Patent ID: 6506858
Filing Date: 2003-01-14
Classification: C08F

Abstract:
A process for the Preparation of an olefin polymerization catalyst material, said process comprising the steps of:(a) treating a particulate support material with an alkylating agent; (b) contacting the alkylating agent treated support material with a procatalyst comprising at least one ligand of formula 2:where groups R1, R2, R3 and R4 are the same or different and are selected from the group consisting of H, C1-C12 alkyl, alkenyl, aryl, alkylaryl, combinations thereof, bridged structures formed from R1 to R4 taken together, optionally the groups R1, R2, R3 and R4 comprising SiH3, SiH2R5, SiHR6R7, and SiR8R9R10 groups instead of one or more carbon atoms, wherein R5-R10 are selected from the group consisting of H, C1-C12 alkyl, alkenyl, aryl, and alkylaryl; optionally (c) contacting the support material with an ionic catalyst activator; and optionally (d) recovering the catalyst-carrying support material.