Bis fluorenyl metallocenes and use thereof

Details Bis fluorenyl metallocenes and use thereof Bis fluorenyl metallocenes and use thereof

1995-06-01

1997-06-10

Delmendo, Romulo H.

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

Organic compounds

Heavy metal containing

556 28, 526126, 526127, 526150, 526160, 526170, 526943, 502117, C07F 1700

Patent

active

056377444

ABSTRACT:
Group IVB metal metallocenes of bis(1-methyl fluorenyl) diphenyl silane and bis(1-methyl fluorenyl) dimethyl tin are disclosed, plus their use in the production of polyolefins, including isotactic polypropylene.

REFERENCES:
patent: 5017714 (1991-05-01), Welborn, Jr.
patent: 5350817 (1994-09-01), Winter et al.
patent: 5436305 (1995-07-01), Alt et al.
Resconi, et al., "High Molecular Weight Amorphous Polypropylene from Metallocene/MAO Catalysts", Polymer Preprints, 35(1), 663-664 (1994).
Spaleck, et al. "Stereorigid Metallocenes: Correlations Between Structure and Behaviour in Homopolymerizations of Propylene," New J. Chem., 14, pp. 499-503 (1990).
Razavi, Dr. Abbas Paper, Electronic and Steric Influence of the Cyclopentadienyl Substituents and the Role of the Bridge on the Catalytic Behaviour of ANSA Metallocene Complexes in Stereospecific Polymerization of .alpha.-Olefin in Homogeneous Catalysis, SPO Conference (1992).

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