We are professional optical brightener manufacturers, own optical brightener factory, one of the best Optical Brightener OB-1 and UV absorber manufacturers and suppliers china.
Call Us: +86-15854199366 Email: sales@obaindustrial.com

Optical Brightener OB

Optical brightener OB is a kind of optical brightener called the public lover, which shows that it has a very good fusion and is suitable for all kinds of plastics. At the same time, the optical brightener OB can also be used in paint, ink, coating, and PE film.

OB .jpg

Product Cate:Optical Brightening Agent For Plastic

Product Name:Optical Brightener OB

Chemical Name:2,5'-Bis[2-(5-tert-buty l-2 benzoxazoly)thiophene

CAS No.:7128-64-5

C.I. No.:184

Molecular Formula:C26H26N2O2N2

Molecular Weight:430

Appearance:slight greenish yellow powder 

Melting Point:200-202°C 

Purity:≥99.5%

Uses:Mainly be used in whitening of thermoplastic, polyvinyl chloride(PVC), polypropylene(PP), polyester fiber, paint and ink, etc.


Optical Brightener OB Dosage:

In plastics, the amount of fluorescent whitening agent is usually expressed as a percentage relative to the mass of the plastic. 

The usual amount of transparent plastic is 0.0001%-0.001%, and the amount of white plastic is usually 0.05%-0.1%.


In paint and ink, the amount of fluorescent whitening agent is usually 0.02%-0.05%. When it comes to the specific dosage, 

it is recommended to get some small samples from the fluorescent whitening agent manufacturer, because less fluorescent whitening 

agent will easily cause whitening The effect is unsatisfactory. Using too much will cause the brightener to separate out, so before determining 

the dosage, take a sample test to achieve our desired effect.


Peru is a big market of plastics plastics.Optical brightener is a kind of fluorescent dye,it can make white plastic products look more high-end, most factories will add optical brightener to the formula.
In recent years, the demand for paint in the decoration field has continued to rise, and consequently the demand for paint Optical brightener OB 184 CAS NO.7128-64-5 has risen. Optical brightener OB 184 CAS NO.7128-64-5 is a model with a re...
RAYTOP CHEMICAL, as a leading enterprise in the optical brightener industry in China, has been committed to the deepening reform of the enterprise and product innovation research and development, and has created more than a dozen star produ...
With the continuous advancement of the current level of technology, the application fields of Fluorescent Brightener 184 have gradually expanded. In the paint industry, paint manufacturers often add the optical brightener OB 184, which is a...
Optical brightener OB can be used for the whitening and brightening of thermoplastics, such as PVC, PE, PP, ABS, PS and other plastic products. It has excellent heat resistance and light resistance. It can also be used to whiten some fibers...
OPTICAL BRIGHTENNING AGENT OB is used in coating, which can significantly improve the whiteness of coating,Can maintain the whiteness and vividness of the coating for a long time.Like many layers of canned products, all can use optical brig...
opticla brightener ob 184 is a yellow-green powder,be used in plastics, coating,ink,has excellent whitening effect,ob environmental protection effect is good, It has passed the FDA certification
PE plastic is exclusive, and the pure quality of raw materials must be ensured during processing. Therefore, we recommend the Optical brightener OB with high purity, good stability and good permeability.
Optical Brightener is kind of plastics additives can absorb UV light then emit visible blue light to reduce the yellowish and make the products more white.Optical brightener used for plastic is a very wide application.mainly used in whiteni...
China optical brightener OB factory and manufacturer supply Optical Brightener OB 184 for plastics,CAS NO.7128-64-7,melting point:200-202°C ,it has two different grades,one is for ink,pink and PE film,another is for all kinds of plasics,such...
China is the main source of optical brightener OB,and Optical Brightener OB 184 can be used for most of the plastics,its CAS NO.7128-64-7,and melting point is200-202°C