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Epoxidized Soybean Oil Acrylate 6720: A High-Efficiency UV Coating Solution for Paper and Wood
In the UV coatings industry where efficiency and environmental performance are paramount, Epoxidized Soybean Oil Acrylate 6720 stands out with five core advantages: low viscosity, moderate reactivity, excellent yellowing resistance, soft cured film, and superior wetting on substrates and pigments/fillers. It is an ideal solution for surface finishing on substrates such as paper, wood, and PVC—offering both high quality and excellent process adaptability to enable cost-effective, value-added production.
With a viscosity below 500 cps, 6720 offers excellent flow and application flexibility. It is easily compatible with high-speed coating methods like roll and curtain coating, minimizing overspray and material waste while increasing production efficiency by over 20%.
Balanced photoreactivity enables controlled curing within 8-12 seconds, avoiding internal stress from overly rapid crosslinking. This ensures stable production throughput and is particularly well-suited for multi-layer coating systems that require precise layer stacking.
Derived from natural soybean oil and enhanced with anti-yellowing technology, 6720 maintains excellent clarity under long-term UV exposure with ΔE < 1.5. It preserves the brightness and visual appeal of paper and wood coatings, meeting the high color stability demands of book covers and premium furniture finishes.
The cured film is flexible and resistant to cracking, passing bending tests (1 mm mandrel) without damage. This makes it ideal for deformable substrates such as paper and soft PVC, preventing brittle fractures due to substrate movement and extending the lifespan of end-use products.
6720 offers excellent wetting on porous wood, fibrous paper, and pigments/fillers like titanium dioxide and calcium carbonate. Adhesion improves by 35%, significantly reducing defects like pinholes and color float. Its compatibility with high-solids formulations supports lower overall system costs.
| Parameter | Specifications |
|---|---|
| Resin type | Epoxy Acrylate 6720 |
| Appearance | Transparent viscous liquid |
| Viscosity（mPa.s） | 8000~16000(25℃) |
| Functionality | 2 |
| Chrominance（Pt-Co) | ≤1000 |
| Acid value(mgKOH/g) | ≤12 |
High gloss, anti-curl performance that enhances print durability and visual quality.
Fast penetration into wood grain with excellent sealing, reducing topcoat usage by up to 20%.
Flexible and aging-resistant, ideal for complex curved surfaces, minimizing delamination risk.
Compatible with waterborne systems and compliant with food-contact safety standards.
| Packaging | 20 / 220 (kg) |
| Warranty Period | 180 days |
| Storage Conditions | This product should be stored and transported in dark opaque steel drums or containers containing corrosion-resistant and solvent resistant coatings. Leave at least 15% space inside the container filled with air. Packaging should be stored in a cool environment below 35 ℃, and exposure to sunlight is strictly prohibited. |
It is widely used as a UV varnish for paper, a wood UV primer, a PVC decorative coating for complex curved surfaces, and in eco-friendly packaging coatings compatible with waterborne systems.
With a viscosity under 500 cps (and a technical viscosity rating of 8000~16000 mPa.s at 25℃), it provides excellent flow and wetting. In wood application, it seals fast to reduce topcoat usage by up to 20% and increases high-speed coating production efficiency by over 20%.
Yes. The cured film is highly flexible, passing a 1 mm mandrel bending test without cracking. It also features anti-yellowing technology maintaining a ΔE < 1.5 under long-term UV exposure, ensuring high color stability.
It features moderate reactivity that enables controlled curing within 8-12 seconds. This prevents internal stress associated with over-rapid crosslinking and supports precise layer stacking in multi-layer coating systems.
It must be stored in dark, opaque steel drums or containers that are corrosion- and solvent-resistant. The container must leave at least 15% headspace filled with air, stored in a cool environment below 35 ℃, and kept completely out of direct sunlight.
The product is supplied in either 20 kg or 220 kg package sizes and carries a warranty period of 180 days when kept under recommended storage conditions.
