DYEING POLYCAPRONAMIDE TEXTILES USING MIXED DYESTUFFS

A method of dyeing textile materials of polycapronamide, enabling low temperature dyeing conditions and process duration times which do not exceed the art standards, is characterized by the following combined features: (a) use of at least two discrete combinations of dyestuffs, which show different...

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Bibliographische Detailangaben
Hauptverfasser: EUGENIO MAGNI, CLAUDIO PERNETTI
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A method of dyeing textile materials of polycapronamide, enabling low temperature dyeing conditions and process duration times which do not exceed the art standards, is characterized by the following combined features: (a) use of at least two discrete combinations of dyestuffs, which show different kinetic behaviors from each other; (b) maintenance of an alkaline pH at tapering values, in the extreme down to neutral; (c) use of exclusively anionic dyeing aids; and (d) maintenance through the various method steps of a maximum temperature as high as 60 DEG C., preferably as 40 DEG C. Perfectly uniform dyeing is achieved through the utilization of conventional apparata and dyeing method procedures.