2-Hydroxy Ethyl Acrylate (2 – HEA)

2-Hydroxyethyl acrylate, commonly referred to as 2-HEA, is a versatile functional monomer characterized by its dual-reactivity profile, containing both a polymerizable vinyl group and a reactive primary hydroxyl group. This clear, colorless liquid serves as a critical building block in the synthesis of high-performance polymers, particularly thermosetting acrylic resins and UV-curable systems. As a monofunctional monomer, it facilitates the introduction of hydroxyl functionality into polymer backbones, which subsequently enables crosslinking with isocyanates, melamines, or epoxies to enhance mechanical and chemical properties. Its chemical structure, defined by CAS number 818-61-1, provides excellent hydrophilicity and adhesion-promoting characteristics to coatings and adhesives. While highly effective, it requires careful handling due to its sensitivity to polymerization triggered by heat, light, or peroxide contaminants. Typically stabilized with MEHQ to ensure shelf stability, 2-HEA remains a fundamental component for engineers designing advanced surface coatings, automotive finishes, and specialized bio-compatible materials requiring precise functionalization and durability standards.