发明授权
US4083845A Polyazo dyestuffs having a dianisidine component, a diaminophenyl sulfonic acid component, and a naphthol component 失效
具有二茴香胺组分的多偶氮染料,二氨基苯基磺酸组分和萘酚组分

Polyazo dyestuffs having a dianisidine component, a diaminophenyl
sulfonic acid component, and a naphthol component
摘要:
The invention relates to polyazo dyestuffs of the formula ##STR1## in which R denotes hydrogen, methyl or chlorine,X denotes methyl or ethyl andK represents a radical of the formula ##STR2## WHEREIN M DENOTES 1, 2 OR 3, OR REPRESENTS A RADICAL OF THE FORMULA ##STR3## wherein Y denotes hydrogen, chlorine, nitro, --SO.sub.3 H, alkyl, alkoxy, etc.The new dyestuffs are particularly suitable for dyeing and printing cellulose fibre materials, especially paper and cotton.
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