This invention relates to metallocene compounds represented by the formula:
catalyst systems comprising said metallocene compound and an activator or a reaction product of the metallocene compound with the at least one activator, and polymerization processes using such metallocene compounds and activators, where Cp
a
and Cp
b
are optionally-substituted cyclopentadienyl rings; A is bridging group; q is zero or 1; Q is O, O(CR
3
R
4
)
m
, (CR
3
R
4
)
m
O, or (CR
3
R
4
)
m
; m is 0 to 18; Z is (CR
3
R
4
)
2
; LA is a Lewis acid; M is a transition metal; X
1
and X
2
are independently R
5
or OR
5
; R
1
and R
2
are independently selected from optionally-substituted hydrocarbyl groups; R
3
and R
4
are independently selected from the group consisting of H, halogen, and an optionally-substituted hydrocarbyl group; and R
5
is alkyl, aryl, perfluoroalkyl, or perfluoroaryl.
这项发明涉及由以下公式表示的茂
金属化合物:
包括所述茂
金属化合物和活化剂或所述茂
金属化合物与至少一个活化剂的反应产物的催化剂体系,以及使用这种茂
金属化合物和活化剂的聚合过程,其中Cp
a
和Cp
b
是可选择取代的
环戊二烯基环;A是桥连基;q为零或1;Q为O、O(CR
3
R
4
)
m
、(CR
3
R
4
)
m
O或(CR
3
R
4
)
m
;m为0至18;Z为(CR
3
R
4
)
2
;
LA为
路易斯酸;M为过渡
金属;X
1
和X
2
独立地为R
5
或OR
5
;R
1
和R
2
独立地选自可选择取代的烃基团;R
3
和R
4
独立地选自H、卤素和可选择取代的烃基团的群;R
5
为烷基、芳基、
全氟烷基或
全氟芳基。