In UV curing, achieving reliable adhesion on untreated PET, PP, and PE has always been a headache. High‑odor monomers like THFA often come with irritation and limited wetting. SINOMER® EMDOA changes that – a low‑odor, low‑viscosity monofunctional acrylate that delivers exceptional adhesion to polyolefins and polyesters without surface pretreatment.
SINOCURE developed SINOMER® EMDOA (2‑ethyl‑2‑methyl‑1,3‑dioxolane‑4‑yl)methyl acrylate to break that trade‑off. With its unique dioxolane ring architecture and carefully balanced hydrophilicity, EMDOA offers a rare combination of low viscosity, extremely low skin irritation, very low odor, and outstanding wetting on low‑surface‑energy plastics – all in one molecule.
EMDOA's molecular weight (200.23) and cyclic dioxolane structure create a steric effect that reduces intermolecular friction, resulting in a naturally low viscosity (5–10 cps at 25°C). At the same time, the ring system locks volatile fragments, suppressing the sharp, irritating smell typical of many acrylates (e.g., THFA). The branched alkyl substituents further lower surface tension, enabling the monomer to spread spontaneously on untreated polyolefin surfaces.
This molecular design translates directly into tangible benefits for formulators and end‑users alike.
PET, PP, PE, and other low‑energy substrates no longer require aggressive primers or corona treatment. EMDOA’s dual affinity – the polar dioxolane oxygen atoms interact with polar sites on plastics, while the acrylate double bond ensures fast radical crosslinking – delivers reliable adhesion in electronic component fixing, flexible film lamination, and structural bonding.
In offset, screen, flexo, or inkjet inks, EMDOA acts as a reactive diluent that lowers formulation viscosity without slowing cure speed. Its low surface tension eliminates pinholes and craters on non‑porous films, and the cured coating remains flexible – no cracking on folded or thermoformed parts.
When used as a co‑monomer (typically 10–30% of resin solids), EMDOA improves overall system toughness and adhesion to metal and glass, while also reducing shrinkage stress. It is an excellent alternative to tetrahydrofurfuryl acrylate (THFA), with a higher molecular weight that further lowers odor and dermal irritation.
| Challenge in UV Formulation | How EMDOA Solves It |
|---|---|
| Aggressive odor during printing or dispensing | Very low odor – operators and end users notice the difference immediately. |
| Skin irritation from manual handling or low‑safety workshops | Low skin irritation – safer for production lines without full automation. |
| Poor adhesion on untreated PP/PE | Excellent wetting and adhesion – no corona or primer needed for many applications. |
| High viscosity making pump feeding difficult | Low viscosity (5–10 cps) – easy to meter and mix. |
| Shrinkage causing warpage on thin films | Lower shrinkage due to the bulky dioxolane ring. |
| Environmental concerns with aquatic toxicity | No aquatic toxicity – a cleaner profile for eco‑conscious brands. |
SINOMER® EMDOA is explicitly designed as a performance substitute for MEDOL‑10 (2‑methyl‑2‑ethyl‑1,3‑dioxolane‑4‑yl)methyl acrylate. It matches or exceeds the dilution efficiency, adhesion, and cure response of MEDOL‑10 while offering consistent quality and stable supply from Sinocure’s production facility.
Appearance: water‑white clear liquid
Viscosity: 5–10 cps (excellent pumpability)
Refractive index (nD25): 1.434 – ideal for optical coatings
MEHQ stabilizer: 500 ± 50 ppm – reliable storage stability
Assay: ≥ 97.5% – high purity for consistent results
The complete specification table, including APHA color, acid value, and detailed test methods, is available in the official TDS.
UV laminating adhesives for PET/PP films – one component, fast cure, no solvent residue.
Screen printing inks on polyolefin bottles – improved adhesion without pre‑treatment.
3D printing resins – reduces viscosity and adds flexibility to tough, rigid formulations.
UV coatings for automotive interior plastics – low odor, good chemical resistance.
As environmental regulations tighten and demand grows for bonding low‑cost, low‑energy plastics, the industry needs monomers that are effective, safe, and easy to process. SINOMER® EMDOA delivers on all three fronts.
By replacing traditional THFA or other monofunctional acrylates with EMDOA, formulators can achieve lower odor, better skin compatibility, superior adhesion to difficult substrates, and smoother processing – all while maintaining fast cure speed and excellent final properties.
Contact Sinocure Chemical Group for samples, technical data sheets, or formulation support.
Info@sinocurechem.com
+86 15668330235
www.sinocurechem.com
