Process for the manufacture of an azo dye

In the process for the preparation of the dyestuff of the formula I (I) by diazotization and coupling, the aqueous suspension present when the coupling has ended is heated to temperatures of 50 DEG C. up to the boiling point of the aqueous phase in the presence of a dispersing agent.

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Bibliographische Detailangaben
Hauptverfasser:	KRUSE, HUBERT, EFFENBERGER, GUNTHER
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADHESIVES CHEMISTRY DYEING LEATHER, FURS, OR SOLID MACROMOLECULAR SUBSTANCES INANY FORM DYEING OR PRINTING TEXTILES DYES FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR LAKES LAUNDERING METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS MORDANTS NATURAL RESINS ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES PAINTS POLISHES TEXTILES TREATMENT OF TEXTILES OR THE LIKE
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Beschreibung
Zusammenfassung:	In the process for the preparation of the dyestuff of the formula I (I) by diazotization and coupling, the aqueous suspension present when the coupling has ended is heated to temperatures of 50 DEG C. up to the boiling point of the aqueous phase in the presence of a dispersing agent.