Maximizing Protection: The Synergistic Effects of a Mixture of Antioxidant, Benzotriazole Type UV Absorber, and Hindered Amine Type Light Stabilizer

In the world of materials science, protecting polymers and plastics from degradation caused by exposure to UV radiation and heat is a crucial consideration. Failure to do so can result in a loss of mechanical properties, discoloration, and ultimately, shortened lifespan. To address this issue, manufacturers turn to a variety of additives, including antioxidants, UV absorbers, and light stabilizers.

One such additive that has gained popularity in recent years is a mixture of an antioxidant, a benzotriazole type UV absorber, and a hindered amine type light stabilizer. This powerful combination offers a synergistic effect that maximizes protection against UV radiation and heat, ensuring that the polymer or plastic remains durable and aesthetically pleasing for longer.

The manufacturer and supplier of this additive from China is INNO Specialty Chemicals, and their product is known as UV-B75 or BASF light stabilizer Tinuvin B75. Its synonyms include BASF Tinuvin B75, UV absorber UV-B75, Light Stabilizer UV-B75, Compound light stabilizer, Synergistic Blend of 20% BX 1135 40% UV 571 40% UV 765, and Ultraviolet Absorber UV-B75.

So, what exactly are the components of this powerful mixture and how do they work together?

Antioxidants are compounds that prevent or slow down the degradation of polymers and plastics caused by oxygen and free radicals. They work by scavenging free radicals and interrupting the chain reaction that leads to oxidative degradation. In the case of UV-B75, the antioxidant component is likely a hindered phenolic compound, such as Irganox 1010 or Irganox 1076.

UV absorbers, on the other hand, protect against the damaging effects of UV radiation by absorbing it and converting it into heat, which is then dissipated harmlessly. Benzotriazole type UV absorbers, such as UV-571 and UV-765, are particularly effective at absorbing UV radiation in the 300-400 nm range, which is the most damaging to polymers and plastics.

Finally, hindered amine light stabilizers (HALS) are compounds that protect against the degradation caused by heat and light. They work by scavenging free radicals that are generated by the photo-oxidation process, thereby interrupting the chain reaction that leads to polymer degradation. In the case of UV-B75, the HALS component is likely a tertiary amine, such as Tinuvin 1135.

When combined in the proper proportions, these three components work synergistically to provide comprehensive protection against the damaging effects of UV radiation and heat. The antioxidant component scavenges free radicals that are generated by both UV radiation and heat, while the UV absorber component absorbs the UV radiation that is most damaging to polymers and plastics. Finally, the HALS component scavenges free radicals that are generated by the photo-oxidation process, which is particularly relevant in outdoor applications where the material is exposed to both UV radiation and heat.

In summary, the use of a mixture of an antioxidant, a benzotriazole type UV absorber, and a hindered amine type light stabilizer offers a powerful and comprehensive solution to the challenge of protecting polymers and plastics from degradation caused by exposure to UV radiation and heat. INNO Specialty Chemicals' UV-B75, also known as BASF light stabilizer Tinuvin B75, is a high-quality product that provides this protection and has gained popularity in the industry. By understanding the components of this mixture and how they work together, manufacturers can make informed decisions and maximize the lifespan and performance of their products.

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