申请人:Elder J Michael
公开号:US20050010058A1
公开(公告)日:2005-01-13
A metallocene compound of formula (I) wherein M is zirconium, hafnium or titanium; X is hydrogen, halogen, or a hydrocarbyl radical optionally containing heteroatoms; R
2
, R
3
, R
4
and R
5
, are hydrogen or hydrocarbyl radicals; R
6
is a hydrocarbyl radical; L is a divalent bridging group T is a radical of formula (II), (III), (IV) or (V), wherein R
8
and R
9
are a hydrogen atom or a hydrocarbyl radical. with the proviso that at least one group among R
1
, R
5
, R
6
and R
8
is a group of formula C(R
11
)
2
R
12
wherein R
11
, equal to or different from each other, is an hydrocarbyl radical; and R
12
is hydrogen or an hydrocarbyl radical. These compounds are fit for the preparation of propylene copolymers.
化合物的公式为(I)的茂金属化合物,其中M为锆、铪或钛;X为氢、卤素或含有杂原子的烃基基团;R2、R3、R4和R5为氢或烃基基团;R6为烃基基团;L为二价桥连基团;T为公式(II)、(III)、(IV)或(V)的基团,其中R8和R9为氢原子或烃基基团。但是至少在R1、R5、R6和R8中的一个基团为公式C(R11)2R12的基团,其中R11相互相同或不同,为烃基基团;而R12为氢或烃基基团。这些化合物适用于丙烯共聚物的制备。