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:
Oct. 14, 2025
Filed:
Aug. 30, 2023
Applicant:
SK Chemicals Co., Ltd., Gyeonggi-do, KR;
Inventors:
Yu-Mi Chang, Gyeonggi-do, KR;
Ju-Sik Kang, Gyeonggi-do, KR;
Jeong Ho Park, Gyeonggi-do, KR;
Hee-Il Chae, Gyeonggi-do, KR;
Assignee:
SK CHEMICALS CO., LTD., Gyeonggi-do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 51/09 (2006.01); C07C 63/26 (2006.01); C08G 63/183 (2006.01);
U.S. Cl.
CPC ...
C07C 51/09 (2013.01); C07C 63/26 (2013.01); C08G 63/183 (2013.01);
Abstract
The present invention relates to a method for preparing terephthalic acid, and terephthalic acid prepared therefrom. Specifically, according to one embodiment of the present invention, by including the step of hydrolyzing a compound prepared by depolymerizing a waste polyester using a specific hydrolysis catalyst, terephthalic acid can be prepared in an environmentally friendly manner, and high purity terephthalic acid can be provided.