Method for treating lactams
US6069246A · kind A · utility
7Cited by
0References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 27, 1999 |
| Grant date | May 30, 2000 |
| Priority date | — |
| Expiry date | Jul 27, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D201/08
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to the treatment of lactams obtained directly from their synthesis process, avoiding the formation of oligomers as far as possible. The invention consists, more precisely, of a process for treating a lactam using the reaction flow obtained from a cyclizing hydrolysis of an aminonitrile, characterized in that the reaction flow leaving the hydrolysis reactor is cooled, over a period of less than or equal to 1 hour, to a temperature below or equal to 150.degree. C. before it is fractionated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.