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In the demanding arena of industrial coatings, photocurable polyurethane acrylate 7620 stands out as a core material for high-end applications such as UV vacuum metallization, ultra-wear-resistant coatings, and UV inks. Thanks to its five key properties, it equips products with an "invisible shield" that combines aesthetics and functionality.
Post-curing, the coating achieves a surface hardness of 4H or higher, rivaling sapphire glass, effectively resisting daily scratches. This makes it the preferred choice for smartphone mirror coatings and vacuum-metallized luxury metal logos, delivering a premium "touch-resistant" finish.
Despite its extreme hardness, the flexible molecular chain design enables the coating to withstand 180° bending without cracking. This breakthrough in "hard yet flexible" performance makes it ideal for dynamic applications like foldable smartphone hinge coatings and curved automotive interior surfaces.
Leveraging nano-crosslinking technology, the coating endures over 10,000 wear cycles (Taber abrasion test, CS-10 wheel, 1kg load). It is widely used in high-frequency scenarios such as UV topcoats for premium hardwood flooring and smartwatch dials, combating long-term abrasion.
With dual protection against UV and oxidation, the coating maintains a color difference ΔE <1 even after 500 hours of outdoor exposure. This ensures lasting clarity for white appliances and transparent packaging coatings, eliminating yellowing concerns over decades.
Achieving a 5B rating per ASTM D3359 on metals, glass, and engineering plastics (e.g., PC, ABS), the coating bonds tightly to substrates without primers. This solves delamination challenges in vacuum-metallized coatings on complex geometries.
| Parameter | Specification |
|---|---|
| Resin type | Polyurethane Acrylate 7620 |
| Appearance | Transparent viscous liquid |
| Viscosity (mPa.s) | 9000~15000 (60℃) |
| Functionality | 6 |
| Chrominance (Pt-Co) | ≤80 |
| Acid value (mgKOH/g) | 0 |
Designed specifically to meet high-end performance standards for UV vacuum electroplating, UV ultra wear-resistance coatings, and specialized UV inks.
| 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. |
Post-curing, the coating achieves a surface hardness of 4H or higher, providing sapphire-like protection that prevents everyday scratches on high-end electronics and accessories.
Yes, it features a unique design that balances hardness and flexibility, allowing cured surfaces to withstand 180° bending without cracking. This makes it suitable for curved surfaces and foldable phone hinges.
Polyurethane Acrylate 7620 has a functionality of 6 and displays a viscosity of 9000~15000 mPa.s when measured at 60℃.
Absolutely. The resin offers robust dual protection against UV exposure and oxidation, sustaining a color difference (ΔE) of less than 1 even after 500 hours of continuous outdoor exposure.
It should be kept in dark, opaque steel drums with corrosion-resistant coatings at temperatures below 35℃. Keep the containers filled with at least 15% air volume and strictly avoid exposure to sunlight.
It achieves a top-tier 5B rating according to ASTM D3359 on metals, glass, and major engineering plastics such as PC and ABS, entirely eliminating the need for primers.
