申请人:Mitsui Petrochemical Industries, Ltd.
公开号:US05412128A1
公开(公告)日:1995-05-02
The catalyst for olefin polymerization of the present invention contains R.sub.k.sup.1 R.sub.l.sup.2 R.sub.m.sup.3 M(SO.sub.3 R.sup.4) (M=Zr, Ti or Hf; R.sup.1-3 =a group having a cyclopentadienyl skeleton) as a catalyst component of a transition metal compound. According to the catalyst of the invention, an olefin polymer having excellent particle properties can be prepared with high polymerization activities, and further a copolymer having a narrow composition distribution can be prepared when two or more monomers are copolymerized. Of the above-mentioned transition metal compounds, a compound represented by the following formula is a novel compound unknown so far and shows excellent catalytic properties. ##STR1## (Cp=a group having a cyclopentadienyl skeleton, X=SO.sub.3 R, a halogen atom, R, OR, NR.sub.n, S(O).sub.q R, SiR.sub.3 or P (O).sub.q R.sub.3, n=1, 2 or 3; q=0, 1 or 2)
本发明的烯烃聚合催化剂包含R.sub.k.sup.1 R.sub.l.sup.2 R.sub.m.sup.3 M(SO.sub.3 R.sup.4) (M=Zr、Ti或Hf;R.sup.1-3=具有环戊二烯基骨架的基团)作为过渡金属化合物的催化组分。根据本发明的催化剂,可以高聚合活性制备具有优异粒子性能的烯烃聚合物,进一步,在共聚合两种或更多单体时,可以制备具有窄分子量分布的共聚物。在上述过渡金属化合物中,以下式所表示的化合物是迄今为止未知的新化合物,且表现出优异的催化性能。##STR1## (Cp=具有环戊二烯基骨架的基团,X=SO.sub.3 R、卤素原子、R、OR、NR.sub.n、S(O).sub.q R、SiR.sub.3或P(O).sub.q R.sub.3,n=1、2或3;q=0、1或2)