发明申请
US20110004016A1 METHOD FOR THE PRODUCTION OF AMINODICARBOXYLIC ACID-N,N-DIACETIC ACIDS
有权
用于生产氨基甲酰氧基-N,N-二乙酸的方法
- 专利标题: METHOD FOR THE PRODUCTION OF AMINODICARBOXYLIC ACID-N,N-DIACETIC ACIDS
- 专利标题(中): 用于生产氨基甲酰氧基-N,N-二乙酸的方法
-
申请号: US12919149申请日: 2009-03-02
-
公开(公告)号: US20110004016A1公开(公告)日: 2011-01-06
- 发明人: Alfred Oftring , Armin Stamm , Friedrich Wirsing , Gerold Braun
- 申请人: Alfred Oftring , Armin Stamm , Friedrich Wirsing , Gerold Braun
- 申请人地址: DE Ludwigshafen
- 专利权人: BASF SE
- 当前专利权人: BASF SE
- 当前专利权人地址: DE Ludwigshafen
- 优先权: EP08152207.0 20080303
- 国际申请: PCT/EP2009/052447 WO 20090302
- 主分类号: C07C227/18
- IPC分类号: C07C227/18 ; C07C229/24
摘要:
The present invention relates to a method for the production of aminodicarboxylic acid-N,N,diacetic acids of the general Formula I, wherein X independently of one another represents hydrogen or an alkali metal and n represents a number 1 or 2. Furthermore, the invention relates to aminodicarboxylic acid-N,N-diacetic acids of high purity. The inventive method comprises the following steps: A.) reacting an aminodicarboxylic acid of the general Formula II, wherein X and n have the aforementioned meanings, with 0.8 to 1.2 mole equivalents of formaldehyde and with 0.8 to 1.2 mole equivalents of hydrocyanic acid; b) reacting the reaction products of step a) with 0.8 to 1.2 mole equivalents of hydrocyanic acid and with 0.8 to 1.2 mole equivalents of formaldehyde; c) hydrolyzing in the reaction product obtained in step b).