Process for making iminodiacetic acid compounds from monoethanolamine substrates
US7064235B2 · kind B2 · utility
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20References
79Claims
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Key dates
| Filing date | Feb 3, 2003 |
| Grant date | Jun 20, 2006 |
| Priority date | — |
| Expiry date | Dec 1, 2024 |
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. 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.