【Product】
Optical Brightener VBL (OBA 85)
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Optical Brightener VBL (OBA 85)
Technical Specifications:
CAS NO.:12224-06-5
HS Code:32042000
C.I. Number:85
1 Appearance: light yellow powder
2 Fluorescent color: blue-green and micro-purple
3 Melting properties: soluble in more than 80 times soft water.
There will be agglomeration when it begins dissolving.
Watering and full agitation and then it appears transparent.
After dissolving in water, it appears tartish or neutral.
4 ionizing: anionic
5 dye bath PH value: neutral or tartish, most suitable when PH=8-9
6 stability:acid resistant to PH=6; alkali resistant to PH=11; hard water resistant to 3000PPM;
free chlorine resistant to 75%;
intolerance with heavy metal ion such as copper, iron and so on.
7 strength: equal to 100 of the standard
8 Whiteness: WCIE: ≧ -3
9 Fineness: ≦ 5%
10 Moisture content: ≦ 5%
11 inpurity content insoluble in water: ≦ 0.5%
Usage:
whiten and brighten fibrin products
1.Dip-dye Whitening
The conditions of VBL’S dip-dye whitening are similar to the direct dye.
For example: cotton cloth dip-dye Whitening
VBL 0.1-0.3% (fabric weight)
anhydrous sodium sulfate:0-20% (plant weight)
Processing conditions; bath ratio 1: 20-1: 40
PH = 7-9
Temperature: 20 - 40 ℃
Time: 20-30 minutes
Drying condition: drying temperature is usually the 70 - 80 ℃
2.Pad dying Whitening
Pad dying fabric whitening usually needs refining bleaching, dechlorination, drying, speed is generally
30-40 m / min or so, two Baptist 2 rolling, rolling liquid rate: 70-100%, temperature: 40 -50 ℃, PH = 7-9
For example: cotton cloth whitening
VBL 0.5-3 g / l
Opened powder 0.25-0.5 g / l
Use:
VBL is mainly used to whiten and brighten white cellulose fabric, paper,
light-colored cellulose fabrics, dial dye printing etc..
Package:
25 kg per kraft paper bag
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