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SOLID CATALYST FOR OLEFIN POLYMERIZATION, METHOD OF ITS SYNTHESIS, PREPOLYMER AND METHOD OF ITS SYNTHESIS, METHOD OF ETHYLENE POLYMERIZATION, AND THE POLYMER OR COPOLYMER POWDER
SOLID CATALYST FOR OLEFIN POLYMERIZATION, METHOD OF ITS SYNTHESIS, PREPOLYMER AND METHOD OF ITS SYNTHESIS, METHOD OF ETHYLENE POLYMERIZATION, AND THE POLYMER OR COPOLYMER POWDER
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机译：烯烃聚合的固体催化剂，其合成方法，预聚物及其合成方法，乙烯聚合方法以及聚合物或共聚物粉末
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摘要
The present invention relates to a solid catalyst suitable for polymerizing olefins in a heterogeneous process, the catalyst consisting of spheroidal particles having a narrow particles size distribution and comprising (i) a support containing a magnesium dichloride and an electron-donor free from labile hydrogen, (ii) a zirconium metallocene, (iii) at least one halide of a transition metal selected amongst titanium or vanadium, and (iv) optionally an organoaluminium compound preferably an aluminoxane. The solid catalyst may be used as such or in the form of a prepolymer comprising a polyethylene or a coplymer of ethylene and an active catalyst essentially consisting of atoms of Mg, Cl, Al, Zr, Ti and/or V, preferably in the form of spheroidal particles. The solid catalyst or the prepolymer may be used for producing polyethylene or copolymer of ethylene having from 0.5 to 20 ppm of Zr and a molecular weight distribution higher than 5 and lower than 15, in the form of a powder having a bulk density from 0.3 to 0.55 g/cm3, preferably consisting of spheroidal particles.
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机译：本发明涉及适合于在非均相方法中聚合烯烃的固体催化剂，该催化剂由具有窄粒度分布的球形颗粒组成，并包含（i）含有二氯化镁的载体和不含不稳定氢的电子给体， （ii）锆茂金属，（iii）选自钛或钒的过渡金属的至少一种卤化物，和（iv）任选地有机铝化合物，优选铝氧烷。固体催化剂可以原样使用或以包含聚乙烯或乙烯的共聚物和基本上由Mg，Cl，Al，Zr，Ti和/或V的原子组成的活性催化剂的预聚物形式使用，优选以以下形式使用：球形颗粒。固体催化剂或预聚物可以以堆积密度为0.3-0.3的粉末形式用于生产具有0.5至20ppm的Zr和分子量分布高于5且低于15的聚乙烯或乙烯的共聚物。 0.55g / cm 3，优选由球形颗粒组成。
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