Synthesis of an anthraquinonoid disperse reactive dye based on a ligand-free Ullmann reaction / Yan-Qin Zhang in COLORATION TECHNOLOGY, Vol. 133, N° 4 (08/2017)  

[article]  inCOLORATION TECHNOLOGY > Vol. 133, N° 4 (08/2017) . - p. 283-292 Titre : Synthesis of an anthraquinonoid disperse reactive dye based on a ligand-free Ullmann reaction Type de document : texte imprimé Auteurs : Yan-Qin Zhang, Auteur ; Li Qi, Auteur ; Jian-Ping Sun, Auteur ; Jia-Jie Long, Auteur Année de publication : 2017 Article en page(s) : p. 283-292 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants -- Analyse Colorants -- Synthèse Colorants réactifs Laine Soie et constituants Teinture -- Fibres textiles Index. décimale : 667.3 Teinture et impression des tissus Résumé : A new anthraquinonoid disperse reactive dye containing a dichlorotriazine reactive group was successfully synthesised on the basis of the Ullmann reaction in a ligand-free system by employing a copper(i) iodide as catalyst, in combination with a subsequent condensation reaction. The parameters of the cross-coupling reaction between 1-chloroanthraquinone and 2,5-diaminotoluene sulphate were investigated and optimised, such as the molar ratio of the reactants, the dosage of potassium carbonate and copper(i) iodide, the reaction temperature, and the reaction time. The results demonstrate that the dosage of potassium carbonate and the reaction time had significant impacts on the yield of the dye precursor, and an optimum synthesis process was also recommended. Moreover, the achieved dye was successfully characterised and confirmed from chemical structure and colour characteristics by employing Fourier transform infrared analysis, nuclear magnetic resonance spectroscopy, UV-vis absorption spectroscopy, elemental analysis, and liquid chromatography–mass spectrometry (LC-MS). Furthermore, a successful application of the obtained dye was achieved, with satisfactory coloration properties on silk and wool. Note de contenu : - EXPERIMENTAL : Materials and chemicals - Synthesis of the precursor of the anthraquinonoid disperse reactive dye - Synthesis of the anthraquinonoid disperse reactive dye - Characterisation and analysis of the obtained dye - Spectroscopic data of the final product - Preliminary coloration of sild and wool with the obtained dye - Color measurement and levelling property assessment - Evaluation of the colour fastness of dyes samples - RESULTS AND DISCUSSION : Influence of parameters on the synthesis of the precursor (1a and 1b) by the ligand-free Ullmann reaction - Characterisation of the anthraquinonoid disperse reactive dye - Coloration properties of the obtained anthraquinonoid disperse reactive dye on silk and wool DOI : 10.1111/cote.12280 En ligne : https://drive.google.com/file/d/1WjQ4xE78pQDCvnlEQQah7NHbJey5eUC4/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28880 [article]

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