Patents by Inventor Hendrikus Gerardus Boevenbrink

Hendrikus Gerardus Boevenbrink 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).

  • Dosing of peroxide to a suspension process wherein styrene is polymerized
    Patent number: 7132485
    Abstract: The invention relates to a suspension polymerization process for the preparation of styrene-containing (co)polymers, wherein the process comprises the steps of continuously or semi-continuously dosing an initiator to the reaction mixture, said initiator having a specified half-life at the temperature of the reaction mixture to which it is dosed. The invention further relates to styrene based (co)polymer obtainable by said process, and to the use of said styrene (co)polymer in a shaping process.
    Type: Grant
    Filed: April 2, 2004
    Date of Patent: November 7, 2006
    Assignee: Akzo Nobel N.V.
    Inventors: Hendrikus Gerardus Boevenbrink, Frans Johannes Hoogesteger