The present invention provides a metallocene compound which produces an olefin polymer having a high molecular weight with a high stereoregularity. The metallocene compound has the following formula (1):
Q(C
5
H
4-m
R
1
m
)(C
5
H
4-n
R
2
n
)MXY (1)
wherein (C
5
H
4-m
R
1
m
) and (C
5
H
4-n
R
2
n
) each independently represent a cyclopentadienyl group;
C
5
H
4-m
and C
5
H
4-n
each independently represent a cyclopentadienyl ring;
m represents an integer of 1-3;
n represents an integer of 2 or 3;
R
1
and R
2
are each independently a substituent bonded respectively to C
5
H
4-m
and C
5
H
4-n
, and represent a hydrocarbon group of 1-20 carbon atoms, a silicon-containing hydrocarbon group of 1-20 carbon atoms or a heteroaromatic group;
each R
1
m
and each R
2
n
may be the same or different;
one pair of R
2
's in the R
2
n
are bonded to each other to form at least one ring;
Q represents a divalent group for cross-linking (C
5
H
4-m
R
1
m
) and (C
5
H
4-n
R
2
n
);
M represents a titanium atom, a zirconium atom or a hafnium atom; and
X and Y are the same or different and each a hydrogen atom, a halogen atom or a hydrocarbon group.
本发明提供一种
金属茂化合物,可产生具有高分子量和高立体规整性的烯烃聚合物。该
金属茂化合物具有以下
化学式(1):Q(
C5H4-mR1m)( -nR2n)MXY (1)
其中( -mR1m)和( -nR2n)各自独立地代表一个
环戊二烯基团;
-m和 -n各自独立地代表一个
环戊二烯环;
m代表1-3的整数;
n代表2或3的整数;
R1和R2各自独立地表示分别与 -m和 -n结合的取代基,代表1-20个碳原子的烃基、1-20个碳原子的含
硅烃基或杂环芳基;
每个R1和每个R2n可以相同也可以不同;
R2n中的一对R2相互结合形成至少一个环;
Q表示用于交联( -mR1m)和( -nR2n)的二价基团;
M表示
钛原子、
锆原子或
铪原子;
X和Y相同或不同,各自是氢原子、卤素原子或烃基。