Bridged, chiral metallocenes, processes for their preparation an

Details Bridged, chiral metallocenes, processes for their preparation an Bridged, chiral metallocenes, processes for their preparation an

1992-08-05

1995-02-21

Dees, Jose G.

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

Organic compounds

Heavy metal containing

556 1, 556 53, 526126, 526127, 526160, C07F 1700, C08F 444

Patent

active

053917898

ABSTRACT:
Bridged, chiral metallocenes, processes for their preparation and their use as catalysts
Metallocenes of the formula I ##STR1## in which, preferably, M.sup.1 is titanium, zirconium or hafnium, R.sup.1 is a radical ##STR2## in which M.sup.2 is carbon or silicon, R.sup.4 and R.sup.5 are identical and are hydrogen or an alkyl group, p is 1 or 2, R.sup.2 is hydrogen or an alkyl group and the radicals R.sup.3 are identical and are halogen or an alkyl group, form, together with an aluminoxane as a cocatalyst, a suitable catalyst system for olefin polymerization.

REFERENCES:
patent: 4769510 (1988-09-01), Kaminsky et al.
Wild, Ferdinand et al., J. Organomet. Chem. 288, 63-67 (1985).

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