FM-372 is a high-performance methoxy monofunctional acrylate UV monomer engineered to deliver an exceptional balance of curing speed, adhesion, and low shrinkage. Although it is a monofunctional monomer, its curing speed rivals that of trifunctional acrylate monomers-making it a game-changer for UV-curable formulations where fast throughput and superior film properties are essential.
Under LED light sources, FM-372 exhibits outstanding curing performance, producing glossy, dry-to-touch films with excellent surface quality. Its ultra-low viscosity, high toughness, minimal volumetric shrinkage, and remarkable adhesion to a wide range of substrates-including metals, glass, inorganic materials, and engineering plastics-make it a versatile building block for coatings, inks, adhesives, and inkjet applications.
Key Features & Benefits
| Feature | Benefit |
|---|---|
| Monofunctional acrylate | Low volumetric shrinkage, reduced internal stress, excellent dimensional stability |
| Curing speed approaching trifunctional monomers | Fast LED/UV cure, increased production throughput |
| Ultra-low viscosity (5 cPs at 25°C) | Outstanding dilution capability, ideal for solvent-free systems |
| High toughness | Durable, flexible cured films with excellent mechanical properties |
| Low volume shrinkage | Prevents cracking, peeling, and warping-especially in thick-film applications |
| Exceptional adhesion | Bonds strongly to metals, glass, ceramics, plastics, and coated surfaces |
| Glossy, dry-to-touch film | Superior surface finish and aesthetics |
| LED-compatible | Optimized for energy-efficient LED curing systems |
Technical Specifications
| Property | Value |
|---|---|
| Glass Transition Temperature (Tg) | -24°C |
| Functionality | 1 |
| Surface Tension | 37 Dynes |
| Color (Gardner) | ≤ 2 |
| Refractive Index | 1.450 |
| Acid Value (mg KOH/g) | ≤ 1.0 |
| Viscosity at 25°C (cPs) | 5 |
These specifications position FM-372 as an exceptionally low-viscosity monomer with excellent optical clarity and balanced mechanical properties, suitable for demanding UV-curable systems.
Applications
UV Coatings
FM-372 is recommended as the primary monomer in solvent-free UV coating formulations. It rapidly reduces formulation viscosity while maintaining the low shrinkage characteristic of monofunctional monomers-yet delivers a relatively high crosslink density that significantly improves adhesion. It enhances both substrate adhesion and intercoat adhesion across a variety of surfaces.
UV Inkjet
Formulated as the primary film-forming material, FM-372 is fully compatible with LED light sources. It enables direct printing onto diverse substrates and coated surfaces, delivering superior surface performance including gloss, hardness, and durability.
UV Adhesives
Recommended as a complementary component, FM-372 provides low shrinkage-particularly beneficial in thick bond lines-along with fast curing and excellent low-temperature performance.
UV Inks
As a blending component, FM-372 offers strong dilution capability and promotes adhesion. It is recommended as the primary dissolving monomer for pure acrylic resins in UV ink formulations.
Compatibility
Monomers: FM-372 exhibits excellent solubility with all types of monomers, providing broad formulating latitude.
Solvents: Fully miscible with all common organic solvents.
Polymers: Completely compatible with pure acrylic, polyester, epoxy, acrylic, and other resins. Formulation ratios can be adjusted according to specific application requirements.
This wide compatibility enables formulators to incorporate FM-372 seamlessly into existing UV-curable systems without compromising performance.
Why Choose FM-372?
In UV-curable formulations, the trade-off between curing speed and shrinkage has long been a challenge. Multifunctional monomers cure quickly but generate high shrinkage and internal stress, while monofunctional monomers offer low shrinkage but cure slowly. FM-372 breaks this paradigm-delivering the low shrinkage of a monofunctional monomer with the curing speed of a trifunctional acrylate.
This unique combination, together with its ultra-low viscosity, strong adhesion, and LED compatibility, makes FM-372 the ideal choice for formulators seeking high-performance, energy-efficient, and dimensionally stable UV-curable systems.
Packaging & Storage
Packaging Options: 20 kg drums and 200 kg drums
Storage Recommendations: Store in a cool, dry, well-ventilated area away from direct sunlight and heat sources. Keep containers tightly closed when not in use. Refer to the Safety Data Sheet (SDS) for complete handling and storage instructions.
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