Rung International Mumbai, Maharashtra

Reactive Dyes

Reactive Dyes

Reactive Dyes

Reactive Dyes offered by us form covalent bonding between dye and fiber and contain reactive group that is often trichlorotriazine (either halo heterocycle/activated double bond) which when applied to fibre in alkaline dye bath helps in forming chemical bond with hydroxyl group on cellulosic fibre. In reactive dyes, chromophore contains substituent which is activated and allowed to react directly to surface of substrate. 

Being the most important method for meeting the coloration needs of cellulosic fibres, these dyes can also be applied on:
While applying on nylon, these are applied under weakly acidic conditions. Having low utilization degree in comparison to other types of dyestuff, reactive dyes also bonds to water, creating hydrolysis.

Reactive dyes are categorized by functional group:
FunctionsFixationTemperatureIncluded in Brands
MonochlorotriazineHalo heterocycle80°Basilen E & P Cibacron Procion H, HE
Monofluoro ChlorotriazineHalo heterocycle40°Cibacron F & C
DichlorotriazineHalo heterocycle30°Basilen MProcion MX
Difluoro ChloropyrimidineHalo heterocycle40°Levafix Drimarene K & R
DichloroquinoxalineHalo heterocycle40°Levafix E
TrichloropyrimidineHalo heterocycle80-98°Drimarene X & Z Cibacron
Vinyl sulfoneactivated double bond40°Remazol
Vinyl amideactivated double bond40°Remazol

Advantages of Reactive Dyes:
Dyeing cycle and Important factors/phases in Reactive Dyeing:

Types of Reactive Dyes:
Bi-functional Dyes:
The dyestuffs that contain two groups are known as bi-functional dyestuffs. Here, reactive dyes are constituted in a way to have capacity to react with fibre in more than single way.

Vinyl Sulphone Dyes (VS):
These dyes are moderately reactive and have dyeing temperature of generally 600C and pH of 11.5. These are applied by utilizing mixture of soda ash and caustic soda and show excellent fixation properties under proper alkaline conditions. 

Monochlorotriazine Dyes (MCT):
These are less reactive than vinyl sulphone dyes where reaction takes place in conditions that are more energetic like conditions of typically 800 degree C and pH value of 10.5, which is essential for achieving proper fixation on cellulosic fibres.
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    Bhavesh Mehta

    (Proprietor)

    Rung International

    Malad West, Mumbai, Maharashtra, India

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