Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Organic compound containing
Patent
1998-07-27
2000-11-21
Wu, David W.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Organic compound containing
502155, 526133, 526134, 526160, 526161, 5263486, 526347, B01J 3102, B01J 3118, C08F 444
Patent
active
061502979
ABSTRACT:
Group 4 metal complexes comprising a cyclopentaphenanthreneyl ligand, catalytic derivatives thereof and their use as olefin polymerization catalysts, especially for the copolymerization of ethylene and a vinylaromatic monomer are disclosed. The resulting copolymers are uniform, pseudo-random copolymers of ethylene and a vinylaromatic monomer having a cluster index, CI.sub.ES less than 1.0 and a polymerized vinylaromatic monomer content less than 50 mole percent.
REFERENCES:
patent: 5932669 (1999-08-01), Rohrmann et al.
Schneider et al., ansa-Zirconocene Complexes with Modified Benzindenyl Ligands: Synthese, Crystal Structure, and Properties as Propene Polymerization Catalysts, Organometallics 16 (15), 3413-3420, Jul. 1997.
Schneider et al., Cyclopenta[1]phenathrene titanium trichloride derivatives: syntheses, crystal structure and properties as catalysts for styrene polymerization, JOMC 545-546, (Oct. 1997) 291-295.
Arriola Daniel J.
Campbell, Jr. Richard E.
Shankar Ravi B.
Timmers Francis J.
Harlan R.
The Dow Chemical Company
Wu David W.
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