发明授权
US4102880A Benzoylated dehydrothio-p-toluidine sulfonic acid-azo-pyridone dyes 失效
苯甲酰化的脱氢硫代对甲苯胺磺酸 - 偶氮吡啶酮染料

Benzoylated dehydrothio-p-toluidine sulfonic acid-azo-pyridone dyes
摘要:
Azo dyes of the formula ##STR1## wherein R is the radical of a coupling component of the pyridine or pyridone series are disclosed; said dyes having brilliant greenish-yellow shades, high substantivity, good lightfastness and fastness to water, and suitable for dyeing and printing materials such as silk, leather, wood, polyamide, polyurethanes and cellulosic material of fibrous structure.
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