Synthesis and application of novel reactive dyes based on Dimedone moiety

Abstract

The aim of this study is synthesising, characterizing and finding out properties of some new bifunctional dye Bis (monochlorotriazine) (MCT) and heterobifunctional (monochlorotriazine / sulphatoethylsulphone) (MCT/SES) reactive dyes using Dimedone moiety (5,5-Dimethylcyclohexane-1,3-dione) to enhance favorable properties such as, color strength and light fastness. The first dye A was prepared then coupled with diazonium salts having the reactive groups. But the second dye B was synthesiezed of Dimedone moiety (2-amino4,4-dimethy,3-cyano,6-oxo-beno[b] thiophene) after that we diazotized and coupled it with 1-amino-8-naphthol-3,6-disulphonic acid (H-acid) to produce mono azo intermediate. This product was reacted with 2,4,6-trichloro-1,3,5-triazine in 1:1 molar ratio via The aim of this study is synthesising, characterizing and finding out properties of some new bifunctional dye Bis (monochlorotriazine) (MCT) and heterobifunctional (monochlorotriazine / sulphatoethylsulphone) (MCT/SES) reactive dyes using Dimedone moiety (5,5-Dimethylcyclohexane-1,3-dione) to enhance favorable properties such as, color strength and light fastness. The first dye A was prepared then coupled with diazonium salts having the reactive groups. But the second dye B was synthesiezed of Dimedone moiety (2-amino4,4-dimethy,3-cyano,6-oxo-beno[b] thiophene) after that we diazotized and coupled it with 1-amino-8-naphthol-3,6disulphonic acid (H-acid) to produce mono azo intermediate. By reacting this product with 2,4,6-trichloro-1,3,5-triazine with 1:1 molar ratio via nucleophilic displacement with 1,4-phenylenediamine in 2:1 molar ratio to produce bis monochlorotriazine reactive dyes thus yielding the new reactive dye. These two dyes were applied onto fabrics of silk, cotton and wool under the optimum conditions of the dyeing exhaust, then the dyeing properties were examined. The results indicate quality of the highest dyeing properties. However, the homobifunctional (bis MCT) dyes showed higher values of exhaustion and fixation, fastness properties and color yield than heterobifunctional (MCT/SES).

Antibacterial Azo Dyes Containing Sulfa Drug Moieties and Their Colour Assessment on Printing Polyester Fabric

“…[6] For colouring of hydrophobic fabrics [7,8] such as nylon (polyamide) fabrics, a broad range of dyes is commercially available, dyes with metal complex and reactive dyes being widely employed. [9] Demand dyes should have brilliance, a wide spectrum of colours, and outstanding fastness qualities, in addition to their environmental and economic advantages. [10][11][12][13] Textile printing is the process of adding colour to quantities of fabrics to generate artistic designs, Dyes or pigments can be used to colour fibers.…”

Removal of Anthraquinone Dyes from Aqueous Solutions Using Activated Carbon Fiber Prepared from Polyacrylonitrile Waste

“…Moreover, they are not readily removed by typical wastewater treatment processes due to their fused aromatic structures which remain colored for long periods of time. Therefore, the process of decolorization of anthraquinone dyes has received much attention [25][26][27][28][29][30][31][32][33][34][35]. Due to its alternate supply, low cost, and superior adsorption efficiency, activated carbons are the most often used adsorbent in industrial wastewater treatment.…”

Optimization of Enzymatic Treatment and Reactive Dyeing of viscose fabric in One-bath Process

“…However, the large water consumption makes this process particularly not attractive on ecological grounds. In order to achieve effective production process, the fabric requires separately pretreatment bath to fabric has satisfactory levels of wetability, swelling and reduction of fibrillation tendency, which in turn, lead to a better dye uptake and increase the forces of dye-fiber interactions [11][12][13][14][15][16]. Moreover, several attempts have been made to sho exhaust two-bath processes of pretreatment and dyeing viscose into one-bath process.…”