公开(公告)号：US4983764A

公开(公告)日：1991-01-08

申请号：US426106

申请日：1989-10-24

申请人： Jeno Pelyva ,  Laszlo Lendvai ,  Sandor Balint ,  Zoltan Kolonics ,  Csaba Soptei ,  Sandor Laszlo ,  Bela Karacsonyi ,  Janosne Benczik ,  Csaba Kayos ,  Sandor Silye

发明人： Jeno Pelyva ,  Laszlo Lendvai ,  Sandor Balint ,  Zoltan Kolonics ,  Csaba Soptei ,  Sandor Laszlo ,  Bela Karacsonyi ,  Janosne Benczik ,  Csaba Kayos ,  Sandor Silye

IPC分类号： C07F9/38

CPC分类号： C07F9/3813

摘要： The invention relates to an improvement of a process for preparing N-phosphonomethyl-glycine by oxydation of N-phosphonomethyl-imino-diacetic acid in an aqueous sulphuric acidic medium with hydrogen peroxide.A characteristic feature is using a waste acid liquor as reaction medium formed as aqueous sulphuric acid and obtained after the separation of N-phosphonomethyl-glycine when carrying out oxydation. This solution is optionally diluted with water until a concentration of 12-18 weight % of sulphuric acid and 3-5 weight % of N-phosphonomethyl-glycine.

摘要翻译： 本发明涉及通过在具有过氧化氢的硫酸水溶液中氧化N-膦酰基甲基 - 亚氨基二乙酸制备N-膦酰基甲基 - 甘氨酸的方法的改进。 特征是使用废酸液体作为硫酸水溶液形成的反应介质，并在进行氧化后分离出N-膦酰基甲基 - 甘氨酸后得到。 该溶液任选用水稀释直到浓度为12-18重量％的硫酸和3-5重量％的N-膦酰基甲基 - 甘氨酸。

公开(公告)号：US4931585A

公开(公告)日：1990-06-05

申请号：US306032

申请日：1989-02-02

申请人： Jeno Pelyva ,  Csaba Soptei ,  Zoltan Kolonics ,  Bela Karacsonyi ,  Sandor Balint ,  Janosne Benczik ,  Csaba Kayos ,  Laszlo Lendvai ,  Sandor Laszlo

发明人： Jeno Pelyva ,  Csaba Soptei ,  Zoltan Kolonics ,  Bela Karacsonyi ,  Sandor Balint ,  Janosne Benczik ,  Csaba Kayos ,  Laszlo Lendvai ,  Sandor Laszlo

IPC分类号： A01N57/20 ,  C07F9/38

CPC分类号： C07F9/3808

摘要： The invention relates to the preparation of N-phosphono-methyl-imino-diacetic acid from the calcium salt of imino-diacetic acid in a simplified synthesis. The process comprises in that the imino-diacetic acid calcium salt is heated with concentrated hydrochloric acid in a molar ratio of 2-3:1 at a temperature between 50.degree.-100.degree. C., the obtained imino-diacetic acid hydrogen-chloride is separated then dissolved in water and is reacted with phosphorous acid in a molar ratio of 1.0-1.2:1 calculated for imino-diacetic acid hydrogen chloride and with the aqueous solution of formaldehyde in a molar ratio of 1.0-1.4:1 under stirring, and the obtained product is isolated.

摘要翻译： 本发明涉及在简化合成中由亚氨基二乙酸钙盐制备N-膦酰基 - 甲基亚氨基二乙酸。 该方法的特征在于在50〜-100℃的温度下，将亚氨基二乙酸钙盐与浓盐酸以2-3:1的摩尔比加热，得到的亚氨基二乙酸氯化氢为 分离，然后溶解在水中，与亚磷酸二氯乙酸的摩尔比为1.0-1.2:1的亚磷酸与摩尔比为1.0-1.4:1的甲醛水溶液在搅拌下反应，和 所得产物被分离。