Fluorescing whitening agents WH-A
Chemical name: Stilbene derivative
Structural formula:
Specification:
Appearance: brown liquid
Fluorescent Color: Slight red
Whitening strength: 100±3(compared with standard sample)
PH value: 9.0-10.0
Ionic character: anionic
Treating process:
1. Exhausting whitening process:
WH-A: 0.05-0.8% (o.w.f),
bath ratio: 1:30,
dyeing temperature: 40°C-100°C;
Na2SO4: 0-10g/l.,
start temperature: 30°C,
heating rate: 1-2°C/min,
keep the temperature at 50-100 for 20-40min, then lower to 50-30°C →
wash → dry(100°C) → setting(120°C-150°C)×1-2min(add proper amount leveling agent
according to the leveling effect).
2. Padding Process:
WH-A: 0.5-5g/l,
residue liquor ratio: 100%,
one dip and nip → dry(100°C) → setting(120°C-150°C)×1-2min
Use: Mainly be used as brightener of contton, linen, silk, polyamide fiber, wool and paper.
Package: It is packed in 50kgs plastic barrel.
Note: It needs to be declared that the above data is based on our present knowledge and experience; owing to too many affecting factors, these data cannot be free from their check and test when processing and using the product.
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