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    • 2. 发明授权
    • Catalyst for the polymerization of olefins
    • 用于烯烃聚合的催化剂
    • US06906154B2
    • 2005-06-14
    • US10181170
    • 2001-11-12
    • Masaki FushimiHirotoshi Takahashi
    • Masaki FushimiHirotoshi Takahashi
    • C08F4/654C08F4/649C08F4/651C08F10/00C08F110/06C08F4/42
    • C08F110/06C08F4/6494C08F4/651C08F2500/12
    • The present invention relates to catalyst components for the polymerization of olefins comprising a titanium compound, having at least a Ti-halogen bond, and at least two electron donor compounds supported on a Mg dihalide, said catalyst component being characterized by the fact that at least one of the electron donor compounds is selected from ethers containing two or more ether groups which are further characterized by the formation of complexes with anhydrous magnesium dichloride in an amount less than 60 mmoles per 100 g of MgCl2 and by the failure of entering into substitution reactions with TiCl4 or by reacting in that way for less than 50% by moles, and at least another electron donor compound is selected from esters of mono or polycarboxylic acids. Said catalyst components are able to produce propylene polymers which, for high values of xylene insolubility, show a broad range of isotacticity.
    • 本发明涉及用于聚合烯烃的催化剂组分,其包含至少具有Ti-卤键的钛化合物和至少两个负载在二卤化镁上的电子给体化合物,所述催化剂组分的特征在于至少 电子给体化合物之一选自含有两个或更多个醚基的醚,其进一步的特征在于与无水二氯化镁形成络合物,其量小于60毫摩尔/ 100g MgCl 2,和 由于不能与TiCl 4进行取代反应,或者以这种方式反应少于50摩尔%,并且至少另一个电子给体化合物选自单羧酸或多元羧酸的酯。 所述催化剂组分能够生产丙烯聚合物,其对于高二甲苯不溶性值显示出广泛的全同立构规整度。