The Open Textile Journal

2010, 3 : 22-26
Published online 2010 October 11. DOI: 10.2174/1876520301003010022
Publisher ID: TOTEXTILEJ-3-22

Colorimetric Study on the Application of Some Fluorescent Naphthalimide Derivatives

P. Miladinova and T. Konstantinova
Organic Synthesis department, University of Chemical Technology & Metallurgy, 8 Ohridski str., Sofia 1756, Bulgaria.

ABSTRACT

Coloration of polyamide fabrics with five dyes naphthalimide derivatives was investigated. Three compounds, containing a tetramethylpiperidine (TMP) fragment were applied as fluorescent whitening agents (FWA). Materials with a bright color or whiteness and an intense fluorescence were obtained. The color characteristics using a Tristimulous colorimetry were recorded. The photo stability of the compounds in solution and on the polyamide fabrics was studied. It was found that among the dyes the compound 5 had the best photo stability. The FWA compounds, containing a stabilizer fragment in their molecule, had excellent stability in solution and very good stability on polyamide material.

Keywords:

Naphthalimide dyes, fluorescent whitening agents, dyeing and whitening of polyamide, photo stability.