Patents by Inventor Barry Archer

Barry Archer 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).

  • Production of hydroxyethylpiperazine
    Patent number: 11987562
    Abstract: Embodiments relate to a continuous process for the production of hydroxyethylpiperazine that includes feeding neat piperazine, recycled piperazine, and ethylene oxide to a reactor to form crude hydroxyethylpiperazine, in which the reactor is a continuous stirred tank reactor or a plug flow reactor. The process further includes continuously feeding the crude hydroxyethylpiperazine from the reactor to a distillation system that includes at least one distillation column, the distillation system produces at least a recycled piperazine stream and a hydroxyethylpiperazine stream, the recycled piperazine stream includes the recycled piperazine that is fed to the reactor to form the crude hydroxyethylpiperazine, and the hydroxyethylpiperazine stream includes at least 60 wt % of hydroxyethylpiperazine based on a total weight of the hydroxyethylpiperazine stream.
    Type: Grant
    Filed: October 23, 2019
    Date of Patent: May 21, 2024
    Assignee: Dow Global Technologies LLC
    Inventors: Amanda M. Goodman, Jianping Zeng, Barry Archer, Christophe R. Laroche
  • Production of Hydroxyethylpiperazine
    Publication number: 20210395211
    Abstract: Embodiments relate to a continuous process for the production of hydroxyethylpiperazine that includes feeding neat piperazine, recycled piperazine, and ethylene oxide to a reactor to form crude hydroxyethylpiperazine, in which the reactor is a continuous stirred tank reactor or a plug flow reactor. The process further includes continuously feeding the crude hydroxyethylpiperazine from the reactor to a distillation system that includes at least one distillation column, the distillation system produces at least a recycled piperazine stream and a hydroxyethylpiperazine stream, the recycled piperazine stream includes the recycled piperazine that is fed to the reactor to form the crude hydroxyethylpiperazine, and the hydroxyethylpiperazine stream includes at least 60 wt % of hydroxyethylpiperazine based on a total weight of the hydroxyethylpiperazine stream.
    Type: Application
    Filed: October 23, 2019
    Publication date: December 23, 2021
    Inventors: Amanda M. Goodman, Jianping Zeng, Barry Archer, Christophe R. Laroche