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    • 2. 发明申请
    • AN alpha -OLEFIN POLYMERIZATION CATALYST SYSTEM AND ITS USE FOR THE POLYMERIZATION OF alpha -OLEFINS
    • 一种α-烯烃聚合催化剂体系及其在α-烯烃聚合中的应用
    • WO0047638A3
    • 2000-12-07
    • PCT/FI0000098
    • 2000-02-11
    • BOREALIS ASALASTALO KAUNOLESKINEN PAULI
    • ALASTALO KAUNOLESKINEN PAULI
    • C08F4/655C08F4/44C08F4/657C08F10/00
    • C08F10/00C08F2/44C08F4/6492C08F4/6491
    • In the invention, a catalyst system for the polymerization of alpha -olefins has been prepared by a process including a catalyst activation comprising the contacting of a solid transition metal compound with an organoaluminium compound, and a catalyst prepolymerization comprising the polymerization of a premonomer in the presence of the activated catalyst. High activity, low fines polymerization is accomplished if the catalyst activation comprises a first step of contacting the solid transition metal compound with a first organoaluminium compound in the presence of an oil to give a first reaction mixture, and a second step of contacting the first reaction mixture with a second organoaluminium compound to give a second reaction mixture, the second organoaluminium compound being the same as or different from the first organoaluminium compound.
    • 在本发明中,已经通过包括催化剂活化的方法制备用于α-烯烃聚合的催化剂体系,该方法包括使固体过渡金属化合物与有机铝化合物接触,以及催化剂预聚合,该催化剂预聚合包括在 活化催化剂的存在。 如果催化剂活化包括在油存在下使固体过渡金属化合物与第一有机铝化合物接触以得到第一反应混合物的第一步骤,以及使第一反应接触第二步骤的第二步骤,则实现高活性,低细粒聚合 与第二有机铝化合物混合以得到第二反应混合物,第二有机铝化合物与第一有机铝化合物相同或不同。
    • 10. 发明申请
    • A CATALYST FOR THE (CO)POLYMERISATION OF ETHYLENE AND A METHOD FOR THE PREPARATION THEREOF
    • 乙烯(共)聚合催化剂及其制备方法
    • WO9940126A9
    • 1999-10-21
    • PCT/NO9900043
    • 1999-02-09
    • BOREALIS ASFOLLESTAD ARILDALMQUIST VIDARPALMQVIST ULFHOKKANEN HARRI
    • FOLLESTAD ARILDALMQUIST VIDARPALMQVIST ULFHOKKANEN HARRI
    • C08F4/639C08F4/6392C08F4/659C08F4/6592C08F4/69C08F10/00C08F10/02C08F110/02C08F210/16
    • C08F10/00C08F4/63912C08F4/63916C08F4/63925C08F4/65912C08F4/65925C08F10/02C08F110/02C08F210/16C08F4/63904C08F4/24C08F2500/12C08F2500/17C08F2500/07C08F210/14C08F2500/02
    • A particulate, modified chromium oxide catalyst for the polymerisation of ethylene or ethylene with alpha -olefins, comprising: a) a chromium-oxide catalyst, b) a transition metal compound, and c) a catalyst activator. A method for the preparation of the catalyst comprises the steps of: a) subjecting a chromium oxide catalyst precursor, which comprises a chromium oxide compound combined with an inorganic support, to a temperature in the range of from 400 to 950 DEG C under oxidising conditions, and b) impregnating the obtained chromium catalyst with a catalyst activator and with a transition metal compound which comprises at least one cyclopentadienylic ring bonded to said transition metal and at least ligand selected from the group comprising alkoxy, amido and hydrocarbyl radicals, halogen and hybride bonded to said transition metal, which cyclopentadienylic ring may contain hetero atoms, be unsubstituted or substituted, be bonded to said transition metal through a bridge, and optionally annealed to other substituted or unsubstituted ring structures, and if two cyclopentadienyl rings are present they may be bonded to each other through a bridge, and c) subjecting the thus obtained particulate catalyst to drying conditions. This catalyst is suitable for producing polyethylenes under conditions of continuous feeding of all reactants.
    • 一种用于乙烯或乙烯与α-烯烃聚合的微粒改性氧化铬催化剂,包括:a)氧化铬催化剂,b)过渡金属化合物,和c)催化剂活化剂。 用于制备催化剂的方法包括以下步骤:a)在氧化条件下,使包含与无机载体结合的氧化铬化合物的氧化铬催化剂前体的温度在400-950℃的范围内 ,和b)用催化剂活化剂和过渡金属化合物浸渍得到的铬催化剂,所述过渡金属化合物包含至少一个与所述过渡金属键合的环戊二烯基环和至少选自烷氧基,酰氨基和烃基的配体,卤素和混合基 键合到所述过渡金属上,该环戊二烯基环可以含有杂原子,未被取代或被取代,通过桥键与所述过渡金属键合,并且任选地与其它取代或未取代的环结构退火,并且如果存在两个环戊二烯基环,它们可以是 通过桥键相互键合,以及c)对由此获得的颗粒进行催化 st至干燥条件。 该催化剂适用于在连续加入所有反应物的条件下生产聚乙烯。