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    • 36. 发明公开
    • 1,1,1,2-테트라플루오로에탄 및/또는 펜타플루오로에탄의제조방법 및 그 용도
    • 生产1,1,1,2-四氢呋喃和/或二氟甲磺酸的方法及其应用
    • KR1020070002001A
    • 2007-01-04
    • KR1020067018420
    • 2005-03-28
    • 쇼와 덴코 가부시키가이샤
    • 오노히로모토오히토시오
    • C07C17/20C07C17/383C07C17/386
    • A process for producing high purity 1,1,1,2-tetrafluoroethane and/or pentafluoroethane by the step of purifying a crude product obtained by reacting trichloroethylene and/or tetrachloroethylene with hydrogen fluoride comprised of a main product including 1,1,1,2-tetrafluoroethane and/or pentafluoroethane, hydrogen fluoride as an azeotropic component with the main product, and impurity ingredients including at least an unsaturated compound, wherein said purifying step includes a step of bringing a mixture obtained by newly adding hydrogen fluoride into said crude product into contact with a fluorination catalyst in the vapor phase to reducing the content of the unsaturated compound contained in said crude product and a distillation step. ® KIPO & WIPO 2007
    • 通过以下步骤制备高纯度1,1,1,2-四氟乙烷和/或五氟乙烷的方法:通过使三氯乙烯和/或四氯乙烯与由主要产物组成的氟化氢反应得到的粗产物, 2-四氟乙烷和/或五氟乙烷,作为与主要产物的共沸组分的氟化氢,以及包含至少不饱和化合物的杂质成分,其中所述纯化步骤包括将通过新添加氟化氢获得的混合物加入到所述粗产物 与气相中的氟化催化剂接触以降低所述粗产物中所含的不饱和化合物的含量和蒸馏步骤。 ®KIPO&WIPO 2007