An olefin polymerization catalyst comprising: (A1) a solid catalyst component prepared by contacting (a1) a dialkoxymagnesium, (b1) a tetravalent titanium halide, (c1) an electron compound, and (d1) a polysiloxane, (B) an organoaluminum compound of the formula R
1
p
AlQ
3-p
, and (C) an aminosilane compound of the formula (R
2
R
3
N)Si (OR
4
)
3
has a high activity to hydrogen as compared with conventional catalysts and maintains the capability of producing polymers with a high stereoregularity at a high yield.
                            一种烯烃聚合催化剂,包括:(A1) 一种固体催化剂组分,通过将(a1)一种二
羰基镁、(b1)一种四价卤化
钛、(c1)一种电子化合物和(d1)一种聚
硅氧烷,(B)一种式 R 的
有机铝化合物,(C)(D)(A2)(A3)(A4)(A5)
1
p
AlQ
3-p
的
氨基
硅烷化合物,以及 (C) 式 (R
2
R
3
N)Si (OR
4
)
3
与传统催化剂相比,这种催化剂具有较高的
氢气活性,并能以较高的产率生产具有较高立体规整度的聚合物。