Structure—wet fastness relationships of some blue disperse dyes for polyester

Abstract

A range of monoazo blue disperse dyes has been synthesised by coupling benzenoid and heterocyclic diazo components to aniline derivatives containing ester functions. The colour properties and wet fastness of the dyes on polyester at 1/1 standard depth have been examined and rationalised in terms of dye structure. Styryl dyes have also been prepared in order to compare their wet fastness properties to those of the azo dyes.

Synthesis and Antibacterial Activity of Some New Azo Disperse Dyes Containing Selenium and their Application in Polyester Printing

“…The color strength (K/S value) was assessed using Kubelka-Munk equation. (1) [12] To a well stirred solution of malononitrile (0. 2 g, 3 mmol) in DMSO (2 mL), SeO 2 (0.67 gm, 6 mmol) was added.…”

“…Azo chromophores dye based on heterocyclic system has witnessed large invention in recent years [1]. Due to their excellent properties homocyclic azo dyes are an essential class for polyester fabric and also in non-textile application, such as medicine, photodynamic therapy, laser, and non-linear optical systems [2].…”

Dyeing with Disperse Dyes

“…During the 1990s, the development of novel wash test procedures has continued in order to counter perceived changes in the market such as innovations in detergent formulation. The appearance of a new generation of protocols like BS 1006 UK-TO and ISO 105:C08 is a sign that fastness criteria will keep evolving and so present fresh challenges to which disperse dye technology must respond (Choi et al, 2000). A range of test has been devised to simulate the action of various other wet agencies including perspiration.…”

Effect of Dyeing Temperature on the Shrinkage and Fastness Properties of Polyester/Acrylic Fabric

“…Dyeing of polyester/acrylic blended woven fabrics is done by two different types of dyestuff namely basic (cationic) dyes for acrylic yarns and disperse dyes for polyester yarns in conventional two bath method. Disperse dyes give excellent overall fastness properties with polyester whereas basic dyes are water soluble cationic dyes where the coloured part has a positive charge, interacts with the negative group (either carboxyl or sulfonic acid group) of the fibre molecule (Choi et al, 2000).…”