Sk Innovation Co., Ltd.

Sk Global Chemical Co., Ltd.

Sk Energy Co., Ltd.

Sabic Sk Nexlene Company Pte. Ltd.

Jong Sok Hahn

Ho Seong Lee

Dong Cheol Shin

Myung Ahn Ok

Jeong Hwan Kim

Sun Young Kim

Sang Ick Lee

Seong Kyun Kim

Chan Woong Jeon

Sang Ook Kang

Tae Jin Kim

SAng Hyeon Kang

Sung Seok Chae

Dae Ho Shin

Choon Sik Shim

Hyeong Taek Ham

Tae Woo Woo

Sung Bo Ko

Seung Bum Kwon

Mal Ou Lee

Tae-Jin Kim

Jae Ho Jung

Sung-Kwan Kim

Young Wook Kim

Byoung Tak Yim

Kyu Cheol Cho

Sung Kwan Kim

Mal-Ou Lee

Sung-bo Ko

Hwan Kyu Jung

Seung Yeol Han

Hyo Sun Lee

Chun Ji Wu

Seoung Woong Ryu

Mal Woo Lee

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 &#x3b1;-olefin, a method of preparing an ethylene homopolymer or a copolymer of ethylene and &#x3b1;-olefin using the same, and the prepared ethylene homopolymer or the copolymer of ethylene and &#x3b1;-olefin.

Cyclopenta[b]fluorenyl transition metal compound, catalyst composition containing the same, and method of preparing ethylene homopolymer or copolymer of ethylene and alpha-olefin using the same

Provided are a hybrid supported metallocene catalyst, a method for preparing the same, and a process for preparing an olefin polymer using the same, and more particular, a hybrid supported metallocene catalyst characterized in that two kinds of metallocene compounds containing a new cyclopenta[b]fluorenyl transition metal compound are supported on an inorganic or organic porous carrier surface-treated with an ionic compound and a co-catalyst, a method for preparing the same, and a process for preparing an olefin polymer using the hybrid supported metallocene catalyst.

Hybrid supported metallocene catalyst, method for preparing the same, and process for preparing polyolefin using the same

Cyclopenta[b]fluorenyl transition metal compound, catalyst composition containing the same, and method of preparing ethylene homopolymer or copolymer of ethylene and &#x3b1;-olefin using the same

The present invention relates to a method of preparing an ethylene-&#x3b1;-olefin-diene copolymer and an ethylene-&#x3b1;-olefin-diene copolymer prepared thereby, by using a transition metal compound based on a cyclopenta[b]fluorenyl group as a catalyst.

Method of preparing ethylene-&#x3b1;-olefin-diene copolymer

Disclosed herein is a group IV transition metal catalyst for producing an ethylene homopolymer or an ethylene-olefin copolymers, having high catalytic activity, which includes a cyclopentadiene derivative and one or more anionic ligands having an aryl group substituted with an aryl derivative at an ortho-position thereof around a transition metal, the ligands not being crosslinked to each other, a catalyst system including the group IV transition metal catalyst and an aluminoxane cocatalyst or a boron compound cocatalyst, and a method of producing ethylene homopolymers or ethylene-olefin copolymers using the catalyst system.

Transition metal catalytic systems and methods for preparing ethylene homopolymers or copolymers of ethylene and olefins using the same

Disclosed are an ethylene polymerization process, a catalyst for use in the process, a production method employing the catalyst, and a product produced thereby. More specifically, disclosed is a process of producing an ethylene copolymer from ethylene and an alpha-olefin comonomer, in which the produced ethylene copolymer has a multimodal molecular weight distribution and excellent processability and physical properties, and thus can increase the value and productivity of products, including pipes and films. Particularly, the produced ethylene copolymer has a trimodal or higher molecular weight distribution or density distribution, and thus, when it is a linear low-density copolymer, it has an excellent effect of improving the impact strength of films, and when it is a medium-density ethylene copolymer, it can be produced into pipes, which have slow crack growth rate and can be used even at high temperature.

Ethylene copolymer having multiple pitch in molecular weight distribution and the method of preparing the same

There is provided a method for producing copolymer that is composed of ethylene and alpha-olefin by a solution polymerization, and more specifically, a method for producing copolymer that is composed of ethylene and aromatic monomer as main components by using a transition metal catalyst including a cyclopentadiene derivative, and one or more anionic ligand having aryloxy group in which an aryl derivative is substituted at an ortho-position

Ethylene alpha olefin polymer formed by use of metallocene catalyst

Ethylene copolymer having multiple pitch molecular weight distribution and the method of preparing the same

Disclosed is a homogeneous catalyst system for producing an ethylene homopolymer or an ethylene copolymer with &#x3b1;-olefin. Specifically, this invention pertains to a transition metal catalyst which has stability under high temperature solution polymerization at 120&#x2dc;250&#xb0; C., in which a cyclopentadiene derivative and an electron donating substituent, both of which are bonded to a Group IV transition metal acting as a central metal, are crosslinked through a silyl derivative substituted with a cyclohexyl, to a catalyst system including such a transition metal catalyst and an aluminoxane cocatalyst or a boron compound cocatalyst, and to a method of producing an ethylene homopolymer or an ethylene copolymer with &#x3b1;-olefin, having high molecular weight, using the catalyst system under conditions of high-temperature solution polymerization. The catalyst according to this invention has excellent thermal stability and compatibility with a paraffin hydrocarbon solvent and thus is effective in the production of an ethylene homopolymer or an ethylene copolymer with &#x3b1;-olefin having various properties in commercial polymerization processes.

Homogeneous catalyst system for producing ethylene homopolymer or ethylene copolymers with alpha-olefins

The present invention relates to an arylphenoxy catalyst system producing an ethylene homopolymer or copolymers of ethylene and &#x3b1;-olefins, and a method of producing an ethylene homopolymer or copolymers of ethylene and &#x3b1;-olefins having a high molecular weight under a high temperature solution polymerization condition using the same. The catalyst system includes a group IV arylphenoxy-based transition metal catalyst and an aluminoxane cocatalyst or a boron compound cocatalyst. In the transition metal catalyst, a cyclopentadiene derivative and arylphenoxide as fixed ligands are located around the group IV transition metal, arylphenoxide is substituted with at least one aryl derivative and is located at the ortho position thereof, and the ligands are not crosslinked to each other. The catalyst includes an environmentally-friendly raw material, synthesis of the catalyst is economical, and thermal stability of the catalyst is excellent. It is useful for producing an ethylene homopolymer or copolymers of ethylene and &#x3b1;-olefins having various physical properties in commercial polymerization processes.

Arylphenoxy catalyst system for producing ethylene homopolymer or copolymers of ethylene and &#x3b1;-olefins

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Daejeon, South Korea

Jong Sok Hahn