Sylic®Fluorescent Brightener OB/ Plastic/ Chemical fiber (C.I.:184)

• CAS No.: 7128-64-5
• Formula: C26H26N2O2S
• Environmental Protection: Yes
• Color: light yellow powder
• Kind: Fluorescent Brightener
• Appearance: Powder
• Model NO.: OB
• Application: Fluorescent Brightener
• Transport Package: 25kg Cardboard Drum
• Trademark: Sylic
• Origin: China
• Production Capacity: 30000 Tons/Year

Product Description

Sylic®  Fluorescent Brightener OB

Structural formula:




Product Name: Fluorescent Brightener OB
Chemical name: 2.5-Bis-(5-tert-butyl-2-benzoxazolyl)thiophene
C.I.:184
CAS NO.:7128-64-5
Technical index:
Molecular formula: C26H26N2O2S
Molecular weight: 430
Appearance: light yellow powder
Shade: blue and white
Melting point: 196-203ºC
Content: ≥99.0%
Ash parts: ≤0.1%
Fineness: through 200 mesh
Maximum absorption wavelength: 375nm (in ethanol)
Maximum fluorescence emission wavelength: 435nm (in ethanol)
Product Usage:
The fluorescent brightener OB is one of the excellent brightener varieties widely used in plastics and chemical fibers. It can be used in thermoplastics, polyvinyl chloride, polystyrene, polyethylene, polypropylene, ABS, acetate, and also It can be used in varnishes, paints, white enamels, coatings and inks, and it also has a very good effect on the whitening of synthetic chemical fibers. This brightener has the characteristics of heat resistance, weather resistance, non-yellowing, and good color. It can be added to the monomer or prepolymerized material before or during polymerization, condensation, addition polymerization, or it can be added in the form of powder or pellets (ie masterbatch) before or during formation of plastics and synthetic fibers .
Reference dosage:
1. Polyvinyl chloride (PVC):
In hard or soft PVC:
Brightening: 0.01-0.05% (10-50g/100KG material)
Transparent: 0.0001-0.001% (0.1g-1g/100kg material)
2. Polystyrene (PS):
Brightening: 0.001% (1g/100kg material)
Transparent: 0.0001-0.001 (0.1-1g/100kg material)
3. ABS:
Adding 0.01-0.05% to ABS can effectively eliminate the original yellow color and achieve the whitening effect.
4. Polyolefin:
Good whitening effect in polyethylene and polypropylene:
Transparent: 0.0005-0.001% (0.5-1g/100kg material)
Brightening: 0.005-0.05% (5-50g/100kg material)
Packing: 25kg cardboard drum lined with plastic bag or packed according to customer requirements




                    
Factory Profile:
We're a famous Silicone 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.