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Two Types of Metal Complex Dyes
Metal Complex Dyes are pre-metallized dyes that ultimately show the great affinity of protein fibers. This involves one or two dye molecules that are coordinated as the metal ion. Dye molecules are typically the monoazo structure that contains additional groups like hydroxyl, amino or carboxyl that are highly capable of forming the strong coordination complexes based on the transition of metal ions like chromium, copper, cobalt, and nickel.
Types of Metal Complex Dyes:
Metal copmplex dyes are classified as 2 classes called as 1:1 metal-complexes and 1:2 metal complexes. For the 1:1 metal-complexes, dye molecule is co-ordinated using the single metal atom. For the 1:2 metal-complexes, single metal are co-ordinated using the double dye molecules.
Dye molecules also have the strong co-ordination complexes that have transition of the metal ions. In fact, it also has transition metal ions such as Nickel, Chromium, Copper and Cobalt. Metal complex dyes do not have the phthalocyanine dyes. It is convenient to enable the light-fastness and excellent features. Medium washing fastness is enabled in the process which is quite efficient option to enable high end option. It also shows good level of penetration and dyeing characteristics.
Metal complex dyes are highly suitable for dyeing wool with enabling more benefits in short time. These do not belong to particular application dye class as there are various aspects involved in the process. Metal complex dyes processes are used in the pH conditions regulated using the type and class of fiber type called as wool, polyamide and more. This is widely used in various applications for the dyeing polyamide fibers.
