Synthesis of a new series of polyfunctionally substituted pyrazole azo dye systems for dyeing of synthetic and modified cellulose fibers

Abstract

Three series of azo dye systems are considered, namely, 5‐oxo‐2‐pyrazoline azo dye systems 9 a‐d,1‐oxo‐pyrazolo pyrazole azo dye systems 10 a, b, c, e, 11 a, b, c, e, 12 a, b, c, e, 13 a‐d and 6‐oxo‐pyranopyrzole azo dye systems 14 a‐d. The shifts of ultraviolet‐visible absorption maxima affected by the structural configuration of the pyrazole dye systems are investigated. The structural effects of the polyfunctionally substituted pyrazole dye systems on the intensity of colour and fastness properties of the dyed fabrics are also discussed. The data of these studies are listed. Colour shades of the synthesized dyes on nylon and acetate fabrics are indicated.

Citation

Shams, H.Z., Helal, M.H. and Mohamed, F.A. (2001), "Synthesis of a new series of polyfunctionally substituted pyrazole azo dye systems for dyeing of synthetic and modified cellulose fibers", Pigment & Resin Technology, Vol. 30 No. 2, pp. 99-108. https://doi.org/10.1108/03699420110381625