Synthesis of monoazo disperse dyes derived from N -(1-phthalimidyl)-naphthalimides and their dyeing properties on polyester fabrics
Abstract
Purpose
This paper aims to synthesize a novel series of monoazo disperse dyes based on N-(1-phthalimidyl)-naphthalimides by coupling with substitute anilines, naphthylamines and naphthol derivatives.
Design/methodology/approach
The purification of the intermediates and the dyes was carried out by recrystallization. The structures of the synthesized intermediates and the dyes were elucidated by spectroscopic techniques. The absorption maxima, molar extinction coefficient and halochromic properties of the dyes were determined spectrophotometrically using solvents of different polarity.
Findings
The dyes were applied on polyester using a high-temperature high-pressure dyeing machine, and the dyeing performance parameters such as colour build-up on fabrics, wash fastness, perspiration fastness and light fastness were evaluated. The colour build-up was found to be very good and the wash fastness (4–5) and perspiration fastness (4–5) were excellent, whereas the light fastness was found to vary from moderate to very good (3–6).
Research limitations/implications
It is not possible to investigate the structure of the synthesized dyes by nuclear magnetic resonance spectroscopic analysis due to the low solubility of dyes in deuterated solvents.
Originality/value
A novel method for the synthesis of a new category of monoazo disperse dyes based on N-(1-phthalimidyl)-naphthalimides was developed. These dyestuffs could be used in textile printing of polyester fabrics.
Keywords
Acknowledgements
Author contribution: All the authors listed have contributed immensely to the writing and development of this article.
Conflict of interest: The authors have declared that there is no conflict of interest among them.
Since acceptance of this article, the following author has updated their affiliation: Azim Ziyaei Halimehjani is at the Department of Chemistry, Sharif University of Technology, Tehran, Iran.
Citation
Suleiman Pendo, U., Ademola Bello, K., Yakubu, M.K., Giwa, A., Ameuru, U.S., Harifi-Mood, A.R. and Ziyaei Halimehjani, A. (2023), "Synthesis of monoazo disperse dyes derived from
Publisher
:Emerald Publishing Limited
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