A method for producing a stereospecific polyolefin in the presence of a catalyst comprising a transition metal compound and an organometallic compound, wherein a catalyst system is used which comprises (A) a solid catalyst component prepared by reacting a homogeneous solution containing (i) at least one member selected from the group consisting of metal magnesium and a hydroxylated organic compound, and oxygen-containing organic compounds of magnesium, (ii) an oxygen-containing organic compound of aluminum and (iii) an oxygen-containing organic compound of titanium, with (iv) at least one aluminum halide compound to obtain a solid product, and further reacting to this solid product, (v) an electron-donative compound and (vi) a titanium halide compound, (B) at least one member selected from the group consisting of organometallic compounds of Groups IA, IIA, IIB, IIIB and IVB of the Periodic Table, and (C) an oxygen-containing organic compound of silicon which has no aromatic substituent and which has at least one hydrocarbon group containing a secondary or tertiary carbon directly bonded to a silicon atom.
一种在由过渡
金属化合物和有机
金属化合物组成的催化剂存在下生产立体特异性聚烯烃的方法,其中使用的催化剂体系包括(A)固体催化剂组分,其制备方法是使含有(i)至少一种选自
金属
镁和羟化有机化合物及
镁的含氧有机化合物、(ii)铝的含氧有机化合物和(iii)
钛的含氧有机化合物组成的组的均相溶液与(iv)至少一种卤化铝化合物反应,得到固体产物,并进一步与该固体产物、(v)一种电子捐赠化合物和(vi)一种卤化
钛化合物反应,(B)至少一种过渡
金属化合物和有机
金属化合物组成的组的均相溶液与(v)一种电子捐赠化合物和(vi)一种卤化
钛化合物反应,得到固体产物、(B) 至少一种选自元素周期表第 IA、IIA、IIB、IIIB 和 IVB 族有机
金属化合物组的成 分,以及 (C) 含
硅的含氧有机化合物,该化合物不含芳香族取代基,且至少有一个烃基含有 直接键合到
硅原子上的仲碳或叔碳。