Optical brightener FP-127 is a relatively common model among plastic brighteners, which has a good brightening effect on various plastics. FP-127 is especially ideal for whitening and brightening PVC products, and has been recognized by many manufacturers.

So, many people may ask, is there any difference between optical brightening agent FP-127 and other types of brighteners? Why does it have excellent results when applied to PVC plastics? This requires analysis of the advantages and disadvantages of FP-127 in order to better understand.

Price comparation:

 Although the price of optical brightener OB-1 is lower than optical brightener FP-127, the weather resistance of optical brightener OB-1 is poor, which affects the final use effect of the product; the price of FP-127 is comparable to OB, but the instant whiteness optical brightener FP-127 is higher than optical brightener OB; For products such as optical brightener KCB and optical brightener KSN, many manufacturers prefer to choose optical brightener FP-127 due to the large price difference.

Table 1: Price comparison table of various optical brightener models

  Model                                       price ratio

 optical brightener FP-127                  1

optical brightener OB                        0.94

optical brightener KCB                      1.81

optical brightener OB-1                     0.55

Temperature resistance:

Each type of fluorescent brightening agent has its own maximum temperature resistance value. If the temperature resistance value is exceeded, the fluorescent brightening agent will decompose and become invalid. Therefore, the process temperature directly restricts the choice of fluorescent whitening agent.

PVC is the world's largest production of general-purpose plastics. It has a wide range of applications. It is widely used in building materials, industrial products, daily necessities, artificial leather pipes, plates, wires and cables, and foam materials.

The maximum production process temperature of PVC is within 200 degrees, and the temperature resistance of the fluorescent brightening agent FP-127 is about 210 degrees, so it is completely applicable from the process.

Weather resistance:

Among the various types of optical brighteners, the fluorescent brightener FP-127 has general weather resistance, but in PVC plastic products, optical brightener FP-127 has excellent weather resistance, and the finished products have good whiteness and are not easy to migrate.

From the perspective of weather resistance, the weather resistance of optical brightener FP-127 is better than that of OB-1 and lower than that of products such as optical brightener OB or optical brightener KCB.

Table 2: Comparison table of stability of various optical brightener models

           Model                                     Stability

        optical brightener OB-1                  poor

        optical brightener KCB                   strong

        optical brightener KSN                    strong

        optical brightener FP-127               poor

 In summary, in terms of temperature resistance, weather resistance, price and other factors, fluorescent brightener FP-127 is a good choice for PVC plastic products.