Sk Energy Co., Ltd.

Sk Innovation Co., Ltd.

Sk Corporation

Sabic Sk Nexlene Company Pte. Ltd.

Jong-Sok Hahn

Myung-Ahn Ok

Ho-Seong Lee

Dong-cheol Shin

Sang-Ook Kang

Tae-jin Kim

Dae Ho Shin

Sung Kun Kim

Mal-Ou Lee

Sung-bo Ko

Tae-Woo Woo

Tae Eung Kim

The present invention relates to a transition metal complex useful as a transition metal catalyst in the preparation of an ethylene homopolymer or a copolymer of ethylene and an &#x3b1;-olefin, a catalyst composition comprising the same and a process of preparing an ethylene homopolymer or a copolymer of ethylene and an &#x3b1;-olefin using the same. More particularly, it relates to a transition metal complex having a cyclopentadiene derivative and at least one phenyl oxide ligand substituted at the 2-position of phenyl with, for example, a silyl group having a C-Chydrocarbon group or a C-Chydrocarbon group, around a group IV transition metal, with no crosslinkage between the ligands, a catalyst composition comprising the transition metal complex and a cocatalyst selected from the group consisting of an aluminoxane and a boron compound, and a process for preparing an ethylene homopolymer or a copolymer of ethylene and an &#x3b1;-olefin using the same.

Transition metal complexes, catalysts composition containing the same, and process for preparing ethylene homopolymers or copolymers of ethylene and alpha-olefins using the same

Disclosed are a transition metal complex having a high catalytic activity for the preparation of an ethylene homopolymer or a copolymer of ethylene and &#x3b1;-olefin and a catalyst composition comprising the same. More specifically, there are provided a transition metal complex having, around a group IV transition metal, a cyclopentadiene derivative and at least one aryl oxide ligand with a heterocyclic aryl derivative substituted at the ortho-position thereof, with no crosslinkage between the ligands, a catalyst composition comprising the transition metal complex and an organoaluminum compound or boron compound as cocatalyst, and a method for the preparation of high molecular weight ethylene homopolymers or copolymers of ethylene and &#x3b1;-olefin using the same.

Transition metal complexes, and catalysts compositions for preparing ethylene homopolymers or copolymers

The present invention relates to a bis-arylaryloxy catalyst system for the production of ethylene homopolymers or copolymers with &#x3b1;-olefins, which has high catalytic activity. More particularly, it relates to a transition metal catalyst comprising a group-IV transition metal as a central metal, a cyclopentadiene derivative around the central metal, and two aryloxide ligands substituted with aryl derivatives at the ortho-positions, the ligands not being bridged to each other, as well as a catalyst system comprising said catalyst and an aluminoxane co-catalyst or a boron compound co-catalyst, and a method for producing high-molecular-weight ethylene homopolymers or copolymers with &#x3b1;-olefins using the same.

Bis-arylaryloxy catalytic system for producing ethylene homopolymers or ethylene copolymers with alpha-olefins

The present invention relates to a transition metal complex and a transition metal catalyst composition comprising the same for the preparation of an ethylene homopolymer or a copolymer of ethylene and &#x3b1;-olefin. More particularly, it relates to a group IV transition metal catalyst having a cyclopentadiene derivative and at least one aryl oxide ligand in which an oxygen-containing heterocycle is fused at the ortho-position around a group IV transition metal, with no crosslinkage between the ligands, a catalyst composition comprising the transition metal catalyst and an aluminoxane cocatalyst or a boron compound cocatalyst, and a process for preparing an ethylene homopolymer or a copolymer of ethylene and &#x3b1;-olefin using the same.

Transition metal complexes, catalyst compositions containing the same, and methods for preparing ethylene homopolymers or copolymers of ethylene and &#x3b1;-olefins using the same

Disclosed is an arylphenoxy catalyst system for 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 4 arylphenoxy-based transition metal catalyst and an aluminoxane cocatalyst or a boron compound cocatalyst. In the transition metal catalyst, a cyclopentadienyl derivative and arylphenoxide as fixed ligands are located around the group 4 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 non-toxic raw materials, 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