Patents by Inventor Edwar S. Shamsoum

Edwar S. Shamsoum 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).

  • Diethylaluminum alkoxide/aluminum alkyl co-catalyst for improved polymerization yield
    Patent number: 5254517
    Abstract: This invention relates to a catalyst system using a diethylaluminum alkoxide-aluminum alkyl cocatalyst and to a process for polymerization of olefins using the catalyst system. Use of this catalyst system increases polymerization yield. The diethylaluminum alkoxide is preferably diethylaluminum ethoxide and the aluminum alkyl is preferably triethyl aluminum. The mole-to-mole ratio of diethylaluminum alkoxide to aluminum alkyl ranges from 0.05 to 0.2. This invention is effective for the aluminum/transition metal ratio for the polymerization of olefins ranges from about 100 to about 500. Polymerization yield increases of greater than 10% are realized.
    Type: Grant
    Filed: October 11, 1991
    Date of Patent: October 19, 1993
    Assignee: Fina Technology, Inc.
    Inventors: Edwar S. Shamsoum, David J. Rauscher, Shabbir Malbari