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Synthetic Dyes - Coggle Diagram
Synthetic Dyes
Acidic dyes
Acidic environment
High affinity for protein fibers
Dyeing of protein fibers
Good light fastness
Good wash fastness
Water soluble
Class of synthetic dyes
Reactive dyes )
Also known as fiber reactive group
Poor fastness to chlorine bleach
Soluble in water
Simple dyeing method
Wide color range
Excellent cotton wash fastness
Vat dyes
Used for cellulosic fibers
Can't be directly applied on textile material
Water in-soluble dyes
Dyeing process is difficult
Dyeing is carried on alkaline medium
Basic dyes
Strong affinity for acrylic fibers
Water soluble
Cationic dyes
Good washing fastness
Used for leather dyeing
Sulphur dyes
Applicable to cellulosic material
Presence of Sulphur atom in their molecules
Water in-soluble dyes
Good light and washing fastness
Direct dyes
Water soluble
Known as substantive dyes
Easily diffusible in fiber
Cheap in price
Good substantivity for cotton fabric
Anionic in nature
Disperse dyes
Used for man made synthetic fibers
In-soluble in water
No discoloration
Ease of removel
Non-ionic dyes
Hydrophobic fibers