Synthesis and performance studies of novel bisazo reactive dyes on various fibres  

Bhavesh M. Patel¹* and Saurabh K. Patel²  

¹Naran Lala College of Professional and Applied Science, Navsari - 396 450 (India).

²Department of Chemistry, Veer Narmad South Gujarat University, Surat (India).

ABSTRACT:

A demand for novel reactive dyes with improved properties have led to synthesis of cold brand reactive dyes by coupling tetrazotised 4,4’-methylene bis-2,5-dimethoxy aniline with various cyanurated coupling components such as H-acid, Chicago acid, K-acid, J-acid, N-methyl J-acid, N-phenyl J-acid, Gamma acid, N-methyl Gamma acid, Peri acid, N-phenyl peri acid, Tobias acid, Sulpho tobias acid, Laurent acid, Bronner’s acid, Koch acid and their dyeing performance as reactive dyes has been assessed on cotton, wool and silk fibres. The purity of dyes was checked by Thin Layer Chromatography. The IR spectra showed all characteristic bands and 1H NMR spectra of representative dye showed all the expected signals. The percentage dye bath exhaustion on different fibres was good. The dyed fibres showed moderate to very good fastness to light, washing and rubbing.

KEYWORDS:

4,4’-methylene bis-2,5-dimethoxy aniline; Bisazo reactive dyes; Dyeing; Cotton; Wool and Silk

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Copy the following to cite this article: Patel B. M, Patel S. K. Synthesis and performance studies of novel bisazo reactive dyes on various fibres. Orient J Chem 2009;25(4).

Copy the following to cite this URL: Patel B. M, Patel S. K. Synthesis and performance studies of novel bisazo reactive dyes on various fibres. Orient J Chem 2009;25(4). Available from: http://www.orientjchem.org/?p=22699