发明名称 |
Catalysts for polymerizing alpha-olefins and process for polymerizing alpha-olefins in contact with said catalysts |
摘要 |
New highly active and highly stereospecific catalysts for the polymerization of alpha-olefins are disclosed, the starting components of which are (a) an organometallic-compound of Al free from halogen atoms bound directly to the Al atom; (b) an electron-donor compound (such as a Lewis base) in an amount such that 15% to 100% of the organometallic Al compound (a) is combined with the electron-donor compound; and (c) a solid component comprising, at least on the surface, the reaction product of a halogenated Mg compound with a tetravalent Ti compound and with an electron-donor compound, the molar ratio electron-donor compound/Ti being higher than 0.2, and the molar ratio halogen atoms/Ti being higher than 4. Processes for polymerizing the alpha-olefins and mixtures thereof with ethylene in contact with the new catalysts are also disclosed.
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申请公布号 |
US4226741(A) |
申请公布日期 |
1980.10.07 |
申请号 |
US19780934539 |
申请日期 |
1978.08.17 |
申请人 |
MONTEDISON S.P.A. |
发明人 |
LUCIANI, LUCIANO;KASHIWA, NORIO;BARBE, PIER C.;TOYOTA, AKINORI |
分类号 |
C08F4/00;C08F4/02;C08F4/16;C08F4/60;C08F4/64;C08F4/645;C08F4/646;C08F4/649;C08F10/00;C08F110/06;(IPC1-7):C08F4/64 |
主分类号 |
C08F4/00 |
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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