Patents by Inventor Petrus T. J. L. Smids

Petrus T. J. L. Smids 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).

  • Bromine-containing polymer and process of preparing a bromine-containing polymer
    Patent number: 4412051
    Abstract: Fire-resistant copolymers of bromostyrene and another monomer, preferably acrylonitrile, are made by emulsion polymerization to produce copolymers having 95 to 25 weight percent bromostyrene, the balance being the second monomer. The resulting copolymers have a high bromine content in the range 20 to 44 weight percent and may be used as such as a flame-resistant plastics material or admixed with other plastics such as the polyolefins to impart fire-resistance to the mixture. The copolymers produced exhibit good mechanical properties and fire-resistance values.
    Type: Grant
    Filed: July 21, 1981
    Date of Patent: October 25, 1983
    Assignee: Stamicarbon B.V.
    Inventors: Hendrikus C. J. de Man, Petrus T. J. L. Smids