Optical Brightener VBL

Optical Brightener VBL

Optical Brightener VBL,Fluorescent brightener VBL,Fluorescent brightener 85,fluorescent whitening agent VBL, is a chemical intermediate.Optical Brightener VBL is soluble in 80 times soft water, anionic, PH = 6 ~ 11, and suitable for dyeing bath pH 8 ~ 9. In an acidic solution, the fluorescence is gradually weakened and yellowed by increasing acidity. Resistant to hard water to 300 ppm, free chlorine to 0.25% , not resistant to copper, iron and other metal ions, not resistant to high temperature baking. Optical Brightener VBL can be used in the same bath with anionic surfactant or dyes, non-ionic surfactant and hydrogen peroxide, but not with cationic surfactant or dyes. The fluorescent color is bluish violet (blue-violet) . The fluorescent whitening agent Optical Brightener VBL should not be used in the same bath as cationic dyes, Surfactant and synthetic resin.

1.Optical Brightener VBL Performance features:

2.Optical Brightener VBL Applications：

(1)Optical Brightener VBL mainly used for cotton and white viscose products whitening, light color or printing products. It has good affinity to cellulose fiber and is suitable for dyeing, pad dyeing and printing paste.

(2)Optical Brightener VBL can be used to whiten vinylon and nylon products.

(3) Optical Brightener VBL used for whitening paper industry, pulp or coating.

(4) Optical Brightener VBL also can be usde for whitening of synthetic detergents.

3.Optical Brightener VBL ReferenceDosage:

(1)In printing and dyeing industry, Optical Brightener VBL can be directly added to the dye vat, dissolved with water. The dosage of dip-dyeing is 0.1%-0.2% , tie-dyeing is 0.5-3 g/l, sizing is 1-2 g/L. Bath ratio: 1:40, best dyeing bath temperature: 60 °C.

(2)In the paper industry, the fluorescent whitening agent Optical Brightener VBL can be dissolved in water and added to the pulp or coating. In the paper industry, 80 times water is used to dissolve the Optical Brightener VBL and add it to the pulp or coating. The dosage is 0.1-0.3% of the weight of the paper pulp or the coating.

(3)Add 0.1-0.5% to the synthetic detergent. VBL not only makes the detergent itself white, and can increase the whiteness of the fabrics.

Optical Brightener VBL can be mixed with anionic and non-ionic surfactant, direct, acid and other anionic dyes and coatings. VBL is not suitable to be used in the same bath as cationic dyes, Surfactant and synthetic resin.

The amount of Optical Brightener VBL should be appropriate, excessive use of Optical Brightener VBL will reduce whiteness or even yellowing, not more than 0.5% is recommended.

4.Our advantage:

1.Owned factory, Owned R&D center and lab.

2.Factory directly sale, price can be always 3% lower than the market price.

3.Less dosage, Better effect.

4.Fast delivery, Excellent service.

5.We not only sell OBA, but also provide system whitening solutions and technique support.

6.We have many years of export experience, we can provide to you complete shipping documents for your custom clearance.

5.Packing information:

Usually is 25Kg/cardboard drum with inner double PE liner.