A series of oligomeric azo dyes has been synthesized by coupling various aromatic diazonium salts to p-hydroxy benzoic acid–formaldehyde (p-HBAF) oligomer. They were evaluated in terms of their softening points, yields, colour, UV–visible spectra, IR spectra and PMR spectra. Dyeing on wool and nylon resulted in yellow to red shades having moderate to good fastness to light and good to very good fastness to washing.
References
1.
[1] Patel Hasmukh S and Shah Sanket N1995Int. J. Polym. Mater.281–4
2.
Patel Hasmukh S and Shah Sanket N1995Chem. Abstr.123259730-259730
3.
[2] Restove V M et al 1978 USSR Patent 585245
4.
Restove V M et al 1978Chem. Abstr.8875311-75311
5.
[3] Patel Hasmukh S and Lad Badu D1991Angew Makromol. Chem.18741–50
6.
Patel Hasmukh S and Lad Badu D1991Chem. Abstr.114209213-209213
7.
[4] Romanov Yu A and Reshetove V M 1980 Germen Patent 2905431
8.
Romanov Yu A and Reshetove V M1980Chem. Abstr.93221919-221919
9.
[5] Yuremchuk N A, Brandybura I M, Vizgert R V and Levitas I E 1970 USSR Patent 349700
10.
Yuremchuk N A et al 1973Chem. Abstr.7845039-45039
11.
[6] Patel Hasmukh S and Lad Babu D1991Dyes and Pigments1669–76
12.
Patel Hasmukh S and Lad Babu D1991Chem. Abstr.11594399-94399
13.
[7] Vogel A T1987Practical Organic Chemistry Part III, Qualitative Organic Analysis1st Indian edn (New Delhi: CBS) p 747-747
14.
[8] Shenai V A1973Chemistry of Dyes and Principle of Dyeing (Bombay: Sevak)
15.
[9] Trotmen E R1970Dyeing and Chemical Technology of Textile Fibres4th edn (London: Griffin) p 590-590
