A novel synthesis of 1‐oxo‐thieno(3’,2’‐3,4) pyrazolo(1,2‐a) pyrazole azo dye systems for dyeing of synthetic and modified cellulose fibers

A novel synthesis of 1‐oxo‐thieno(3’,2’‐3,4) pyrazolo(1,2‐a) pyrazole azo dye systems... A new series of the title pyrazole azo dye systems has been synthesized. The new dyes are applied on nylon and cellulose acetate fibers to give dyed fabrics with excellent properties of colour intensity and fastness properties. The physical and spectral data of the investigated dyes are illustrated. 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 discussed. The data of these studies are listed. The colour shades of the synthesized dyes on nylon and acetate fabrics are indicated. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Pigment & Resin Technology Emerald Publishing

A novel synthesis of 1‐oxo‐thieno(3’,2’‐3,4) pyrazolo(1,2‐a) pyrazole azo dye systems for dyeing of synthetic and modified cellulose fibers

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Publisher
Emerald Publishing
Copyright
Copyright © 2001 MCB UP Ltd. All rights reserved.
ISSN
0369-9420
DOI
10.1108/03699420110390805
Publisher site
See Article on Publisher Site

Abstract

A new series of the title pyrazole azo dye systems has been synthesized. The new dyes are applied on nylon and cellulose acetate fibers to give dyed fabrics with excellent properties of colour intensity and fastness properties. The physical and spectral data of the investigated dyes are illustrated. 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 discussed. The data of these studies are listed. The colour shades of the synthesized dyes on nylon and acetate fabrics are indicated.

Journal

Pigment & Resin TechnologyEmerald Publishing

Published: Jun 1, 2001

Keywords: Dyes; Fabric; Synthetic fibres

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