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    • 26. 发明申请
    • PROCESS FOR THE PREPARATION OF FLUORINATED COMPOUNDS
    • 制备氟化合物的方法
    • US20110190554A1
    • 2011-08-04
    • US12602707
    • 2009-08-19
    • Anne PigamoMichel DevicLaurent Wendlinger
    • Anne PigamoMichel DevicLaurent Wendlinger
    • C07C17/23
    • C07C17/25C07C17/354C07C21/18Y02P20/582C07C19/08
    • A subject-matter of the invention is a process for the preparation of 2,3,3,3-tetrafluoro-1-propene which comprises the following stages: (i) hydrogenation of hexafluoropropylene to give 1,1,1,2,3,3-hexafluoropropane; (ii) dehydrofluorination of the 1,1,1,2,3,3-hexafluoropropane obtained in the preceding stage to give 1,2,3,3,3-pentafluoro-1-propene; (iii) hydrogenation of the 1,2,3,3,3-pentafluoro-1-propene obtained in the preceding stage to give 1,1,1,2,3-pentafluoropropane; and (iv) dehydrofluorination of the 1,1,1,2,3-pentafluoropropane obtained in the preceding stage to give 2,3,3,3-tetrafluoro-1-propene. Stages (ii) and (iv) are carried out using a water and potassium hydroxide mixture with the potassium hydroxide representing between 58 and 86% by weight of the mixture and at a temperature of between 110 and 180° C.
    • 本发明的主题是制备2,3,3,3-四氟-1-丙烯的方法,其包括以下步骤:(i)六氟丙烯的氢化,得到1,1,1,2,3 ,3-六氟丙烷; (ii)前段得到的1,1,1,2,3,3-六氟丙烷的脱氟化氢,得到1,2,3,3,3-五氟-1-丙烯; (iii)在前一阶段获得的1,2,3,3,3-五氟-1-丙烯的氢化,得到1,1,1,2,3-五氟丙烷; 和(iv)前一阶段获得的1,1,1,2,3-五氟丙烷的脱氟化氢,得到2,3,3,3-四氟-1-丙烯。 阶段(ii)和(iv)使用氢氧化钾与氢氧化钾混合物的比例为混合物的58-86%(重量)和在110和180℃之间的温度下进行。
    • 29. 发明授权
    • Process for the preparation of fluorinated compounds
    • 氟化合物的制备方法
    • US09255047B2
    • 2016-02-09
    • US12602707
    • 2009-08-19
    • Anne PigamoMichel DevicLaurent Wendlinger
    • Anne PigamoMichel DevicLaurent Wendlinger
    • C07C17/354C07C17/25C07C21/18
    • C07C17/25C07C17/354C07C21/18Y02P20/582C07C19/08
    • A subject-matter of the invention is a process for the preparation of 2,3,3,3-tetrafluoro-1-propene which comprises the following stages: (i) hydrogenation of hexafluoropropylene to give 1,1,1,2,3,3-hexafluoropropane; (ii) dehydrofluorination of the 1,1,1,2,3,3-hexafluoropropane obtained in the preceding stage to give 1,2,3,3,3-pentafluoro-1-propene; (iii) hydrogenation of the 1,2,3,3,3-pentafluoro-1-propene obtained in the preceding stage to give 1,1,1,2,3-pentafluoropropane; and (iv) dehydrofluorination of the 1,1,1,2,3-pentafluoropropane obtained in the preceding stage to give 2,3,3,3-tetrafluoro-1-propene. Stages (ii) and (iv) are carried out using a water and potassium hydroxide mixture with the potassium hydroxide representing between 58 and 86% by weight of the mixture and at a temperature of between 110 and 180° C.
    • 本发明的主题是制备2,3,3,3-四氟-1-丙烯的方法,其包括以下步骤:(i)六氟丙烯的氢化,得到1,1,1,2,3 ,3-六氟丙烷; (ii)前段得到的1,1,1,2,3,3-六氟丙烷的脱氟化氢,得到1,2,3,3,3-五氟-1-丙烯; (iii)在前一阶段获得的1,2,3,3,3-五氟-1-丙烯的氢化,得到1,1,1,2,3-五氟丙烷; 和(iv)前一阶段获得的1,1,1,2,3-五氟丙烷的脱氟化氢,得到2,3,3,3-四氟-1-丙烯。 阶段(ii)和(iv)使用氢氧化钾与氢氧化钾混合物进行,其中氢氧化钾占混合物重量的58-86%,在110-180℃的温度下进行。