There are two reactive groups in Bi functional Dyes.
These two reactive groups are well known for their excellent dyeing
activity. But bifunctional Dyes with excellent dyeing capacity can be only
created through correct selection process of appropriate reactive groups and
appropriate chromophores. A few bifunctional reactive dyes had been
developed which carried mono-chlorotriazine and sulphato ethyl sulphone
reactive.
As Bi functional Dyes contain two reactive groups either identical in
nature or not so these dyes have higher degree of fixation over all other
kinds of dyes.
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Textile Dyes »
Dyes for Cellulose Fibers
» Bi Functional Dyes
| Dyes for Cellulose Fibers | Dyes for Protein Fibers | Dyes for Synthetic Fibers |
| Azoic or Naphthol Dyes | Bi Functional Dyes | Direct Dyes | Reactive Dyes | Sulphur Dyes | Vat Dyes | ||
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Do you know what is Chromophores?Chromophore is a chemical group that is capable to
select light absorption resulting in the coloration of certain organic
compounds. |
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 The
main features of Bi functional Dyes |
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"ME" dyes.....This is a kind of bifunctional dyes. The
fastening property of these dyes is very high and these are low
temperature high exhaust dyes. These dyes also have high perspiration
and light chlorine properties. They also consist high degree of fixation
rate, exhaustion, good levelling capacity and good alkali stability.
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- The stability that is exist in the dye-fiber bond between the Vinyl
sulphone group and cellulose against acid hydrolysis gives extra
stability to these dyes in the acidic environment of the industry and
makes the dyeing effect more lasting.
- The portion of bi functional dyes that doesn't fix during the dyeing
process can be removed easily. This is because of the low substantivity
of the hydrolysis dye. This reduces the risk of staining of the adjacent
whites.
- The leveling properties are also excellent. The reproductivity of
dyeing is also good.
- The fastness quality is also get improved.