Silicon-bridged transition metal compounds

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

1992-05-18

1994-05-24

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526127, 526160, 526170, 5263482, 5263484, 502152, C08F 442, C08F 464

Patent

active

053149734

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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