light yellow optical brightener VBL in powder
0 likes
China [CN] |
Product name |
Optical brightener VBL |
|
Chemical property |
CAS No:12224-16-7 Molecular formula:C36H34N12O8S2NA2 Molecular weight:872.84 |
|
Specifications: |
Appearance: light yellow powder Fluorescent color: blue-green and micro-purple Strength: equal to 100 of the standard Whiteness: WCIE: -3 Fineness: 5% Moisture content: 5% Impurity content insoluble in water: 0.5% |
|
Applications:
|
Mainly used to whiten and brighten white cellulose fabric, paper, light-colored cellulose fabrics, dial dye printing etc. |
|
Recommended use: |
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 °C,Time: 20-30 minutes Drying condition: drying temperature is usually the 70 - 80 °C 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 °C, PH = 7-9 For example: cotton cloth whitening: VBL 0.5-3 g / l,Opened powder 0.25-0.5 g / l, |
Click enlarge Image