Sk Innovation Co., Ltd.

Sk Energy Co., Ltd.

Sabic Sk Nexlene Company Pte. Ltd.

Seungbum Kwon

Myungahn Ok

Choonsik Shim

Daeho Shin

Sungseok Chae

Hyeongtaek Ham

Jisu Jeong

Dongcheol Shin

Hoseong Lee

Jongsok Hahn

Ho-Seong Lee

Dong-cheol Shin

Provided are ethylene copolymers with excellent impact resistance. More specifically, provided are ethylene copolymers satisfying certain correlation between the falling dart impact strength (F) or high rate impact resistant breakage energy (E) and Vicat softening point. The ethylene copolymers with improved impact properties are applicable to film, injection, compound, sheet, roto, pipe or blow molding.

Ethylene copolymer with improved impact resistance

Provided are ethylene copolymers and a process for preparing the same. More specifically, provided are ethylene copolymers exhibiting excellent processibility and physical properties due to its multimodal molecular weight distribution index, through a multi-stage process by using reactors connected in series or in parallel in the presence of catalyst composition containing transition metal catalyst, and a process for preparing the same.

Ethylene copolymer and a method of preparing the same

Provided is a process for preparing copolymers of ethylene with &#x3b1;-olefin. More specifically, provided are transition metal compound being useful as catalyst for preparing those copolymers, a catalyst composition comprising the same, and a process for preparing elastic copolymers of ethylene with &#x3b1;-olefin, having the density of not more than 0.910, which can be adopted to a wide variety of applications including film, electric wires, and hot-melt adhesives. The catalyst composition is a catalytic system which comprises transition metal catalyst comprising a cyclopentadiene derivative and at least one anionic ligand(s) of aryloxy group with an aryl derivative at ortho-position, and boron or aluminum compound as an activator. Provided is a process for copolymerizing ethylene with &#x3b1;-olefin to produce copolymer having narrow molecular weight distribution and uniform density distribution with the density of not more than 0.910, with high activity and excellent reactivity on higher &#x3b1;-olefin.

Method for preparing elastomeric copolymers of ethylene and &#x3b1;-olefins

Growing community of inventors

Daejeon, South Korea

Seungbum Kwon