Process for making iminodiacetic acid compounds from monoethanolamine substrates
US6555706B2 · kind B2 · utility
3Cited by
19References
128Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 15, 2001 |
| Grant date | Apr 29, 2003 |
| Priority date | — |
| Expiry date | May 15, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/3813
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention is directed to a process for making an iminodiacetic acid compound from a monoethanolamine substrate having the formula: wherein R1 is hydrogen, hydrocarbyl, or substituted hydrocarbyl. The process includes a series of reactions comprising a cyanomethylation, a hydrolysis and a dehydrogenation with the hydrolysis and dehydrogenation steps being carried out either sequentially or concurrently. In a particular embodiment, the iminodiacetic acid produced is disodium iminodiacetic acid and the monoethanolamine substrate used is 2-aminoethanol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.