Preparation of maleamic acid
US5399750A · kind A · utility
40Cited by
3References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 21, 1994 |
| Grant date | Mar 21, 1995 |
| Priority date | — |
| Expiry date | Jan 21, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C231/02
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Maleamic acid (aminomaleic acid) is improvedly prepared by reacting gaseous ammonia with molten maleic anhydride under reactant contact conditions of high surface area, for example reacting said gaseous NH.sub.3 with a thin film of said molten maleic anhydride or with said molten maleic anhydride in a state of vigorous agitation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.