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.
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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
Optical brighteners or fluorescent whitening agent as a very small part of the chemical additives, the variety is indeed very large. Among them, the optical brighteners OB-1 is widely used in Plastic products. Many people might not have a very specific understanding of OB-1. Here let have a detailed overview of the characteristics and applications of the optical brighteners OB-1.
Different optical brighteners have different shade, such as blue, bright blue or blue violet light, etc., fluorescent whitening agent is the using the blue light to neutralizes yellow light on the plastics and Therefore, the heavier the blue light is, the better the fluorescence and whiteness effect will be. Due to the different production method, the optical brighteners OB-1 has the OB-1 green and the OB-1 yellow. OB-1 green has blue shade, OB-1 yellow has blue-violet shade. The market accept OB-1 green more.
The temperature resistance of OB-1 is about 450℃, which is the highest among all fluorescent brighteners at present. for clients who produce high-temperature resistant plastics, OB-1 is the best choice.
As you know, the plastics industry is a very broad industry, and most plastics are produced at high temperatures, some even reaching 300°C. Celsius and above, only the brightening agent OB-1 can withstand temperatures of 300°C, which is also the advantage of OB-1, almost Suitable for all plastics.
The biggest disadvantage of optical brightener OB-1 is that it is less stable, and under the same amount of dosage and the same temperature and humidity, the migration precipitation of OB-1 is the biggest among other OBAs for polymers. Plastic products are more likely to yellowing. If the stability of the product has high requirements, such as EVA footwear products should choose good stability of the fluorescent whitening agent KCB.
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