UV absorbers are crucial additives in various industries, playing a significant role in protecting materials from the harmful effects of ultraviolet (UV) radiation. As a supplier of UV absorbers, I have witnessed firsthand the diverse range of applications and the importance of choosing the right product. In this blog, I will introduce some common brands of UV absorbers and their characteristics, helping you make informed decisions when selecting the appropriate UV absorber for your specific needs. UV Absorbers
Benzotriazole – Based UV Absorbers
Benzotriazole – based UV absorbers are one of the most widely used types in the market. They offer excellent UV absorption in the 290 – 400 nm range, which is the region where most of the damaging UV radiation lies.
Tinuvin Series by BASF
Tinuvin is a well – known brand of UV absorbers produced by BASF. Tinuvin 326, for example, is a light – colored, non – staining benzotriazole UV absorber. It is highly effective in protecting polymers such as polyolefins, styrenics, and engineering plastics. It has good solubility in common organic solvents, which makes it easy to incorporate into various formulations. Tinuvin 328 is another popular product in this series. It provides outstanding long – term UV protection for coatings, adhesives, and plastics. Its low volatility ensures that it remains in the material over an extended period, continuously absorbing UV radiation and preventing degradation.
Cyasorb UV – 5411 by Solvay
Cyasorb UV – 5411 is a benzotriazole UV absorber from Solvay. It is suitable for a wide range of applications, including polyvinyl chloride (PVC), polycarbonate, and acrylics. This UV absorber has a high extinction coefficient, which means it can absorb a large amount of UV light. It also has good thermal stability, allowing it to withstand high processing temperatures without significant degradation. In addition, Cyasorb UV – 5411 offers excellent compatibility with many polymers, ensuring uniform dispersion in the material.
Benzophenone – Based UV Absorbers
Benzophenone – based UV absorbers are also commonly used due to their relatively low cost and broad – spectrum UV absorption.
Chimassorb 81 by BASF
Chimassorb 81 is a benzophenone – type UV absorber from BASF. It provides effective UV protection for a variety of polymers, especially in applications where cost – effectiveness is a key consideration. It can be used in polyethylene, polypropylene, and PVC. Chimassorb 81 has good solubility in common solvents and is easy to incorporate into polymer formulations. It offers protection against both UV – A and UV – B radiation, helping to prevent yellowing, cracking, and loss of mechanical properties in the polymers.
UV – 9 by Everspring Chemical
UV – 9 is a well – known benzophenone UV absorber produced by Everspring Chemical. It is widely used in coatings, plastics, and inks. This UV absorber has a high absorption capacity in the UV – B region. It is relatively inexpensive and has good compatibility with many resins. UV – 9 can be easily blended into polymer systems, providing reliable UV protection at a reasonable cost.
Triazine – Based UV Absorbers
Triazine – based UV absorbers are known for their high – performance and long – lasting UV protection.
Tinuvin 1577 by BASF
Tinuvin 1577 is a high – molecular – weight triazine UV absorber from BASF. It is particularly suitable for applications where high – temperature processing is involved, such as in engineering plastics. Tinuvin 1577 has excellent thermal stability and a low vapor pressure. It provides outstanding protection against UV radiation, even in harsh environmental conditions. It can effectively prevent the degradation of polymers, maintaining their mechanical and optical properties over time.
Cyasorb UV – 1164 by Solvay
Cyasorb UV – 1164 is a triazine – based UV absorber from Solvay. It offers broad – spectrum UV protection and is widely used in automotive coatings, industrial coatings, and plastics. This UV absorber has good solubility and compatibility with various polymers. It provides long – term protection against UV – induced degradation, such as chalking, fading, and embrittlement.
Hindered Amine Light Stabilizers (HALS) as UV – Protecting Additives
Although not strictly UV absorbers, Hindered Amine Light Stabilizers (HALS) are often used in combination with UV absorbers to provide enhanced UV protection.
Tinuvin 770 by BASF
Tinuvin 770 is a well – known HALS product from BASF. It works by scavenging free radicals generated by UV radiation, which helps to prevent the degradation of polymers. It is commonly used in polyolefins, polyurethanes, and coatings. Tinuvin 770 can significantly improve the weatherability of materials, increasing their service life in outdoor environments.
Chimassorb 944 by BASF
Chimassorb 944 is another high – performance HALS from BASF. It has a high molecular weight, which gives it good migration resistance and long – term stability. It is suitable for a wide range of polymers, including polyolefins, styrenics, and engineering plastics. Chimassorb 944 can effectively protect polymers from UV – induced degradation, improving their mechanical and physical properties.
Choosing the Right UV Absorber
When choosing a UV absorber, several factors need to be considered. Firstly, the type of polymer or material to be protected is crucial. Different polymers have different chemical structures and properties, and they may require specific UV absorbers for optimal protection. For example, polycarbonate requires a UV absorber with high thermal stability due to its high processing temperature.
Secondly, the application environment is also important. If the material is used outdoors, it needs to withstand long – term exposure to sunlight, and a UV absorber with high – performance and long – lasting protection is required. On the other hand, if the material is used indoors, a less – expensive and less – powerful UV absorber may be sufficient.
Finally, cost is always a consideration. While high – performance UV absorbers may provide better protection, they are often more expensive. It is necessary to balance the cost and performance to find the most suitable UV absorber for your application.
Conclusion
As a UV absorber supplier, I understand the importance of providing high – quality products to meet the diverse needs of our customers. The common brands of UV absorbers mentioned above, such as those from BASF, Solvay, and Everspring Chemical, offer a wide range of options for different applications. Whether you are in the plastics, coatings, or other industries, choosing the right UV absorber can significantly improve the performance and durability of your products.
Disinfectants If you are interested in purchasing UV absorbers or need more information about our products, please feel free to contact us. We are committed to providing you with the best solutions and excellent customer service.
References
- BASF Product Catalog
- Solvay Technical Data Sheets
- Everspring Chemical Product Brochures
Guangzhou Shiny Co., Ltd.
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