The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 17, 2021
Filed:
Sep. 05, 2018
Lg Chem, Ltd., Seoul, KR;
Ha Na Lee, Daejeon, KR;
Sung Kyu Lee, Daejeon, KR;
Joon Ho Shin, Daejeon, KR;
Hyoung Jun, Daejeon, KR;
LG CHEM, LTD., Seoul, KR;
Abstract
Provided is a monohydric alcohol removal method in esterification, the method including a step of reacting a carbonyl-based compound having one or more functional groups selected from the group consisting of carboxyl, ester, and acid anhydride groups with a monohydric alcohol in an esterification reactor including a liquid phase outlet line connected to a liquid phase section in the reactor, and a step of separating in a gas-liquid separation column to remove the monohydric alcohol, wherein the inflow of a liquid phase stream into the gas-liquid separation column starts at the time point between 10% and 70% of the total time required for the gas-liquid separation.