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Process for producing polyolefin elastomer employing a metallocene catalyst

  • US 6,136,744 A
  • Filed: 12/15/1997
  • Issued: 10/24/2000
  • Est. Priority Date: 04/10/1996
  • Status: Expired due to Term
First Claim
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1. A cation-generating cocatalyst for activating a metallocene procatalyst, the cocatalyst comprising a metal- and/or metalloid-containing first component capable of exchanging one or more non-cyclopentadienyl ligands coordinated to the transition metal of the metallocene up to the full number of such ligands present with, independently, a hydrogen atom, a carbohydryl group containing up to about 20 carbon atoms or an oxyhydrocarbyl group containing up to 20 carbon atoms;

  • a neutral metal- and/or metalloid-containing second component having at least one aryl group possessing at least one electron-withdrawing substituent; and

    , an anionic metal containing third component having at least one aryl group possessing at least one electron-withdrawing substituent, alone or in combination with a metalloid-containing third component having at least one aryl group possessing at least one electron-withdrawing substituent.

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