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Olefin polymerization catalyst

  • US 20050032991A1
  • Filed: 07/21/2004
  • Published: 02/10/2005
  • Est. Priority Date: 07/28/2003
  • Status: Active Grant
First Claim
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1. An olefin polymerization catalyst comprising the following components (A1), (B), and (C):

  • (A1) a solid catalyst component prepared by contacting (a1) a dialkoxymagnesium, (b1) a tetravalent titanium halide, (c1) an electron donor compound, and (d1) a polysiloxane, (B) an organoaluminum compound of the following formula (1),
    R1pAlQ3-p



    (1)wherein R1 represents an alkyl group having 1-4 carbon atoms, Q represents a hydrogen atom or a halogen atom, and p represents a real number satisfying the formula 0<

    p≦

    3, and (C) an aminosilane compound of the following formula (2),
    (R2R3N) Si (OR4)3



    (2)wherein R2 represents a linear or branched alkyl group having 1-12 carbon atoms or a hydrogen atom, R3 represents a linear or branched alkyl group having 1-12 carbon atoms which may be either the same as or different from R2, and R4 represents a linear or branched alkyl group having 1-4 carbon atoms.

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