In the pursuit of ultimate appearance and performance in UV coatings, an effective leveling agent is key to achieving a perfect film. Sinocure's AgeSin® UV-D7500 is precisely designed to meet high-end challenges as a radiation-curable reactive silicone leveling agent. It not only significantly enhances the slip and smoothness of the coating surface but also, through participation in the cross-linking reaction, delivers lasting and comprehensive performance enhancements to the coating.
The core of AgeSin® UV-D7500 lies in the acrylate functional groups at the ends of its molecules. This design allows it to seamlessly participate in the UV curing process, permanently bonding to the coating network via chemical bonds. This avoids potential migration or leaching issues associated with traditional non-reactive additives, ensuring long-term performance stability.
The excellent properties it imparts to coatings include:
Exceptional Slip and Anti-Blocking: Effectively reduces the surface friction coefficient, provides a smooth feel, and prevents coatings from blocking when stacked or under pressure.
Remarkable Scratch Resistance: Enhances the surface toughness of the film, significantly improving resistance to daily scratches.
Efficient Defoaming and Deaeration: Helps eliminate microfoams during curing, resulting in a dense and smooth film appearance.
Excellent Anti-Fouling Properties: The formed dense surface effectively resists stains from oil, ink, etc., making it easy to clean.
Due to its specific design, AgeSin® UV-D7500 has limited compatibility with high-gloss clear coat systems. This makes it an ideal choice for pigmented coatings, matte, or satin clear coat formulations, where it can address surface defects without affecting clarity.
| Item | Specification |
|---|---|
| Chemical Composition | Reactive silicone leveling agent with acrylate functional groups |
| Appearance | Light to dark green clear liquid |
| Active Substance | 100% |
| Density (25°C) | 0.96 - 1.02 g/ml |
| Viscosity (25°C, Tu-4 cup) | 5 - 50 seconds |
| Recommended Addition | 0.1% - 1.0% of total formulation weight |
To meet applications with the most stringent requirements for leveling, we recommend combining AgeSin® UV-D7500 with AgeSin® UV-D7220 from the same series. UV-D7220 specializes in promoting flow and leveling. Used together, they achieve a synergistic "1+1>2" effect.
The following performance profile provides a reference for selection, and the subsequent case study demonstrates the practical effects of different combinations in a specific system.
1. Application Performance Profile
| Evaluation Item | Performance Rating |
|---|---|
| Varnish Compatibility | 1 |
| Flow and Leveling | 4 |
| Smoothness | 5 |
| Anti-blocking | 5 |
| Unstable Foam Control | 5 |
| *Note: 0=Poor/None, 5=Excellent.* | |
2. Case Study in UV Matte Lamination
The data below shows the performance in a UV matte lamination system with a fixed 1% addition of UV-D7500 and varying amounts of UV-D7220.
| UV-D7500 Addition | UV-D7220 Addition | Leveling | Oil-based Pen Resistance |
|---|---|---|---|
| 1% | — | 2 | 3 |
| 1% | 0.5% | 3.5 | 3 |
| 1% | 1.0% | 4 | 3 |
| *Note: 0=Poor/None, 5=Excellent.* | |||
The conclusion is clear: Using UV-D7500 alone provides good basic scratch and stain resistance (oil-based pen test stable at 3 points). However, upon introducing UV-D7220, the leveling of the system improves linearly, significantly increasing from 2 points to 4 points, without sacrificing any stain resistance. This provides formulation engineers with a reliable and flexible tool for fine-tuning film appearance and feel.
AgeSin® UV-D7500 is easy to incorporate. It can be pre-diluted with monomers or solvents from the system and added at any stage of production. We recommend starting formulation trials with an addition level of 0.3% and fine-tuning based on specific requirements for slip, defoaming, and leveling. For matte systems pursuing an extremely smooth surface, experimenting with a combination of 0.5%-1.0% UV-D7220 will yield impressive results.
Contact our technical sales team now to request samples and tailored technical solutions for your specific system. Let the AgeSin® additive series become your secret weapon in developing the next generation of high-end UV coatings.
