Oxytriazole: A Powerful Light Stabilizer for Plastics and Coatings
In today's world, where plastics and coatings are ubiquitous, the need for effective light stabilizers has never been greater. Exposure to UV radiation can cause these materials to degrade, leading to discoloration, cracking, and loss of mechanical properties. To prevent this, manufacturers turn to light stabilizers, which absorb UV radiation and dissipate it harmlessly as heat. One such stabilizer is oxytriazole, a versatile compound that offers excellent UV protection and compatibility with a wide range of polymers and coatings.
Oxytriazole, also known as BASF light stabilizer Tinuvin 360 or UV Absorber UV-360, belongs to the family of benzotriazole-based UV absorbers. Its molecular structure consists of two benzotriazole units linked by a methylene bridge, with two octyl groups and two tert-butyl groups attached to the triazole rings. This unique configuration gives oxytriazole a high degree of solubility, thermal stability, and compatibility with various substrates.
One of the key advantages of oxytriazole is its broad-spectrum UV absorption, which covers both the UVA and UVB regions of the spectrum. This means that it can protect not only against the harmful effects of UVB radiation, which causes sunburn and skin cancer, but also against the deeper-penetrating UVA radiation, which can cause long-term damage to the skin and eyes. In addition, oxytriazole has a high molar extinction coefficient, which means that it can absorb more UV photons per unit weight than other UV absorbers.
Another important property of oxytriazole is its low volatility, which makes it suitable for use in high-temperature processing and long-term outdoor applications. Unlike some other UV absorbers that can evaporate or migrate out of the polymer matrix over time, oxytriazole remains firmly bound to the substrate, providing long-lasting protection against UV-induced degradation. This stability is further enhanced by the presence of the methylene bridge, which acts as a spacer and prevents the triazole rings from interacting with each other and forming dimers.
Oxytriazole is compatible with a wide range of polymers, including polyolefins, PVC, polyesters, polyamides, and polycarbonates. It can be used either as a primary stabilizer, providing full UV protection, or as a co-stabilizer, enhancing the performance of other stabilizers such as hindered amine light stabilizers (HALS) or antioxidants. Oxytriazole is also effective in coatings, where it can improve the weatherability and gloss retention of paints, varnishes, and inks.
As a product of INNO Specialty Chemicals, a leading manufacturer and supplier from China, oxytriazole is produced to the highest quality standards and can be customized to meet specific customer requirements. INNO offers a wide range of oxytriazole grades, including powder, granule, and liquid forms, as well as various packaging options to suit different applications. INNO's technical team can provide expert advice on the selection and dosing of oxytriazole, as well as on its compatibility with other additives and processing conditions.
In conclusion, oxytriazole is a highly effective and versatile light stabilizer that offers excellent UV protection and compatibility with a wide range of polymers and coatings. Its broad-spectrum absorption, low volatility, and thermal stability make it an ideal choice for demanding applications in outdoor and high-temperature environments. As a product of INNO Specialty Chemicals, oxytriazole is a trusted and reliable solution for the challenges of UV protection in the plastics and coatings industry.
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