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2-(2-Hydroxy-5-Methyl-Phenyl)Benzotriazole: A Powerful UV Absorber for Industrial Applications

UV radiation can cause significant damage to various materials, including polymers, paints, and coatings. To minimize this damage, manufacturers often use UV absorbers, such as 2-(2-Hydroxy-5-Methyl-Phenyl)Benzotriazole, also known as Tinuvin P. This article explores the properties and applications of this versatile chemical, manufactured and supplied by INNO Specialty Chemicals from China.

Chemical Structure and Properties

2-(2-Hydroxy-5-Methyl-Phenyl)Benzotriazole is a white crystalline powder that is soluble in organic solvents, such as methanol, ethanol, chloroform, and acetone. Its molecular formula is C13H11N3O, and it has a molecular weight of 225.25 g/mol. The chemical structure comprises a benzotriazole ring and a methylphenol group, which confer excellent UV absorption properties.

UV Absorption Mechanism

The UV absorption mechanism of 2-(2-Hydroxy-5-Methyl-Phenyl)Benzotriazole involves the transfer of absorbed energy to the surrounding solvent or polymer matrix, which dissipates the energy as heat. This prevents the energy from causing chemical reactions, such as photooxidation, which can lead to material degradation. The chemical structure of 2-(2-Hydroxy-5-Methyl-Phenyl)Benzotriazole enables it to absorb UV radiation in the range of 290-400 nm effectively.

Applications

2-(2-Hydroxy-5-Methyl-Phenyl)Benzotriazole finds applications in various industries, such as plastics, coatings, adhesives, and fibers. Its primary role is to protect these materials from UV-induced degradation, which can cause color fading, cracking, and loss of mechanical properties. The chemical is particularly useful in outdoor applications, where materials are exposed to high levels of UV radiation, such as in automotive coatings, building materials, and electrical insulation.

In the plastics industry, 2-(2-Hydroxy-5-Methyl-Phenyl)Benzotriazole is used as a light stabilizer in polyolefins, PVC, and other polymers. It prevents the degradation of the polymer matrix due to UV exposure, which can cause discoloration, brittleness, and loss of tensile strength. The chemical is also compatible with other additives, such as antioxidants, processing aids, and pigments, which makes it a versatile component in polymer formulations.

In the coatings industry, 2-(2-Hydroxy-5-Methyl-Phenyl)Benzotriazole is used as a UV absorber in clear coatings, paints, and varnishes. It enhances the durability and gloss of the coating by preventing the UV-induced degradation of the film. The chemical is also useful in wood coatings, where it prevents the yellowing of the wood due to UV radiation.

Conclusion

2-(2-Hydroxy-5-Methyl-Phenyl)Benzotriazole is a powerful UV absorber that finds applications in various industries due to its excellent UV absorption properties. As a manufacturer and supplier from China, INNO Specialty Chemicals offers high-quality products that meet the specific requirements of different customers. With its ability to prevent UV-induced degradation, this chemical is essential in maintaining the durability and appearance of materials exposed to outdoor environments.

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