Facile synthesis of novel disperse azo dyes with aromatic hydroxyl group. (January 2019)

• Record Type: Journal Article
• Authors: Qiu, Jinjing; Xiao, Jinqiu; Tang, Bingtao; Ju, Benzhi; Zhang, Shufen
• Is Part Of: Dyes and pigments. Volume 160(2019)
• Page Start: 524
• Page End: 529
• Publication Date: 2019-01
• Subjects: Aromatic hydroxyl compounds -- Azo-coupling reactions -- Disperse azo dyes -- Weakly basic amines -- Dyeing; Dyes and dyeing -- Periodicals; Pigments -- Periodicals; 667.2
• DOI: 10.1016/j.dyepig.2018.08.052
• Languages: English
• ISSNs: 0143-7208

Abstract

Abstract: A series of novel disperse azo dyes containing aromatic hydroxyl group were synthesized by a novel and simple synthetic strategy, in which, the stable solid diazonium salts of weakly basic amines were used to couple with aromatic hydroxyl compounds in alkaline aqueous solution. The experimental procedure was simple and had a high reaction rate and excellent yields. The structures of the dyes were confirmed by HRMS, FT-IR, 1 H NMR, and elemental analysis. Then, the synthesized azo dyes were used for dyeing polyester fabric and gave favorable color fastness that was comparable with that of commercial dyes. Highlights: A series of novel disperse azo dyes containing aromatic hydroxyl group were obtained. Diazonium salts of weakly basic amines can be used under alkaline conditions. There is not a large amount of waste inorganic salt and heat in the coupling process. The dyeing properties of the novel azo dyes on the polyester fabric are favorable.