Facile synthesis and properties of alkali-clearable azo disperse dye containing a carboxylic ester moiety

A yellow, alkali-clearable azo disperse dye containing a carboxylic ester moiety was readily synthesized from the reactant p-aminobenzoic acid by successive diazotization, coupling reaction, chlorination and esterification with ethanol. Then its molecular structure was characterized by FTIR,1H NMR,1...

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Published inChinese chemical letters Vol. 25; no. 8; pp. 1121 - 1124
Main Authors Cui, Zhi-Hua, Cheng, Xiao-Hong, Li, Xin, Lu, Hong-Hui, Wang, Xi-Dong, Chen, Wei-Guo
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.08.2014
Subjects
Alkali-clearable
Carboxylic ester
Disperse dye
PET
Synthesis
偶氮分散染料
性质
清除
碱
简易合成
羧酸酯
聚对苯二甲酸乙二醇酯纤维
胺基团
Alkali-clearable
Synthesis
Disperse dye
Carboxylic ester
PET
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Summary:A yellow, alkali-clearable azo disperse dye containing a carboxylic ester moiety was readily synthesized from the reactant p-aminobenzoic acid by successive diazotization, coupling reaction, chlorination and esterification with ethanol. Then its molecular structure was characterized by FTIR,1H NMR,13 C NMR,mass spectrometry and elemental analysis. The synthesized dye and a similar control dye containing the acylamide moiety（I） were applied to dyeing poly（ethylene terephthalate） fabric and their washing and rubbing fastness properties with different post-treatment methods（reduction clearing and alkali clearing） were examined and compared. It is found that the ester-containing disperse dye shows good alkali-clear ability on poly（ethylene terephthalate） fabric and contaminates little to environment due to the absence of reductants, as well as low toxicity and easy recycling of the hydrolysates.
Bibliography:A yellow, alkali-clearable azo disperse dye containing a carboxylic ester moiety was readily synthesized from the reactant p-aminobenzoic acid by successive diazotization, coupling reaction, chlorination and esterification with ethanol. Then its molecular structure was characterized by FTIR,1H NMR,13 C NMR,mass spectrometry and elemental analysis. The synthesized dye and a similar control dye containing the acylamide moiety（I） were applied to dyeing poly（ethylene terephthalate） fabric and their washing and rubbing fastness properties with different post-treatment methods（reduction clearing and alkali clearing） were examined and compared. It is found that the ester-containing disperse dye shows good alkali-clear ability on poly（ethylene terephthalate） fabric and contaminates little to environment due to the absence of reductants, as well as low toxicity and easy recycling of the hydrolysates.
Alkali-clearable ;Synthesis ;Carboxylic ester; Disperse dye; PET
11-2710/O6
ISSN:1001-8417
1878-5964
DOI:10.1016/j.cclet.2014.03.045