METHOD OF PURIFYING 2,5-FURANDICARBOXYLIC ACID
PROBLEM TO BE SOLVED: To provide FDCA with reduce coloring and increased polymerization activity as a raw material monomer when producing polyesters.SOLUTION: A method of purifying FDCA comprises a heating step for heating 2,5-furandicarboxylic acid (FDCA) solution at 100°C or more and 200°C or less...
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| Format: | Patent |
| Sprache: | eng ; jpn |
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| Zusammenfassung: | PROBLEM TO BE SOLVED: To provide FDCA with reduce coloring and increased polymerization activity as a raw material monomer when producing polyesters.SOLUTION: A method of purifying FDCA comprises a heating step for heating 2,5-furandicarboxylic acid (FDCA) solution at 100°C or more and 200°C or less, and a recovery step for precipitating FDCA as a solid out of the FDCA solution heated in the heating step.SELECTED DRAWING: None
【課題】ポリエステル類を製造する際の原料モノマーとして、着色が少なく重合活性が高いＦＤＣＡを提供すること。【解決手段】２，５−フランジカルボン酸（以下、ＦＤＣＡという）溶液を、１００℃以上、２００℃以下の温度で加熱する加熱工程と、前記加熱工程で加熱したＦＤＣＡ溶液から、ＦＤＣＡを固体で析出させる回収工程、とを含むＦＤＣＡの精製方法。【選択図】 なし |
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