✦ LIBER ✦

Synthesis of polycondensable anthraquinone dyes and coloured nylon fibres: III

✍ 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: 181 KB
Volume: 44
Category: Article
ISSN: 0959-8103
DOI: 10.1002/(sici)1097-0126(199712)44:4<461::aid-pi849>3.0.co;2-b

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✦ Synopsis

A series of 1,5-diaryl-and 1,8-diaryl-substituted anthraquinone dyes, which contain wCOOH or groups, were prepared. The aryl-substituted wNH 2 anthraquinone dyes possess excellent thermostability and will keep their original colour in polycondensation with caprolactam at 260È280¡C. With di †erent aryl substituents the anthraquinone dyes exhibit di †erent colours and can be used to prepare a series of coloured nylon-6 Ðbres.

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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