公开(公告)号：US11965051B2

公开(公告)日：2024-04-23

申请号：US16977943

申请日：2018-12-21

Applicant: AJOU UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION

Inventor： Bun Yeoul Lee ,  Sung Dong Kim ,  Su Jin Gwon ,  Tae Hee Kim

IPC: C08F297/08 ,  C08F2/06 ,  C08F2/38 ,  C08F4/34 ,  C08F4/50 ,  C08F4/619 ,  C08F4/659 ,  C08F110/06 ,  C08F210/16

CPC classification number: C08F297/086 ,  C08F2/06 ,  C08F2/38 ,  C08F4/34 ,  C08F4/50 ,  C08F110/06 ,  C08F210/16 ,  C08F2410/01

Abstract: 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.

公开(公告)号：US11148127B2

公开(公告)日：2021-10-19

申请号：US16972117

申请日：2019-06-03

Applicant: AJOU UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION ,  S-PRECIOUS CATALYSTS INC.

Inventor： Bun Yeoul Lee ,  Tae Hee Kim ,  Hee Soo Park ,  Jun Won Baek ,  Su Jin Gwon ,  Sung Dong Kim

IPC: B01J31/24 ,  B01J31/14 ,  C07C2/36 ,  C07F11/00

Abstract: 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.

公开(公告)号：US11052384B2

公开(公告)日：2021-07-06

申请号：US16346735

申请日：2016-12-12

Applicant: AJOU UNIVERSITY INDUSTRY—ACADEMIC COOPERATION FOUNDATION ,  S-PRECIOUS CATALYSTS INC.

Inventor： Bun Yeoul Lee ,  Eun Ho Kim ,  Hyun Mo Lee

IPC: C08F4/06 ,  B01J31/14 ,  C07F11/00 ,  B01J31/18 ,  C07C2/32 ,  B01J31/16 ,  C07F19/00 ,  C07C2/30 ,  C07C11/04

Abstract: The present invention relates to a chrome compound composed of non-coordinating anions and a trivalent chrome cation, a reactant of the chrome compound and a bidentate ligand, an ethylene oligomerization reaction catalyst system using the chrome compound and the reactant, and a method for preparing an ethylene oligomer using the catalyst system. Through the above conformation, the present invention can selectively produce 1-hexene and 1-octene with high activity while omitting the use of methylaluminoxane (MAO), and can provide an ethylene oligomerization process more suitable for mass production.

公开(公告)号：US10442741B2

公开(公告)日：2019-10-15

申请号：US15123878

申请日：2015-03-04

Applicant: AJOU UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION

Inventor： Bun Yeoul Lee ,  Jong Yeob Jeon ,  Dong Sik Park

IPC: C07C2/32 ,  B01J31/12 ,  C07F11/00 ,  B01J31/14 ,  B01J31/22 ,  B01J31/18

Abstract: Disclosed herein are a chromium compound represented by Formula 1a or 1b and a catalyst system including the same, exhibiting superior catalytic activity in an olefin trimerization reaction: [{CH3(CH2)3CH(CH2CH3)CO2}2Cr(OH)]  [Formula 1a] [{CH3CH2CH(CH2CH3)CO2}2Cr(OH)].  [Formula 1b]