| abstract |
A process for preparing oligomers of ethylene, which comprises contacting ethylene, alone or in combination with one or more C₃-C₁₀ alpha olefins, at a temperature in the range of from 100 to 130 °C with a catalyst comprising the reaction product of a zirconocene and one or more alkyl aluminoxanes wherein the alkyl is selected from methyl, ethyl and mixtures thereof and the ratio of equivalents of methyl to ethyl in the product is in the range of from 4 to 0.25 and wherein the atomic ratio of aluminium to zirconium is in the range of from 0.1 to 100, and a catalyst suitable for use in the process. |