Sinomer® VEEA, chemically known as 2-(2-Vinyloxyethoxy)ethyl acrylate (CAS: 86273-46-3), is a high-purity, difunctional monomer that features both an acrylate and a vinyl ether group within a single molecule. This unique design grants it a hybrid curing capability, making it a versatile and high-performance component in advanced radiation-curable formulations for coatings, inks, adhesives, and electronic materials.
Unlike conventional monomers with a single reaction pathway, Sinomer® VEEA offers two distinct polymerization mechanisms:
Free-Radical Polymerization (via the acrylate group): Provides rapid cure speed and contributes to high crosslink density, resulting in excellent surface hardness and chemical resistance.
Cationic Polymerization (via the vinyl ether group): Enables polymerization that is inherently less susceptible to inhibition by atmospheric oxygen. This allows for deeper through-cure and eliminates surface tackiness.
The synergy of these mechanisms in one molecule allows formulators to create systems that cure more completely and consistently, overcoming classic limitations of pure free-radical UV systems.
Overcomes Oxygen Inhibition: The cationic cure pathway significantly reduces oxygen interference, ensuring tack-free surfaces and excellent cure even for thin films. This is particularly valuable for applications requiring flawless surface quality.
Balances Material Properties: VEEA acts as an effective reactive diluent. Its structure helps reduce system viscosity for better processability while simultaneously enhancing flexibility (by lowering the glass transition temperature, Tg) and improving adhesion to various substrates such as plastics, metals, and wood.
Low Shrinkage & Good Stability: It contributes to lower polymerization shrinkage compared to many highly functional acrylates, which minimizes internal stress and improves dimensional stability in precision applications.
Additional Practical Benefits: As noted in its technical specifications, Sinomer® VEEA is characterized by low acid value, very low skin irritation potential, and exhibits no undesirable dark reaction, enhancing its safety and ease of use in manufacturing.
Sinomer® VEEA' s properties make it suitable for a wide range of demanding applications:
High-Performance Coatings: UV-curable wood, plastic, and industrial metal coatings benefit from its combination of high gloss, scratch resistance, adhesion, and durability.
Electronic & Optical Materials: Its excellent electrical insulation properties, thermal stability, and optical clarity are advantageous in conformal coatings, solder masks, optical fiber coatings, and semiconductor encapsulants.
Inks & 3D Printing: Serves as an efficient reactive diluent in various ink systems and can improve toughness and interlayer adhesion in photopolymer resins for stereolithography (SLA/DLP) 3D printing.
Adhesives & Specialist Resins: Used in formulating UV-curable adhesives with strong bonding strength and flexibility. Its properties also support applications in specialty areas requiring good biocompatibility and low VOC emissions.
| Property | Specification / Typical Value |
|---|---|
| Chemical Name | 2-(2-Vinyloxyethoxy)ethyl acrylate |
| CAS No. | 86273-46-3 |
| Appearance | Colorless to light yellow transparent liquid |
| Acid Value | ≤ 0.2 mg KOH/g |
| Viscosity @ 25°C | 3 - 30 mPa·s |
Sinomer® VEEA represents a strategic material choice for formulators aiming to push the boundaries of performance in radiation-curable products. By solving fundamental challenges like oxygen inhibition and balancing key material properties, it enables the development of more efficient, durable, and reliable coatings, inks, and adhesives for leading-edge industries.
Sinocure Chemical Group produces Sinomer® VEEA to the highest purity standards, ensuring batch-to-batch consistency for your most critical formulations. It represents a smart investment in product performance, enabling you to develop coatings, inks, and adhesives that are more durable, efficient, and reliable.
Discover how Sinomer® VEEA can be the key to your next breakthrough formulation.
