| AVCO-LEVELLER ACR is a levelling agent for dyeing poly-acrylic fibres and blends, with cationic (basic) dyestuffs.
SPECIFICATION:
| Appearance |
Clear, colorless liquid. |
| Chemical nature |
Quaternary ammonium compound in aqueous solution. |
| Compatibility |
Compatibility with cationic and nonionic products. Incompatible with anionic products |
| Ionicity |
Cationic. |
| pH (10% sol.) |
7 ± 1 |
| Resistance to: Acids,Alkalis, Electrolytes , Water- hardness |
Good under the conditions normally encountered in acrylic dyeing |
| Solubility |
Miscible with water at any ratio. |
| Storage |
Freezes below O°C, fully useable after thawing. Shelf life is at least 12 months. |
PROPERTIES & USES:
- High levelling power towards cationic dyestuffs.
- Maximum migration.
- Maximum color yield.
- AVCO-LEVELLER ACR does not block dye-sites.
- AVCO-LEVELLER ACR overcomes differences in the dye-affinity caused by variation
in the 1fibers.
APPLICATION:
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Set dye bath at 600C, and add chemicals in the following order:
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a.Acetic Acid to adjust pH at: 4-4.5
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b.Sodium sulphate according to instructions of dyestuff manufacturer.
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c.AVCO-LEVELLER ACR – 0.5-3% o.w.g.
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d.Cationic dyestuff pre-dissolved in hot water with acetic acid or special solvent.
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Bring to the boil at 45-60 minutes, and run for 45-90 minutes, or treat at 106°C for 30–45 minutes.
-
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Softening can be done with AVCOSOFT NE (1-3% o.w.g.), while dyeing, or in the cooling down process or in a separate bath after dyeing.
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Dosage (depends on saturation factor of dyestuffs)
| % dyestuff |
below 0.5 |
0.5 – 1 |
1 – 2 |
2 – 3 |
3 – 5 |
| %AVCO-LEVELLER ACR |
2.5 – 3.0 |
2.0 – 2.5 |
1.5 – 2 |
0.5 – 1.5 |
0.5 |
The concentrations mentioned above should be reduced by 30% for fibres with saturation factor of 1.5 or below.
Correction of un-level dyeing: Treat at the boil or at 105-106°C for 1-2 hours with:
AVCO-LEVELLER ACR3 – 5 %
Sodium Sulphate 1 0 – 20 %
Dye from original recipe 0 – 10 % Adjust pH to 4-4.5 with Acetic Acid.
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