METHOD FOR PRODUCING FLUORINE-CONTAINING COMPOUNDS

    公开(公告)号:US20180155259A1

    公开(公告)日:2018-06-07

    申请号:US15576398

    申请日:2016-05-18

    发明人: Shun OHKUBO

    摘要: Provided is an efficient method for producing a fluorine-containing compound without the need for a rectification column involving numerous stages, extractive distillation, etc. The method for producing a fluorine-containing compound includes the step of supplying a composition containing a mixture to a dehydrohalogenation step, the mixture being at least one member selected from the group consisting of mixtures of at least one fluoroolefin and at least one hydrofluorocarbon, the boiling points of which are close to each other, azeotropic mixtures of at least one fluoroolefin and at least one hydrofluorocarbon, and pseudo-azeotropic compounds of at least one fluoroolefin and at least one hydrofluorocarbon.

    METHOD FOR PURIFYING TETRAFLUOROPROPENE
    8.
    发明申请
    METHOD FOR PURIFYING TETRAFLUOROPROPENE 有权
    净化四氯丙烯的方法

    公开(公告)号:US20150291490A1

    公开(公告)日:2015-10-15

    申请号:US14749877

    申请日:2015-06-25

    IPC分类号: C07C17/386

    摘要: To provide a method for efficiently separating 2,3,3,3-tetrafluoropropene (HFO-1234yf) and chloromethane (R40) from a composition containing HFO-1234yf and R40.A method for separating HFO-1234yf containing substantially no R40, which comprises bringing an azeotropic composition or azeotrope-like composition of HFO-1234yf and R40 into contact with a specific extraction solvent.

    摘要翻译: 提供从含有HFO-1234yf和R40的组合物有效分离2,3,3,3-四氟丙烯(HFO-1234yf)和氯甲烷(R40)的方法。 一种分离基本上不含R40的HFO-1234yf的方法,其包括使HFO-1234yf和R40的共沸组合物或类共沸组合物与特定的提取溶剂接触。