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-1

Optical brightener OB-1 has the highest melting point among the optical brighteners, and is also the most widely applicable and the most sold brightener. Optical brighteners OB-1 have two appearance colors, yellow and green.

Optical Brightener OB-1 produced from China only,but world wilde use it to all kinds of plastics,or make master batches,then the optical brightener masterbatches and compound are used in the plastics industry.

As a professional optical brighteners OB-1 manufacturer, we have our own optical brighteners OB-1 factory. We are leading the optical brighteners OB-1 industry to a higher end. 

OB-1 G.jpg


Product Name:Optical Brightener OB-1

Chemical Name:2.2’-(4.4’-diphenol vinyl) dibenzoxazol

CAS No.:1533-45-5

C.I. No.:393

Molecular Formula:C28H18N2O2

Molecular Weight:414 

Technical Index:Appearance:yellowish green powder 

Melting Point:357~359°C 


Recommend Dosage:200-500g per 1000kg material

Package:10KG/25kg per fiber drum with 450kg or 500 kg or 675kg/pallet


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.

Welcome to purchase optical brightener OB-1, we provide high quality optical brightener OB-1 with factory price.

The white polyester staple fiber is made of recycled materials, which looks yellow and unsightly, causing headaches for many manufacturers. They tried their best to solve this problem, but they did not achieve the expected results. Try to a...
Pakistan is one of the leading countries of production and consumption of polyester staple fiber. Polyester staple fiber is actually polyester fiber (PET). Polyester staple fiber is the downstream product of PTA and ethylene glycol, and is ...
In order to make the appearance of the product look more high-end, the factory generally adds optical brighteners to the formula. The optical brighteners used in plastic products includes: optical brighteners OB 184, optical brighteners OB-...
The optical brightener OB-1 is widely used in PP, PET, PS, ABS, HDPE, LDPE, PVC, PBT etc plastics industry. In addition, the optical brightener OB-1 is also widely used in polyester staple fiber and color masterbatch.
Pakistan is the second largest plastic packaging market in South Asia. The main industries use OPTICAL BRIGHTENER OB-1 CAS NO.1533-45-5/CI.NO.393 involved arevarious types of plastics, packaging and printing products,such as polyester stapl...
For new materials (or a small part of recycled materials) for woven bags, our company recommends Optical brightener OB-1 which with blue light. Its appearance is bright yellow-green crystalline powder, high temperature resistance, and low d...
The main feature of the optical brightener OB-1 is its high melting point, which can reach 360 degrees Celsius, which is a good choice for the production of high temperature products. The fluorescent whitening agent OB-1 has two appearance ...
The Optical Brightener OB-1 has two appearance colors, green and yellow. The whitening effect is the same except that the shade of yellow OB-1 is a little purple. But for customers who produce color masterbatches, the yellow-green appearanc...
Since 2009, our RAYTOP CHEMICAL has exported 90-100 tons of optical brighteners to South Korea every year. The concentrated industries mainly include polyester staple fiber, masterbatch, PP products, PE products, PVC products, coatings, pai...
The fluorescent whitening agent OB-1 has two appearance colors, green and yellow. The whitening effect is the same except that the shade of yellow OB-1 is a little purple. But for customers who produce color masterbatches, the yellow-green ...
The additives used in PP woven bags are diversified on the market. Today, I will introduce to you in detail the method and process of adding brighteners to PP woven bags.
raw material:PP material,Calcium carbonate,Filler,Optical Brightener...
Optical brightener OB-1 is the most cost-effective and most popular product among the optical brighteners, because only its temperature resistance can reach 360℃ and the whiteness is very good. Suitable for all kinds of plastics such as PET...
optical brightener ob-1 393 have high whitening intensity with strong fluorescence,often used in white masterbatch.Its addition amount is very small,one to five ten thousandths,Will hardly increase customer costs,But it can increase the whi...
Fluorescent Brightener OB-1 is widely used in various plastic products.Especially recycled plastic ,can make them white like new materials.Can also be added to new plastic to make it look whiter and brighter.Almost all plastic products can ...
OB-1 393 optical brightening agent is a yellow-green powder,very popular in Pakistan.It is widely used in various plastic products,have a good whitening effect for PET,PE,PP,PC,its one of the best optical brighteners
The Optical Brightener OB-1 masterbatch is an additive on plastics, mainly for whitening. The Optical Brightener used for plastics is powder, but the Optical Brightener masterbatch is granular, which is easier to stir.
Optical Brightener is a kind of white pigment or dyestuff,most is powder form with yellow green appearance.Optical Brightener powder can be added into the raw material together,then mix it is ok.
Optical Brightener OB-1 with Yellow and Green apperance,powder form,it has higest melting point 360 ℃,most customers use it on PVC ,ABS,PP,PE,MASTERBATCHES,POLYESTER STABLE FIBER,FILLER,COMPOUNDS etc.