Patents by Inventor A. J. Brandolini

A. J. Brandolini 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).

  • Co-catalysts for metallocene complexes in olefin polymerization reactions
    Patent number: H2058
    Abstract: The present invention provides cocatalysts for activating metallocene complexes in olefin polymerization reactions, and metallocene catalyst systems using the cocatalysts. The cocatalysts of the present invention include: (a) a halo-organoaluminum compound of the formula AlnRmX3n-m, where Al is aluminum, each R is independently a Cl to C4 alkyl group, X is a halide, n is 1 or 2, and m is determined by the valency of Al; and (b) a dialkylmagnesium compound of the formula MgR′2, where Mg is magnesium and R′ is a C2 to C6 alkyl group. The components (a) and (b) are used in amounts such that the molar ratio of Al:Mg is at least 2, preferably from 2:1 to 5:1.
    Type: Grant
    Filed: September 18, 2000
    Date of Patent: January 7, 2003
    Assignee: Mobil Oil Corporation
    Inventors: A. J. Brandolini, Yury Viktorovich Kissin, Robert Ivan Mink, Thomas E. Nowlin