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    • 8. 发明授权
    • Ziegler-Natta catalyst systems modified during their preparation
    • 齐格勒 - 纳塔催化剂体系在制备过程中改进
    • US6156691A
    • 2000-12-05
    • US928394
    • 1997-09-12
    • Stephan HufferUlrich MollIan David McKenzieFranz LanghauserPeter KolleRoland HingmannGunther SchweierRainer HemmerichJurgen Kerth
    • Stephan HufferUlrich MollIan David McKenzieFranz LanghauserPeter KolleRoland HingmannGunther SchweierRainer HemmerichJurgen Kerth
    • C08F4/02C08F4/642C08F4/646C08F4/654C08F4/658C08F10/00B01J31/00
    • C08F10/00
    • In catalyst systems of the Ziegler-Natta type modified during their preparation and comprising as active constituentsa) a titanium-containing solid component which is obtained by reacting a compound of titanium with a compound of magnesium, a halogen, an inorganic oxide as support, a C.sub.1 -C.sub.8 -alkanol and a carboxylic ester as electron donor compound,and also as cocatalystb) an aluminum compound andc) if desired, a further electron donor compound,the titanium-containing solid component a) is prepared by first, in a first stage, admixing an inorganic oxide as support with a solution of a chlorine-free compound of magnesium in an inert solvent, stirring this mixture for from 0.5 to 5 hours at from 10 to 120.degree. C. and subsequently reacting it while stirring continually in an inert solvent with a C.sub.1 -C.sub.8 -alkanol in an at least 1.3-fold excess, based on the compound of magnesium, to give a chlorine-free intermediate, then, without purification or extraction of the intermediate, adding a compound of trivalent or tetravalent titanium and a carboxylic ester as electron donor compound to this intermediate, stirring the resulting mixture for at least 30 minutes at from 20 to 130.degree. C., subsequently filtering off and washing the solid thus obtained and subsequently, in a second stage, extracting the solid obtained from the first stage in an inert solvent comprising at least 5% by weight of titanium tetrachloride and washing it with a liquid alkane.
    • 在其制备过程中改性的齐格勒 - 纳塔型催化剂体系中,包含作为活性成分的含钛固体成分a)通过使钛化合物与镁,卤素,无机氧化物作为载体反应而得到的含钛固体成分, 作为电子给体化合物的C1-C8-链烷醇和羧酸酯,以及作为助催化剂的b)铝化合物,和c)如果需要,另外的电子给体化合物,含钛固体组分a)首先在 第一阶段,将无机氧化物作为载体与无氯化合物的镁在惰性溶剂中的溶液混合,在10至120℃下搅拌该混合物0.5至5小时,随后在持续搅拌下反应 在基于镁化合物的至少1.3倍过量的C 1 -C 8烷醇的惰性溶剂中,得到无氯中间体,然后不经纯化或萃取中间体,加入一种 磅三价或四价钛和羧酸酯作为电子给体化合物,在20至130℃下搅拌所得混合物至少30分钟,随后过滤并洗涤由此获得的固体,随后在 第二阶段,在包含至少5重量%的四氯化钛的惰性溶剂中萃取从第一阶段获得的固体,并用液体烷烃洗涤。