Patents by Inventor Patrick J. B. Prsle

Patrick J. B. Prsle 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 bromination of resins based on crosslinked vinylaromatic copolymers
    Patent number: 4246354
    Abstract: This invention relates to a process for the preparation of high density resins by bromination of particles of crosslinked vinylaromatic copolymers of either the gel type or the ionic or non-ionic macroporous type. The invention is characterized in that crosslinked vinylaromatic polymer particles which have been swollen in a solvent are contacted with bromine or a bromine releasing agent in the presence of an oxidizing agent.
    Type: Grant
    Filed: May 29, 1979
    Date of Patent: January 20, 1981
    Assignee: Diamond Shamrock Corporation
    Inventors: Jean E. E. Herbin, Jean de Koker, Patrick J. B. Prsle, Marc S. A. Giuliani, Teddy E. A. Drode, Jacques L. Boutier, Paul D. A. Grammont