Novel Naphthalimide Based Azo Disperse Dyes for Dyeing of Polyester Fabrics

Authors

1 Center of Excellence for Color Science and Technology,Department of Organic Colorants, Institute for Color Science and Technology

2 Department of Color Physics, Institute for Color Science and Technology

3 Department of Organic Colorants, Institute for Color Science and Technology

4 Department of Polymer Engineering and Color Technology , Amirkabir University of Technology

Abstract

A series of monoazo disperse dyes based on naphthalimide was synthesized using N-alkylcarboxylic acid-1,8-naphthalimide as diazo component and N,N-diethylaniline derivatives as a coupling components. 4-amino-N-ethanoic (propanoic) acid-1,8-naphthalimide was synthesized from 4-nitro-1,8-naphthalic anhydride by imidation and subsequent reduction reactions. These compounds were diazotized and further coupled to substituted N, N-diethylaniline to produce dyes which give red to violet hues on polyester fabrics. The prepared dyes and their corresponding intermediates were characterized by elemental analysis, DSC, FTIR, 1HNMR and UV-Vis spectroscopic techniques. The dyed polyester fabrics showed moderate light fastnesses, very good to excellent washing, rubbing and sublimation fastnesses.

Keywords

Progress in Color, Colorants and Coatings
Volume 4, Issue 1
February 2011
Pages 27-37

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