Basic azo dyes having a quaternized s-triazolo-[2,3-a]-pyrimidine diazo component radical
US3980632A · kind A · utility
3Cited by
6References
46Claims
0Family size
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Key dates
| Filing date | May 16, 1974 |
| Grant date | Sep 14, 1976 |
| Priority date | — |
| Expiry date | May 16, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B44/18
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Basic azo dyes free from sulphonic acid groups of the formula ##EQU1## in which R signifies an alkyl or alkenyl radical, R.sub.1 and R.sub.3 independently signify hydrogen, hydroxyl, halogen, an alkyl, aryl, cycloalkyl, alkoxy, aryloxy, amino or alkylthio radical, PA1 R.sub.2 signifies hydrogen, an alkyl, aryl or cycloalkyl radical, PA1 R.sub.4 signifies the radical of a coupling component of the aliphatic, benzene, naphthalene or heterocyclic series, and PA1 A.sup.- signifies an organic or inorganic anion, Which compounds are useful for dyeing synthetic materials, leather and paper and for pigmenting plastics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.