An ISO 9001 : 2008 Certified Company
What is Dye
Dye is a natural/synthetic substance that finds
application for adding a color/altering existing color shade. As a coloring
material, dyes are used to color commodities of day to day use and can be
applied everywhere including
- Plastic toys for children
- Fabrics worn
- From products like food
- Wood items
These are hardly any industries left where dyes are not used commercially.
As a coloring substance, dye has an ionizing and aromatic organic compound
that affinity to substrate to which it is being applied. Generally being
applied in aqueous solution, it may need mordant to improve fastness of dye
The support from dyes assists in :-
- Easily manipulating things according to our liking like at basic
level, use color in identifying individual components of tissue sections
- Dyes are applied to substrates like textiles, plastic, paper, food
- These are also completely/partially soluble in which these are put to
What makes Dyes colored ?
Basically ionising & aromatic compounds, dyes have
Chromophores present in them with their structures having Aryl rings that
have de-localized electron systems. These structures are responsible for
absorption of electromagnetic radiation that features varying wavelengths
(as per the energy of electron clouds).
These Chromophores make dyes highly effective in their ability to absorb
radiation. Further, Chromophores also act by making necessary energy changes
in de-localized electron cloud of dye that invariably results in compound
absorbing radiation within visible range of colors (not outside it).
Electrons may result in loss of color with their removal causing rest of
electrons to revert to local orbits. A good example of this is Schiff's
reagent; a sulphurous acid that reacts with Pararosaniline. This leads to
Sulphonic group attaching itself to compound's central carbon atom which
hampers conjugated double bond system of Quinoid ring. It causes electrons
to become localized and as a result ring ceases to be Chromophore, thus
rendering dye colorless.
How can colors of Dyes be altered ?
The colors of dyes can be altered by use of modifiers.
Here, Color modifiers of methyl/ethyl groups are responsible for any
alteration in dyes.
Inkjet Dyes :-
- Reactive Dyes
- Acid Dyes
- Direct Dyes
- Basic Dyes
- Solvent Dyes
Dyes for Wax Printing :-
- Dyes for Water Based Inkjet Inks
- Dyes for Digital Textile Printing
- Pigments for Water Based Inkjet Inks
- Ribagen Dyes
- Ribabase Dyes
- Ribafix Dyes for Printing