SiwoPUD®-917HB

When durability, adhesion, and surface integrity are non-negotiable, SiwoPUD-917HB steps up as a high-performance solution engineered for modern metal coating challenges. This aqueous, aliphatic polyurethane dispersion is built on a foundation of polycarbonate and silicone chemistry, designed to meet demanding application requirements with consistency and precision.

What sets SiwoPUD-917HB apart is its unique combination of medium film hardness and excellent adhesion to metal substrates, making it a standout performer in the field of metal surface treatments and coatings. Whether you’re coating tools, appliances, machinery, or structural components, this product delivers a protective barrier that doesn’t crack under pressure.

The dispersion is supplied at 35% solid content in water, offering a user-friendly application while forming a strong, cohesive film. It exhibits a translucent appearance with a pH range between 7.0 and 9.5, ensuring formulation compatibility across a wide spectrum of water-based systems. With a viscosity of ≤300 mPa·s and a mean particle size of ≤100 nm, it provides smooth application and uniform film formation, even on complex surfaces.

From a mechanical standpoint, SiwoPUD-917HB offers exceptional resilience, with elongation ranging from 400–500% and a tensile strength of 16.1 MPa. Its 100% modulus sits at 3.0 MPa, striking a fine balance between flexibility and structural toughness. The product cures quickly too, with a dry-to-touch time of ≤30 minutes and a through-dry time of ≤60 minutes, ideal for production environments that require fast turnaround.

Beyond strength and flexibility, SiwoPUD-917HB brings a host of performance benefits to the table: it’s non-yellowing, features excellent heat resistance, stands up to abrasion and wear, and demonstrates robust alkali resistance. This makes it ideal not just for aesthetic preservation, but also for extending the life and performance of metal surfaces in aggressive environments.

The dispersion contains 7% DEF as its organic solvent and has a glass transition temperature (Tg) of -25°C, allowing it to remain functional in a broad range of environmental conditions. With good shear stability and no added preservatives, it’s a responsible, reliable choice for industrial coatings looking to phase out solvent-heavy options without compromising on performance.

Whether you’re developing a new line of industrial-grade metal coatings or upgrading an existing formulation, SiwoPUD-917HB gives you the technical foundation to succeed.