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    • 10. 发明授权
    • Components of catalysts useful for the polymerization of alpha-olefins,
and catalysts prepared therefrom
    • 可用于α-烯烃聚合的催化剂组分和由其制备的催化剂
    • US4277589A
    • 1981-07-07
    • US105912
    • 1979-12-21
    • Umberto GianniniEnrico AlbizzatiSandro Parodi
    • Umberto GianniniEnrico AlbizzatiSandro Parodi
    • C08F4/00C08F4/02C08F4/60C08F4/64C08F4/654C08F10/00C08F10/06
    • C08F10/00C08F4/022Y10S526/901Y10S526/902Y10S526/906
    • 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.The electron-donor compound (c) can be reacted with (a) or combined with (b) before the reaction of (a) and (b).Methods for preparing the new catalyst-forming components, catalysts obtained therefrom, and use of the catalysts for the production of crystalline homo- and co-polymers of the alpha-olefins are also disclosed.
    • 公开了用于制备含有至少3个碳原子的α-烯烃,α-烯烃彼此和/或与乙烯的混合物的立构规整聚合的催化剂的新的固体催化剂形成组分,所述组分通过使( a)至少一种烃溶性卤化Ti化合物; (b)通过将至少二氢卤化镁的加合物和加合物中存在的电子给体化合物的摩尔量相对于每摩尔二卤化镁至少为0.5摩尔的量分解得到的二卤化镁的产物,分解产物的特征在于 因为在其X射线粉末光谱中,代替在正常Mg二卤化物的X射线粉末光谱中出现的最大强度的衍射线,出现其强度最大值相对于所述线移动的晕圈,( c)不含活性氢原子的电子给体化合物。 电子给体化合物(c)可以在(a)和(b)的反应之前与(a)或(b)反应。 还公开了制备新催化剂形成组分的方法,由其获得的催化剂,以及用于生产α-烯烃的结晶均聚物和共聚物的催化剂的用途。