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    Method for preparing a trifluoromethanesulfinic acid salt
    8.
    发明授权
    Method for preparing a trifluoromethanesulfinic acid salt 有权
    三氟甲磺酸盐的制备方法

    公开(公告)号：US08471059B2

    公开(公告)日：2013-06-25

    申请号：US12745196

    申请日：2008-11-25

    申请人： Vincent Schanen ,  Olivier Buisine ,  François Metz ,  Bernard Besson

    发明人： Vincent Schanen ,  Olivier Buisine ,  François Metz ,  Bernard Besson

    IPC分类号： C07C313/04

    CPC分类号： C07C313/04

    摘要： The present invention relates to a method for preparing a salt of trifluoromethanesulphinic acid termed “triflinic acid”. More specifically, the invention relates to a method for preparing a highly pure triflinic acid salt. The method of the invention for preparing a highly pure triflinic acid salt, starting from an aqueous mixture comprising the latter combined with a trifluoroacetic acid salt and saline impurities resulting from the method for preparing same, is characterized in that said mixture is subjected to the following operations: —first controlled acidification such that the trifluoroacetic acid salt is essentially released in the acid form thereof, the majority of the triflinic acid remaining in a salified form, —optional separation of the salts originating from the acid having been used for the acidification and recovery of an aqueous phase, —separation of the trifluoroacetic acid from the separated aqueous phase comprising the alkaline salt of triflinic acid, trifluoroacetic acid, triflinic acid and the excess strong acid, therefore resulting in an aqueous phase depleted of trifluoroacetic acid but comprising the alkaline salt of triflinic acid, —recovery of the alkaline salt of triflinic acid from the aqueous phase.

    摘要翻译： 本发明涉及一种称为“三氟酸”的三氟甲磺酸的盐的制备方法。 更具体地说，本发明涉及制备高纯度三氟酸盐的方法。 本发明制备高纯度三氟酸盐的方法，其特征在于，将含有后者与由三氟乙酸盐组合的含水混合物和由其制备方法产生的盐水杂质开始混合，其特征在于所述混合物经受以下 操作：首先控制酸化，使得三氟乙酸盐基本上以其酸形式释放，大部分三氟酸残留成盐化形式， - 用于酸化的源自酸的盐的可选分离和 水相的回收，三氟乙酸从包含三氟酸，三氟乙酸，三氟酸的碱金属盐和过量的强酸的分离的水相中分离，因此导致水相中缺乏三氟乙酸但含有碱 三氟酸盐，三氟酸碱性碱性盐的还原 d从水相中。

    Preparation Method for Perfluoroalkane Sulfinate
    9.
    发明申请
    Preparation Method for Perfluoroalkane Sulfinate 有权
    全氟烷基亚磺酸盐的制备方法

    公开(公告)号：US20130023695A1

    公开(公告)日：2013-01-24

    申请号：US13574138

    申请日：2011-03-03

    申请人： Takashi Kashiwaba ,  Tsutomu Nanmyo ,  Yoichi Takenaka

    发明人： Takashi Kashiwaba ,  Tsutomu Nanmyo ,  Yoichi Takenaka

    IPC分类号： C07C313/04

    CPC分类号： C07C313/04

    摘要： In a method for obtaining an alkali metal perfluoroalkanesulfinate by reacting a perfluoroalkanesulfonyl halide with a sulfur-containing reducing agent in the presence of water, a reaction liquid containing the alkali metal sulfinate obtained after the reaction is concentrated till a specific concentration, thereby inorganic salts, which are impurities in the solution, are precipitated and removed, and a filtrate after removing the inorganic salts is subjected to an operation such as concentration and drying, thereby obtaining the target alkali metal perfluorosulfinate with a high purity and a good operability. Furthermore, an organic solvent for extraction becomes unnecessary. Therefore, it is possible to greatly reduce wastes.

    摘要翻译： 在通过使全氟烷基磺酰卤与含硫还原剂在水的存在下反应来获得全氟烷基亚磺酸碱金属的方法中，将反应后得到的含有碱金属亚磺酸盐的反应液浓缩至特定浓度， 将溶液中的杂质析出除去，除去无机盐后的滤液进行浓缩干燥等操作，得到纯度高，操作性好的目标碱金属全氟亚磺酸酯。 此外，不需要用于萃取的有机溶剂。 因此，可以大大减少废物。