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Optical Brightener VBL (CAS NO. 12224-06-5) is for white pattern in discharge printing of cotton fabrics. Optical Brightening Agent VBL (CAS NO. 12…
Optical Brightener VBL (CAS NO. 12224-06-5) is for white pattern in discharge printing of cotton fabrics. Optical Brightening Agent VBL (CAS NO. 12224-06-5) Main Chemical Composition: Stilbene derivative Specification: Appearance: Slight yellow powder Fluorescent Color: Similar to the standard sample Whitening strength: 40±3 (against standard sample VBL) Moisture: d5% Fineness( 80 mesh residue): d5% Property: 1. With bluish violet color 2. Soluble in soft water as much as 80 times weight, 300 ppm 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 fibers and cotton fabrics. 2. Whitening agent for white pattern in discharge printing of cotton fabrics. 3. Brightening agent for light colored cellulose base fibers. Process: 1.exhaust whitening process: BC: 0.12-0.8% (o.w.f.), bath ratio: 1: 5-30, dyeing temperature: 40°C- 100°C Na 2 SO 3 : 0-10g/l., start temperature: 30°C, heating rate: 1-2°C/min, keep the temperature at 50-100°C for 20-40min, then lower to 50-30°C’ wash ’ dry ( 100°C ) ’ setting (120°C-150°C)×1-2 min( add proper amount leveling agent according to the leveling effect). 2. Padding Process: BC: 1.2-8g/l, residue liquor ratio: 100%, one dip and nip ’ dry( 10°C ) ’setting (120°C-150°C)×1-2 min The information of our products is for reference only. We are not responsible for any unexpected results or patent dispute caused by it.
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