Reactive Dyes
Reactive Dyes
Reactive Dyes
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History<br />
• Cyanuric chloride reaction with cotton and then amines<br />
• Remazol (vinyl sulphone) chemistry intorduced<br />
• 1956 Rattee + Stephen (ICI) “first” reactive dyes<br />
– chlorotriazines<br />
• Various developments – including new chemical types<br />
• 1980’s Mixed bifunctional dyes (esp. Sumitomo – Sumifix Supra<br />
dyes)<br />
General Features of a <strong>Reactive</strong> Dye<br />
Molecule<br />
W = water solubilising group<br />
D = chromophore<br />
B = bridging group<br />
RG = reactive group<br />
X = leaving group<br />
2
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