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    • 10. 发明授权
    • Process for activation of titanium and vanadium catalysts useful in
ethylene polymerization
    • 活化用于乙烯聚合的钛和钒催化剂的方法
    • US4755495A
    • 1988-07-05
    • US941363
    • 1986-12-15
    • Kevin J. CannDavid L. MilesFrederick J. Karol
    • Kevin J. CannDavid L. MilesFrederick J. Karol
    • C08F10/00C08F4/64
    • C08F10/00
    • A process for activating a titanium or vanadium compound and producing polyethylene comprising (i) dissolving a divalent magnesium halide and a Lewis acid having the formula R.sub.m A1X.sub.n or R.sub.m BX.sub.n wherein R is an alkyl or aromatic radical, each radical having 1 to 12 carbon atoms and each R being alike or different; X is a halogen atom; m is an integer from 0 to 3; n is an integer from 0 to 3; and m+n equals 3, in an excess of electron donor compound selected from the group consisting of alkyl esters of alkyl and aromatic carboxylic acids and alkyl and cycloalkyl ethers, each compound having 2 to 12 carbon atoms, in such a manner that a magnesium halide/Lewis acid/electron donor complex is formed; (ii) separating the complex from excess electron donor compound; and (iii) introducing (a) the complex, the titanium or vanadium compound, and a hydrocarbyl aluminum compound and (b) ethylene into a reactor in such a manner that the titanium or vanadium compound is activated and polyethylene is produced.
    • 一种用于活化钛或钒化合物并生产聚乙烯的方法,包括(i)溶解二价卤化镁和具有式RmA1Xn或RmBXn的路易斯酸,其中R是烷基或芳基,每个基团具有1至12个碳原子, R相同或不同; X是卤原子; m是0至3的整数; n为0〜3的整数。 并且m + n等于3,过量的选自烷基和芳族羧酸的烷基酯和烷基和环烷基醚的电子给体化合物,每个化合物具有2至12个碳原子,以使镁 形成卤化物/路易斯酸/电子给体络合物; (ii)将复合物与过量的电子给体化合物分离; 和(iii)将复合物,钛或钒化合物和烃基铝化合物和(b)乙烯以使得钛或钒化合物活化并且生产聚乙烯的方式引入反应器中。