Dyes-Alfa Chemistry

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DYES
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Dyes
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Soluble in water
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Acid Dyes
Acid Dyes The attachment to the fibers is at
least partially due to salt formation between the
anionic groups in the dye and the cationic groups
in the fibers.
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Azoic Dyes
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Basic Dyes
Acrylic fibers
Wool
Paper
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Disperse Dyes
Disperse Dyes
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Disperse Dyes
Structure
Bond
Use
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Sulfur Dyes
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Vat Dyes
Insoluble
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Coupler
Coupler
Coupler
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Direct Dyes
Direct Dyes
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05
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• Direct or substantive dyeing is normally carried
  out in a neutral or slightly alkaline dye bath,
  at or near boiling point, with the addition of
  either sodium chloride or sodium sulfate or
  sodium carbonate.

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04
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Neutral Dyes
Vinylon
Nylon
Neutral Dyes
Silk
Wool
Tussah silk
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Pigments
Pigments
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Solvent Dyes
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