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Disperse monoazo dyestuffs derived from 3,5-dinitro-2-amino thiophene as disazo component and an arylamine coupling component
Disperse monoazo dyestuffs derived from 3,5-dinitro-2-amino thiophene as disazo component and an arylamine coupling component
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机译:衍生自3,5-二硝基-2-氨基噻吩的分散单偶氮染料作为双偶氮组分和芳胺偶联组分
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摘要
Disperse monoazo dyestuffs, free from carboxylic and sulphonic acid groups, derived from 3,5-dinitro-2-amino thiophene as disazo component and an arylamine coupling component exhibit superior properties when used to give colorations to textile materials such as secondary cellulose acetate and cellulose triacetate, polyamide and aromatic polyester textile materials, said colorations having excellent fastness to light and to wet and dry heat treatments. The dyestuffs also have high tinctorial strength and excellent dyeing and build-up properties and produce depths of shade which are relatively independent of the dyebath pH, or the temperature of the dyebath or the liquor ratio of the dyebath.
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