Production of 6-aminocaproic acid
US6372939B1 · kind B1 · utility
34Cited by
15References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 16, 2000 |
| Grant date | Apr 16, 2002 |
| Priority date | — |
| Expiry date | Nov 16, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C227/06
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for making 6-aminocaproic acid by hydroformylating 3-pentenenitrile to produce 3-, 4-, and 5-formylvaleronitrile (FVN mixture), oxidizing the FVN mixture to produce 3-, 4-, and 5-cyanovaleric acid; hydrogenating the resulting product to produce 6-aminocaproic acid, 5-amino-4-methylvaleric acid, and 4-amino-3-ethylbutyric acid; and isolating 6-aminocaproic acid from the reaction product. The resulting 6-aminocaproic acid can be cyclized to produce caprolactam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.