Title:
METHOD FOR PREPARING TEREPHTHALIC ACID, AND TEREPHTHALIC ACID PREPARED THEREFROM
Document Type and Number:
WIPO Patent Application WO/2024/053928
Kind Code:
A1
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.
Inventors:
CHANG YU-MI (KR)
KANG JU-SIK (KR)
PARK JEONG HO (KR)
CHAE HEE-IL (KR)
KANG JU-SIK (KR)
PARK JEONG HO (KR)
CHAE HEE-IL (KR)
Application Number:
PCT/KR2023/012907
Publication Date:
March 14, 2024
Filing Date:
August 30, 2023
Export Citation:
Assignee:
SK CHEMICALS CO LTD (KR)
International Classes:
C07C51/09; C07C63/26; C07C67/03; C07C67/56; C07C67/60; C07C69/82; C08G63/183; C08J11/10
Foreign References:
| JP2006083125A | 2006-03-30 | |||
| JPH06157402A | 1994-06-03 | |||
| KR20200046198A | 2020-05-07 | |||
| JPH06240046A | 1994-08-30 | |||
| US5095145A | 1992-03-10 |
Attorney, Agent or Firm:
FIRSTLAW P.C. (KR)
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