发明名称 |
Process for olefin polymerization |
摘要 |
A process for olefin polymerization, including polymerizing or copolymerizing an olefin in the presence of an olefin polymerization catalyst composed of: a fine particle carrier; (A) a transition metal compound of a Group IVB metal of the periodic table, containing a ligand having a cyclopentadienyl skeleton; (B) an aluminoxane compound; and optionally (C) an organoaluminum compound, wherein said aluminoxane compound has an alkyl groups to aluminum ratio of 1.3 to 2.1; said transition metal compound (A) and said organoaluminum oxy-compound (B) and said organoaluminum compound being supported on the fine particle carrier; and said solid catalyst having a bulk density of 0.3 g/cm3 to 0.5 g/cm3 and a fluidity index of 45 to 70 and an olefin polymerization process using the olefin polymerization catalyst; and an olefin prepolymerized catalyst obtained by prepolymerizing the catalyst, and an olefin polymerization process using the olefin prepolymerized catalyst. The olefin polymerization process produces a polymer showing excellent particle properties and an olefin polymer which does not stick to the wall of the polymerization reactor.
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申请公布号 |
US6043325(A) |
申请公布日期 |
2000.03.28 |
申请号 |
US19970978602 |
申请日期 |
1997.11.26 |
申请人 |
MITSUI CHEMICALS, INC. |
发明人 |
TSUTSUI, TOSHIYUKI;YOSHITSUGU, KEN;OHGIZAWA, MASAAKI;MATSUMOTO, TETSUHIRO;IMUTA, JUNICHI |
分类号 |
C08F4/642;C08F4/659;C08F4/6592;C08F10/00;C08F210/16;(IPC1-7):C08F4/64 |
主分类号 |
C08F4/642 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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