New water-soluble azo dyes and their production

New water-soluble azo dyes and their production

The invention comprises water-soluble azo dyes of the formula wherein X is H, alkyl, alkoxy or acylamino, Y is H, alkyl, alkoxy or SO3H, R is H, alkyl or substituted alkyl and n is 1 or 2. They may be obtained by reacting an azo dye of the formula with diketene with acetoacetylation of the amino g...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: LUETZEL GERHARD, BAUMANN HANS
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:The invention comprises water-soluble azo dyes of the formula wherein X is H, alkyl, alkoxy or acylamino, Y is H, alkyl, alkoxy or SO3H, R is H, alkyl or substituted alkyl and n is 1 or 2. They may be obtained by reacting an azo dye of the formula with diketene with acetoacetylation of the amino group. Examples are given for the production of the dyes. They are useful for dyeing or printing natural or synthetic polyamide textile materials.