Patent ID: 6239060
Filing Date: 2001-05-29
Classification: B01J,C08F,Y10S

Abstract:
A process for preparing a supported metallocene catalyst system comprising the steps of:(a) impregnating a support selected from the group consisting of inorganic oxides with an alcohol solution of a boron compound selected from the group consisting of boric acid, sodium tetraborate decahydrate, and trimethylborate, drying, and dehydrating the impregnated support; and(b) contacting the support with a liquid catalyst system prepared by combining in a liquid an organo aluminoxane and a metallocene having two cyclopentadienyl-type ligands selected from substituted or unsubstituted cyclopentadienyl, indenyl, benzoindenyl, tetrahydroindenyl, benzofluorenyl, octahydrofluorenyl, and fluorenyl ligands to form a supported metallocene catalyst system.