Patents by Inventor Benjamin Paci

Benjamin Paci 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).

  • Process for producing aromatic polyimides
    Patent number: 10745520
    Abstract: The invention relates to a process for producing aromatic polyimides, comprising the following steps: (a) preparation of one or more solid salt(s) by reacting one or more aromatic tetracarboxylic acid(s) and one or more diamine(s) according to a mole ratio ranging from 0.95 to 1.05; (b) drying of the solid salt(s), (c) addition, to the dry salt resulting from step (b), of one or more compound(s) (C) comprising one or more group(s) chosen from a carboxylic acid group, an anhydride group, an ester group and an acyl chloride group; (d) solid-state polymerization of said solid salt(s) in the presence of the compound(s) (C).
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: August 18, 2020
    Assignees: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, UNIVERSITE CLAUDE BERNARD LYON1, UNIVERSITE JEAN MONNET SAINT-ETIENNE, Rhodia Operations, Institut National Des Sciences Appliquees De Lyon
    Inventors: Stéphane Jeol, René Rossin, Vincent Mollet, Benjamin Paci, Françoise Fenouillot-Rimlinger, Alain Rousseau
  • PROCESS FOR PRODUCING AROMATIC POLYIMIDES
    Publication number: 20180355109
    Abstract: The invention relates to a process for producing aromatic polyimides, comprising the following steps: (a) preparation of one or more solid salt(s) by reacting one or more aromatic tetracarboxylic acid(s) and one or more diamine(s) according to a mole ratio ranging from 0.95 to 1.05; (b) drying of the solid salt(s), (c) addition, to the dry salt resulting from step (b), of one or more compound(s) (C) comprising one or more group(s) chosen from a carboxylic acid group, an anhydride group, an ester group and an acyl chloride group; (d) solid-state polymerization of said solid salt(s) in the presence of the compound(s) (C).
    Type: Application
    Filed: December 17, 2015
    Publication date: December 13, 2018
    Inventors: Stéphane JEOL, René ROSSIN, Vincent MOLLET, Benjamin PACI, Francoise FENOUILLOT-RIMLINGER, Alain ROUSSEAU
  • Thermoplastic polyimides
    Patent number: 9902809
    Abstract: The present invention relates to thermoplastic polyimides and to the synthesis thereof. The invention relates in particular to a method for manufacturing semi-aromatic thermoplastic polyimides by means of the solid-state polymerization of a solid ammonium carboxylate salt formed from an aliphatic diamine and an aromatic tetracarboxylic acid, thereby enabling powders having controlled particle sizes to be produced.
    Type: Grant
    Filed: September 18, 2012
    Date of Patent: February 27, 2018
    Assignee: RHODIA OPERATIONS
    Inventors: Stephane Jeol, Vincent Mollet, Benjamin Paci
  • THERMOPLASTIC POLYIMIDES
    Publication number: 20140228513
    Abstract: The present invention relates to thermoplastic polyimides and to the synthesis thereof. The invention relates in particular to a method for manufacturing semi-aromatic thermoplastic polyimides by means of the solid-state polymerization of a solid ammonium carboxylate salt formed from an aliphatic diamine and an aromatic tetracarboxylic acid, thereby enabling powders having controlled particle sizes to be produced.
    Type: Application
    Filed: September 18, 2012
    Publication date: August 14, 2014
    Applicant: RHODIA OPERATIONS
    Inventors: Stephane Jeol, Vincent Mollet, Benjamin Paci