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Title:
METHOD FOR PRODUCING DIISOCYANATE
Document Type and Number:
WIPO Patent Application WO/2023/101340
Kind Code:
A1
Abstract:
The present invention relates to a method for producing diisocyanate that has high purity and excellent stability even during long-term storage and thus has low haze. The stability of the diisocyanate can be improved by maintaining the temperature of the refining stage at an appropriate level and controlling the total residence time of the refining stage.

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Inventors:
PARK JONGSEONG (KR)
SIM YUJIN (KR)
PARK JUYOUNG (KR)
WOO EUN JI (KR)
Application Number:
PCT/KR2022/018934
Publication Date:
June 08, 2023
Filing Date:
November 28, 2022
Export Citation:
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Assignee:
HANWHA SOLUTIONS CORP (KR)
International Classes:
C07C263/10; C07C263/20; C07C265/14
Foreign References:
KR102217747B12021-02-19
JPH05163231A1993-06-29
KR20190139153A2019-12-17
KR20210071802A2021-06-16
KR20050089053A2005-09-07
Attorney, Agent or Firm:
YOU ME PATENT AND LAW FIRM (KR)
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