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| Product Name：OBA VBL(C.I.85) |
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Product Describe： Main chemical composition: Stilbene derivative
Specification:
Structural formula : C38H38N12O8S2Na2
CAS NO.: 12224-06-5
Appearance: slight yellow granular
Fluorescent color: similar to the standard sample
Whitening strength: 100±3(compared with standard sample)
Moisture: ≤5%
Fineness(80 mesh residue): ≤5%
Property:
1. with bluish violet color
2. soluble in soft water as much as 80 times weight,300ppm in hard water
3. anionic type, alkali endurable,can be used in one bath of anionic and nonionic surfactant.
4. to be unendurable ion of copper and iron,etc. unsuitable to be used in cationic dyestuff and surfactant.
Application:
1. whitening agent for cellulose base fiber and cotton fabric.
2. whitening agent for white pattern in discharge printing of cotton fabric.
3. whitening agent for light colored cellulose base fiber.
Treating process:
1. exhaust process:
VBL :0.05-0.3%(o.w.f.), bath ratio:1:5-30, dyeing temperature: 40℃-100℃;
Na2SO4: 0-10g/l ,start temperature:30℃, heating rate: 1-2℃/min,keep the temperature at 50-100℃ for 20-40 min, then lower to 50-30℃→wash→dry(100℃)→setting(120℃-150℃)×1-2min(add proper amount leveling agent according to the leveling effect).
2. Padding Process:
VBL: 0.5-3g/l, residue liquor ratio: 100%, one dip and nip→dry(100℃)→setting(120℃-150℃)×1-2min
Packing: As per customer’s requirements |
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