The present invention relates to a new transition metal compound based on cyclopenta[b]fluorenyl group, a transition metal catalyst composition containing the same and having high catalytic activity for preparing an ethylene homopolymer or a copolymer of ethylene and one -olefin, a method of preparing an ethylene homopolymer or a copolymer of ethylene and -olefin using the same, and the prepared ethylene homopolymer or the copolymer of ethylene and -olefin.

The present invention relates to a new transition metal compound based on cyclopenta[b]fluorenyl group, a transition metal catalyst composition containing the same and having high catalytic activity for preparing an ethylene homopolymer or a copolymer of ethylene and one -olefin, a method of preparing an ethylene homopolymer or a copolymer of ethylene and -olefin using the same, and the prepared ethylene homopolymer or the copolymer of ethylene and -olefin.

The present invention relates to a new transition metal compound based on cyclopenta[b]fluorenyl group, a transition metal catalyst composition containing the same and having high catalytic activity for preparing an ethylene homopolymer or a copolymer of ethylene and one -olefin, a method of preparing an ethylene homopolymer or a copolymer of ethylene and -olefin using the same, and the prepared ethylene homopolymer or the copolymer of ethylene and -olefin.

The present invention relates to a new transition metal compound based on cyclopenta[b]fluorenyl group, a transition metal catalyst composition containing the same and having high catalytic activity for preparing an ethylene homopolymer or a copolymer of ethylene and one -olefin, a method of preparing an ethylene homopolymer or a copolymer of ethylene and -olefin using the same, and the prepared ethylene homopolymer or the copolymer of ethylene and -olefin.

The present invention relates to a new transition metal compound based on cyclopenta[b]fluorenyl group, a transition metal catalyst composition containing the same and having high catalytic activity for preparing an ethylene homopolymer or a copolymer of ethylene and one -olefin, a method of preparing an ethylene homopolymer or a copolymer of ethylene and -olefin using the same, and the prepared ethylene homopolymer or the copolymer of ethylene and -olefin.

The present invention discloses an active metallocene catalyst system prepared with a hafnium-based metallocene catalyst system and an activating agent comprising an aluminoxane and a sterically hindered Lewis base.