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|Appearance:||Light Yellow Crystalline Powder||Place Of Original:||Hunan,China|
|Fineness:||120mesh||Application:||China Suppliers For Paper Box A4 Paper Optical Brightener|
Fluorescent Whitening Agent Paper Box A4 Paper Detergent Optical Brighteners
Product name: Optical brightener VBL for dyeing,printing and paper making(C.I.85 )
Other name: Optical Brightener 85
Molecular: weight: 872.84
Appearance: Light yellow to yellow powder
Color tone: blue-green and micro-purple
UV absorption (in E) : 348nm
Whiteness: WCIE: -3
Moisture content: <5%
Inpurity content insoluble in water: 0.5%
1.For cotton fabric and gluing products, light color or printing products.
2. For printing pulps and exhausting or padding dyeing.
3.For polyvinyl alcoholic fiber and polyamide fiber.
4. For paper-making industry, paper pulp or paints
1.with bluish violet color.
2.Soluble in soft water as much as 80 times weight, 300ppm in hard water.
3.Anionic types, 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.
1.The dosage used is 0.08-0.3% in printing and dyeing industry.
The conditions of VBL’S dip-dye whitening are similar to the direct dye.
For example: cotton cloth dip-dye Whitening
VBL 0.08-0.3% (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.
Dr Dyeing condition: drying temperature is usually the 70 - 80 °C
2. The dosage used is 0.1-0.3% in paper making industry.
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 0.25-0.5g/l.
Package: 25kg/drum,8tons/20FCL, or as customer request.
Changsha Lianda Chemical Co., Ltd. is a professional high-tech enterprise of fluorescent brightener in China.
Being founded in 2007, we are the factory and manufacturer engaged in R & D, production, sales and after - sales services of fluorescent brighteners for decades of years.
Till now, we have developed almost 40 series of the fluorescent brighteners, which have been widely used in plastics, textiles, printing and dyeing, paper, paints, coatings etc. Almost 80% of the products has been exported to more than 50 countries and regions such as the United StatesJapan, Europe, South America, and the Arabic Area, etc.
1. Quality be first! We supply higher than 98% purity of fluorescent brightener powder
2. We are factory for decades of years with advance technical and testing equipment and very strict control system
3. OEM and ODM are welcomed
4. Corporate Mode: We treat clients not only as partners also as friends
5. Fast & Cheap Delivery: We have contracted long-term forwarder partners, providing cheapest air,
express, and ocean shipment according to your requirements, in-time tracking and
24 hours phone or online after-sales services.
We will achieve this by being a reliable manufacturer to our global clients adhering to the core values of
- Dedication to our customers’ success
- Respect for our employees
Contact Person: admin