Procedure: High Temperature Dyeing of 100% Rayon
- Prepare, rinse and neutralize fabric as required.
- Set bath at 110°F with:
- 1.0 g/l Buffer AC
- 0.5 g/l Sequestering Agent (if needed)
- Run 5 minutes.
- Add KAYACELON REACT dyes (pre-dissolved at 180°F).
- Run 10 minutes.
- And 1/10 total amount sodium sulfate.
- Run 10 minutes.
- Add remaining 9/10 sodium sulfate.
- Check pH (6.5-7.5) and salt concentration.
- Heat to 250°F at 3°F/mlnute.
- Run 15-30 minutes (depending on depth of shade).
- Cool to 170°F. Sample. If shade is acceptable, drop bath.
- Fill and heat to 140°F. Run 10 minutes. Drop bath.
- Fill hot and add:
- x g/l Scouring Agent
- Heat to 200°F. Run 10 minutes. Cool and drop bath.
- Fill and heat to 140°F. Run 10 minutes. Drop bath.
- Rinse until clear. Unload.
|
Sodium Sulfate Table |
||
|
Dye (%)
|
Cotton (g/l)
|
Rayon (g/l)
|
| 0.00-0.15 |
10
|
7
|
| 0.16-0.25 |
15
|
10
|
| 0.26-0.50 |
20
|
15
|
| 0.51-0.75 |
30
|
20
|
| 0.76-1.00 |
40
|
30
|
| 1.01-1.50 |
50
|
35
|
| 1.51-2.00 |
60
|
40
|
| 2.01-2.50 |
70
|
50
|
| 2.51 or over |
80
|
60
|
Buffer AC
Properties
Appearance: White powder
Composition: Special phosphate compound
pH: 6.5 (1.0 g/l aqueous solution with 40 g/l of Glauber's salt)
Solubility: Dissolves easily in water
Characteristics
- A pH of 6.5 is produced in a dyebath containing Glauber's salt.
- Especially useful for one-bath dyeing of acrylic/cotton blends with KAYACELON REACT Reactive Dyes.
Usage
- Add 0.5-1.0 g/l to the dyebath for dyeing with KAYACELON REACT Reactive Dyes.
- Acid neutralization in advance is required if strong alkali is used for pretreatment.