Patents by Inventor Dieter Schnier

Dieter Schnier 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).

  • Chromium-containing catalyst systems and their use for the polymerization of olefins
    Patent number: 4013822
    Abstract: An olefin polymerization catalyst comprising a chromium compound deposited on a carrier, which chromium compound is complexed with a straight-chain, branched-chain, or cyclic aliphatic hydrocarbon or mixture thereof such that the mol ratio of aliphatic hydrocarbon to chromium compound is 1:2-3, said chromium compound being deposited on said carrier material in an amount between 10.sup..sup.-3 and 10 millimols chromium compound per gram of carrier material, said carrier material also containing a trialkyl, tricycloalkyl, triaryl, monohalodihydrocarbyl, or monoalkoxydihydrocarbyl aluminum compound; a process for preparing such an olefin polymerization catalyst and the use of such catalyst in the polymerization of olefins, particularly ethylene, propylene, 2-methylpropylene and butene-1.
    Type: Grant
    Filed: July 9, 1975
    Date of Patent: March 22, 1977
    Assignee: Ruhrchemie Aktiengesellschaft
    Inventors: Hans Feichtinger, Hans-Walter Birnkraut, Siegfried Lutze, Wolfgang Payer, Dieter Schnier