Functional Monomers

2-Ethylhexyl Methacrylate (2-EHMA)

2-Ethylhexyl Methacrylate (2-EHMA) is a high-performance, branched alkyl ester of methacrylic acid that serves as a fundamental building block in modern polymer chemistry. Characterized by its hydrophobic nature and long-chain alkyl structure, this monofunctional monomer is widely recognized for its ability to provide internal plasticization, effectively lowering the glass transition temperature (Tg) of copolymers. This makes it an essential component for manufacturers seeking to enhance the flexibility, impact resistance, and adhesion of their final products. As a clear, colorless liquid, 2-EHMA is primarily utilized in the synthesis of acrylic resins, emulsions, and specialty polymers. Its low volatility and excellent resistance to weathering and UV radiation ensure that it remains a preferred choice for high-solids systems and outdoor-grade coatings. By facilitating seamless integration into radical polymerization processes, 2-EHMA supports the development of durable, water-resistant materials across the automotive, textile, and adhesive industries.

Attributes

Key Features and Benefits

High Purity: Ensures consistent polymerization results and minimizes unwanted side reactions.
Internal Plasticization: Effectively reduces the glass transition temperature to improve film flexibility.
Superior Hydrophobicity: Imparts excellent water and moisture resistance to polymer matrices.
Weathering Resistance: Provides outstanding UV stability and oxidation resistance for long-term outdoor durability.
Low Volatility: Enhances industrial safety and reduces VOC emissions during processing.
Enhanced Adhesion: Promotes strong bonding on low-energy substrates and varied surfaces.
Stabilized Performance: Inhibited with MEHQ to ensure safe transport and extended storage shelf life.

Specifications

Technical Highlights

Physical Appearance: Clear, colorless liquid with a mild ester odor.
Chemical Assay: Typically exceeds 99.0% purity by GC analysis.
Density: Approximately 0.885 g/cm3 at 20 degrees Celsius.
Flash Point: Approximately 92 degrees Celsius, categorized as a combustible liquid.
Solubility: Immiscible in water; highly soluble in common organic solvents like alcohols and ethers.
Boiling Point: Approximately 214 degrees Celsius at 760 mmHg.
Handling Guidelines: Store in a cool, dry, well-ventilated area away from direct sunlight.
Stability: Requires the presence of dissolved oxygen to maintain inhibitor effectiveness and prevent premature polymerization.

Download Technical Data Sheet (TDS)

Practical industry uses

Applications

Surface Coatings: Employed in automotive, marine, and industrial finishes for enhanced durability.
Pressure-Sensitive Adhesives: A key ingredient in tapes and labels requiring high tack and flexibility.
Textile Finishes: Used to improve the hand-feel, water repellency, and softness of fabrics.
Plastics Modification: Functions as a comonomer for impact modification in rigid polymer systems.
UV-Curable Inks: Integrated into radiation-curable formulations for superior adhesion.
Oil Additives: Utilized as a viscosity index improver in high-performance lubricating oils.
Construction Chemicals: Component in waterproof sealants and protective architectural coatings.