Effects of molecular structure on dyeing performance and colour fastness of yellow dyestuffs applied to polypropylene fibres in supercritical carbon dioxide / Keisuke Miyazaki in COLORATION TECHNOLOGY, Vol. 128, N° 1 (2012)  

[article]  inCOLORATION TECHNOLOGY > Vol. 128, N° 1 (2012) . - p. 51-59 Titre : Effects of molecular structure on dyeing performance and colour fastness of yellow dyestuffs applied to polypropylene fibres in supercritical carbon dioxide Type de document : texte imprimé Auteurs : Keisuke Miyazaki, Auteur ; Isao Tabata, Auteur ; Teruo Hori, Auteur Année de publication : 2012 Article en page(s) : p. 51-59 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants -- Stabilité Dioxyde de carbone Fluides supercritiques Polypropylène Teinture -- Fibres textiles synthétiques Index. décimale : 667.3 Teinture et impression des tissus Résumé : Thirteen dyestuffs of four chemical classes (quinophthalone, anthraquinone, isothiazole-fused anthrone and pyridone azo) were applied for the dyeing of unmodified polypropylene fibres in supercritical carbon dioxide. From these 13 dyestuffs, three dyestuffs that have a pure yellow hue and good dyeability for polypropylene fibres were found. The results of a dyeability test using the 13 dyestuffs suggested that the affinity for polypropylene fibres requires, in the structural character of the dyestuff molecule, not only extreme hydrophobicity but also high aliphaticity. The isothiazole-fused anthrone nonanamide dyestuff and two types of N-butyl substituted pyridone azo dyestuffs were examined for build-up and colour fastness properties. The light fastness of the dyed fabric was not so good. The ratings of fastness to washing, perspiration and rubbing ranged from excellent to fairly good with the increase of the depth of shade. From the relationship between the build-up curve and the colour fastness, it was found that the dyestuff of the isothiazole-fused anthrone nonanamide is suitable for polypropylene dyeing in a pale or medium shade, and that the two types of N-butyl substituted pyridone azo dyestuffs are suitable in a deep shade. Note de contenu : - EXPERIMENTAL : Materials - Methods - RESULTS AND DISCUSSION : Dyeability and structural character of dyestuff molecules - Colour strength - Colour fastness DOI : 10.1111/j.1478-4408.2011.00344.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2011.00344.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13097 [article]

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Relationship between colour fastness and colour strength of polypropylene fabrics dyed in supercritical carbon dioxide: effect of chemical structure in 1,4-bis(alkylamino)anthraquinone dyestuffs on dyeing performance / Keisuke Miyazaki in COLORATION TECHNOLOGY, Vol. 128, N° 1 (2012)  

[article]  inCOLORATION TECHNOLOGY > Vol. 128, N° 1 (2012) . - p. 60-67 Titre : Relationship between colour fastness and colour strength of polypropylene fabrics dyed in supercritical carbon dioxide: effect of chemical structure in 1,4-bis(alkylamino)anthraquinone dyestuffs on dyeing performance Type de document : texte imprimé Auteurs : Keisuke Miyazaki, Auteur ; Isao Tabata, Auteur ; Teruo Hori, Auteur Année de publication : 2012 Article en page(s) : p. 60-67 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Anthraquinone Colorants -- Stabilité Couleurs -- Stabilité Dioxyde de carbone Fluides supercritiques Teinture -- Fibres textiles synthétiques Index. décimale : 667.3 Teinture et impression des tissus Résumé : A series of 1,4-bis(alkylamino)anthraquinone dyestuffs were applied for supercritical fluid dyeing of unmodified polypropylene fabric, which is known to be difficult to dye in a conventional aqueous system. A marked tendency was shown that the dyeability improved as the carbon number of alkyl substituents on the anthraquinone chromophore increased. By evaluating the build-up curves of the dyestuff, it was found that the carbon number of optimum alkyl chain length for 1,4-bis(alkylamino)anthraquinone was 8–12. From the relationship between the build-up curve and the colour fastness, it was concluded that the upper limit of dyeing depth for good colour fastness was 40 mmol/kg of fibre. Note de contenu : - EXPERIMENTAL : Materials - Methods - RESULTS AND DISCUSSION : Dyeability - Colour Strength - Colour fastness DOI : 10.1111/j.1478-4408.2011.00331.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2011.00331.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13098 [article]

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