Ajou University Industry-academic Cooperation Foundation

Lg Chem, Ltd

S-precious Catalysts Inc.

Sung Dong Kim

Bun Yeoul Lee

Tae Hee Kim

Su Jin Gwon

Hyun Mo Lee

Jun Won Baek

Chung Sol Kim

Seung Soo Park

Hee Soo Park

The present invention relates to a method for preparing a polyolefin block copolymer, the method comprising: a first step of coordination polymerization of an olefin monomer with a transition metal catalyst in the presence of organozinc; and a second step of continuously adding a diacyl peroxide compound to perform polymerization, and to a polyolefin block copolymer prepared therefrom.

Symmetrical polyolefin block copolymer and preparation method therefor

The present invention relates to a polyolefin-polystyrene multi-block copolymer having a structure comprising a polyolefin block and polystyrene blocks bonded to both ends of the polyolefin block, to an organozinc compound for preparing the same, and a method for preparing the polyolefin-polystyrene multi-block copolymer.

Polyolefin-polystyrene multi-block copolymer, organozinc compound for preparing same, and method for preparing polyolefin-polystyrene multi-block copolymer

The present invention relates to a bisphosphine ligand compound, a chromium compound prepared using same, an ethylene oligomerization catalyst system containing the chromium compound, and an ethylene oligomer preparing method, wherein the bisphosphine ligand compound is suitable for mass production and commercial processes, allows extremely high activity to be compatible with excellent economical benefit, and increases selectivity for ethylene oligomerization reaction, thereby being able to be used to manufacture 1-hexene and/or 1-octene at high yield.

Bisphosphine ligand compound, chromium compound, ethylene oligomerization catalyst system, and ethylene oligomer preparation method

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Seoul, South Korea

Sung Dong Kim