Catalyst having a ketimide ligand

Details Catalyst having a ketimide ligand Catalyst having a ketimide ligand

1998-08-26

2000-09-05

Wu, David W.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526133, 526170, 526172, 5263486, 526901, 526943, 556 32, 556 53, 502104, C08F 476

Patent

active

061144819

ABSTRACT:
A catalyst system comprises an organometallic complex of a group 4 metal having a ketimide ligand. The organometallic complex preferably also contains a cyclic ligand which forms a delocalized pi-bond with the metal (such as a cyclopentadienyl-type ligand). Preferred organometallic complexes may be activated with a so-called "substantially non coordinating anion" to form a low cost cocatalyst system which is excellent for the preparation of olefin copolymers having both high molecular weight and very low density.

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Jordan et al., Early Metal Carborane Chemistry. Organometallics 1995, 14, 2993-3001, Mar. 1995.
Section 22.3.2.5.1 Amidas and related compounds, p. 392 Anionic II Bonded Derivatives of Titanium (IV), 1993.

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