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    • 10. 发明授权
    • 유기용제의 정제방법
    • 净化有机溶剂的方法
    • KR101274477B1
    • 2013-06-17
    • KR1020120116440
    • 2012-10-19
    • 재원산업 주식회사
    • 심성원
    • C07C67/48C07C69/708G03F7/004
    • C07C67/48C07C69/708G03F7/004G03F7/0045G03F7/0047G03F7/20G03F7/202
    • PURPOSE: A purifying method of an organic solvent is provided to change the boiling point of impurities which have a similar boiling point with acetate, thereby purifying propylene glycol monomethyl ether acetate with high purity and high yield. CONSTITUTION: A purifying method of an organic solvent comprises an organic solvent mixture which includes propylene glycol monomethyl ether acetate and cyclohexanone; and a step of adding dialkyl ketal compound to the organic solvent mixture and removing the cyclohexanone. The dialkyl ketal compound is represented by chemical formula 1. In chemical formula 1, each of R1, R2, R3, and R4 is independently C1-12 alkyl group or C6-12 aryl group.
    • 目的:提供一种有机溶剂的净化方法,用乙酸酯改变沸点相近的杂质,从而纯化高纯度的丙二醇单甲醚乙酸酯。 构成:有机溶剂的净化方法包括有机溶剂混合物,其包括丙二醇单甲醚乙酸酯和环己酮; 以及将二烷基缩酮化合物加入有机溶剂混合物中并除去环己酮的步骤。 二烷基缩酮化合物由化学式1表示。在化学式1中,R 1,R 2,R 3和R 4各自独立地为C 1-12烷基或C 6-12芳基。