Patent ID: 6469111
Filing Date: 2002-10-22
Classification: C08F

Abstract:
A process for the gas phase polymerization of &agr;-olefins which comprises: 1) polymerizing the &agr;-olefins at temperatures of from 30 to 150Â° C. and pressures of from 5 to 80 bar, 2) in the presence of a catalyst mixture containing a) a catalyst and b) 0.1 to 5% by weight, based on the total amount of the catalyst mixture, ZnO and/or anhydrous MgO as an antistatic agent, and where 3) said catalyst mixture does not comprise: a) a chromium catalyst, and b) a MgO-supported Ziegler catalyst modified both with an alkene and with alkylaluminum hydride, and c) free MgO, where the total amount of MgO is not less than 2% by weight of the catalyst mixture, wherein the catalyst and the ZnO and/or MgO antistatic agent are premixed prior to contact with the olefins.