Method for the preparation of polykis-azobenzenes
US4875986A · kind A · utility
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Key dates
| Filing date | Mar 1, 1988 |
| Grant date | Oct 24, 1989 |
| Priority date | — |
| Expiry date | Mar 1, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B27/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Polykis-azobenzenes as an important coloring material can be prepared by irradiating diazidobenzene or a derivative thereof with ultraviolet light in the form of a solution in an organic solvent, in the form of a thin film or fine powder or in the form of vapor under reduced pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.