Sylic®Optical Brightener 4BK Bluish Shade

Product Description

OBA 4BK

I.PROPERTY
Appearance:  Yellow powder
Ionicity:  Anion
Chemical structure:  Stilbene derivatives
Shade:  Bluish  shade

II.APPLICATION
   1.With blue  shade for collulosic fibers,polyamide and their blends.
   2.With Highly appropriate for exhaust process.
   3.With excellent wash fastness and very high bath exhaustion.
   4.With high and brilliant white maximum.
   5.With good stabile to alkalis,peroxide,and electrolyte.
   6. With good solubility in water.
      
III.PROCESS Method
   1.Normal cotton whitenning exhaust process
  Dosage:  FWA 4BK  0.2-0.6% o.w.f       Sodium sulfate:5-10g/L
  Temperature×time:80-100ºC×20-30mins  Liquor rate:1:10-20
2.With peroxide bleaching for cotton exhaust process
   Dosage:FWA  4BK  0.2-0.6% o.w.f        Sodium hydroxide(30%):1-4g/L
   Hydrogen peroxide(35%):4-8g/L  Sodium silicate: 2-5g/L   
   Dertergent:0.5-1g/L            Stabilizer:0.1-0.5g/L
   Temperature×time:100ºC×30-45mins  Liquor rate:1:10-20
3. Continuous Process
  Dosage:FWA 4BK  1-4g/L
  Padding:Liquor pick-up 70-80%  Temperature×time:below 160ºC×20-30sec.

IV.PACKING AND STORAGE
   1. 25KG carton box or according to customer request.
   2. Be stable for 5 years when properly stored in closed container at 20ºC.
  
 

Factory Profile:
We're a famous textile auxiliaries producer in China with over 30000 tons annual output. Our factories are located in Zhejiang
province, nearly closed to Shanghai. Your visit to our factory will be greatly welcomed.


Technical Support:
We have professional technical team which support target samples testing from customers around the World. Counter
samples will be provided after evaluation. Meanwhile customization service is available in our factory. What's more, we
can also provide pre-shipment samples for new customers during our first cooperation. 


Shipment:
Whether you have your own freight-forwarder or  you would like us to organize shipment ; whether you require delivery
FOB to a port in China or CIF to a port near you,we are happy to quote and supply whichever way you choose. Please
feel free to discuss all options with us . 
Our delivery time : Within 10 days after got T/T or L/C bank copy.




Payment:
We support a variety of payment terms like T/T, L/C at sight, DP, C.A.D etc. If customers need forward payment term like
T/T 30 days or L/C 60 days, we will also try to meet their demand based on customers' reputation and consumption.
 
Certificate:
Our products' quality has been approved by ISO9001 quality management system, OKEO-TEX, GOTs, etc.


Market:
Our partners all around the world.