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US4678611A Novel dyestuff intermediates and use thereof for the manufacture of novel azo dyes 失效
新型染料中间体及其用于制造新型偶氮染料的用途

Novel dyestuff intermediates and use thereof for the manufacture of
novel azo dyes
摘要:
Dyestuff intermediates of the formula ##STR1## wherein R.sub.1 represents hydrogen, an alkyl radical of 1 to 8 carbon atoms or a phenyl radical, R.sub.2 represents hydrogen or an acyl radical and Z represents hydrogen or a sulfo group, and the use thereof for the manufacture of azo dyes of the formula ##STR2## wherein D represents the radical of a coupling component, R.sub.1 represents hydrogen, an alkyl radical of 1 to 8 carbon atoms or a phenyl radical, and R.sub.2 represents hydrogen or an acyl radical, or of azo dyes of the formula ##STR3## wherein K is the radical of a coupling component, Z represents hydrogen or the sulfo group, and R.sub.2 represents hydrogen or an acyl radical.
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