Metal complex dyes are also known as pre-metalized dyes shows a great affinity for protein fibres. Commonly it has been seen that metal complex dyes are chromium or cobalt complexes. One of the popular varieties of metal-complex dyes are known as 1:2 metal-complex dyes find application for dyeing polyamide fibres. Metal complex dyes are the most favoured for dyeing wool. In fact, metal complex dyes cannot be said as belonging to a particular application dye class. Generally, metal-complex dyes belong to numerous application classes of dyes.
For instance, they are found among direct, acid, and reactive dyes. When it is applied in the dyeing processes, metal-complex dyes are used in pH conditions that are regulated by user class and the type of fibre such as wool, polyamide, etc. The ranges of pH level for wool are, if it is strongly acidic then it ranges from 1.8 for 1:1 metal-complex dye or if it is moderately acidic neutral then it ranges from 4-7 for 1:2 metal-complex dyes.
Properties of metal complex dyes:
The important properties of metal complex dyes are as follows:
Features of metal complex dyes:
Some of the special features of metal complex dyes are as follows:
Application on different materials:
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