Method for making and using a supported metallocene catalyst system

摘要

A method for preparing a solid catalyst system comprising at least one metallocene, which at least one metallocene is 5-(9-fluorenyl)-5-(cyclopentadienyl)-hexene-1 zirconium dichloride, the method comprising (a) combining an organoaluminoxane and said at least one metallocene in a liquid to form a liquid catalyst system, (b) conducting prepolymerization of at least one olefin in the presence of said liquid catalyst system to produce a prepolymerized solid catalyst, and (c) separating the resulting solid from the liquid and components dissolved in said liquid.