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Tetrahydroindacenyl catalyst composition, catalyst system, and processes for use thereof

  • US 9,796,795 B2
  • Filed: 05/03/2016
  • Issued: 10/24/2017
  • Est. Priority Date: 01/14/2015
  • Status: Active Grant
First Claim
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1. A compound represented by the formula:

  • TyCp′

    mMGnXq wherein;

    Cp′

    is a tetrahydroindacenyl group which is optionally substituted or unsubstituted, provided that when Cp′

    is tetrahydro-s-indacenyl;

         1) the 3 and/or 4 positions are not aryl or substituted aryl,

         2) the 3 position is not directly bonded to a group 15 or 16 heteroatom,

         3) there are no additional rings fused to the tetrahydroindacenyl ligand,

         4) T is not bonded to the 2-position, and

         5) the 5, 6, or 7-position is geminally disubstituted;

    M is a group 3, 4, 5, or 6 transition metal;

    G is a heteroatom group represented by the formula JRiz where J is N, P, O or S, Ri is a C1 to C20 hydrocarbyl group, and z is 1 or 2;

    T is a bridging group;

    y is 0 or 1;

    X is a leaving group;

    m=1;

    n=1, 2 or 3;

    q=1, 2 or 3; and

    the sum of m+n+q is equal to the oxidation state of the transition metal.

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