Process for olefin polymerization
    5.
    发明授权
    Process for olefin polymerization 失效
    烯烃聚合方法

    公开(公告)号:US6043325A

    公开(公告)日:2000-03-28

    申请号:US978602

    申请日:1997-11-26

    摘要: A process for olefin polymerization, including polymerizing or copolymerizing an olefin in the presence of an olefin polymerization catalyst composed of: a fine particle carrier; (A) a transition metal compound of a Group IVB metal of the periodic table, containing a ligand having a cyclopentadienyl skeleton; (B) an aluminoxane compound; and optionally (C) an organoaluminum compound, wherein said aluminoxane compound has an alkyl groups to aluminum ratio of 1.3 to 2.1; said transition metal compound (A) and said organoaluminum oxy-compound (B) and said organoaluminum compound being supported on the fine particle carrier; and said solid catalyst having a bulk density of 0.3 g/cm.sup.3 to 0.5 g/cm.sup.3 and a fluidity index of 45 to 70 and an olefin polymerization process using the olefin polymerization catalyst; and an olefin prepolymerized catalyst obtained by prepolymerizing the catalyst, and an olefin polymerization process using the olefin prepolymerized catalyst. The olefin polymerization process produces a polymer showing excellent particle properties and an olefin polymer which does not stick to the wall of the polymerization reactor.

    摘要翻译: 一种烯烃聚合方法,包括在烯烃聚合催化剂存在下聚合或共聚烯烃,所述烯烃聚合催化剂由微粒载体构成; (A)周期表第ⅣB族金属的过渡金属化合物,其含有具有环戊二烯基骨架的配位体; (B)铝氧烷化合物; 和任选地(C)有机铝化合物,其中所述铝氧烷化合物具有1.3至2.1的烷基与铝的比率; 所述过渡金属化合物(A)和所述有机铝氧化合物(B)和所述有机铝化合物负载在所述微粒载体上; 所述固体催化剂的体积密度为0.3g / cm 3〜0.5g / cm 3,流动性指数为45〜70,使用该烯烃聚合催化剂的烯烃聚合方法; 和通过使催化剂预聚合获得的烯烃预聚合催化剂和使用烯烃预聚合催化剂的烯烃聚合方法。 烯烃聚合方法产生显示出优异的颗粒性能的聚合物和不粘在聚合反应器壁上的烯烃聚合物。

    Olefin polymerization catalyst and process for olefin polymerization
    6.
    发明授权
    Olefin polymerization catalyst and process for olefin polymerization 失效
    烯烃聚合催化剂和烯烃聚合方法

    公开(公告)号:US5795838A

    公开(公告)日:1998-08-18

    申请号:US513088

    申请日:1995-08-09

    摘要: A solid olefin polymerization catalyst comprising: a fine particle carrier; (A) a transition metal compound of a Group IVB metal of the periodic table, containing a ligand having a cyclopentadienyl skeleton; (B) an organoaluminum oxy-compound; and optionally (C) an organoaluminum compound, wherein said organoaluminum oxy-compound has an alkyl to aluminum ratio of 1.3 to 2.1; said transition metal compound (A) and said organoaluminum oxy-compound (B) and said organoaluminum compound being supported on the fine particle carrier; and said solid catalyst having a bulk density of 0.3 g/cm.sup.3 to 0.5 g/cm.sup.3 and a fluidity index of 45 to 70 and an olefin polymerization process using the olefin polymerization catalyst; and an olefin prepolymerized catalyst obtained by prepolymerizing the catalyst, and an olefin polymerization process using the olefin prepolymerized catalyst. The olefin polymerization catalyst and the olefin prepolymerization catalyst when used to carry out the polymerization of olefins hardly produces a fine-powdery polymer and a polymer showing excellent particle properties can be obtained. Moreover, the resulting olefin polymer does not stick to the wall of the polymerization reactor.

    摘要翻译: 一种固体烯烃聚合催化剂,包括:细颗粒载体; (A)周期表第ⅣB族金属的过渡金属化合物,其含有具有环戊二烯基骨架的配位体; (B)有机铝氧化合物; 和任选的(C)有机铝化合物,其中所述有机铝氧化合物的烷基铝比例为1.3-2.1; 所述过渡金属化合物(A)和所述有机铝氧化合物(B)和所述有机铝化合物负载在所述微粒载体上; 所述固体催化剂的体积密度为0.3g / cm 3〜0.5g / cm 3,流动性指数为45〜70,使用该烯烃聚合催化剂的烯烃聚合方法; 和通过使催化剂预聚合获得的烯烃预聚合催化剂和使用烯烃预聚合催化剂的烯烃聚合方法。 当用于进行烯烃聚合的烯烃聚合催化剂和烯烃预聚合催化剂几乎不产生细粉状聚合物,并且可以获得显示出优异的颗粒性能的聚合物。 此外,所得烯烃聚合物不粘附到聚合反应器的壁。