Hyperbranched Polyester Acrylate
Hyperbranched Polyester Acrylate is a multi-functional acrylate oligomer with a dendritic polyester core and high peripheral acrylate functionality (6–16 per molecule). The compact globular architecture delivers unusually low viscosity relative to its molecular weight and functionality, enabling high-solids UV formulations without heavy reactive diluent loading. Cured films exhibit fast cure rate, low shrinkage, high scratch resistance, and excellent adhesion to difficult substrates.
Especificaciones Técnicas
| Acid Value | ≤5 mg KOH/g |
| Appearance | Pale yellow viscous liquid or solid |
| Volatile Content | ≤1% |
| Viscosity (60 °C) | 5,000–50,000 mPa·s (grade-dependent) |
| Acrylate Functionality | 6–16 (generation-dependent) |
Aplicaciones
- High-solids and 100%-solid UV coatings for wood and plastic
- UV overprint varnishes for flexible packaging
- Scratch-resistant hard coatings for automotive interior trim
- UV-curable graphic arts inks and varnishes
- UV adhesives requiring fast cure and low shrinkage
Características Principales
- Hyperbranched Polyester Acrylate delivers uniquely low viscosity for its high functional density
- High acrylate functionality (6–16 per molecule) enables extremely fast UV cure response
- Low cure shrinkage due to compact pre-formed dendritic architecture
- Broad substrate adhesion including metal, glass, and difficult-to-bond plastics
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