Dyes-Alfa Chemistry - PowerPoint PPT Presentation
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Dyes-Alfa Chemistry
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Dyes are colored organic compounds that can dye fibers or other substrates to a certain color. They can be divided into the following categories: Acid Dyes, Azoic Dyes, Basic Dyes, Direct Dyes, Cationic Dyes, Disperse Dyes, Neutral Dyes, Pigments, Reactive Dyes, Solvent Dyes and so on. Please visit for more information. – PowerPoint PPT presentation
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Title: 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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