Sk Innovation Co., Ltd.

Sk Ie Technology Co., Ltd.

Sk Global Chemical Co., Ltd.

Sk Geo Centric Co., Ltd.

Min Seon Jung

Joo Hyun Lee

Hyo Shin Kwak

Sun Young Kim

Sang Ick Lee

Ho Seong Lee

Hyo Seung Park

Sung Seok Chae

Eun Jung Baek

Dong Chul Shin

Jong Sok Han

Tack Kyu Han

The present invention relates to a polyimide precursor, a polyimide precursor solution, a polyimide film, a manufacturing method thereof, and a use thereof. The polyimide precursor according to the present invention may provide a polyimide film that has excellent heat resistance and satisfies transparency and a low coefficient of linear thermal expansion, and thus the polyimide film will be usefully applicable in the field of flexible displays requiring high dimensional stability.

Polyimide precursor, polyimide precursor composition, polyimide film, manufacturing method thereof, and use thereof

The present invention relates to a diamine compound, a method of preparing the same, and a composition containing the same. The diamine compound of the present invention may be very usefully used as a monomer used to produce a polyimide film having excellent heat resistance and improved transparency and coefficient of thermal expansion.

Diamine compound, method of preparing the same, and composition containing the same

The present invention relates to an oligomerization catalyst including a transition metal or transition metal precursor, a halogen-substituted organic ligand, and a heteroatom ligand, and to a method for selectively preparing 1-hexene or 1-octene from ethylene using the catalyst.

Oligomerization catalyst and method for preparing ethylene oligomer using same

This invention relates to a catalyst system for selective oligomerization of ethylene, which includes (i) a chromium compound; (ii) a ligand having a P&#x2014;C&#x2014;C&#x2014;P backbone structure; and (iii) an activator, thus preparing 1-hexene and/or 1-octene with high activity and selectivity.

Catalyst systems for preparing 1-hexene and/or 1-octene from ethylene

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Daejeon, South Korea

Min Seon Jung