Group IV zwitterion ansa metallocene (ZAM) catalysts for .alpha.

Details Group IV zwitterion ansa metallocene (ZAM) catalysts for .alpha. Group IV zwitterion ansa metallocene (ZAM) catalysts for .alpha.

1997-08-07

1999-08-17

Smith, Jeffrey

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526 90, 526159, 526160, 502117, 502152, 556 7, 556 53, C08F 444

Patent

active

059395036

ABSTRACT:
Single component metallocene catalysts for .alpha.-olefin polymerization are disclosed. Prior art cation metallocene catalysts have required a separate anion co-catalyst like methyl aluminoxane (MAO). However, because the inventive zwitterion ansa metallocene (ZAM) catalysts have a "built-in" anion co-catalyst functionality, the need for a separate anion co-catalyst is eliminated.

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