| 摘要 |
A process for dimerizing lower alpha -olefins using a catalyst comprising (A) at least one nickel compound selected from the group consisting of organic acid salts of nickel, inorganic acid salts of nickel and complexes of nickel, (B) a trialkyl aluminum, (C) at least one phosphorus-containing compound selected from the group consisting of tri-valent phosphorus compounds represented by the formulae: (I) PR1R2R3, (II) (R21N)nPR3-n2 and (III) (R1O)nPR3-n2 (in which R1, R2 and R3 are each an alkyl, cycloalkyl, alkenyl, aryl or aralkyl group having up to 18 carbon atoms and n is an integer of 1 to 3), and (D) a halogenated phenol of the formula (IV), <IMAGE> wherein X1, X2, X3, X4 and X5 are each a halogen or hydrogen atom or a hydroxyl group and at least one of them is a halogen atom. |
