Dyes

Introduction

Dyes are chemical substances widely used in textiles, printing, paints, cosmetics and other fields. They play an important role in industrial production and family daily life. Dyes can improve the color quality of products, enhance the service life of products, and can also be used for marking, warning, identification, etc. Among them, organic fluorides are widely used in dyes due to the strong electron-withdrawing properties and easy-leaving characteristics of fluorine atoms, which can improve the fixation rate and fastness of dyes. In addition, organic fluorides with simple structures can also be used to further prepare fluorine-containing dyes.

Applications Of Organic Fluorides In Dyes

Some organic fluorides can be used as important dye molecules for various acid dyes, azoic dyes, reactive dyes and organic pigments. They contain fluorine-containing active groups, which can enhance the gloss and brightness of the dyes, and improve their resistance to light, water and organic solvents. In addition, organic fluorides are also widely used in the preparation of dyes. For example, Zhang et al. synthesized two series of fluorine-containing azo dyes through the hexafluoroisopropylidenebis-(4-hydroxybenzene) (B) or 4,4'-(hexafluoroisopropylidene)diphthalicimidine (C). As the figure 1 displayed, the fluorine-containing azo dyes 3 were synthesized from etherification of B by compounds azoaryl esters 2. Similarly, the fluorine-containing derivatives 4 were synthesized by nucleophilic substitution of compounds 2 with C in an alkaline solution^[1].

Fig.1 Synthesis of fluorine-containing azo dyes

Alfa Chemistry can provide organic fluorides, which are widely used in various dyes such as acid dyes, azoic dyes, reactive dyes and organic pigments. We will offer the most suitable organic fluorides according to customer's detailed requirements. At the same time, we also offer product customization. Alfa Chemistry provides you with the most professional services and the most favorable prices to buy organic fluorides. Please don't hesitate to contact us.

Reference

1. Zhang, C. Z.; et al. Azo dyes of hexafluoroisopropylidene derivatives: Synthesis and nonlinear optical properties. Dyes Pigments. 2008, 76(3): 765-774.