Reactive Dyes
Reactive Dyes
Reactive Dyes
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Scouring<br />
Essentially cleaning!<br />
removal of waxes, fatty acids etc.<br />
Scoured<br />
Exhaustion<br />
Unscoured<br />
Time<br />
Definition of scour: To remove natural impurities, dirt or grease<br />
from (cloth or fibers) by means of a detergent.<br />
Factors Influencing the Performance<br />
of <strong>Reactive</strong> <strong>Dyes</strong><br />
• Application conditions<br />
– Quality of the water employed<br />
– Temperature programme employed<br />
– pH programme employed (incl type + conc of alkali)<br />
– Electrolyte programme employed<br />
– Any other additives/chemicals present (eg. Auxiliaries)<br />
– Liquor to materials ratio (LR)<br />
– Chemical (incl Dye) addition programme employed<br />
– Agitation / liquor circulation method<br />
– Time – at each stage<br />
[Rinse/Wash/After treatment conditions are also important]<br />
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