Understanding UV-327: Properties, Mechanism, and Industrial Importance
In the continuous battle against environmental degradation, ultraviolet (UV) radiation poses a persistent threat to the integrity and appearance of many materials, particularly polymers. Ultraviolet absorbers are essential additives designed to mitigate these effects. Among the most effective and widely adopted is UV-327, a benzotriazole-type compound known for its robust performance. NINGBO INNO PHARMCHEM CO.,LTD. is a key supplier of this vital chemical.
UV-327, chemically identified as 2-(2′-Hydroxy-3′,5′-di-tert-butylphenyl)-5-chlorobenzotriazole, functions by absorbing UV light across a broad spectrum, primarily between 300 and 400 nanometers. Its unique molecular structure allows it to efficiently convert absorbed UV energy into harmless thermal energy through a photophysical process known as excited-state intramolecular proton transfer (ESIPT). This mechanism effectively shields the polymer matrix from the damaging chain reactions that UV radiation can initiate, such as bond breaking, which leads to discoloration, embrittlement, and loss of mechanical properties.
The physical characteristics of UV-327 contribute significantly to its industrial utility. It typically presents as a light yellow crystalline powder with a high purity of 99% or more. Its excellent thermal stability and low volatility ensure that it remains effective even under high processing temperatures and does not easily migrate out of the polymer over time. This stability is crucial for applications where long-term protection is required, such as in outdoor building materials or automotive components.
UV-327’s compatibility with a wide range of polymers, including polyolefins, PVC, polyurethanes, and ABS resins, makes it a versatile additive. It is particularly valued for its minimal absorption of visible light, making it ideal for use in colorless, transparent, and light-colored products where maintaining optical clarity is paramount. Common applications include protecting plastics used in films, fibers, and molded parts, as well as enhancing the durability of paints, coatings, adhesives, and sealants.
NINGBO INNO PHARMCHEM CO.,LTD. provides UV-327 manufactured to high standards, ensuring consistent quality and performance. The recommended addition levels typically range from 0.2% to 0.6% for polymers, but can vary based on the specific material and exposure conditions. Often, for enhanced protection, UV-327 is used in synergy with Hindered Amine Light Stabilizers (HALS), which further boost the material’s resistance to weathering. By understanding and utilizing the properties of UV-327, manufacturers can significantly extend the lifespan and preserve the quality of their products against the persistent threat of UV radiation.
UV-327, chemically identified as 2-(2′-Hydroxy-3′,5′-di-tert-butylphenyl)-5-chlorobenzotriazole, functions by absorbing UV light across a broad spectrum, primarily between 300 and 400 nanometers. Its unique molecular structure allows it to efficiently convert absorbed UV energy into harmless thermal energy through a photophysical process known as excited-state intramolecular proton transfer (ESIPT). This mechanism effectively shields the polymer matrix from the damaging chain reactions that UV radiation can initiate, such as bond breaking, which leads to discoloration, embrittlement, and loss of mechanical properties.
The physical characteristics of UV-327 contribute significantly to its industrial utility. It typically presents as a light yellow crystalline powder with a high purity of 99% or more. Its excellent thermal stability and low volatility ensure that it remains effective even under high processing temperatures and does not easily migrate out of the polymer over time. This stability is crucial for applications where long-term protection is required, such as in outdoor building materials or automotive components.
UV-327’s compatibility with a wide range of polymers, including polyolefins, PVC, polyurethanes, and ABS resins, makes it a versatile additive. It is particularly valued for its minimal absorption of visible light, making it ideal for use in colorless, transparent, and light-colored products where maintaining optical clarity is paramount. Common applications include protecting plastics used in films, fibers, and molded parts, as well as enhancing the durability of paints, coatings, adhesives, and sealants.
NINGBO INNO PHARMCHEM CO.,LTD. provides UV-327 manufactured to high standards, ensuring consistent quality and performance. The recommended addition levels typically range from 0.2% to 0.6% for polymers, but can vary based on the specific material and exposure conditions. Often, for enhanced protection, UV-327 is used in synergy with Hindered Amine Light Stabilizers (HALS), which further boost the material’s resistance to weathering. By understanding and utilizing the properties of UV-327, manufacturers can significantly extend the lifespan and preserve the quality of their products against the persistent threat of UV radiation.
Perspectives & Insights
Core Pioneer 24
“It typically presents as a light yellow crystalline powder with a high purity of 99% or more.”
Silicon Explorer X
“Its excellent thermal stability and low volatility ensure that it remains effective even under high processing temperatures and does not easily migrate out of the polymer over time.”
Quantum Catalyst AI
“This stability is crucial for applications where long-term protection is required, such as in outdoor building materials or automotive components.”