Title:
METHOD FOR RECOVERING IONIC LIQUID
Document Type and Number:
WIPO Patent Application WO/2023/175787
Kind Code:
A1
Abstract:
Provided is a method for simply and efficiently recovering an ionic liquid from a liquid mixture including the ionic liquid and an organic acid. This method for recovering an ionic liquid from a liquid mixture including the ionic liquid and an organic acid is characterized in that a solvent (excluding organic acids) is mixed into the liquid mixture and distillation is performed. The solvent is preferably a polar solvent. The HSP value (MPA)0.5 at 25°C of the polar solvent is preferably 15 or higher.
Inventors:
WADA NAOKI (JP)
TAKAHASHI KENJI (JP)
OKUBO YUTO (JP)
WATANABE SUSUMU (JP)
WATANABE HITOSHI (JP)
ARAI TAKASHI (JP)
TAKAHASHI KENJI (JP)
OKUBO YUTO (JP)
WATANABE SUSUMU (JP)
WATANABE HITOSHI (JP)
ARAI TAKASHI (JP)
Application Number:
PCT/JP2022/011991
Publication Date:
September 21, 2023
Filing Date:
March 16, 2022
Export Citation:
Assignee:
UNIV NAT CORP KANAZAWA (JP)
DAICEL CORP (JP)
DAICEL CORP (JP)
International Classes:
C08B3/06; C07D233/58; C08B3/22
Foreign References:
| JP2011530643A | 2011-12-22 |
Other References:
JOGUNOLA OLATUNDE; ETA VALERIE; HEDENSTRöM MATTIAS; SUNDMAN OLA; SALMI TAPIO; MIKKOLA JYRI-PEKKA: "Ionic liquid mediated technology for synthesis of cellulose acetates using different co-solvents", CARBOHYDRATE POLYMERS, APPLIED SCIENCE PUBLISHERS , LTD BARKING, GB, vol. 135, 2 September 2015 (2015-09-02), GB , pages 341 - 348, XP029291415, ISSN: 0144-8617, DOI: 10.1016/j.carbpol.2015.08.092
SHI JIN-ZHI, STEIN JÜRGEN, KABASCI STEPHAN, PANG HAO: "Purification of EMIMOAc Used in the Acetylation of Lignocellulose", JOURNAL OF CHEMICAL AND ENGINEERING DATA., AMERICAN CHEMICAL SOCIETY., US, vol. 58, no. 2, 14 February 2013 (2013-02-14), US , pages 197 - 202, XP093092607, ISSN: 0021-9568, DOI: 10.1021/je300330t
SHI JIN-ZHI, STEIN JÜRGEN, KABASCI STEPHAN, PANG HAO: "Purification of EMIMOAc Used in the Acetylation of Lignocellulose", JOURNAL OF CHEMICAL AND ENGINEERING DATA., AMERICAN CHEMICAL SOCIETY., US, vol. 58, no. 2, 14 February 2013 (2013-02-14), US , pages 197 - 202, XP093092607, ISSN: 0021-9568, DOI: 10.1021/je300330t
Attorney, Agent or Firm:
G-CHEMICAL INTELLECTUAL PROPERTY FIRM (JP)
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