Abstract
The activation of metallocene catalyst by a cationic activator in the presence of triisobutylaluminium was examined in the copolymerization of ethylene and 1-butene under high pressure of 150 MPa and temperatures of 463 to 473 K. A continuously operated micro-pilot plant unit equipped with a stirred autoclave was used. The catalyst productivity determined from the amount of polymer and the catalyst feed was in the range of 100 to 300 kg polymer/g zirconium. The resulting copolymers were analyzed for their physical properties and the amount of 1-butene incorporated. The results of the polymerization with the metallocene/cationic activator system were compared to the data obtained earlier using methyl aluminoxane as the activator.
Published Version
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