A new anthraquinonic basic dye and process for obtaining it

A new anthraquinonic basic dye and process for obtaining it

The invention comprises the dye of the formula It is prepared by reacting in an aqueous medium 1 - amino - 4 - bromo - anthraquinone - 2-sulphonic acid with 3-amino-1,2,4-triazol in the presence of CuCl and Na2CO3, followed by desulphonating with Na2S2O4 at a weak alkaline pH, alkylating with dimet...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: BRODMAN FELICIA, ROSENBERG SORELLA, SANIELEVICI MIPOLIT, STULEANU CRYNETTE
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 the dye of the formula It is prepared by reacting in an aqueous medium 1 - amino - 4 - bromo - anthraquinone - 2-sulphonic acid with 3-amino-1,2,4-triazol in the presence of CuCl and Na2CO3, followed by desulphonating with Na2S2O4 at a weak alkaline pH, alkylating with dimethyl sulphate and precipitating by means of a chloride solution.