Such type of dyes is suitable for cellulosic materials and dyeing cotton. This type of dyes possesses significantly higher fixation and exhaustion efficiency, which results in high reduction in cost, when compared to conventional reactive dyes. Good build up and high fixation is of particular importance when dyeing cellulosic blends/polyester. The exhaustion of these dyes can be controlled with specific temperature and salt addition in order to give level dyeing, before Alkali is added.
Following are some of the useful features of these dyes:-
- They are widely used on piece material, yarn, garments and loose stock.
- Possesses high fixation, which is of great significance for dyeing cellulosic blend when liquor/polyester/good ratio is quite high.
- Offers excellent reproducibility and wide choice of equipment to suit specific particular application.
- Have excellent build-up both in high and low liquor: goods ratio.
- They are applicable at 80oC.
Re. Yellow HE6G* | Re. Yellow 135 | H | 70 | G | 4 | 5 | 4 | 4-5 | 3 | + | (+) | - | - | - | |
5 | |||||||||||||||
Re. Yellow HE4G | Re. Yellow 105 | H | 100 | F | 4 | 5 | 4 | 4-5 | 2 | + | (+) | - | - | - | |
5 | |||||||||||||||
Re. Yellow HE4R* | Re. Yellow 84 | H | 100 | G | 5 | 5 | 4-5 | 4-5 | 2-3 | + | + | - | - | - | |
5-6 | |||||||||||||||
Re. Golden Yellow HER | Re. Yellow 84 A | H | 100 | F | 5 | 5 | 4 | 4 | 3 | + | (+) | - | - | - | |
6 | |||||||||||||||
Re. Orange HER | Re. Orange 84 | H | 80 | P | 3-4 | 5 | 4 | 3 | 3 | + | - | - | - | - | |
4-5 | |||||||||||||||
Re. Orange HE2R | Re. Orange 94 | H | 60 | F | 3 | 4 | 4 | 4 | 4-5 | + | + | - | - | - | |
3-4 | |||||||||||||||
Re. Red HE3B | Re. Red 120 | H | 90 | P | 4 | 5 | 4-5 | 4 | 1-2 | + | - | - | - | - | |
5 | |||||||||||||||
Re. Red HE7B* | Re. Red 141 | H | 100 | P | 3-4 | 4 | 4-5 | 4 | 3 | + | (+) | - | - | - | |
4-5 | |||||||||||||||
Re. Red HE8B | Re. Red 152 | H | 80 | P | 3-4 | 4 | 4 | 4-5 | 2 | (+) | - | - | - | - | |
4-5 | |||||||||||||||
Re. Green HE4BD | Re. Green 19 | H | 100 | F | 4 | 4-5 | 4 | 4 | 2 | + | + | - | - | - | |
5 | |||||||||||||||
Re. Blue HERD | Re. Blue 160 | H | 90 | F | 5 | 5 | 5 | 5 | 1 | + | (+) | - | - | - | |
6 | |||||||||||||||
Re. Navy Blue HER* | Re. Blue 171 | H | 100 | F | 4 | 4-5 | 5 | 4-5 | 3 | + | (+) | - | - | - | |
5 | |||||||||||||||
Re. Navy Blue HE2R | Re. Blue 172 | H | 70 | F | 5 | 4 | 4 | 5 | 2 | + | + | - | - | - | |
6 | |||||||||||||||
Re. Turquoise Blue HA | Re. Blue 71 | M | 100 | G | 5 | 4 | 5 | 5 | 3 | + | (+) | - | - | - | |
6 | |||||||||||||||
Re. Black HEBL | Re. Black 160 | H | 80 | F | 4 | 4 | 5 | 4 | 3 | + | (+) | - | - | - | |
*Also available in salt free variants.
Key to Abbreviations : |
||||||
Affinity / Substantivity on Cotton | Dischargeability : | |||||
L : | Low | G : | Good | + | Suitable | |
M : | Medium | M : | Medium | (+) | Fairly Suitable | |
H : | High | F : | Fair | – | Not suitable | |
VH : | Very High | P : | Poor |
Fastness Properties: 1 to 8 in increasing order