| 摘要 |
<p>A process for producing an olefin living polymer having a molecular weight distribution (Mw/Mn) of from 1 to 1.3 which comprises polymerizing a C2-20 olefin monomer at a low temperature in the presence of a catalyst comprising (A) a hafnium or zirconium compound having one or two cyclopentadienyl skeletons and (B) a triphenylboron compound or tetraphenylboron salt compound and optionally containing (C) a specific mono-, di-, or trialkylaluminum compound. When the catalyst containing the zirconium compound is one prepared further using (D) a titanium compound, a higher polymerization temperature can be used.</p> |
