发明名称 |
Components of catalysts useful for the polymerization of {60 -olefins, and catalysts prepared therefrom |
摘要 |
There are disclosed new solid catalyst-forming components for use in preparing catalysts for the stereoregular polymerization of alpha-olefins containing at least 3 carbon atoms, mixtures of alpha-olefins with one another and/or with ethylene, said components being obtained by reacting (A) AT LEAST ONE HYDROCARBON-SOLUBLE HALOGENATED Ti compound; (B) A PRODUCT COMPRISING A Mg dihalide obtained by decomposition of an adduct of at least a Mg dihalide and an electron-donor compound present in the adduct in an amount of at least 0.5 mole per mole of Mg dihalide, the decomposition product being characterized in that, in its X-rays powder spectrum, instead of the diffraction line of maximum intensity which appears in the X-rays powder spectrum of the normal Mg dihalide, a halo appears whose intensity maximum is shifted with respect to said line, and (C) AN ELECTRON-DONOR COMPOUND WHICH DOES NOT CONTAIN ACTIVE HYDROGEN ATOMS.
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申请公布号 |
US4149990(A) |
申请公布日期 |
1979.04.17 |
申请号 |
US19770822547 |
申请日期 |
1977.08.08 |
申请人 |
MONTEDISON S.P.A. |
发明人 |
GIANNINI, UMBERTO;ALBIZZATI, ENRICO;PARODI, SANDRO |
分类号 |
C08F4/00;C08F4/02;C08F4/60;C08F4/64;C08F4/654;C08F10/00;(IPC1-7):C08F4/62;C08F4/10 |
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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