Polymerization catalysts based on transition metal complexes wit

Details Polymerization catalysts based on transition metal complexes wit Polymerization catalysts based on transition metal complexes wit

1994-12-19

1996-07-23

McFarlane, Anthony

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

502103, 502117, 502118, 502152, 556 56, 556 54, 556 53, 556 52, C07D20700, C07D20900, C07F 700, B01J 3100

Patent

active

055391249

ABSTRACT:
Disclosed is an azametallocene polymerization catalyst having the general formula ##STR1## where L is a ligand, or mixture of ligands, each having 4 to 30 carbon atoms and containing at least two fused rings, one of which is a pyrrolyl ring, Cp is a ligand containing a cyclopentadienyl group, B is a Lewis acid, Y is a halogen, alkoxy from C.sub.1 to C.sub.20, siloxy from C.sub.1 to C.sub.20, or mixtures thereof, M is titanium, zirconium, or mixtures thereof, m is 1 to 4, and n is 0 to 2, p is 0 to 2, q is 0 to 1, and m+n+q=4. The catalyst is useful in polymerizing unsaturated olefinic monomers such as ethylene.

REFERENCES:
patent: 5376612 (1994-12-01), Reagen et al.
patent: 5382738 (1995-01-01), Reagen et al.
patent: 5434116 (1995-07-01), Sone et al.
King, Inorganic Chemistry (1964), 3, 796.
Joshi, Journal of Organometallic Chemistry (1964), 1, 471.
VanBynum et al., Canadian Journal of Chemistry (1986), 64, 1304.
Ladipo et al., Inorganic Chemistry (1990), 29, 4172.
J. Zakrzewski, Heterocycles (1990), 31, 383.

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