The sun is an important source of energy and light, but it can also cause damage to many materials, including plastics, coatings, and textiles. Ultraviolet (UV) radiation from the sun can degrade and discolor these materials, making them brittle, yellow, or faded over time. This is why UV protection is essential for many applications, from outdoor furniture and automotive parts to packaging and electronic devices. To achieve the best UV protection, you need a reliable and effective UV absorber or light stabilizer, such as BASF Chimassorb 81.

BASF Chimassorb 81, also known as Cytec Cyasorb 531 or Cytec 531, is a high-performance UV absorber and light stabilizer that can provide excellent protection against UV radiation in a wide range of polymers and coatings. This product is produced by Ningbo Inno Pharmchem Co., Ltd., a leading manufacturer and supplier of specialty chemicals for various industries.

The active ingredient in BASF Chimassorb 81 is 2-hydroxy-4-n-octyloxybenzophenone, also called [2-hydroxy-4-(octyloxy)phenyl]phenyl ketone, 2-hydroxy-4-octyloxybenzophenone, or octabenzone. This compound has a high molar extinction coefficient in the range of 350-400 nm, which means it can absorb a significant amount of UV radiation in this wavelength range, where many polymers and coatings are most vulnerable to degradation. Additionally, BASF Chimassorb 81 has good solubility and compatibility with various resins and additives, making it easy to incorporate into formulations and achieve consistent performance.

BASF Chimassorb 81 is particularly suitable for applications that require long-term outdoor exposure or high UV intensity, such as agricultural films, geotextiles, roofing membranes, and automotive parts. It can also be used in indoor applications where UV radiation from artificial sources, such as fluorescent lamps or LEDs, can cause photo-oxidation or discoloration, such as white or light-colored plastics or coatings. BASF Chimassorb 81 is effective in both polyolefin and non-polyolefin systems, such as polystyrene, polyurethane, and acrylics, and can be used alone or in combination with other UV absorbers or light stabilizers, such as hindered amine light stabilizers (HALS) or benzotriazoles.

BASF Chimassorb 81 is also known as UV Absorber UV-531, UV Absorber BP-12, Light Stabilizer UV-531, Light Stabilizer BP-12, Ultraviolet Absorbent UV-531, Benzophenone-12, or BP-12. These names refer to the same compound or a combination of BASF Chimassorb 81 with other ingredients. For example, UV Absorber UV-531 is a blend of BASF Chimassorb 81 and a benzotriazole UV absorber, while Benzophenone-12 is a synonym for 2-hydroxy-4-octyloxybenzophenone. Therefore, it is important to check the specifications and properties of the product before using it in a specific application.

BASF Chimassorb 81 is available in different forms and grades, such as powder, granules, or liquid, depending on the requirements of the application and the processing technology. For example, powder or granules are suitable for extrusion or molding processes, while liquid is preferred for coating or spraying applications. The recommended dosage of BASF Chimassorb 81 varies depending on the type and thickness of the polymer or coating, the expected UV exposure, and other factors. Generally, a dosage of 0.1-0.5% by weight is sufficient for most applications, but higher dosages may be required for critical applications or extreme conditions.

BASF Chimassorb 81 is a reliable and effective solution for maximizing UV protection in various polymers and coatings. Its high UV absorption capacity, good solubility, and compatibility with different resins and additives make it an ideal choice for many applications. Moreover, BASF Chimassorb 81 is produced by Ningbo Inno Pharmchem Co., Ltd., a trusted manufacturer and supplier of specialty chemicals with a proven track record of quality and reliability. By choosing BASF Chimassorb 81, you can ensure the long-term performance and durability of your products and protect them from the harmful effects of UV radiation.

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