Manufacture of basic dyes by catalytic oxidation
US4000135A · kind A · utility
6Cited by
1References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 8, 1974 |
| Grant date | Dec 28, 1976 |
| Priority date | — |
| Expiry date | Jul 8, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2531/842
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A catalytic process for the oxidation of compounds of the formula ##STR1## where Z to Z.sup.6 are hydrogen or substituents, in which iron tetraazaannulenes are used as catalysts. The process gives good yields when using oxygen for oxidation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.