Catalyst structure for olefin polymerization

Details Catalyst structure for olefin polymerization Catalyst structure for olefin polymerization

2005-05-17

2005-05-17

Bell, Mark L. (Department: 1755)

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

Organic compounds

Heavy metal containing

C556S138000, C502S103000, C502S117000, C502S167000, C526S110000, C526S161000, C526S169000, C526S172000

Reexamination Certificate

active

06894180

ABSTRACT:
A catalyst system having the following formula is described herein.wherein M is a metal; each X is an atom or group banded to M and may be the same or different; R1and R2may be the same or each may be different and are substituted or unsubstituted cyclopentadienyl or aromatic groups; RBis a structural bridge between R1and R2imparting stereorigidity thereto and including at least one heteroatom bonded to M, with each of R1and R2bonded to the same or different heteroatom of RBwhich heteroatom is also bonded to M; Z is the coordination number of M and is greater than or equal to 4 and m is the number of bonds between M and heteroatoms of RB.

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