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    • 9. 发明授权
    • Catalyst for the homopolymerization or copolymerization of ethylene and
process for its preparation
    • 用于乙烯均聚或共聚的催化剂及其制备方法
    • US5821189A
    • 1998-10-13
    • US444870
    • 1995-05-19
    • Fausto CalderazzoGuido PampaloniFrancesco MasiAndrea Vallieri
    • Fausto CalderazzoGuido PampaloniFrancesco MasiAndrea Vallieri
    • C08F4/60C08F4/619C08F4/642C08F4/659C08F4/6592C08F10/00B01J31/00B01J37/00C08F4/02
    • C08F10/00C08F4/61904C08F4/61912C08F4/659
    • A catalyst for the (co)polymerization of ethylene is obtained by a process comprising the contact of the following components (A), (B), (C) and (D) in the respective molar ratios (1):(0.5-2):(0-25):(0-15): (A): a bivalent arene of titanium having the formula Ti (.eta..sup.6 -arene)(AlR.sub.x X.sub.4-x).sub.2 ; wherein: "arene" indicates benzene, or benzene substituted with from 1 to 6 C.sub.1 -C.sub.10 alkyl groups; each X independently represents a chlorine, bromine or fluorine atom; R is a C.sub.1 C.sub.10 alkyl group, linear or branched; "x" is a number varying from 0.5 to 2.5; (B): a compound or a mixture of compounds selected from the group consisting of the chlorides or bromides of the metals titanium, zirconium, vanadium, hafnium, tin, germanium, cerium or osmium, in the oxidation state (+4), and antimony or vanadium in the oxidation state (+5), and the derivatives of these metals in said oxidation state with oxygenated binders wherein at least one oxygen atom is bound or co-ordinated to the metal; (C): an aluminum alkyl or halide of aluminum alkyl (D): an organic chloroderivative selected from: (a) di- or poly-chloroalkanes; (b) alkyl esters of aliphatic carboxylic acids di- or tri-chlorosubstituted on the carbon in the alpha position with respect to the carboxyl; and (c) derivatives of chlorotriphenylemethane or dichlorodiphenylmethane having a carboxyalkyl group in the para position of at least one of the phenyl rings.
    • 通过包括以下组分(A),(B),(C)和(D)以相应的摩尔比(1):(0.5-2)的接触的方法获得乙烯(共)聚合的催化剂 )(0-25):(0-15):(A):具有式Ti(eta 6-芳烃)(AlRxX4-x)2的钛的二价芳烃;其中:“芳烃”表示苯, 具有1至6个C 1 -C 10烷基; 每个X独立地表示氯,溴或氟原子; R是直链或支链的C1C10烷基; “x”是从0.5到2.5的数字; (B):处于氧化态(+4)的金属钛,锆,钒,铪,锡,锗,铈或锇的氯化物或溴化物的化合物或化合物的混合物,以及 处于氧化态(+5)的锑或钒,以及所述氧化态的这些金属与氧化粘合剂的衍生物,其中至少一个氧原子与金属结合或配位; (C):烷基铝的烷基铝或卤化物(D):有机氯化物选自:(a)二 - 或多氯代烷烃; (b)在相对于羧基的α位上的碳上二或三氯取代的脂族羧酸的烷基酯; 和(c)在至少一个苯环的对位具有羧基烷基的氯三苯甲烷或二氯二苯基甲烷的衍生物。