Production of anthraquinone
US4036860A · kind A · utility
7Cited by
1References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 25, 1975 |
| Grant date | Jul 19, 1977 |
| Priority date | — |
| Expiry date | Aug 25, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C46/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Anthraquinone is produced by oxidation of diphenylmethane compounds in the gaseous phase in the presence of oxygen-containing compounds of vanadium and titanium and at least one other metal in a specific ratio by weight. Anthraquinone prepared by the process of the invention is a starting material for the production of dyes and pesticides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.