Patents by Inventor Gunther Weymanns

Gunther Weymanns 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 finely dispersed polymer mixtures
    Patent number: 5106906
    Abstract: 37 Highly dispersed mixtures of at least two polymers which are not completely miscible in the melt under customary conditions are produced by melting the polymers used in the presence of supercritical gases or mixtures of gases, intensively thoroughly mixing the molten polymers for long enough until the viscosity of the melt has diminished by at least 10%, subsequently cooling the polymer melt with further thorough mixing, until the viscosity of the melt has at least reached the original value again and then depressurizing the polymer melt. The highly dispersed mixtures produced in this way can be processed in the customary manner into mouldings.
    Type: Grant
    Filed: September 22, 1989
    Date of Patent: April 21, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Erich Meier, Hanns-Ingolf Paul, Rudiger Plaetschke, Gunther Weymanns