Patents by Inventor Pierre-Emmanuel CONOIR

Pierre-Emmanuel CONOIR 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).

  • Method for purifying light acrylates
    Patent number: 11161799
    Abstract: The present invention relates to the production of light (meth)acrylic esters by direct esterification of acrylic acid by methanol or ethanol. The invention more particularly relates to a process for the recovery/purification of C1-C2 alkyl acrylate comprising the azeotropic distillation of the crude reaction mixture using a distillation column comprising a sidestream drawing off of a fraction rich in alkyl alkoxypropionate byproduct, the boiling point of which is close to that of acrylic acid, and therefore problematic in the purification process.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: November 2, 2021
    Assignee: Arkema France
    Inventor: Pierre-Emmanuel Conoir
  • METHOD FOR PURIFYING LIGHT ACRYLATES
    Publication number: 20210261491
    Abstract: The present invention relates to the production of light (meth)acrylic esters by direct esterification of acrylic acid by methanol or ethanol. The invention more particularly relates to a process for the recovery/purification of C1-C2 alkyl acrylate comprising the azeotropic distillation of the crude reaction mixture using a distillation column comprising a sidestream drawing off of a fraction rich in alkyl alkoxypropionate byproduct, the boiling point of which is close to that of acrylic acid, and therefore problematic in the purification process.
    Type: Application
    Filed: June 26, 2019
    Publication date: August 26, 2021
    Inventor: Pierre-Emmanuel CONOIR
  • Method for purifying (meth)acrylic esters
    Patent number: 10508074
    Abstract: The subject of the invention is a process for recovering/purifying a C1-C4 (meth)acrylic ester from a crude reaction mixture comprising said ester, the process being carried out using a purification system comprising a divided wall column and a decanter, resulting in a simplification of the process and in a high productivity of the ester produced corresponding to the standards in terms of purity. The invention also relates to a process for producing C1-C4 (meth)acrylic ester comprising this recovery/purification process.
    Type: Grant
    Filed: January 3, 2017
    Date of Patent: December 17, 2019
    Assignee: Arkema France
    Inventors: Serge Tretjak, Nathalie Hess, Rose Aguiar, Pierre-Emmanuel Conoir, Christophe Oses
  • METHOD FOR PURIFYING (METH)ACRYLIC ESTERS
    Publication number: 20190016665
    Abstract: The subject of the invention is a process for recovering/purifying a C1-C4 (meth)acrylic ester from a crude reaction mixture comprising said ester, the process being carried out using a purification system comprising a divided wall column and a decanter, resulting in a simplification of the process and in a high productivity of the ester produced corresponding to the standards in terms of purity. The invention also relates to a process for producing C1-C4 (meth)acrylic ester comprising this recovery/purification process.
    Type: Application
    Filed: January 3, 2017
    Publication date: January 17, 2019
    Inventors: Serge Tretjak, Nathalie HESS, Rose AGUIAR, Pierre-Emmanuel CONOIR, Christophe OSES