Reactive dyes are a type of dyes that react chemically with fibers during dyeing. This type of dye molecule contains a group that can chemically react with the fiber. During dyeing, the dye reacts with the fiber and forms a covalent bond between the two to form a whole, which improves the fastness to washing and rubbing. Reactive dyes are a new type of dyes. In 1956, the United Kingdom first produced Procion brand reactive dyes. The reactive dye molecule includes two main components: the parent dye and the reactive group. The group that can react with the fiber is called the reactive group.
Uses and characteristics of reactive dyes
Reactive dyes are composed of parent dyes, linking groups and active groups, which enable them to form a firm covalent bond with fibers during use, and have a series of incomparable characteristics with other cellulose fiber dyes, establishing their use as fibers. The key status of the development and use of dyestuffs for plain fibers is prominently manifested in the following four aspects:
- Reactive dyes can use economical dyeing technology and simple dyeing operations to obtain high levels of various fastness properties, especially wet fastness.
- Reactive dyes are one of the best choices to replace forbidden dyes and other types of cellulose dyes such as sulfur dyes, ice dyes and vat dyes.
- Reactive dyes are suitable for the printing and dyeing of new fiber products.
- Reactive dyes have wide chromatograms, bright colors, excellent performance, and strong applicability. Their hue and performance are basically in line with the market's requirements for fibers and clothing.
The main application field of reactive dyes is the textile industry, and its various characteristics are extremely widely used in the coloring process of fabrics. Of course, as a kind of chemical dyes, reactive dyes also have certain skills in their use methods. Not any blind use can achieve good results; therefore, it is very necessary to understand its use skills before use, so as to achieve Better use effect.