US 11,939,278 B2
Method of producing oligomer
Kyung Seog Youk, Daejeon (KR); Min Ho Sun, Daejeon (KR); Jong Hun Song, Daejeon (KR); Hong Min Lee, Daejeon (KR); Moon Sub Hwang, Daejeon (KR); and Jeong Seok Lee, Daejeon (KR)
Assigned to LG Chem, Ltd., Seoul (KR)
Appl. No. 17/777,962
Filed by LG CHEM, LTD., Seoul (KR)
PCT Filed Sep. 6, 2021, PCT No. PCT/KR2021/012030
§ 371(c)(1), (2) Date May 18, 2022,
PCT Pub. No. WO2022/050788, PCT Pub. Date Mar. 10, 2022.
Claims priority of application No. 10-2020-0113695 (KR), filed on Sep. 7, 2020; and application No. 10-2021-0114794 (KR), filed on Aug. 30, 2021.
Prior Publication US 2023/0183148 A1, Jun. 15, 2023
Int. Cl. C07C 2/06 (2006.01); C07C 7/00 (2006.01); C07C 7/08 (2006.01); C07C 7/148 (2006.01)
CPC C07C 2/06 (2013.01) [C07C 7/005 (2013.01); C07C 7/08 (2013.01); C07C 7/14883 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method of producing an oligomer, the method comprising:
supplying a monomer stream including a monomer and a solvent stream to a reactor to perform an oligomerization reaction using the monomer to produce a reaction product including an oligomer and a by-product, wherein the by-product comprises a polymer;
supplying a discharge stream of the reactor to a separation device, and supplying an upper discharge stream of the separation device including an unreacted monomer to the reactor and supplying a lower discharge stream of the separation device to a settling tank;
settling the polymer in the settling tank and removing the polymer, and supplying the lower discharge stream of the separation device from which the polymer is removed to a high-boiling point separation column;
removing a high-boiling point material from a lower discharge stream of the high-boiling point separation column and supplying an upper discharge stream of the high-boiling point separation column including the oligomer to a solvent separation column; and
separating a solvent and the oligomer in the solvent separation column,
wherein layer separation into an upper layer liquid including the solvent and a lower layer liquid including the oligomer is performed in the settling tank, and an upper layer liquid stream is directly supplied to the solvent separation column and a lower layer liquid stream is supplied to the high-boiling point separation column.