| 摘要 |
PURPOSE:To obtain an olefin polymer having high activity, good particle shape and high bulk density, without necessitating the process for the removal of catalyst, by polymerizing an olefin in the presence of a catalyst consisting of a combination of a specific Zr compound with a reaction mixture of an organic Al compound and an inorganic oxide. CONSTITUTION:An olefin, preferably ethylene or ehtylene and other 1-olefin are polymerized in the presence of a catalyst composed of (A) a Zr compound of formula Cp2ZrX2 (Cp is cyclopentadienyl; X is halogen) [e.g. bis(cyclopentadienyl)zirconium chloride] and (B) a reaction mixture of (i) an inorganic oxide having OH on the surface (e.g. silica) with (ii) a reaction mixture of (iia) the alumixane of formula I or II (R is 1-4C alkyl; 1<=n<=20) and (iib) the trialkylaluminum of formula AlR3' (R' is 1-4C alkyl). |
