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HYDROXYPYRIDONE METHIDE AZO DYES
2001The invention relates to hydroxypyridone methide azo dyes corresponding to the formula (I) and to their tautomer forms. In said formula, the substituents X to X, R and R are defined as per the description. Said dyes are particularly suitable for dyeing and printing hydrophobic, synthetic-fibre materials, or mixtures thereof and natural-fibre materials.
DYSTAR TEXTILFARBEN GMBH & CO +1 more
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Azo dyes based on 3,5,3′,5′-tetramethylbenzidine: Potential substitutes for carcinogenic azo dyes
Chemico-Biological Interactions, 1984P D, Josephy, M, Weerasooriya
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