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John A Ewen: Hafnium metallocene catalyst for the polymerization of olefins. Fina Technology, John K Abokhair, Stuart L Watt, M Norwood Cheairs, December 27, 1988: US04794096 (318 worldwide citation)

The present invention provides a catalyst system for the polymerization and copolymerization of olefins with the system comprising a chiral, stereorigid hafnium metallocene catalyst in combination with an aluminum compound. The aluminum compound is preferably an alumoxane and may be a mixture of alu ...


2
Ewen John A: Hafnium metallocene catalyst for the polymerization of olefins.. Cosden Technology, October 5, 1988: EP0284707-A1 (54 worldwide citation)

The present invention provides a catalyst system for the polymerization and copolymerization of olefins with the system comprising a chiral, stereorigid hafnium metallocene catalyst in combination with an aluminum compound. The aluminum compound is preferably an alumoxane and may be a mixture of alu ...


3
Ewen John A: Catalyseur hafnium-metallocene utilise pour la polymerisation dolefines, Hafnium metallocene catalyst for the polymerization of olefins. Fina Technology, GOWLING LAFLEUR HENDERSON, CA1302384

HAFNIUM METALLOCENE CATALYST FOR THE POLYMERIZATION OF OLEFINS ABSTRACT The, present invention provides a catalyst system for the polymerization and copolymerization of olefins with the system comprising a chiral, stereorigid hafnium metallocene catalyst in combination with an aluminum compound. The ...


4
John A Ewen: Hafnium metallocene catalyst for the polymerization of olefins. Cosden Technology, ZHANG QIXIA, October 19, 1988: CN87106984

The present invention provides a catalyst system for the polymerization and copolymerization of olefins with the system comprising a chiral, stereorigid hafnium metallocene catalyst in combination with an aluminum compound. The aluminum compound is preferably an alumoxane and may be a mixture of alu ...