Properties of reactive dye

Properties of reactive dye:

1)    Reactive dyes are cationic dyes, which are used for dyeing cellulose, protein and polyamide fibres.

2)    Reactive dyes are found in power, liquid and print paste form.

3)    During dyeing the reactive group of this dye forms covalent bond with fibre polymer and becomes an integral parts of the fibre.

4)    Reactive dyes are soluble in water.

5)    They have very good light fastness with rating about 6. The dyes have very stable electron arrangement and can protect the degrading effect of ultra-violet ray.

6)    Textile materials dyed with reactive dyes have very good wash fastness with rating about 4-5 due to strong covalent bonds formed between fibre polymer and reactive group of dye.

7)    Reactive dye gives brighter shades and has moderate rubbing fastness.

8)    Dyeing method of reactive dyes is easy. It requires less time and low temperature for dyeing.

9)    Reactive dyes are comparatively cheap

10)                    Reactive dyes have good perspiration fastness with rating 4-5.

11)                    Reactive dyes have good perspiration fastness.