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Multiple catalyst and reactor system for olefin polymerization and polymers produced therefrom

  • US 20040220359A1
  • Filed: 04/15/2004
  • Published: 11/04/2004
  • Est. Priority Date: 10/15/2002
  • Status: Active Grant
First Claim
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1. A continuous process to produce a branched olefin polymer comprising:

  • 1) selecting a first catalyst component capable of producing a polymer having an Mw of 100,000 or less and a crystallinity of 20% or less under selected polymerization conditions;

    2) selecting a second catalyst component capable of producing polymer having an Mw of 100,000 or less and a crystallinity of 20% or more at the selected polymerization conditions;

    3) contacting a catalyst component, one or more activators and one or more C2 to C40 olefins in a first reaction zone, at a temperature of greater than 70°

    C., and at a residence time of 120 minutes or less; and

    4) transfering the contents of the first reaction zone to a second reaction zone and further contacting the contents with a catalyst component, an activator and or one or more C2 to C40 olefins, at a temperature of greater than 70°

    C., and at a residence time of 120 minutes or less; and

    5) optionally, transferring the contents of the second reaction zone to a third reaction zone and further contacting the contents with a catalyst compound, an activator and or one or more C2 to C40 olefins, at a temperature of greater than 70°

    C., and at a residence time of 120 minutes or less; and

    6) recovering a branched olefin polymer comprising at least 50 mole% of one or more C3 to C40 olefins, where the first catalyst component is present in at least one reaction zone and the second catalyst component is present in a second reaction zone and where in at least one reaction zone the C2 to C40 olefin is a C3 to C40 alpha-olefin.

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