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Reactive Dyes


 

Reactive dyes are a class of highly coloured organic substances, primarily used for tinting textiles, that attach themselves to their substrates by a chemical reaction that forms a covalent bond between the molecule of dye and that of the fibre. The dyestuff thus becomes a part of the fibre and is much less likely to be removed by washing than are dyestuffs that adhere by adsorption.



The first fibre reactive dyes were designed for cellulose fibres, and they are still used mostly in this way. There are also commercially available fibre reactive dyes for protein and polyamide fibres. In theory, fibre reactive dyes have been developed for other fibres, but these are not yet practical commercially. The dyes contain a reactive group that, when applied to a fibre in a weakly alkaline dyebath, form a chemical bond with the fibre. Reactive dyes can also be used to dye wool and nylon, in the latter case they are applied under weakly acidic conditions.


The most important characteristic of reactive dyes is the formation of covalent bonds with the substrate to be coloured, i.e. the dye forms a chemical bond with cellulose, which is the main component of cotton fibers.



Fiber reactive dyes are the most permanent of all dye types. Unlike other dyes, it actually forms a covalent bond with the cellulose or protein molecule. Once the bond is formed, what you have is one molecule, as the dye molecule has become an actual part of the cellulose fiber molecule. No wonder you can safely wash a garment that has been dyed in bright fiber reactive colours with white clothing, a hundred times, without endangering the whites in the least - even if it is all different bright colours, or even solid black! In contrast to all other dyes the reactive dyes bind chemically to the textile fibres, significantly improving the product's colour stability and washability. Thus reactive dying of cotton is currently the most widespread textile dying process in the world.


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Reactive Cold Dyes



Reactive dyes are a class of highly coloured organic substances, primarily used for tinting textiles, that attach themselves to their substrates by a chemical reaction that forms a covalent bond between the molecule of dye and that of the fibre. The dyestuff thus becomes a part of the fibre and is much less likely to be removed by washing than are dyestuffs that adhere by adsorption.


The first fibre reactive dyes were designed for cellulose fibres, and they are still used mostly in this way. There are also commercially available fibre reactive dyes for protein and polyamide fibres. In theory, fibre reactive dyes have been developed for other fibres, but these are not yet practical commercially. The dyes contain a reactive group that, when applied to a fibre in a weakly alkaline dyebath, form a chemical bond with the fibre. Reactive dyes can also be used to dye wool and nylon, in the latter case they are applied under weakly acidic conditions.


The most important characteristic of reactive dyes is the formation of covalent bonds with the substrate to be coloured, i.e. the dye forms a chemical bond with cellulose, which is the main component of cotton fibers.


Fiber reactive dyes are the most permanent of all dye types. Unlike other dyes, it actually forms a covalent bond with the cellulose or protein molecule. Once the bond is formed, what you have is one molecule, as the dye molecule has become an actual part of the cellulose fiber molecule. No wonder you can safely wash a garment that has been dyed in bright fiber reactive colours with white clothing, a hundred times, without endangering the whites in the least - even if it is all different bright colours, or even solid black! In contrast to all other dyes the reactive dyes bind chemically to the textile fibres, significantly improving the product's colour stability and washability. Thus reactive dying of cotton is currently the most widespread textile dying process in the world.

Reactive Cold DyesFASTNESS PROPERTIES
LightWashingPerspirationHypochloriteDischargeability
Reactive Red M5B
Reactive Red - 2
 4-54-53-41P
Reactive Red M8B
Reactive Red - 11
 4-54-524P
Reactive Magenta MB
Reactive Violet - 13
 4-554-51F
Reactive Orange M2R
Reactive Orange - 4
 5544P
Reactive Orange M2RJ
 
 3-4444-5P
Reactive Gol. Yellow MR
Reactive Yellow - 44
 54-541P
Reactive Yellow MR EX H/C
Reactive Yellow - 44
 54-541P
Reactive Yellow M3R
Reactive Yellow - 36
 6542G
Reactive Yellow M4R
Reactive Orange - 14
 54-541P
Reactive Yellow M8G
Reactive Yellow - 86
 64-54-51G
Reactive Yellow M4G
Reactive Yellow - 22
 6451G
Reactive Yellow MGR
Reactive Yellow - 7
 654-54-5P
Reactive Violet C4R
Reactive Violet - 12
 4341P
Reactive Violet C2R
Reactive Violet - 14
 3-4341P
Reactive Blue MR
Reactive Blue - 4
 6552P
Reactive Blue M2R
Reactive Blue - 81
 654-51P
Reactive Blue M2R H/C
Reactive Blue - 81
 654-51P
Reactive Navy Blue M3R
Reactive Blue - 9
 54-533P
Reactive Blue M4GD H/C
Reactive Blue - 168
 653-42P
Reactive Tur. Blue MGN
Reactive Blue - 140
 6442-3P
Reactive Tur. Blue Ha5G
Reactive Blue - 71
 63-44-53-4P

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Reactive HE Dyes



The reactive dyes provided by us impart excellent chemical properties and are manufactured by incorporating many technologies. These are available in undermentioned shades, chemical compositions and specifications.

Reactive 'HE' DyesFASTNESS PROPERTIES
LightWashingPerspirationHypochloriteDischargeability
Reactive Yellow HE6G
Reactive Yellow - 135
 4-5441G
Reactive Yellow HE4R
Reactive Yellow - 81
 5-654-51-2G
Reactive Yellow HE4R
Reactive Yellow - 84
 5-654-52-3P
Reactive G. Yellow HE4R
Reactive Yellow - 81-A
 554-53-4P
Reactive Orange HER
Reactive Orange - 84
 3-4444-5P
Reactive Orange HE2R
Reactive Orange - 84-A
 3-4444-5P
Reactive Red HE3B
Reactive Red - 120
 554-51P
Reactive Red HE5B
 
 4-5553P
Reactive Red HE7B
Reactive Red - 141
 4-5553P
Reactive Red HE8B
Reactive Red - 152
 4-5553-4P
Reactive Green HE 4B
Reactive Green - 19
 44-54-51F
Reactive Green HE 4BD
Reactive Green - 19A
 454-51F
Reactive Black HEBL
 
 4543P
Reactive Navy Blue HER
Reactive Blue - 171
 4541-2F
Reactive Navy Blue HE2R
Reactive Blue - 172
 44-542F
Reactive Blue HERD
Reactive Blue - 160
 6543F
Reactive Navy Blue HEGN
Reactive Blue - 198
 4-54-53-43F

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