2-Hydroxyethyl Methacrylate (HEMA)
2-Hydroxyethyl Methacrylate, commonly referred to as HEMA (CAS 868-77-9), is a versatile functional monomer characterized by its dual-functional structure. As a clear, colorless liquid, it features a polymerizable methacrylic group and a reactive hydroxyl group. This unique configuration allows it to bridge the gap between hydrophobic polymer backbones and hydrophilic environments, making it a critical building block in the synthesis of specialized polymers and copolymers.
In industrial and research settings, HEMA is valued for its high reactivity and its ability to impart hydrophilicity, improve adhesion, and facilitate cross-linking. Due to its propensity for spontaneous polymerization, it is typically supplied with a stabilizer such as MEHQ. Handling requires standard safety protocols for methacrylates, as the material is a known skin sensitizer. Its solubility in both water and common organic solvents further enhances its utility across diverse chemical formulations and polymerization processes.
• HEMA is a fundamental component in the production of hydrophilic polymers and hydrogels. Its ability to absorb significant amounts of water while maintaining structural integrity makes it the primary monomer for manufacturing soft contact lenses and various biomedical devices that require high oxygen permeability.
• In the coatings and adhesives industry, this monomer is utilized to enhance the performance of thermosetting resins. By incorporating HEMA into acrylic or vinyl acetate copolymers, manufacturers can improve scratch resistance, solvent resistance, and adhesion to metallic or plastic substrates. It also serves as a reactive diluent in UV-curable systems.
• The material plays a significant role in the formulation of dental restorative materials, including bonding agents, sealants, and composite resins. Its hydroxyl group facilitates chemical bonding to tooth structures, ensuring the stability of dental repairs.
• Beyond these applications, HEMA is employed as a finishing agent in the textile and paper industries. It helps modify fiber surfaces to improve dye receptivity, moisture management, and soil release properties, contributing to the functional enhancement of various consumer and industrial fabrics.
Product Name: 2-Hydroxyethyl Methacrylate (HEMA)
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