Sk Innovation Co., Ltd.

Sk Global Chemical Co., Ltd.

Sk Corporation

Sk Energy Co., Ltd.

Sang-Ook Kang

Myung-Ahn Ok

Jong-Sok Hahn

Tae-jin Kim

Dae Ho Shin

Dong-cheol Shin

Ho-Seong Lee

Sung-Kwan Kim

Sung Kun Kim

Mal-Ou Lee

Sung-bo Ko

Tack-Kyu Han

Tae-Woo Woo

Tae Eung Kim

This invention relates to a chromium complex compound for selective ethylene oligomerization including a chiral ligand, and to a method of selectively preparing 1-hexene or 1-octene from ethylene using the same.

Highly active and selective ethylene oligomerization catalyst and method of preparing hexene or octene using the same

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

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

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

Growing community of inventors

Yongin-si, South Korea

Sang-Ook Kang