Ultraviolet (UV) radiation poses a significant threat to the stability and appearance of many materials. Ningbo Inno Pharmchem Co., Ltd. offers UV Absorber UV-360 (CAS: 103597-45-1), a sophisticated chemical compound designed to mitigate these damaging effects. This article delves into the scientific principles behind UV-360's exceptional performance as a UV absorber and explores the numerous benefits it brings to various applications.

At its core, UV-360 is a benzotriazole derivative that functions as a highly effective light stabilizer. Its molecular structure is specifically engineered to selectively absorb ultraviolet light within the UVA and UVB spectrum, particularly in the range of 300-400nm. This absorption process is not merely passive; it involves a rapid conversion of absorbed UV energy into harmless thermal energy through a phenomenon known as excited-state intramolecular proton transfer (ESIPT). This photophysical mechanism ensures that the UV-360 molecule returns to its ground state without undergoing degradation, allowing it to repeatedly absorb UV radiation over time.

Key Chemical Properties and Mechanisms

The chemical formula for UV-360 is C41H50N6O2, and its CAS number is 103597-45-1. As a Diurethane Dimethacrylate, it offers a unique combination of properties that set it apart. Its primary function is to act as a sacrificial shield for the host material. By absorbing the UV energy that would otherwise break chemical bonds within polymers or coatings, UV-360 prevents issues such as:

  • Color fading and yellowing: UV radiation can break down chromophores, leading to undesirable color changes.
  • Loss of mechanical properties: Embrittlement, cracking, and reduced tensile strength are common consequences of UV exposure.
  • Surface degradation: Chalking, blistering, and loss of gloss can occur on the surface of materials.

The low volatility of UV-360 is a critical advantage. This means it remains within the material matrix even at elevated temperatures encountered during processing or in high-heat environments. This sustained presence ensures long-term protection, which is crucial for applications like automotive components, outdoor signage, and durable plastics. Its high molecular weight further contributes to its reduced migration and excellent compatibility with various polymer systems, including acrylic resins, polycarbonates, polyolefins, and polyesters.

Synergistic Effects and Formulation Benefits

UV Absorber UV-360 can often be used in conjunction with other light stabilizers, such as hindered amine light stabilizers (HALS), and antioxidants. This combination can create synergistic effects, providing a more comprehensive protection package against various forms of degradation, including photo-oxidation. Formulators often select UV-360 for applications that demand exceptional weatherability and resistance to thermal degradation.

Ningbo Inno Pharmchem Co., Ltd. is dedicated to supplying premium chemical raw materials. Our commitment to quality ensures that UV-360 meets high purity standards and delivers consistent performance. By understanding the scientific underpinnings of this advanced UV absorber, manufacturers can better leverage its capabilities to produce superior products.

For those seeking to enhance the UV resistance and longevity of their products, UV Absorber UV-360 is an excellent choice. Contact Ningbo Inno Pharmchem Co., Ltd. to learn more about how this versatile chemical can benefit your specific applications and to request samples.