Patents by Inventor Bertram Gaspar

Bertram Gaspar 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 production of semifinished products and/or molded components from polypropylene
    Patent number: 4652326
    Abstract: A process for the production of semifinished products and/or molded components from polypropylene by grafting thereto an alkoxysilane compound in the presence of an organic peroxide involves mising the polypropylene, the silane compound, and the peroxide and subsequently plasticizing and extruding at a temperature of about 170.degree.-240.degree. C. The process utilizes an essentially isotactic homopolymer of propylene with a density of about 0.90-0.91 g/cm.sup.3 and a melt index MFI (#.degree. C./5 kp) of smaller than 0.7 g/10 min, preferably smaller than 0.1 g/10 min, and with a molecular weight higher than 5.multidot.10.sup.5. An initially non-crosslinked semifinished product is obtained.
    Type: Grant
    Filed: July 30, 1984
    Date of Patent: March 24, 1987
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Paul Spielau, Werner Kuhnel, Karlo Klaar, Bertram Gaspar, Richard Weiss, Horst Ulb, Hans-Ulrich Breitscheidel, Gerd Klingberg, Jurgen Fenske