METHOD FOR PRODUCING WATER-SOLUBLE AZO DYE

PROBLEM TO BE SOLVED: To provide a means for inexpensively and industrially producing a water-soluble azo dye free from an inorganic salt content and having a wide structure without requiring complicated operation. SOLUTION: The method for producing the water-soluble azo dye comprises successively c...

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1. Verfasser:	KAYANO TOMOHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES CHEMISTRY DYES LAKES METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS MORDANTS NATURAL RESINS ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES PAINTS POLISHES
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a means for inexpensively and industrially producing a water-soluble azo dye free from an inorganic salt content and having a wide structure without requiring complicated operation. SOLUTION: The method for producing the water-soluble azo dye comprises successively carrying out diazotizing reaction and coupling reaction of a water-soluble heterocyclic amine in the presence of an organic nitrite by using one tank. COPYRIGHT: (C)2005,JPO&NCIPI