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Synthesis of polycondensable anthraquinone dyes and coloured nylon fibres: II

✍ Scribed by Liu, Zhenguo; Cao, Weixiao; Sun, Yanhui; Su, Aaron C. L.; Liotta, Charles L.

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 220 KB
Volume: 44
Category: Article
ISSN: 0959-8103
DOI: 10.1002/(sici)1097-0126(199710)44:2<134::aid-pi809>3.0.co;2-w

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✦ Synopsis

Without addition of any metal ions or other catalysts, 1-chloroanthraquinone reacts readily with 6-aminocaproic acid or hexamethylenediamine in dimethylsulphone as solvent to give 1-(6-aminocaproic acid)anthraquinone and 1-(6-aminohexyl)amino]anthraquinone, respectively. 1,5-Dichloroor 1,8-dichloroanthraquinone can also be used in this reaction to give bis-substituted derivatives of anthraquinone. As a kind of functional dye, which contains wCOOH or groups and dissolves easily in nylon melt, the products wNH 2 were designed for preparing coloured nylon by polycondensation with caprolactam or nylon-6,6 salt. Nylon Ðbres with di †erent colours were obtained directly.

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The reaction of dihydroxyanthraquinone (DHA) and amines in the presence of catalyst has been reported. We found that DHA reacted easily with hexamethylenediamine in chloroform or toluene without addition of any catalyst, and mono-or dihexamethylenediamine-substituted anthraquinone, a violet green co