Method for producing anhydrous sugar alcohol
By using cyclic ethers with five to eight carbon atoms as solvents and adjusting the temperature to achieve phase separation of anhydro sugar alcohol, the problems of insufficient solubility and high energy consumption in existing technologies are solved, and efficient, low-energy production and purification effects are achieved.
JP7877902B2Active Publication Date: 2026-06-23MITSUBISHI CHEM CORP
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- MITSUBISHI CHEM CORP
- Filing Date
- 2022-07-14
- Publication Date
- 2026-06-23
Abstract
To provide a technique for efficiently producing anhydrosugar alcohol, a form of performing continuous reaction, and an efficient production method of anhydrosugar alcohol.SOLUTION: A production method of monoanhydrosugar alcohol and / or dianhydrosugar alcohol (these are referred to as "anhydrosugar alcohol" in the following) comprises a step of precipitating the anhydrosugar alcohol as solids from an organic solvent in which the anhydrosugar alcohol is homogeneously dissolved, or separating an organic solvent in which the anhydrosugar alcohol is homogeneously dissolved into two faces, namely, an anhydrosugar alcohol liquid phase and an organic solvent phase, thereby separating the organic solvent and the anhydrosugar alcohol to obtain the anhydrosugar alcohol (referred to as "a phase separation step" in the following), where a C5-8 ether is used as the organic solvent.SELECTED DRAWING: None
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