparing dialkyl carbonates of dianhydrohexitol, includes the following steps: (a) preparing an initial reaction mixture containing at least one dianhydrohexitol, at least two mole equivalents of a dialkyl carbonate of formula and a transesterification catalyst; (b) heating the reaction mixture to a temperature greater than or equal to the boiling temperature of the formed alcohol, or of the azeotrope thereof, in a reaction chamber preferably provided with a rectification column including a sufficient number of theoretical distillation plates to separate the resulting alcohol from the reaction mixture. Certain dialkyl carbonates of dianhydrohexitols produced by the method and the use thereof for synthesizing synthetic polymers are also described.
    Type: Application
    Filed: September 30, 2010
    Publication date: February 16, 2012
    Applicant: ROQUETTE FRERES
    Inventors: Patrick Fuertes, Mathias Ibert, Emilie Josien, Pietro Tundo, Fabio Arico