Process for the production of aromatic mononitro compounds
US4064147A · kind A · utility
15Cited by
3References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 12, 1976 |
| Grant date | Dec 20, 1977 |
| Priority date | — |
| Expiry date | May 12, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C201/08
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Aromatic mononitro compounds are prepared by nitrating aromatic compounds with nitric acid having a concentration between 70 and 100% by weight, working up of the nitration mixture in a rectification column and separation of the aromatic mononitro compound. In the nitration mixture and in the rectification column, depending upon the concentration of the nitric acid present, the ratio by weight of nitric acid plus water is controlled and not lowered below defined figures. Optionally water or nitric acid is introduced into the rectification column. PAC BACKGROUND
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.