dyes are applied on natural fibers ans textiles like cotton and rayon.
Such kind of dye comes in vibrant colors and has great fastness
properties. These dyes are applied through a number of methods, from
printing, exhaust, continuous to package and jet dyeing. Reactive dyes
according to chemical constitution can be classified into MCT, VS, HHC,
MCT-VS; whereas according to application methods to temperature can be
classified into cold brand, medium brand and low brand. The Reactive
'HE' highly exhausted series dyes are provided in many shapes of yellow,
orange, red, and blue. Many dyers prefer this kind of dye over any
other type because of its washfastness properties. But, reactive dyes
take longer cycle time in the dyeing procedure.
How this dye works?
This dye makes co-valent bond with fibers and becomes it's part.
Reactive dye+fiber=dyed fiber
dyers during dyeing the yarns ans textiles consider factors like pH,
temperature time, electrolyte concentration and liquor ratio.
- Reactive 'HE' highly exhausted dyes are soluble in water.
- These dyes have anionic nature as well as light and wash fastness properties.
- For dyeing, alkaline condition is created.
- When fibre and dye mix in water, strong co-valent bond is forms.