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    • 1. 发明授权
    • Method for producing polyolefin
    • 生产聚烯烃的方法
    • US5330949A
    • 1994-07-19
    • US515782
    • 1990-04-26
    • Hideo FunabashiAkira TanakaRikuo OhnishiToshikazu KasaharaTakashi Yamawaki
    • Hideo FunabashiAkira TanakaRikuo OhnishiToshikazu KasaharaTakashi Yamawaki
    • C08F4/02C08F10/00C08F4/654C08F4/656
    • C08F10/00Y10S526/943
    • A method for producing a polyolefin is disclosed which comprises polymerizing an .alpha.-olefin in the presence of a catalyst composition comprising (A) a solid catalyst component prepared by contacting (a) a solid component comprising a magnesium alkoxide and/or a magnesium salt of a fatty acid supported on an inorganic oxide composed of at least one member selected from the group consisting of oxides of elements belonging to Groups II, III and IV of the periodic table and/or a composite inorganic oxide containing at least one member selected from the group consisting of oxides of elements belonging to Groups II, III and IV of the periodic table, the inorganic oxide or composite inorganic oxide having a surface hydroxide concentration of 3 .mu.mol/m.sup.2 or less, (b) an electron donating compound and (c) a titanium halide, (B) an organic metal compound, and (C) an electron donating compound.According to the method, a step of removing the catalyst residue: from the polypropylene produced can be eliminated and the products have well balanced mechanical strength such as stiffness and impact strength.
    • 公开了一种生产聚烯烃的方法,其包括在催化剂组合物存在下聚合α-烯烃,所述催化剂组合物包含(A)通过使(a)包含烷氧基镁和/或镁盐的固体组分与 负载在由选自元素周期表第II,III和Ⅳ族的元素的氧化物中的至少一种构成的无机氧化物上的脂肪酸和/或含有选自以下的至少一种的复合无机氧化物: 由元素周期表II,III和IV族元素的氧化物,表面氢氧化物浓度为3μmol/ m 2以下的无机氧化物或复合无机氧化物组成的组,(b)给电子化合物和(c )卤化钛,(B)有机金属化合物,和(C)给电子化合物。 根据该方法,可以消除从生产的聚丙烯中除去催化剂残留物的步骤,并且产品具有良好平衡的机械强度,例如刚度和冲击强度。