Patents by Inventor Clothilde Buffe

Clothilde Buffe 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: 11098135
    Abstract: The invention relates to a novel methylated cyclodextrin and to a novel method used for the production thereof. The invention also relates to the use of said methylated cyclodextrin for the solubilisation of lipophilic compounds, or carriers of at least one lipophilic group. The invention further relates to a composition comprising said methylated cyclodextrin, particularly a pharmaceutical composition.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: August 24, 2021
    Inventors: Xavier Parissaux, Jean-Baptiste Palmieri, Mathias Ibert, Clothilde Buffe
  • Patent number: 10913817
    Abstract: The present invention relates to the use of bis-anhydrohexitol ethers as reactive diluents in a crosslinkable resin, adhesive, coating or composite matrix composition. Not only do these products make it possible to advantageously reduce the viscosity of the mixtures obtained, but they also lead to a very small reduction in the glass transition temperature of the crosslinked mixtures, compared to other reactive diluents, while spectacularly improving the mechanical properties of the latter such as the Young's modulus, the tensile strength, the elongation at break and the toughness.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: February 9, 2021
    Assignee: ROQUETTE FRERES
    Inventors: Clothilde Buffe, Jean-Pierre Pascault, Loureiro Roi Meizoso, Pilar Prendes Gonzales, Senén Paz Abuin
  • Publication number: 20200123308
    Abstract: The present invention relates to the use of bis-anhydrohexitol ethers as reactive diluents in a crosslinkable resin, adhesive, coating or composite matrix composition. Not only do these products make it possible to advantageously reduce the viscosity of the mixtures obtained, but they also lead to a very small reduction in the glass transition temperature of the crosslinked mixtures, compared to other reactive diluents, while spectacularly improving the mechanical properties of the latter such as the Young's modulus, the tensile strength, the elongation at break and the toughness.
    Type: Application
    Filed: August 8, 2016
    Publication date: April 23, 2020
    Applicant: Roquette Freres
    Inventors: Clothilde Buffe, Jean-Pierre Pascault, Loureiro Roi Meizoso, Pilar Prendes Gonzales, Senén Paz Abuin
  • Patent number: 10174152
    Abstract: A process for producing bis-anhydrohexitol ether compositions and in particular isohexide glycidyl ether compositions, one of the originalities of which is azeotropic distillation carried out under reduced pressure. Such compositions are used to produce epoxy resins, the function thereof being to form a three-dimensional macromolecular network. The compositions obtained according to the process are rich in diepoxy derivatives of isosorbide to the detriment of monoepoxy derivatives, only the first participating in the formation of the three-dimensional network. The crosslinking density is therefore increased, thereby making it possible to obtain a material which is more chemically resistant and mechanically stronger and which has a higher glass transition temperature (Tg), compared with the same materials obtained with bis-anhydrohexitol ether compositions according to the prior art.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: January 8, 2019
    Assignee: ROQUETTE FRERES
    Inventors: Clothilde Buffe, Amelie Dolenec, Mathias Ibert
  • Patent number: 10131741
    Abstract: The present invention relates to an alkyd resin as well as to a method for preparing such a resin, said alkyd resin resulting from the polycondensation: of at least one polyacid, preferably biosourced, or its acid anhydride preferably biosourced, of at least one component based on oil, preferably biosourced, or its corresponding fatty acid, preferably biosourced, of at least one polyol, preferably biosourced, having at least two hydroxyl groups, selected from polyols comprising at least one 1,4:3,6-dianhydrohexitol unit, of rosin or of at least one of its derivatives, wherein at least one polyacid is succinic acid, preferably biosourced, or its anhydride, preferably biosourced; and wherein the percentage by dry weight of rosin or its derivatives based on the total dry weight of succinic acid and of its anhydride and of rosin or its derivatives is comprised between about 10% and about 80%.
    Type: Grant
    Filed: August 5, 2014
    Date of Patent: November 20, 2018
    Assignees: A Et A Mader, Roquette Freres
    Inventors: Cyril Barquant, Joël Roussel, Clothilde Buffe, Laura Crowther-Alwyn
  • Publication number: 20180319903
    Abstract: The invention relates to a novel methylated cyclodextrin and to a novel method used for the production thereof. The invention also relates to the use of said methylated cyclodextrin for the solubilisation of lipophilic compounds, or carriers of at least one lipophilic group. The invention further relates to a composition comprising said methylated cyclodextrin, particularly a pharmaceutical composition.
    Type: Application
    Filed: October 14, 2016
    Publication date: November 8, 2018
    Applicant: Roquette Freres
    Inventors: Xavier Parissaux, Jean-Baptiste Palmieri, Mathias Ibert, Clothilde Buffe
  • Patent number: 10113053
    Abstract: The invention relates to isosorbide epoxide esters having Formulas (I), (II), and (III), to the mixtures thereof, and to the use thereof as an additive in PVC compositions, particularly as a plasticizer.
    Type: Grant
    Filed: September 22, 2015
    Date of Patent: October 30, 2018
    Assignee: ROQUETTE FRERES
    Inventors: Hervé Wyart, Clothilde Buffe, Juliette Brocard
  • Publication number: 20170321036
    Abstract: The invention relates to isosorbide epoxide esters having Formulas (I), (II), and (III), to the mixtures thereof, and to the use thereof as an additive in PVC compositions, particularly as a plasticizer.
    Type: Application
    Filed: September 22, 2015
    Publication date: November 9, 2017
    Applicant: Roquette Freres
    Inventors: Hervé Wyart, Clothilde Buffe, Juliette Brocard
  • Patent number: 9321883
    Abstract: The object of a present invention is an alkyd resin as well as the method for preparing such a resin, said alkyd resin comprising: a preferably biosourced, polyacid component or its preferably biosourced acid anhydride; a first polyol component, preferably biosourced, having at least two hydroxyl groups; a second biosourced polyol component having at least one 1,4:3,6-dianhydrohexitol unit; and a component based on biosourced oil or its corresponding biosourced fatty acid.
    Type: Grant
    Filed: February 1, 2013
    Date of Patent: April 26, 2016
    Assignees: A ET A MADER, ROQUETTE FRERES
    Inventors: Joël Roussel, Clothilde Buffe, Laura Crowther-Alwyn, Arnaud Verraes
  • Publication number: 20150031828
    Abstract: The object of a present invention is an alkyd resin as well as the method for preparing such a resin, said alkyd resin comprising: a preferably biosourced, polyacid component or its preferably biosourced acid anhydride; a first polyol component, preferably biosourced, having at least two hydroxyl groups; a second biosourced polyol component having at least one 1,4:3,6-dianhydrohexitol unit; and a component based on biosourced oil or its corresponding biosourced fatty acid.
    Type: Application
    Filed: February 1, 2013
    Publication date: January 29, 2015
    Inventors: Joël Roussel, Clothilde Buffe, Laura Crowther-Alwyn, Arnaud Verraes