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    • 4. 发明授权
    • Process for producing .alpha.-olefin oligomer
    • 制备α-烯烃低聚物的方法
    • US6133495A
    • 2000-10-17
    • US952746
    • 1998-01-02
    • Hisao UrataTakayuki AoshimaSugio Nishimura
    • Hisao UrataTakayuki AoshimaSugio Nishimura
    • C07C2/30C07C2/32C08F4/69C08F10/00C07C2/24C07C2/08C07D207/00
    • C08F10/00C07C2/30C07C2/32C07C2531/02C07C2531/14C07C2531/22
    • A process for producing an .alpha.-olefin oligomer, comprising subjecting an .alpha.-olefin to oligomerization in a reaction solution containing a chromium-based catalyst produced by bringing at least a chromium compound (a), a pyrrole ring-containing compound (b), an alkyl aluminum compound (c) and a halogen-containing compound (d) into contact with each other, wherein the chromium-based catalyst is a catalyst produced by bringing the pyrrole ring-containing compound (b), the alkyl aluminum compound (c) and the halogen-containing compound (d) into contact with each other in a hydrocarbon and/or halogenated hydrocarbon solvent, and then bringing the resultant mixed solution into contact with the chromium compound (a); or a catalyst produced by bringing the chromium compound (a), the pyrrole ring-containing compound (b), the alkyl aluminum compound (c) and the halogen-containing compound (d) into contact with each other in a hydrocarbon and/or halogenated hydrocarbon solvent in the absence of .alpha.-olefin under such a condition that the concentration of the chromium compound (a) is adjusted to not more than 8.times.10.sup.-3 mol/liter. In accordance with the present invention, an .alpha.-olefin oligomer such as 1-hexene can be produced from .alpha.-olefin such as ethylene with a high yield and a high selectivity.
    • PCT No.PCT / JP97 / 00766 Sec。 371日期1998年1月2日 102(e)日期1998年1月2日PCT 1997年3月12日PCT公布。 出版物WO97 / 33924 PCT 日本公报1997年9月18日制造α-烯烃低聚物的方法,包括使α-烯烃在含有铬系催化剂的反应溶液中低聚,所述反应溶液含有至少含有铬化合物(a),含吡咯环 化合物(b),烷基铝化合物(c)和含卤素化合物(d)彼此接触,其中铬基催化剂是通过使含吡咯环的化合物(b), 烷基铝化合物(c)和含卤素化合物(d)在烃和/或卤代烃溶剂中彼此接触,然后使所得混合溶液与铬化合物(a)接触; 或通过使铬化合物(a),含吡咯环的化合物(b),烷基铝化合物(c)和含卤素化合物(d)在烃和/或其中进行接触而制备的催化剂 在不存在α-烯烃的条件下,将铬化合物(a)的浓度调节至不超过8×10 -3 mol /升的条件下的卤代烃溶剂。 根据本发明,α-烯烃低聚物如1-己烯可以以高产率和高选择性从α-烯烃如乙烯制备。