Patent ID: 7598200

Claim:
A method for the preparation of heterogenised catalyst component comprising: a) providing a halogenated precursor component characterized by the formula: X[CH 2 ] n CH3tm (I) b) reacting the halogenated precursor with an ionic liquid precursor IL to prepare an ionic liquid of the formula: IL + X − c) mixing in a solvent the ionic liquid IL + X − with a metallocene catalyst component of the formula: R″(Cp)(Cp′)M Q 2 (II) wherein: Cp and Cp′ are each independently a substituted or unsubstituted cyclopentadienyl group, M is a metal from Group 4 of the Periodic Table, R″ is a structural bridge imparting stereorigidity between Cp and Cp′ and Q is a halogen or an alkyl having from 1 to 12 carbon atoms wherein the amounts of ionic liquid and catalyst component are in a molar ratio (ionic liquid)/(catalyst component) of from 5:1 to 1:5; d) heterogenising the ionic liquid/metallocine system of subparagraph c) by addition of an apolar solvent to induce a precipitation reaction; and e) retrieving a metallocene catalyst component heterogenised by said ionic liquid.