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AZKO NOBEL CHEMICALS INTERNATIONAL B.V.
| AZKO NOBEL CHEMICALS INTERNATIONAL B.V. Patent applications | ||
| Patent application number | Title | Published |
|---|---|---|
| 20120142964 | PROCESS TO PREPARE A CHELATING AGENT OR PRECURSOR THEREOF USING A CYANIDE SALT - The present invention relates to a process comprising the reaction of a cyanide with an amino acid and an aldehyde, characterized in that the cyanide is a cyanide salt, the amino acid is aspartic acid and/or glutamic acid in the acidic form, and the process is performed under acidic pH by the addition of between 0 and 1 equivalent of an acid based on the amount of aspartic or glutamic acid. | 06-07-2012 |