Preparation of isophorone diamine
US5491264A · kind A · utility
3Cited by
3References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 12, 1994 |
| Grant date | Feb 13, 1996 |
| Priority date | — |
| Expiry date | Sep 12, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Isophorone diamine is prepared from isophorone nitrile by imination using a supported heteropoly acid catalyst to form the ketimine followed by the reduction of the ketimine to form the diamine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.