In the realm of material science, protecting polymers from the damaging effects of ultraviolet (UV) radiation is a continuous challenge. Various types of UV absorbers are available, each with unique properties and application suitability. Today, we will delve into the characteristics of UV-328 (CAS 21615-49-6) and compare its efficacy against other common UV absorbers, highlighting why it's a preferred choice for numerous industrial applications. As a dedicated manufacturer and supplier, we aim to provide clarity for your purchasing decisions.

UV-328, chemically known as 2-(2'-hydroxy-3',5'-dipentylphenyl)benzotriazole, belongs to the hydroxyphenylbenzotriazole class of UV absorbers. This class is renowned for its excellent UV absorption capabilities, particularly in the UV-A and UV-B regions, and its good compatibility with a wide range of polymers. Its molecular structure allows it to effectively quench excited states and dissipate UV energy as heat, thereby preventing polymer chain scission and oxidative degradation.

Compared to other UV absorber classes, such as benzophenones or cyanoacrylates, benzotriazoles like UV-328 often offer superior performance in terms of light stability and longevity. While benzophenones are cost-effective and widely used, they can sometimes exhibit migration issues and may have a more limited absorption spectrum. Cyanoacrylates are very efficient but can be sensitive to hydrolysis. UV-328, with its robust chemical structure, offers a balanced profile of high UV absorbance, good thermal stability, and low volatility, making it ideal for applications requiring long-term protection.

The specific chemical structure of UV-328, with its dipentylphenyl substituents, contributes to its excellent solubility and compatibility with various polymer matrices, including polyolefins, polyesters, and styrenics. This broad compatibility means that manufacturers can rely on it for diverse product lines. When you search for 'UV absorber price,' it's important to consider not just the initial cost but also the long-term performance benefits. A higher upfront cost for a superior UV absorber like UV-328 can lead to significant savings by extending product life and reducing the need for premature replacement.

For businesses looking to purchase this advanced UV stabilizer, engaging with a reputable manufacturer and supplier in China is a strategic move. We offer UV-328 (CAS 21615-49-6) with guaranteed high purity, ensuring that your formulations receive the maximum benefit from its protective properties. Our role as a direct supplier allows us to offer competitive prices for bulk orders, making advanced material protection more accessible. We understand that consistent quality and reliable supply are critical for industrial operations, and we are dedicated to meeting these demands. Choosing the right UV absorber is a technical decision that directly impacts product quality and market competitiveness. We are here to support your selection with expert knowledge and dependable sourcing.