Brightener OB details：

Product Name	Optical Brightening Agent OB 184
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%

Fluorescent brightener OB advangtages：

There are many models of plastic f fluorescent brightener. In addition to fluorescent brightener OB, there are also fluorescent brightener FP-127, fluorescent brightener OB-1, fluorescent brightener KCB and so on. So why is fluorescent brightener OB so popular?

In the production and processing of plastic products, most manufacturers will choose fluorescent brightener OB-1, fluorescent brightener FP-127 and other products, these products can be used, and the whiteness is relatively good, but in actual production,they are easy to separate out and the end products are easy to change to be yellow. Users who have higher requirements on weather resistance and stability will still choose fluorescent brightener OB.

This is because the fluorescent brightener OB has Better weather resistance and Better stability.

Although it is more expensive than OB-1, but its stable whitening performance and rarely migration and yellowing make most customers choose it.