Understanding the science behind photostabilization is key to creating materials that resist degradation from light, particularly ultraviolet (UV) radiation. UV absorbers are essential additives that protect polymers, coatings, and other sensitive materials. Among the most advanced options available is 2-[3-(2H-Benzotriazol-2-yl)-4-hydroxyphenyl]ethyl Methacrylate, identified by its CAS number 96478-09-0. As a leading fine chemical manufacturer and supplier in China, we are dedicated to providing the essential components that enable cutting-edge material science.

The core function of this benzotriazole-based methacrylate is its ability to absorb harmful UV radiation. The mechanism is elegant and efficient: when a UV photon strikes the molecule, it excites an electron. In the case of benzotriazoles, this excitation triggers an ultrafast process known as Excited-State Intramolecular Proton Transfer (ESIPT). The proton from the hydroxyl group adjacent to the benzotriazole ring rapidly transfers to a nitrogen atom within the ring. This creates a temporary keto-tautomer that is in a lower, more stable energy state. The energy is then released harmlessly as heat, often on a sub-picosecond timescale. This process effectively shields the surrounding material from photo-induced damage.

What sets 2-[3-(2H-Benzotriazol-2-yl)-4-hydroxyphenyl]ethyl Methacrylate apart is its additional methacrylate functional group. This chemical feature allows the molecule to participate in polymerization reactions. When incorporated into a polymer matrix, it becomes chemically bonded to the polymer chains. This permanent anchoring means the UV absorber cannot migrate, extract, or volatilize from the material over time. This is a significant advantage over traditional, non-reactive UV stabilizers that can leach out, diminishing their effectiveness and potentially causing other issues.

For purchasing managers and R&D scientists, the implications are clear: superior, long-lasting protection. The compound, typically a white to yellow crystalline powder with a melting point of 96-98°C, has a molecular formula of C18H17N3O3 and a molecular weight of 323.35 g/mol. Its ability to integrate into acrylics, polyurethanes, and other polymer systems makes it ideal for enhancing the durability of plastics, coatings, adhesives, and even sensitive biomedical applications like intraocular lenses.

When considering where to buy this advanced photostabilizer, our position as a China-based manufacturer and supplier offers a distinct advantage. We provide high-purity material (typically 98%+) at competitive prices, ensuring reliable sourcing for your industrial or research needs. The effectiveness of this monomer in preventing UV degradation, coupled with its reactive nature, makes it a crucial ingredient for products requiring extended outdoor exposure or resistance to light-induced breakdown.

By understanding the fundamental science of how 2-[3-(2H-Benzotriazol-2-yl)-4-hydroxyphenyl]ethyl Methacrylate works, formulators can harness its capabilities to create more robust, durable, and long-lasting products. We encourage you to reach out to us for a quotation and to discuss how this sophisticated UV absorber can benefit your specific applications. Invest in superior photostabilization by choosing this advanced methacrylate monomer from a trusted supplier.