Patents by Inventor Herve Wyart

Herve Wyart 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: 10731182
    Abstract: The use of a product for internal dehydration of hydrogenated sugar as a methanogen substrate in a method for biogas production, a composition including a monoanhydrohexitol (M), a dianhydrohexitol (D), and anhydrohexitol polymers (P), and a methanisation method.
    Type: Grant
    Filed: May 26, 2015
    Date of Patent: August 4, 2020
    Assignee: ROQUETTE FRERES
    Inventors: Herve Wyart, Mathias Ibert
  • Patent number: 10640626
    Abstract: A method for producing a composition of diesters, includes a step including the esterification of 1,4:3,6-dianhydrohexitol by a composition of carboxylic acids, the composition including: at least an acid having formula C7H15COOH (X) and an acid having formula C9H19COOH (Y), the mass ratio (X)/(Y) varying between 10/90 and 90/10.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: May 5, 2020
    Assignee: ROQUETTE FRERES
    Inventors: Thierry Feron, Arnaud Verraes, Herve Wyart, Catherine Baurain
  • Patent number: 10005894
    Abstract: Disclosed is a composition that can rapidly plasticize polymers, including, in relation to the total mass of (A) and (B): between 0.1 and 99 mass-% of at least one ester of 1,4:3,6-dianhydrohexitol (A), having a molar mass varying between 255 and 345 g·mol?1 and selected from among monoesters and diesters of isosorbide, isomannide and isoidide; and between 1 and 99.9 mass-% of at least one compound (B) having a molar mass greater than 345 g·mol?1 and selected from among the esters of 1,4:3,6-dianhydrohexitol, the esters of cyclohexane polycarboxylic acid, the esters of phthalic acid, and glycerol esters. Also disclosed is a method for the production of a plasticized object using constituents (A) and (B), as well as to the use of the ester compound (A) as a polymer gelification accelerator.
    Type: Grant
    Filed: May 2, 2013
    Date of Patent: June 26, 2018
    Assignee: ROQUETTE FRERES
    Inventors: Thierry Feron, Monique Sobocinski, Herve Wyart, Boris Breitscheidel, Jochen Wagner
  • Publication number: 20170145442
    Abstract: The use of a product for internal dehydration of hydrogenated sugar as a methanogen substrate in a method for biogas production, a composition including a monoanhydrohexitol (M), a dianhydrohexitol (D), and anhydrohexitol polymers (P), and a methanisation method.
    Type: Application
    Filed: May 26, 2015
    Publication date: May 25, 2017
    Inventors: Herve WYART, Mathias IBERT
  • Patent number: 9598325
    Abstract: A method for improving the stability of compositions of a product for internal dehydration of a hydrogenated sugar, in particular an isosorbide composition, the method involving the use of monoethanolamine, diethanolamine, triethanolamine and the mixtures thereof as a stabilization agent. The resulting compositions and their various uses thereof are also described.
    Type: Grant
    Filed: April 30, 2014
    Date of Patent: March 21, 2017
    Assignee: ROQUETTE FRERES
    Inventors: Mathias Ibert, Herve Wyart, Patrick Fuertes
  • Patent number: 9346819
    Abstract: A simple, low cost, environmentally friendly and sustainable process for the production of internal dehydration products of hydrogenated sugar, implementing trivalent metal phosphate (metal (III) phosphates) as catalysts during the dehydratation step.
    Type: Grant
    Filed: August 7, 2013
    Date of Patent: May 24, 2016
    Assignee: ROQUETTE FRERES
    Inventors: Mathias Ibert, Herve Wyart, Wolfgang Holderich, Oana-Alice Rusu P.
  • Patent number: 9334287
    Abstract: Dianhydrohexitol pellets, whose fluidity is preserved even after lengthy storage, include between 90% and 100%, preferably between 95% and 100%, and more preferentially between 97% and 100% of dianhydrohexitols by weight, on a dry weight basis, and have the particularity of not being subject to caking. A process for preparing the dianhydrohexitol pellets is also described.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: May 10, 2016
    Assignee: ROQUETTE FRERES
    Inventors: Mathias Ibert, Jerome Saint Pol, Herve Wyart
  • Publication number: 20160083310
    Abstract: A method for improving the stability of compositions of a product for internal dehydration of a hydrogenated sugar, in particular an isosorbide composition, the method involving the use of monoethanolamine, diethanolamine, triethanolamine and the mixtures thereof as a stabilization agent. The resulting compositions and their various uses thereof are also described.
    Type: Application
    Filed: April 30, 2014
    Publication date: March 24, 2016
    Inventors: Mathias IBERT, Herve WYART, Patrick FUERTES
  • Publication number: 20150361086
    Abstract: Dianhydrohexitol pellets, whose fluidity is preserved even after lengthy storage, include between 90% and 100%, preferably between 95% and 100%, and more preferentially between 97% and 100% of dianhydrohexitols by weight, on a dry weight basis, and have the particularity of not being subject to caking. A process for preparing the dianhydrohexitol pellets is also described.
    Type: Application
    Filed: August 25, 2015
    Publication date: December 17, 2015
    Inventors: Mathias IBERT, Jerome SAINT POL, Herve WYART
  • Publication number: 20150322238
    Abstract: A method for producing a composition of diesters, includes a step including the esterification of 1,4: 3,6-dianhydrohexitol by a composition of carboxylic acids, the composition including: at least an acid having formula C7H15COOH (X) and an acid having formula C9H19COOH (Y), the mass ratio (X)/(Y) varying between 10/90 à 90/10.
    Type: Application
    Filed: November 26, 2013
    Publication date: November 12, 2015
    Inventors: Thierry Feron, Arnaud Verraes, Herve Wyart, Catherine Baurain
  • Patent number: 9163031
    Abstract: Dianhydrohexitol pellets, whose fluidity is preserved even after lengthy storage, include between 90% and 100%, preferably between 95% and 100%, and more preferentially between 97% and 100% of dianhydrohexitols by weight, on a dry weight basis, and have the particularity of not being subject to caking. A process for preparing the dianhydrohexitol pellets is also described.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: October 20, 2015
    Assignee: ROQUETTE FRERES
    Inventors: Mathias Ibert, Jerome Saint Pol, Herve Wyart
  • Publication number: 20150291614
    Abstract: A method for producing a composition of diesters of 1,4:3,6-dianhydrohexitol, characterised in that it includes a step including the esterification of 1,4:3,6-dianhydrohexitol by a composition of carboxylic acids, the composition of carboxylic acids including: at least an acid having formula C7H15COOH (X) and an acid having formula C9H19COOH (Y), the mass ratio (X)/(Y) varying between 10/90 à 90/10; at least one acid having a formula different from (X) and (Y), selected from among hexanoic acid, lauric acid, myristic acid, oleic acid or linoleic acid.
    Type: Application
    Filed: November 26, 2013
    Publication date: October 15, 2015
    Inventors: Thierry Feron, Arnaud Verraes, Herve Wyart, Catherine Baurain, Juliette Brocard, Patrick Fuertes
  • Publication number: 20150183796
    Abstract: A simple, low cost, environmentally friendly and sustainable process for the production of internal dehydration products of hydrogenated sugar, implementing trivalent metal phosphate (metal (III) phosphates) as catalysts during the dehydratation step.
    Type: Application
    Filed: August 7, 2013
    Publication date: July 2, 2015
    Inventors: Mathias Ibert, Herve Wyart, Wolfgang Holderich, Oana-Alice Rusu P.
  • 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
  • Publication number: 20150125613
    Abstract: Disclosed is a composition that can rapidly plasticise polymers, including, in relation to the total mass of (A) and (B): between 0.1 and 99 mass-% of at least one ester of 1,4:3,6-dianhydrohexitol (A), having a molar mass varying between 255 and 345 g·mol?1 and selected from among monoesters and diesters of isosorbide, isomannide and isoidide; and between 1 and 99.9 mass-% of at least one compound (B) having a molar mass greater than 345 g·mol?1 and selected from among the esters of 1,4:3,6-dianhydrohexitol, the esters of cyclohexane polycarboxylic acid, the esters of phthalic acid, and glycerol esters. Also disclosed is a method for the production of a plasticised object using constituents (A) and (B), as well as to the use of the ester compound (A) as a polymer gelification accelerator.
    Type: Application
    Filed: May 2, 2013
    Publication date: May 7, 2015
    Applicant: ROQUETTE FRERES
    Inventors: Thierry Feron, Monique Sobocinski, Herve Wyart, Boris Breitscheidel, Jochen Wagner
  • 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: 20140158562
    Abstract: A dianhydrohexitol packaged in a packaging material that is impervious to gas, wherein the partial pressure of oxygen inside the packaging is 0.1 to 10 mbar, preferably 0.5 to 5 mbar, and more preferably 0.5 to 2 mbar. The method for packaging dianhydrohexitol, includes inserting the dianhydrohexitol into a packaging material that is impervious to gas, and then hermetically sealing the packaging, the method being carried out in an atmosphere that has a partial pressure of oxygen of 0.1 to 10 mbar, preferably 0.5 to 5 mbar, and more preferably 0.5 to 2 mbar.
    Type: Application
    Filed: August 3, 2012
    Publication date: June 12, 2014
    Applicant: ROQUETTE FRERES
    Inventors: Mathias Ibert, 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
  • 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: 20130281718
    Abstract: Dianhydrohexitol pellets, whose fluidity is preserved even after lengthy storage, include between 90% and 100%, preferably between 95% and 100%, and more preferentially between 97% and 100% of dianhydrohexitols by weight, on a dry weight basis, and have the particularity of not being subject to caking. A process for preparing the dianhydrohexitol pellets is also described.
    Type: Application
    Filed: September 30, 2011
    Publication date: October 24, 2013
    Applicant: ROQUETTE FRERES
    Inventors: Mathias Ibert, Jerome Saint Pol, Herve Wyart