Fluorescent Whitening Agent VBA(FBA 210)
Properties: Fluorescent Whitening Agent VBA has very good water solubility. Its water solution is anionic and has a blue fluorescence. This whitening agent can be used in a bath together with almost all auxiliaries other than cationic surfactant and cationic dyes, and has very good whitening effect on cotton fabric even under strong alkalic or acidic conditions.
Bath formula (for reference):
Formula A (one -bath process):
Scouring agent |
2g/l |
Penetrant |
2g/l |
Stabilizer |
2g/l |
Caustic soda(100%) |
6g/l |
H2O2 |
12g/l |
Whitening agent VBA |
0.3% (O.W.F.) |
(Bath ratio:1:15; boil out the goods being whitened at 95~98℃ for 60minutes, then rinse and dry it.)
Formula B (used together with resin in padding bath):
Resin 2D |
64g/l |
Whitening Agent VBA |
3g/l |
Citric acid 10% |
5mg/l |
Penetrate and softener some |
3g/l |
Catalyst |
6g/l |
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(Dip twice and pad twice; adjust the PH value to 5~6; dry the whitened goods at 80~100℃, cure it at 140~180℃, then open-wash it for 20~30 seconds and dry it again.)
Specifications:
Item |
Indices |
Appearance |
light yellow even-sized powder |
Whitening intensity |
equivalent to the 100 points of the standard agent |
Hue |
slightly different to the standard agent |
WCIE(whiteness difference between VBA and the standard agent) |
≥-3.0 |
Moisture content |
≤5% |
Content of insoluble impurities |
≤0.5% |
Fineness (quantity of residue on sieve having 180um meshes) |
≤10% |
Packaging and storing : Packaged in cardboard barrels, 25kg or 50kg each. Stored in cool and dry place.
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