Title: Basic Dyes: Advantages & Applications
1Basic Dyes
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2Introduction
Basic dyes are called so since they are salts
organic bases. Basic dyes manufacturers in India.
Basic dyes are called cationic dyes because in
solution basic dye molecule ionizes, causing its
colored component to become an action of
positively charged radical. Basic dyes are used
for dyeing wool, silk and acrylic and mod-acrylic
fibers.
3Properties of Basic Dyes
- Iconic Nature Cationic
- Shade Range Unlimited shade range with high
tinctoral value, brightness - Solubility Soluble in Water
- Leveling Properties Poor Leveling
- Affinity Very affinity towards wool, silk and
acrylic fibre - Fastness Properties Light fastness is poor but
wet fastness is good - Exhaustion Cationic dyes have a varied rate of
exhaustion - Reactivity Basic side of the isoelectric points
- Application on Cotton Fabric Basic colours are
not employed on cotton
4Limitations of Basic Dyes
- Poor shade stability
- High acid content
- Colored backwaters
- Very poor light fastness
5Advantages of Basic Dyes
- Moderate substantively.
- Relatively economical
- Shows good brightness
- High Tinctorial strength
- Wide shade range
- Includes some of the most brilliant synthetic
dyes.
6Applications of Basic Dyes
- Textile Industry Textile industry for dyeing
wool, silk, and nylon fibers - Paper Industry Paper industry to color paper and
paper products - Leather Industry Penetrate deeply into the
leather, providing long-lasting and rich colors - Ink Industry Especially in the production of
colored inks for writing, printing, and artistic
applications - Biological Staining Biological laboratories for
staining cells and tissues - Plastics Color plastics, including acrylics and
modified polyesters - Cosmetics Cosmetics and personal care products
to provide coloration
7Chemical Structure of Basic Dyes
Basic dyes are characterized by their chemical
structure, which typically includes a chromophore
group (responsible for color) and a basic group
(positively charged, which allows them to bind to
negatively charged substrates like fibers).
Here's a general structure and explanation
H N--CH2--Ar--N(CH3)2 CH3
8Thank you
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Mumbai 400056, Maharashtra India.
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