Product Code : 14
Reactive dyes are a class of highly coloured organic substances, primarily used for tinting textiles, that attach themselvesto 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 byadsorption. 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 beendeveloped for other fibres, but these are not yet practical commercially. The dyes contain a reactive group that, whenapplied to a fibre in a weakly alkaline dyebath, form a chemical bond with the fibre. Reactive dyes can also be used to dyewool 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 thecellulose or protein molecule. Once the bond is formed, what you have is one molecule, as the dye molecule has becomean actual part of the cellulose fiber molecule. No wonder you can safely wash a garment that has been dyed in bright fiberreactive colours with white clothing, a hundred times, without endangering the whites in the least - even if it is all differentbright 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 mostwidespread textile dying process in the world.
Reactive Cold Dyes
FASTNESS PROPERTIES
Light
Washing
Perspiration
Hypochlorite
Dischargeability
Red M5BRed - 2
4-5
3-4
1
P
Red M8BRed - 11
2
4
Magenta MBViolet - 13
5
F
Orange M2RJ
Gol. Yellow MRYellow - 44
Yellow M3RYellow - 36
6
G
Yellow M4ROrange - 14
Yellow M8GYellow - 86
Yellow M4GYellow - 22
Yellow MGRYellow - 7
Violet C4RViolet - 12
3
Violet C2RViolet - 14
Blue MRBlue - 4
Blue M2RBlue - 81
Blue M2R H/CBlue - 81
Navy Blue M3RBlue - 9
Blue M4GD H/CBlue - 168
Reactive ME Dye
Red ME4BLRed - 195
Red ME6BLRed - 196/250
Red ME3BLRed - 180
5-6
Orange ME2RLOrange - 122
G. Yellow MERLYellow - 145
Yellow ME3RL
Yellow ME4GLYellow-160/186
Green ME4GL
Blue ME2RLBlue - 158
Navy Blue ME2GL Blue 194
Blue BFBlue - 221
6-7
Blue BFBlue - 222
Reactive 'HE' Dyes
Discharge ability
Yellow HE6GYellow - 135
Yellow HE4RYellow - 81
1-2
Yellow HE4RYellow - 84
2-3
G. Yellow HE4RYellow - 81-A
Orange HEROrange - 84
Orange HE2ROrange - 84-A
Red HE3BRed - 120
Red HE5B
Red HE7BRed - 141
Red HE8BRed - 152
Green HE 4BGreen - 19
Green HE 4BDGreen - 19A
Black HEBL
Navy Blue HERBlue - 171
Navy Blue HE2RBlue - 172
Blue HERDBlue - 160
Vinyl Sulphone Base Dye
Yellow RTNYellow - 24
G. Yellow RNLG. Yellow - 107
Yellow RYellow - 77
Yellow GLYellow - 37
Black BBlack -5
Black RLBlack - 31
7
Violet 5RViolet - 5
Blue 3RBlue - 28
Blue RBlue - 19
Blue RGBBlue - 250
Blue BBBlue - 220
Dark Blue HRBlue - 89
Navy Blue GGBlue - 203
Navy Blue GGBlue - 203A
-
Brown GRBrown - 18
Reactive Hot Dyes
Gol. Yellow HRYellow - 12
Orange H2ROrange - 13
Red H8BRed - 31
Red 6BXRed - 76
Red Brown H4RBrown - 9
Magenta HBViolet - 13
Purple H3RViolate - 1
Black HNBlack - 8
Blue H5RBlue - 13
Blue H2R
Blue H3RPBlue - 49
Navy Blue RXBlue - 59