Process for manufacturing N-acyliminodiacetic acids
US4533500A · kind A · utility
7Cited by
4References
8Claims
0Family size
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Key dates
| Filing date | Mar 17, 1983 |
| Grant date | Aug 6, 1985 |
| Priority date | — |
| Expiry date | Mar 17, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C233/46
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
N-acyliminodiacetic acids are manufactured by reacting formaldehyde or a formaldehyde generator compound with a N-unsubstituted amide or a generator thereof and with carbon monoxide in contact with a carbonylation catalyst, for example, a cobalt compound, the ratio of the aldehyde groups to the amide groups being at least 2:1. The formaldehyde generator can be a polymeric form of formaldehyde and the amide generator can be a carboxylic ester, acid or anhydride.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.