Preparation of caprolactam
US6204379A · kind A · utility
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2References
19Claims
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Assignee
Inventors
Key dates
| Filing date | Jul 27, 1999 |
| Grant date | Mar 20, 2001 |
| Priority date | — |
| Expiry date | Jul 27, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/52
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention concerns the aminomethylation of pentenoic acid derivatives, by reaction with carbon monoxide, hydrogen and ammonia, for preparing caprolactam. More precisely, it is directed to a method for preparing caprolactam wherein the aminomethylation of pentenoic acid derivatives is carried out by reaction with carbon monoxide, hydrogen, and ammonia, at a temperature higher than 30.degree. C. and in the presence of a catalyst with a base of at least one metal of Group VIII of the Periodic Table.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.