Title:
METHOD FOR PURIFYING 6FDA WITH HIGH PURITY
Document Type and Number:
WIPO Patent Application WO/2024/085488
Kind Code:
A1
Abstract:
The present invention relates to a method for purifying 6FDA with high purity. According to the present invention, the use of activated carbon and phosphoric acid together in the purification process makes it possible to remove heavy metal ion impurities contained in 6FDA in a single process while maintaining an excellent yield, thereby enabling the production of high-quality and high-purity 6FDA.
Inventors:
KIM BONG SUK (KR)
WOO BYUNG WON (KR)
JUNG JIN A (KR)
MANISH POKHREL (KR)
CHOI GA RAM (KR)
HONG DEOK GI (KR)
WOO BYUNG WON (KR)
JUNG JIN A (KR)
MANISH POKHREL (KR)
CHOI GA RAM (KR)
HONG DEOK GI (KR)
Application Number:
PCT/KR2023/014585
Publication Date:
April 25, 2024
Filing Date:
September 25, 2023
Export Citation:
Assignee:
FOOSUNG CO LTD (KR)
International Classes:
C07D307/89; C07B63/04
Attorney, Agent or Firm:
E-SANG PATENT & TRADEMARK LAW FIRM (KR)
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