Sk Innovation Co., Ltd.

Sk Energy Co., Ltd.

Sabic Sk Nexlene Company Pte. Ltd.

Seung Bum Kwon

Sung Seok Chae

Dae Ho Shin

Choon Sik Shim

Hyeong Taek Ham

Myung Ahn Ok

Jong Sok Hahn

Hyun Wook Jung

Se Won Oh

Provided is an ethylene copolymer having improved hygienic property. More particularly, the ethylene copolymer satisfies a correlation between a density thereof and an extract content. The ethylene copolymer having improved hygienic property can be applied in injection molding, rotation molding, or blow molding.

Ethylene copolymer with improved hygienic property and process for preparing 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

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

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Daejeon, South Korea

Seung Bum Kwon