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:
Mar. 10, 2026
Filed:
Oct. 27, 2021
Lg Chem, Ltd., Seoul, KR;
Eunkyo Kim, Daejeon, KR;
Mi Kyung Kim, Daejeon, KR;
Joon Ho Shin, Daejeon, KR;
Hyebin Kim, Daejeon, KR;
LG CHEM, LTD., Seoul, KR;
Abstract
Provided is a process for producing acrylic acid, the process comprising: (step 1) preparing a first aqueous lactic acid solution by diluting a lactic acid raw material with water; (step 2) heat exchanging the first aqueous lactic acid solution to form a vaporized second lactic acid vapor and an unvaporized third aqueous lactic acid solution; (step 3) including the unvaporized third aqueous lactic acid solution in the aqueous solution of the step 1; and (step 4) supplying and absorbing an absorption liquid to the vaporized second lactic acid vapor to form an absorbed fourth aqueous lactic acid solution and an unabsorbed fifth lactic acid vapor, wherein the absorption liquid is water or an aqueous lactic acid solution.