Purification of aminonitriles or diamines
US5192399A · kind A · utility
11Cited by
13References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 10, 1991 |
| Grant date | Mar 9, 1993 |
| Priority date | — |
| Expiry date | Sep 10, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S203/06
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Separation of an aliphatic aminonitrile or an aliphatic diamine from a mixture containing the corresponding cyclic, aliphatic, mono-unsaturated amine by adding caustic compound to the mixture and then distilling the aminonitrile or the diamine at a temperature less than 170.degree. C. and at a pressure of less than 1 atmosphere.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.