Process for the improvement of dyeing properties of pigments of the anilino and arylmercapto anthraquinone series
US4128396A · kind A · utility
10Cited by
5References
3Claims
0Family size
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Key dates
| Filing date | Sep 28, 1977 |
| Grant date | Dec 5, 1978 |
| Priority date | — |
| Expiry date | Sep 28, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B3/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Process for the improvement of dyeing properties of pigments of the anilino and arylmercapto anthraquinone series for bulk dyeing linear polyesters by halogenation of unhalogenated or lower halogenated compounds of the formula ##STR1## WHEREIN A is an anthraquinoidal radical being free from nitro groups, X is --NH-- or --S--, n is a number of 1 to 4 and R.sub.1 to R.sub.5 are hydrogen, halogen, alkyl, alkoxy, aryloxy, arylcarbonyl or arylsulphonyl.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.