Process for producing a nitrile
US5965764A · kind A · utility
6Cited by
1References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 5, 1998 |
| Grant date | Oct 12, 1999 |
| Priority date | — |
| Expiry date | Aug 5, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C253/20
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Process for producing a nitrile by dehydration reaction of an amide in the presence of a carboxylic acid having the same radical as the amide, or by adding urea to a carboxylic acid with the carboxylic acid either molten or dissolved in a solvent, where the amount of urea used is less than about 0.8 in molar ratio to the carboxylic acid, or when an exhaust gas distillate line connected to the reactor is kept at about 60.degree. C. or higher, or while a gas that is inert to the reaction is fed into the reaction and the produced nitrile and water are concurrently distilled out.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.