PROCESS FOR DYEING WET-SPUN AROMATIC POLYAMIDES IN GEL FORM

At present it is not possible to adequately dye synthetic fibers which contain aromatic radicals, The present invention seeks to overcome the drawback in the art by providing a process for the production of dyed filaments from aromatic polyamides, which comprises dyeing wet-spun filaments of an arom...

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Bibliographische Detailangaben
Hauptverfasser:	BENTZ, FRANCIS, MIESSEN, RALF, WOLF, GERHARD D, KUENZEL, HANS E
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS DYEING LEATHER, FURS, OR SOLID MACROMOLECULAR SUBSTANCES INANY FORM DYEING OR PRINTING TEXTILES FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR LAUNDERING NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING TEXTILES TREATMENT OF TEXTILES OR THE LIKE
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Beschreibung
Zusammenfassung:	At present it is not possible to adequately dye synthetic fibers which contain aromatic radicals, The present invention seeks to overcome the drawback in the art by providing a process for the production of dyed filaments from aromatic polyamides, which comprises dyeing wet-spun filaments of an aromatic polyamide, which optionally contains heterocyclic groups and which is not modified with acid or basic groups, before, during or after stretching, in an aqueous bath containing a cationic or anionic water-soluble dye.