AZOFARBSTOFFE

Azo dyestuffs of the formula wherein R1 denotes acyl, R2 denotes hydrogen, fluorine, chlorine or trifluoromethyl, R3 denotes hydrogen, optionally substituted C1-C4-alkyl, cyclohexyl or optionally substituted phenyl and R4 denotes hydrogen or C1-C4-alkyl group are suitable for dyeing natural and synt...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: GERHARD WOLFRUM, HANS-GUENTER OTTEN, ERICH KLAUKE
Format: Patent
Sprache:ger
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Zusammenfassung:Azo dyestuffs of the formula wherein R1 denotes acyl, R2 denotes hydrogen, fluorine, chlorine or trifluoromethyl, R3 denotes hydrogen, optionally substituted C1-C4-alkyl, cyclohexyl or optionally substituted phenyl and R4 denotes hydrogen or C1-C4-alkyl group are suitable for dyeing natural and synthetic fibre materials, for example for dyeing wool or polyamide fibres, in level read to violet shades with very good fastnesses to light, wet processing and perspiration, the color yield being good.