SiwoPUD®-916HB

If you’re working with ABS, PVC, plastic, or rubber substrates and need a waterborne coating that delivers serious performance without compromising clarity or flexibility, SiwoPUD-916HB is your answer. This aqueous, aliphatic polyurethane dispersion based on polycarbonate is designed to provide a coating that holds strong, looks sharp, and stays stable under pressure.

With a non-volatile content of 35±1%, SiwoPUD-916HB forms a robust yet flexible film that performs across a wide range of applications. Its medium hardness makes it ideal for surfaces that require resilience without brittleness. The translucent appearance of the dispersion contributes to its aesthetic appeal, especially on light-colored or glossy substrates.

Where this PUD really shines is in its mechanical performance. The cured film achieves elongation between 500–600%, giving it the stretch needed for dynamic surfaces while maintaining structural integrity. Its tensile strength of 14.4 MPa and 100% modulus of 2.4 MPa strike the perfect balance between flexibility and strength. With a glass transition temperature (Tg) of -25°C, it remains flexible even in low temperatures—critical for outdoor or automotive use.

Fast curing is another standout feature. SiwoPUD-916HB dries to the touch in under 30 minutes and fully cures in 60 minutes, making it ideal for high-throughput production environments. It also resists yellowing over time, maintaining a non-yellowing finish even under UV exposure or heat.

Despite containing 7% organic solvent, the dispersion maintains a pH of 7.0–9.5, is shear stable, and holds up to 5 freeze/thaw cycles without degradation. Plus, with a viscosity ≤200 mPa·s and mean particle size ≤100 nm, it applies smoothly and uniformly across surfaces. For best results, store it in frost-free conditions in tightly sealed containers, as it contains no preservatives.

SiwoPUD-916HB is engineered for coatings that demand adhesion, clarity, and durability—perfect for consumer electronics, automotive interiors, flexible packaging, and more. If you’re looking for a coating solution that delivers sleek results with technical muscle, SiwoPUD-916HB should be on your radar.