Patents by Inventor Helmut Kolling

Helmut Kolling 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 polyethylene having molecular weights above 500,000
    Patent number: 4059720
    Abstract: A process is described wherein polyethylenes having molecular weights greater than 500,000 are prepared and in which the formation of polymer film and lumps in the polymerization reactor is virtually eliminated. The process comprises polymerizing ethylene in the presence of a solvent, a titanium (III) halide/aluminum alkyl catalyst and a mono-or polyhydric alcohol, the ethylene having an oxygen content of less than 5 ppm.
    Type: Grant
    Filed: March 31, 1976
    Date of Patent: November 22, 1977
    Assignee: Ruhrchemie Aktiengesellschaft
    Inventors: Helmut Kolling, Friedrich Rappen, Nikolaus Geiser