| 摘要 |
<p>1,219,169. Dimerisation catalysts. SUN OIL CO. 18 Nov., 1968 [22 Nov., 1967], No. 54554/ 68. Addition to 1,215,772. Heading B1E. [Also in Division C5] A dimerisation catalyst system is a combination of (a) a phosphine nickel halide co-ordination complex having any of the formulae (b) a trinydrocarbyl aluminium R 3 Al such that R 3 Al:Ni is at least 0.5:1; and (c) a Lewis acid of the group RAlX 2 ', R 3 Al 2 X 3 ' and R 2 AlX' in an amount such that the Al:Ni ratio derived from the Lewis acid is in excess of 2:1, in which formulae X = Cl, Br or I, X' is Cl or Br, R = C 1-30 alkyl, cycloalkyl, alkenyl, cyclolakenyl, aryl, aralkyl and aralkenyl.</p> |
