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US3957752A Quaternized azoanilino toluene sulfonamidoalkylene-amine dyes 失效
季戊四醇亚硫酸铵亚磺酰胺亚胺染料

Quaternized azoanilino toluene sulfonamidoalkylene-amine dyes
摘要:
Quaternized azo dyes made by coupling an appropriate diazotized benzenoid base with an N-dialkylaminoalkylene [.alpha.(N-alkylanilino)] m- or p-toluenesulfonamide. Quaternization of the pendant dialkylamino group of the coupling component is carried out before or after coupling. The water soluble quaternary azo dyes are especially useful for coloring acrylic fibers.
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