Patents by Inventor JULIEN CAYUELA

JULIEN CAYUELA 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).

  • Elastomer mix comprising PLLA and PDLA
    Patent number: 11987671
    Abstract: An elastomeric mixture comprises at least: one diene elastomer/polylactide copolymer A1 comprising a polylactide block PLLA or PDLA, where appropriate one or more other polylactide blocks which are all PLLA when the first block is PLLA or which are all PDLA when the first block is PDLA, the mass percentage of the polylactide block(s) being between 10% and 50% by weight relative to the weight of the copolymer A1, and a diene elastomer/polylactide copolymer B1 the mass percentage of the polylactide block(s) in said copolymer B1 being between 10% and 50% by weight relative to the weight of the copolymer B1, or a polylactide B2, or a mixture of said copolymer B1 and of said polylactide B2, the names PLLA and PDLA denoting a chain consisting of units of formula (I) —[CH(CH3)—C(O)—O]— (I), of which at least 70% by weight are, respectively, of L and D configuration.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: May 21, 2024
    Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventors: Nathalie Coste, Lise Maisonneuve, Gilles Mioche, Severin Dronet, Julien Cayuela, Bertrand De Backer, Philippe Ghislain Dubois
  • HIGH PLA CONTENT PLASTIC MATERIAL COMPRISING PPGDGE
    Publication number: 20220275198
    Abstract: The present invention relates to a plastic composition based on biodegradable and biosourced polyesters, in particular for preparing plastic films.
    Type: Application
    Filed: July 10, 2020
    Publication date: September 1, 2022
    Inventors: Clementine ARNAULT, Bertrand DE BACKER, Julien CAYUELA, Philippe DUBOIS
  • Process for preparing polydiene/polylactide copolymers by reactive extrusion
    Patent number: 11155665
    Abstract: The present invention relates to a process for preparing a diene elastomer/polylactide copolymer, the weight percentage of polylactide being between 10% and 45% by weight, relative to the weight of the copolymer, characterized in that lactide, an elastomer functionalized by at least one group bearing at least one function capable of initiating a ring-opening polymerization of the lactide and a catalytic system are introduced into an extruder (A).
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: October 26, 2021
    Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventors: Severin Dronet, Gilles Mioche, Lise Maisonneuve, Nathalie Coste, Julien Cayuela, Leila Bonnaud, Philippe Ghislain Dubois
  • ELASTOMER MIX COMPRISING PLLA AND PDLA
    Publication number: 20210253801
    Abstract: An elastomeric mixture comprises at least: one diene elastomer/polylactide copolymer A1 comprising a polylactide block PLLA or PDLA, where appropriate one or more other polylactide blocks which are all PLLA when the first block is PLLA or which are all PDLA when the first block is PDLA, the mass percentage of the polylactide block(s) being between 10% and 50% by weight relative to the weight of the copolymer A1, and a diene elastomer/polylactide copolymer B1 the mass percentage of the polylactide block(s) in said copolymer B1 being between 10% and 50% by weight relative to the weight of the copolymer B1, or a polylactide B2, or a mixture of said copolymer B1 and of said polylactide B2, the names PLLA and PDLA denoting a chain consisting of units of formula (I) —[CH(CH3)—C(O)—O]— (I), of which at least 70% by weight are, respectively, of L and D configuration.
    Type: Application
    Filed: June 18, 2019
    Publication date: August 19, 2021
    Inventors: NATHALIE COSTE, LISE MAISONNEUVE, GILLES MIOCHE, SEVERIN DRONET, JULIEN CAYUELA, BERTRAND DE BACKER, PHILIPPE GHISLAIN DUBOIS
  • PROCESS FOR PREPARING POLYDIENE/POLYLACTIDE COPOLYMERS BY REACTIVE EXTRUSION
    Publication number: 20210130526
    Abstract: The present invention relates to a process for preparing a diene elastomer/polylactide copolymer, the weight percentage of polylactide being between 10% and 45% by weight, relative to the weight of the copolymer, characterized in that lactide, an elastomer functionalized by at least one group bearing at least one function capable of initiating a ring-opening polymerization of the lactide and a catalytic system are introduced into an extruder (A).
    Type: Application
    Filed: December 21, 2017
    Publication date: May 6, 2021
    Inventors: SEVERIN DRONET, GILLES MIOCHE, LISE MAISONNEUVE, NATHALIE COSTE, JULIEN CAYUELA, LEILA BONNAUD, PHILIPPE GHISLAIN DUBOIS