Silicon-bridged transition metal compounds

Details Silicon-bridged transition metal compounds Silicon-bridged transition metal compounds

1991-02-26

1992-06-09

Prescott, Arthur C.

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

Organic compounds

Heavy metal containing

556 9, 556 11, 556 52, 556 53, 502117, C07F 702

Patent

active

051208679

ABSTRACT:
Silicon-bridged transition metal compounds and their use as .alpha.-olefin polymerization catalysts are disclosed. A chiral silicon-bridged metallocene catalyst polymerizes .alpha.-olefins to high isotacity with a minimum of inversions at high rates of catalyst activity. The catalyst is easily made in high yields and readily separated from atactic meso forms.

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Cotton et al., Advanced Inorganic Chemistry, New York, J. Wiley & Sons; 1980.
Collman et al., Principles and Applications of Organotransition Metal Chemistry, Mill Valley, CA, Univ. Science Books, (1980).
Kaminsky et al., Transition Metals and Organometallics as Catalysts for Olefin Polymerization, 1987, pp. 281-289.
Ewen et al., Propylene Polymerizations with Group IV Metalocene/Alumoxane Systems, Hamburg International Symposium, Sep. 1987.

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