Titanocene-based catalyst system

摘要

A catalyst system obtainable by the process comprising the steps of contacting an adduct of formula (I) MgT2yAlQj(OR)3-j (I) wherein T is chlorine, bromine, or iodine; R is a linear or branched C1-C10 alkyl radical; y ranges from 1.00 to 0.05; and j ranges from 0.01 to 3.00; with at least one metallocene compound having titanium as central metal and at least one ligand having a cyclopentadienyl skeleton with the proviso that the metallocene compound is not previously treated with an organo-aluminium compound or with an alumoxane.