| 摘要 |
<p>A novel transition metal compound represented by general formula (I) and a process for polymerizing an olefin in the presence of this compound and a cocatalyst, wherein A?1, A2, A3 and A4¿ represent each cyclopentadienyl, indenyl, fluorenyl or a derivative thereof; A5 represents C¿4? to C30 hydrocarbondiylidene; a pair of A?1 and A2¿ and a pair of A?3 and A4¿ are each combined with one and the same carbon atom of A5 to form a bridged structure; R?1 and R2¿ may be the same or different from each other and each represents halogen, hydrogen, C¿1? to C10 alkyl, silicon-containing alkyl, C6 to C20 aryl, alkylaryl, arylalkyl or haloaryl; and M?1 and M2¿ may be the same or different from each other and each represents titanium, zirconium or hafnium. The use of a combination of the above transition metal compound with other well-known transition metal compound(s) enables the production of a polyolefin with a wide molecular weight distribution.</p> |
