Table of Contents
Journal of Textiles
Volume 2014, Article ID 460794, 8 pages
http://dx.doi.org/10.1155/2014/460794
Research Article

Synthesis of Malononitrile-Condensed Disperse Dyes and Application on Polyester and Nylon Fabrics

1Department of Textile Technology and Fashion Design, College of Science and Technology, Kaduna Polytechnic, PMB 2021, Kaduna, Nigeria
2Department of Textile Science and Technology, Ahmadu Bello University, Zaria, Nigeria
3Department of Applied Science, College of Science and Technology, Kaduna Polytechnic, PMB 2021, Kaduna, Nigeria

Received 1 August 2014; Revised 28 October 2014; Accepted 8 November 2014; Published 8 December 2014

Academic Editor: Gajanan S. Bhat

Copyright © 2014 Yusuf Y. Lams et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

An active methylene compound, malononitrile, was introduced into the structures of a series of disperse dyes previously prepared by coupling phloroglucinol, barbituric acid, and α and β-naphtho to 4-amino-3-nitrobenzaldehyde. The dyes were purified by recrystallization from ethanol. The purity of the dyes was examined by thin-layer chromatography (TLC) and the dyes were characterized by visible absorption and Fourier transform infrared spectroscopy (FTIR). The malononitrile-condensed dyes produced deeper colours and shades with better fastness to wash, light, and perspiration on application to polyester and nylon fabrics when compared to their uncondensed analogue.