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    • 7. 发明授权
    • Method for separating a carboxylic acid in salified form bearing at least one halogen atom
    • 分离含有至少一个卤素原子的盐化形式的羧酸的方法
    • US08633336B2
    • 2014-01-21
    • US13003136
    • 2009-07-08
    • Olivier BuisineFrançois Metz
    • Olivier BuisineFrançois Metz
    • C07C53/21
    • C07C51/412C07C51/48C07C53/21C07C53/18C07C53/19C07C53/16
    • The subject of the present invention is a method for separating a carboxylic acid in salified form bearing at least one halogen atom at the α position of the carbonyl group from a medium comprising it. The method according to the invention, for separating a carboxylic acid in salified form bearing at least one halogen atom at the α position of the carbonyl group from an aqueous medium comprising it, is characterized by the fact that the latter is brought into contact with an onium salt leading to the formation of two phases: an organic phase comprising the salt resulting from the reaction of the salt of the carboxylic acid bearing at least one halogen atom at the α position of the carbonyl group and of the onium salt leading to the displacement of the cation from the carboxylic acid by the onium, an aqueous phase comprising the various salts, in particular the one resulting from the reaction of the cation of the carboxylic acid with the anion of the onium, and by the fact that the organic and aqueous phases are then separated and that the onium salt of the carboxylic acid is recovered from the organic phase.
    • 本发明的主题是在含有羰基的α位的至少一个卤原子的盐化形式的羧酸的分离方法。 根据本发明的方法,用于从含有它的水性介质中分离在羰基的α位上带有至少一个卤素原子的盐化形式的羧酸,其特征在于后者与 导致形成两相的有机相:包含由在羰基的α位上带有至少一个卤素原子的羧酸的盐与导致位移的鎓盐反应而产生的盐的有机相 的阳离子由羧酸由鎓形成,包含各种盐的水相,特别是由羧酸的阳离子与鎓的阴离子反应的水相,以及有机和水性 然后分离相,并从有机相中回收羧酸的鎓盐。
    • 8. 发明申请
    • METHOD FOR PREPARING TRIFLUOROMETHANESULPHINIC ACID
    • 制备三氟甲磺酸的方法
    • US20120197039A1
    • 2012-08-02
    • US12744875
    • 2008-11-25
    • Vincent SchanenOlivier BuisineFrançois MetzBernard Besson
    • Vincent SchanenOlivier BuisineFrançois MetzBernard Besson
    • C07C313/04
    • C07C313/04
    • The present invention relates to a method for preparing a highly pure trifluoromethanesulphinic acid. The method of the invention for preparing a highly pure trifluoromethanesulphinic acid, starting from an aqueous mixture comprising a trifluoromethanesulphinic acid salt, 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:- acidification such that the trifluoroacetic acid salt and the triflinic acid salt are released in an acid form,- separation of the trifluoroacetic acid and trifluoromethanesulphinic acid by distillation enabling the trifluoroacetic acid to be recovered at the top of the distillation and the trifluoromethanesulphinic acid to be recovered at the bottom of the distillation,- separation by distillation of the trifluoromethanesulphinic acid present in the distillation residue previously obtained.
    • 本发明涉及一种制备高纯度三氟甲磺酸的方法。 本发明制备高纯度三氟甲磺酸的方法,其特征在于,由包含三氟甲磺酸盐,三氟乙酸盐和由其制备方法得到的盐水杂质的含水混合物开始,将所述混合物进行以下步骤 操作:酸化使得三氟乙酸盐和三氟甲磺酸盐以酸的形式释放, - 通过蒸馏分离三氟乙酸和三氟甲磺酸,使三氟乙酸在蒸馏顶部回收,三氟甲磺酸 在蒸馏的底部回收, - 通过蒸馏分离先前获得的蒸馏残余物中的三氟甲磺酸。