PROCESS FOR THE MANUFACTURE OF REACTIVE-DYE PREPARATIONS

• Main Authors: DITZER, REINER, KARLHEINZ, WOLF, WOLFF, JOACHIM, HORNLE, REINHOLD, FALKENBERG, KURT
• Format: Patent
• Language: English; German
• Published: 10.04.1985
• Edition: 4
• Subjects: 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

1. Process for producing preparations of reactive dyestuffs of the formula see diagramm : EP0087703,P8,F2 wherein M**1 = NH4 , Li, Na or K, R = heterocyclic reactive radical, R**1 = hydrogen or alkyl (C1 -C4 ), A = radical of a dyestuff chromophore, and n = an integer from 1 to 5, characterised in that a dyestuff which contains sulpho groups is free of reactive groups and has the formula see diagramm : EP0087703,P8,F4 wherein M**2 = H, NH4 , Li, Na or K, and wherein R**1 , n and A have the above-mentioned meaning, and which contains at most 8% by weight of salt (relative to the amount of dyestuff), is reacted in an aqueous medium which, if desired, also contains concentration-increasing additives, in the presence of an acid-binding agent, with the heterocyclic reactive component of the formula R-X (wherein R has the above-mentioned meaning and X represents fluorine or chlorine), and the liquid formulation thus obtained is buffered if appropriate or the liquid formulation is brought to dryness and then, if desired, ground to a powder.