Patents by Inventor Jean E. E. Herbin

Jean E. E. Herbin 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 the preparation of high density anion exchange resins by bromination of crosslinked vinyltoluene copolymers
    Patent number: 4280003
    Abstract: The preparation of anion exchange resins having high density and capacity by bromination of particles of crosslinked vinylaromatic copolymers is described. The process is characterized in that particles of crosslinked vinyltoluene copolymers which have been swollen in a solvent are dibrominated using bromine or a bromine-releasing agent, and the brominated particles are then aminated. The product resins can be used for the extraction of metals, particularly uranium, from solutions such as ore leaching liquor.
    Type: Grant
    Filed: June 15, 1979
    Date of Patent: July 21, 1981
    Assignee: Diamond Shamrock Corporation
    Inventors: Jean E. E. Herbin, Paul D. A. Grammont
  • 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
  • Process for the chloromethylation of polymers for the production of anionic exchange resins
    Patent number: 4225677
    Abstract: Improved process for the chloromethylation of cross-linked vinylaromatic polymers and copolymers wherein a chlorine generator is incorporated into the reactants and a metallic chloride replaces part or all of the sulfuric acid used in forming the chloromethylating complex. The chloromethylated polymer may be further functionalized to produce an ion-exchange resin.
    Type: Grant
    Filed: January 12, 1979
    Date of Patent: September 30, 1980
    Assignee: Diamond Shamrock Corporation
    Inventors: Jacques L. Boutier, Paul D. A. Grammont, Jean E. E. Herbin
  • Cation-exchange resins having cross-linked vinyl aromatic polymer matrix with attached amino alkylene phosphonic acid groups, their use, and preparation
    Patent number: 4002564
    Abstract: Described is an ion exchange resin prepared from a cross-linked vinyl-aromatic polymer carrying recurring active units of the formula --CH.sub.2 NHRPO(OH).sub.2 wherein R is a lower alkylene radical. Such resins are useful in selectively removing metal ions from solutions, and may be prepared, e.g., by reaction of a primary amino-substituted cross-linked copolymer with a phosphorus trihalide and a simple (C.sub.1 -C.sub.3) aldehyde.
    Type: Grant
    Filed: July 23, 1975
    Date of Patent: January 11, 1977
    Assignee: Diamond Shamrock Corporation
    Inventors: Jack Carbonel, Paul D. A. Grammont, Jean E. E. Herbin