Title:
METHOD FOR PRODUCING TEREPHTHALIC ACID AND TEREPHTHALIC ACID PRODUCED THEREFROM
Document Type and Number:
WIPO Patent Application WO/2024/053927
Kind Code:
A1
Abstract:
The present invention pertains to a method for producing terephthalic acid in an eco-friendly manner using waste polyester. Specifically, according to an embodiment of the present invention, the method for producing terephthalic acid comprises the steps of: (1) subjecting waste polyester to alcoholysis using a C4 or higher alcohol to produce a liquid composition containing a compound represented by formula 1; and (2) subjecting the liquid composition to hydrolysis, and thus can produce terephthalic acid in an eco-friendly manner, as well as improve processability and reduce process costs.
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/KR2023/012903
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 | |||
| KR20200046198A | 2020-05-07 | |||
| CN104722248A | 2015-06-24 | |||
| JPH06240046A | 1994-08-30 | |||
| JPH06157402A | 1994-06-03 | |||
| US5095145A | 1992-03-10 | |||
| JPH0717901A | 1995-01-20 |
Attorney, Agent or Firm:
FIRSTLAW P.C. (KR)
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