Nitration process
US5963878A · kind A · utility
9Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 1998 |
| Grant date | Oct 5, 1999 |
| Priority date | — |
| Expiry date | Jul 30, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C201/08
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A continuous process to nitrate a nitratable aromatic compound utilizing nitric acid and sulfuric acid feed stocks is described. The process includes the collecting of NO.sub.x O gases with water under pressure to and treating the NO.sub.x gases with water under pressure to produce weak nitric acid which is recycled to the nitric acid feed stock. The process is efficient, permitting the venting of NO.sub.x free gases to the atmosphere.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.