发明名称 |
METHOD FOR THE PRODUCTION OF AMINODICARBOXYLIC ACID-N,N-DIACETIC ACIDS |
摘要 |
Provided is a method for the production of aminodicarboxylic acid N,N-diacetic acids of formula (I), wherein X is independently hydrogen or an alkali metal and n is 1 or 2. Aminodicarboxylic acid-N,N-diacetic acids of high purity can be yielded. The method involves: a) reacting an aminodicarboxylic acid, 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 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 b). |
申请公布号 |
EP2262760(A1) |
申请公布日期 |
2010.12.22 |
申请号 |
EP20090716225 |
申请日期 |
2009.03.02 |
申请人 |
BASF SE |
发明人 |
OFTRING, ALFRED;STAMM, ARMIN;WIRSING, FRIEDRICH;BRAUN, GEROLD |
分类号 |
C07C227/18 |
主分类号 |
C07C227/18 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|