公开(公告)号：US20230150911A1

公开(公告)日：2023-05-18

申请号：US17640722

申请日：2021-08-20

Applicant: LG CHEM, LTD.

Inventor： Jae Hun JEONG ,  Sung Kyu LEE ,  Yeon Uk CHOO ,  Song Hoon LEE ,  Hyoung JUN ,  Yun Gon HEO

IPC: C07C67/08 ,  C07C67/54 ,  C07C69/82 ,  B01J19/24

CPC classification number: C07C67/08 ,  C07C67/54 ,  C07C69/82 ,  B01J19/245 ,  B01J19/2425 ,  B01J2219/0004 ,  B01J2219/00038 ,  B01J2219/00353 ,  B01J2219/00051 ,  B01J2219/00162 ,  B01J2219/00247 ,  B01J2219/00252 ,  B01J2204/00

Abstract: The present invention relates to a method of manufacturing a diester-based compound, and, more particularly, to a method of manufacturing a diester-based compound, which is performed using a continuous process including a reaction part in which a total of n reaction units spanning from a first reaction unit to an nth reaction unit are connected in series, wherein each of the reaction units includes a reactor, and the method includes: supplying a feed stream including a dicarboxylic acid and an alcohol into the first reactor; esterifying the feed stream to prepare a reaction product; and supplying a lower discharge stream including the reaction product into the reactor of the rear reaction unit. In this case, a conversion rate of the esterification reaction in the first reactor is controlled in a range of 50 to 80%.

公开(公告)号：US20220371984A1

公开(公告)日：2022-11-24

申请号：US17635925

申请日：2021-08-20

Applicant: LG CHEM, LTD.

Inventor： Jae Hun JEONG ,  Sung Kyu LEE ,  Yeon Uk CHOO ,  Song Hoon LEE ,  Hyoung JUN ,  Yun Gon HEO

IPC: C07C67/08 ,  C07C69/82 ,  C07C67/58

Abstract: A diester-based material can be prepared continuously including a reaction part in which a total of n reaction units from a first reaction unit to an nth reaction unit are connected in series, the reaction unit including a reactor which esterifies dicarboxylic acid and alcohol, includes: esterifying dicarboxylic acid and alcohol in a reactor of the first reaction unit to produce a reaction product, and supplying a lower discharge stream including the reaction product to a reaction unit at a rear end, wherein an operating pressure of the reactor of the first reaction unit is 0.4 kg/cm2G to 5.5 kg/cm2G, an operating pressure is reduced from a reactor of any one reaction unit of reaction units from a second reaction unit to the nth reaction unit, and an operating temperature is increased from the reactor of the first reaction unit to the reactor of the nth reaction unit.

公开(公告)号：US20230150910A1

公开(公告)日：2023-05-18

申请号：US17640652

申请日：2021-08-20

Applicant: LG CHEM, LTD.

Inventor： Jae Hun JEONG ,  Sung Kyu LEE ,  Yeon Uk CHOO ,  Song Hoon LEE ,  Hyoung JUN ,  Yun Gon HEO

IPC: C07C67/08 ,  C07C67/54 ,  C07C69/82 ,  B01J19/24

CPC classification number: C07C67/08 ,  C07C67/54 ,  C07C69/82 ,  B01J19/245 ,  B01J2219/0004 ,  B01J2219/00353 ,  B01J2219/00051 ,  B01J2219/00162 ,  B01J2219/00247 ,  B01J2219/00252 ,  B01J2204/00

Abstract: Provided is a method of preparing a diester-based material, more particularly, a method of preparing a diester-based material, which is carried out by a continuous preparation process of a diester-based material including a reaction part in which a total of n reaction units from a first reaction unit to an nth reaction unit are connected in series, the reaction unit including a reactor which esterifies dicarboxylic acid and alcohol, including: esterifying dicarboxylic acid and alcohol in a reactor of the first reaction unit to produce a reaction product, and supplying a lower discharge stream including the reaction product to a reaction unit at a rear end through a lower discharge line; and supplying a liquid material through a liquid supply line connected to a lower discharge line of the reactor of the first reaction unit.