METHOD FOR PREPARING AMMONIUM SALTS OF FUMARIC OR SUCCINIC ACID
    2.
    发明申请
    METHOD FOR PREPARING AMMONIUM SALTS OF FUMARIC OR SUCCINIC ACID 有权
    用于制备烟酸或硫酸的铵盐的方法

    公开(公告)号:US20120130125A1

    公开(公告)日:2012-05-24

    申请号:US13061148

    申请日:2009-08-24

    IPC分类号: C07C51/41

    摘要: An improved process for preparing ammonium salts from fumaric or succinic acid, is described. The method consists of neutralizing the corresponding acid carbonate or ammonium bicarbonate at a molar stoichiometric or greater than the stoichiometric ratio of 4-5% in a saturated aqueous solution of the synthesized salt at a temperature not exceeding 40° C., followed by separation of the product and drying at a temperature not exceeding 70° C. After separation of the ammonium salts, the filtrate can be re-used. Isolation of the product is usually carried out by cooling the reaction mixture to a temperature of 15-18C°. The product comes out in almost crystalline form. Saturated aqueous solution of the synthesized salt is formed by the interaction of carbonate or ammonium bicarbonate with the appropriate acid at a temperature not exceeding 40° C. It is possible to obtain cleaner salt concentration weighing more than 99% and not yielding lower than 98%. The method allows for an increase in the yield of targeted products and ensures their consistent high quality due to their formation in crystalline form.

    摘要翻译: 描述了从富马酸或琥珀酸制备铵盐的改进方法。 该方法包括在不超过40℃的温度下,在合成盐的饱和水溶液中以相当于化学计量或大于化学计量比为4-5%的摩尔化学计量比或相对应的酸式碳酸氢铵中和,然后分离 产物并在不超过70℃的温度下干燥。分离出铵盐后,可以重新使用滤液。 产物的分离通常通过将反应混合物冷却至15-18℃的温度来进行。 该产品以几乎结晶的形式出现。 合成的盐的饱和水溶液是通过碳酸氢铵或碳酸氢铵与适当的酸在不超过40℃的温度的相互作用形成的。可以获得重量大于99%且不低于98%的清洁剂盐浓度, 。 该方法允许增加目标产物的产率,并且由于其形成结晶形式,从而确保其一致的高质量。

    Method for preparing ammonium salts of fumaric or succinic acid
    6.
    发明授权
    Method for preparing ammonium salts of fumaric or succinic acid 有权
    制备富马酸或琥珀酸铵盐的方法

    公开(公告)号:US08933271B2

    公开(公告)日:2015-01-13

    申请号:US13061148

    申请日:2009-08-24

    IPC分类号: C07C51/43 C07C51/41

    摘要: An improved process for preparing ammonium salts from fumaric or succinic acid, is described. The method consists of neutralizing the corresponding acid carbonate or ammonium bicarbonate at a molar stoichiometric or greater than the stoichiometric ratio of 4-5% in a saturated aqueous solution of the synthesized salt at a temperature not exceeding 40° C., followed by separation of the product and drying at a temperature not exceeding 70° C. After separation of the ammonium salts, the filtrate can be re-used. Isolation of the product is usually carried out by cooling the reaction mixture to a temperature of 15-18 C.°. The product comes out in almost crystalline form. Saturated aqueous solution of the synthesized salt is formed by the interaction of carbonate or ammonium bicarbonate with the appropriate acid at a temperature not exceeding 40° C. It is possible to obtain cleaner salt concentration weighing more than 99% and not yielding lower than 98%. The method allows for an increase in the yield of targeted products and ensures their consistent high quality due to their formation in crystalline form.

    摘要翻译: 描述了从富马酸或琥珀酸制备铵盐的改进方法。 该方法包括在不超过40℃的温度下,在合成盐的饱和水溶液中以相当于化学计量或大于化学计量比为4-5%的摩尔化学计量比或相对应的酸式碳酸氢铵中和,然后分离 产物并在不超过70℃的温度下干燥。分离出铵盐后,可以重新使用滤液。 产物的分离通常通过将反应混合物冷却至15-18℃的温度来进行。 该产品以几乎结晶的形式出现。 合成的盐的饱和水溶液是通过碳酸氢铵或碳酸氢铵与适当的酸在不超过40℃的温度的相互作用形成的。可以获得重量大于99%且不低于98%的清洁剂盐浓度, 。 该方法允许增加目标产物的产率,并且由于其形成结晶形式,从而确保其一致的高质量。