Process

Abstract

A process for preparing a catalyst, and in particular for preparing a catalyst suitable for polymerisation of olefins. In particular, there is provided a process for preparing an alpha-olefin polymerisation catalyst composition, the process comprising (1) reacting a silica support with a dialkylmagnesium compound of the formula RMgR1, where R and R1 are the same or different C2-C12 alkyl groups, in order to form a silica supported organomagnesium composition, (2) reacting at least one magnesium halide with at least one organic oxygen-comprising compound of titanium to form a Mg-Ti liquid complex, and contacting the silica supported organomagnesium composition with the formed Mg-Ti liquid complex, and (3) reacting the modified supported organomagnesium composition of step (2) with a titanium halide.

Dependencies are inferred from the claim text.