Nitration of cellulose
US4365059A · kind A · utility
1Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 3, 1981 |
| Grant date | Dec 21, 1982 |
| Priority date | — |
| Expiry date | Aug 3, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08B5/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
There is disclosed a process for the nitration of cellulose with nitric acid in the absence of sulfuric acid which comprises adding sufficient nitric oxide and oxygen or air to the nitration reaction mixture to react with the water formed in the reaction. This regenerates nitric acid which can be recycled to the reaction or removed and collected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.