Abstract: Provided are a hybrid metallocene catalyst comprising a first transition metal compound represented by Formula 1; and a second transition metal compound represented by Formula 2, which is useful in the preparation of a polyethylene exhibiting a high dart drop impact strength property along with excellent processability, and a method of preparing the polyethylene using the same: wherein Formulas 1 and 2 are described herein.

Abstract: Provided are a hybrid metallocene catalyst comprising a first transition metal compound represented by Formula 1; and a second transition metal compound represented by Formula 2, which is useful in the preparation of a polyethylene having excellent impact strength and haze properties, and a method of preparing the polyethylene using the same: wherein Formulas 1 and 2 are described herein.

Abstract: Disclosed is a hybrid supported metallocene catalyst exhibiting high activity in propylene polymerization and useful for preparing a polypropylene having high melt strength by introducing long chain branches into the polypropylene molecule, and to a method for preparing a polypropylene using the same.

Abstract: Disclosed is a transition metal compound that exhibits high activity and high comonomer incorporation in olefin polymerization and can be used for preparing a polyolefin having a BOCD structure, a method for preparing the same, and a catalyst composition including the same.

Abstract: Disclosed is a novel transition metal compound that exhibits excellent catalytic activity in polyethylene polymerization and is useful for preparing polyethylene having a high intramolecular short-chain branch content without deteriorating physical properties such as molecular weight, melting point, and density; a catalyst composition comprising the same; and a method for preparing polyethylene using the same.

Abstract: This invention relates to polyolefin. More specifically, this invention relates to polyolefin that may exhibit improved mechanical properties such as excellent drop impact strength.

Abstract: This invention relates to a novel metallocene compound, a catalyst composition comprising the metallocene compound, and a method for preparing olefin polymer using the catalyst composition.

Abstract: An organic light-emitting device including a first electrode; a second electrode; and an organic layer disposed between the first electrode and the second electrode, wherein the organic layer comprises an emission layer, wherein the emission layer includes at least one of a condensed cyclic compound represented by Formula 1, and wherein a ratio of an emission component of thermally activated delayed fluorescence (TADF) emitted from the condensed cyclic compound to a total emission component emitted from the emission layer is about 80% or more.