Han Ki Won

Bio: Han Ki Won is an academic researcher from LG Chem. The author has contributed to research in topics: Polymerization & Olefin fiber. The author has an hindex of 2, co-authored 12 publications receiving 18 citations.

Novel ligand compound and transition metal compound comprising the same

Abstract: The present invention relates to a novel ligand compound and a transition metal compound including the same. The novel ligand compound and the transition metal compound including the same according to one embodiment of the present invention can be used as a polymerization catalyst for producing an olefin-based polymer. The ligand compound of the present invention is represented by chemical formula 1. In chemical formula 1, n is an integer of 1 to 2, R1 to R10 can form a ring, R11 is hydrogen, a halogen group, an alkyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, or an aryl group having 6 to 20 carbon atoms, and Q is carbon or silicon.

Method of preparing novel ligand compound and transition metal compound

Abstract: The present invention relates to a novel ligand compound and a producing method of a transition metal compound. In the producing method according to one embodiment of the present invention, the novel ligand compound and the transition metal compound can be obtained by a simple method and high efficiency. In addition, the novel ligand compound and the transition metal compound obtained by the method of the present invention can be helpfully used as a catalyst of polymerization reaction in production of an olefin-based polymer.

Catalyst composition and method for preparing olefin-based polymer thereby

Abstract: The present invention relates to an improved catalyst composition having high activity as a polymerization catalyst during olefin polymerization, and a method for preparing olefin-based polymer using the same. If the catalyst composition according to the present invention is used, not only an olefin-based polymer having high molecular weight and low density, for example a polymer such as a polypropylene polymer or a propylene-alpha olefin copolymer can be prepared, but also the polymer can be obtained in improved yield.

Olefin-based copolymer and process for preparing same

Abstract: The present invention relates to an olefin-based copolymer having novel crystalline properties and capable of providing a molded article with further improved strength and impact strength when compounded with other resins, and a method for preparing the same The olefin-based copolymer is an olefin-based copolymer comprising an ethylene repeating unit and an α-olefinic repeating unit The olefin-based copolymer comprises polymer fractions defined by three different peaks at a predetermined temperature when analyzed by cross-fractionation chromatography

Catalyst composition including novel transition metal compound

Abstract: The present invention relates to a catalyst composition including a transition metal compound represented by the following Formula 1; and one or more of a compound represented by the following Formula 2, a compound represented by the following Formula 3 and a compound represented by the following Formula 4. The catalyst composition according to the present invention has excellent copolymerization properties, and can be usefully used as a catalyst for a polymerization reaction for preparing an olefin-based polymer having a high molecular weight.

Method for preparing olefin-based polymer and olefin-based polymer prepared thereby

Abstract: The present invention relates to a method for preparing an olefin-based polymer, comprising a step of polymerizing an olefin-based monomer in the presence of a catalytic composition comprising cis-isomers and trans-isomers of a transition metal compound. According to the method for preparing the olefin-based polymer in accordance with one embodiment of the present invention, it is possible to obtain a similar level of density and molecular weight compared to a conventional polymer by using a relatively lower amount of octene, compared to the amount of octene used in conventional polymer preparation, and thus it is possible to prepare an olefin-based polymer which has a more excellent copolymerization property and is more stable.

Method of preparing novel ligand compound and transition metal compound

Abstract: The present invention relates to a novel ligand compound and a producing method of a transition metal compound. In the producing method according to one embodiment of the present invention, the novel ligand compound and the transition metal compound can be obtained by a simple method and high efficiency. In addition, the novel ligand compound and the transition metal compound obtained by the method of the present invention can be helpfully used as a catalyst of polymerization reaction in production of an olefin-based polymer.

Bridged metallocene compound containing heterocyclic structure, and preparation method and application thereof

Abstract: The invention discloses a bridged metallocene compound containing a heterocyclic structure, and a preparation method and application thereof. The bridged metallocene compound has a trans structural formula (I) or a cis structural formula (II) as described in the specification. In the formula (I) and the formula (II), M is Ti, Zr or Hf; A is S or O; Y is C or Si; R1 and R2 are C1-6 alkyl groups oraryl groups and are same or different; and X1 and X2 are independently ligands forming a sigma-bond with M. The bridged metallocene compound is coordinated with a cocatalyst and applicable to homopolymerization and copolymerization of alpha-olefins, especially to copolymerization of long-chain alpha-olefins, e.g., copolymerization of ethylene and octylene. According to the di-cyclopentadienyl bridged metallocene compound, heteroatom-containing ligands are conjugated with a transition metal, and the structures of an upper cyclopentadienyl heterocyclic ring and a lower cyclopentadienyl heterocyclic ring on the metal are not exactly same; and with such a special symmetric structure, the bridged metallocene compound is applicable to homopolymerization and copolymerization of alpha-olefins andallows the intercalation rate of long-chain alpha-olefins to be high.

Olefin-based copolymer and process for preparing same

Abstract: The present invention relates to an olefin-based copolymer having novel crystalline properties and capable of providing a molded article with further improved strength and impact strength when compounded with other resins, and a method for preparing the same The olefin-based copolymer is an olefin-based copolymer comprising an ethylene repeating unit and an α-olefinic repeating unit The olefin-based copolymer comprises polymer fractions defined by three different peaks at a predetermined temperature when analyzed by cross-fractionation chromatography

Propylene-diene copolymer resin having excellent melt tension

Abstract: Disclosed is a propylene-diene copolymer resin having excellent melt tension, with improved melt strength, high molecular weight and broad molecular weight distribution by using a specific metallocene catalyst system. The present invention provides a propylene-diene copolymer resin produced by polymerizing propylene and a diene compound of C4-C20 by using a metallocene catalyst system, wherein the propylene-diene copolymer resin has the melt index (2.16 kg load at 230° C.) of 0.1-100 g/10 min and the melt tension (advanced rheometric expansion system (ARES)) of 5-100 g.