会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 4. 发明授权
    • Method for producing N-phosphonomethylglycine
    • N-膦酰基甲基甘氨酸的制备方法
    • US07071354B2
    • 2006-07-04
    • US10481565
    • 2002-06-21
    • Hugues VandenmerschHartwig VossStefan OrstenChristian Wulff
    • Hugues VandenmerschHartwig VossStefan OrstenChristian Wulff
    • C07F9/22C07F9/28
    • C07F9/3813
    • The present invention relates to a process for the recovery of N-phosphonomethylglycine from an aqueous mixture which contains N-phosphonomethylglycine, ammonium halides, and alkali metal or alkaline earth metal halides and optionally organic impurities in dissolved form, where (a) the pH of the mixture is adjusted to a value in the range from 2 to 8, (b) a separation of the mixture on a selective nanofiltration membrane is performed, a retentate which is richer in N-phosphonomethylglycine and poorer in halides and a permeate which is richer in halides and poorer in N-phosphonomethylglycine being obtained, and (c) the N-phosphonomethylglycine is recovered from the retentate. The process according to the invention makes possible the recovery of the N-phosphonomethylglycine with simultaneous separation of the halide salts.
    • 本发明涉及从含有N-膦酰基甲基甘氨酸,卤化铵和碱金属或碱土金属卤化物和任选的溶解形式的有机杂质的含水混合物中回收N-膦酰基甲基甘氨酸的方法,其中(a) 将混合物调节至2至8范围内的值,(b)进行选择性纳滤膜上的混合物分离,更富含N-膦酰基甲基甘氨酸并且较差的卤化物的渗余物和富含物的渗透物 在得到的N-膦酰基甲基甘氨酸的卤化物和较差的碱中,和(c)从渗余物中回收N-膦酰基甲基甘氨酸。 根据本发明的方法使得可以同时分离卤化物盐来回收N-膦酰基甲基甘氨酸。