Effects of additives on the dyeing of nylon-6 with dyes containing hydrophobic and hydrophilic moieties

A series of azo disperse dyes with variable hydrophobic chain length and hydrophilic (hydroxy or glucosyl group) head were synthesised. 1H and 13C NMR spectra indicated that the glucosyl moiety was linked to the azo structure with a β anomeric bond. The dyeing properties on polyamide fibres were ass...

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Bibliographic Details
Published in:Dyes and pigments 2000-10, Vol.47 (1), p.177-188
Main Authors: Savarino, P, Piccinini, P, Montoneri, E, Viscardi, G, Quagliotto, P, Barni, E
Format: Article
Language:English
Subjects:
Applied sciences
Chemical industry and chemicals
Colour measurements
Cyclodextrins
Disperse dyes
Dyeing isotherms
Dyeing tests
Dyes, pigments
Exact sciences and technology
Fibers and threads
Forms of application and semi-finished materials
Glucosyl dyes
Industrial chemicals
NMR spectra
Polymer industry, paints, wood
Technology of polymers
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Summary:A series of azo disperse dyes with variable hydrophobic chain length and hydrophilic (hydroxy or glucosyl group) head were synthesised. 1H and 13C NMR spectra indicated that the glucosyl moiety was linked to the azo structure with a β anomeric bond. The dyeing properties on polyamide fibres were assessed with dyeing isotherms and Linitest experiments. The positive effects of additives, as ternary systems (SDS, Brij 35 and octanol) or cyclodextrins, on the dyeing uniformity were shown by tristimulus colorimetry.
ISSN:0143-7208
1873-3743
DOI:10.1016/S0143-7208(00)00074-7