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Advancements in Reactive Textile Dyes

Classifications, characteristics, developments, and advancements in Reactive Textile Dyes

The market for reactive dyes will continue to increase. This will arise partly from a marginal increase in the production of cellulosic fibres, essentially cotton, and more importantly from the replacement of other classes of cellulose dye, such as azoic and sulphur dyes, by reactive dyes.

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Classification of Reactive Dyes

Monofunctional Type

The most important reactive system contains an only possible reactive centre, such as the halogen substituent in the aminohalotriaz the dye or the activated terminal carbon atom in vinylsulphone system.3

In the other two equivalent replaceable halogen substituent dichlorotriazine, diflouropyrimidine hetrocyclic ring system. The reactivity of the remaining halogen substituent is greatly decreased by the presence of the new hydroxyl or cellulose substituent.

The different monofunctional reactive dyes are as follows.

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No. REACTIVE DYE BRAND NAME
1 Dichlorotrazine dye Procion MX Zeneca
2 Aminochlorotriazine dye Procion H Zeneca
3 Aminoflurotriazine dye Cibacion CGY
4 Trichloropyridine dye Drimarine X S
5 Dichloroquinoxaline dye Levafix BAY
6 Sulphatoethyl-sulphone dye Ramazol HDE

Bifunctional Type

It is a high value of Cuprammonium fluidity observed for dyeing of many reactive dyes full depths, although tests of tensile strength demonstrated that the cellulose remained undamaged. Investigation showed that these anomalous results were associated with those dye capable of forming cross-links between neighbouring cellulose chains.3

The degree of cross-linking was relatively insignificant for the typical pad-batch dyeing at ambient temperature, but thermal fixation by pad-dry steam method resulted in a much higher proportion of cross-linked dye molecules.

The different bifunctional dyes are as follows.

No REACTIVE DYE BRAND NAME
1 Bis(aminochlorotriazine) Procion HE Zeneca
2 Bis(aminonicotionotriazine) Kayaceton react KYK
3 Aminichlorotriazine-

Sulphatoethyl-sulphone

Sumifix supra NSK
4 Aminiflurotrizine-

Sulphatoethyl-sulphone

Cebracin C CGY
1 Comment
  1. Ana Abdullah says

    A very good post for reactive dye.

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