When your coating needs to shine—literally and figuratively—SiwoPUD-350HB delivers. This aqueous, aliphatic polyurethane dispersion is engineered from a hybrid of polyether and polyester, striking a powerful balance between resilience, flexibility, and clarity. With a solid content of 38±1%, it forms a film that’s not only beautiful to look at, but also built to perform under pressure.
What sets SiwoPUD-350HB apart is its high gloss and high hardness, making it the go-to solution for applications that demand both visual appeal and long-lasting durability. Its film doesn’t just sit pretty—it works hard. Whether you’re coating leather, rubber, or plastic, this dispersion ensures surfaces resist wear, repel water, and hold up under abrasion and stress.
Despite its strength, the film maintains essential flexibility, with an elongation of 300–400% and a tensile strength of 19.4 MPa. This is backed by a sturdy 100% modulus of 5.7 MPa, offering impressive structural integrity without sacrificing elasticity. Its glass transition temperature (Tg) of -20°C helps maintain performance even in cooler conditions, while its translucent appearance provides a clean finish without compromising clarity or texture.
You’ll also find that this dispersion features good shear stability, meaning it can handle the rigors of industrial mixing and application without breaking down. And when it comes to drying time, SiwoPUD-350HB is efficient—dry to the touch in 30 minutes, and fully through-dried within 60 minutes. Best of all, its non-yellowing formula ensures your coatings retain their brilliance over time.
Formulated with 7% organic solvents and a pH range of 7.0 to 9.5, this waterborne dispersion offers the right chemistry for dependable, eco-conscious coating solutions. With a viscosity of ≤300 mPa·s and mean particle size of ≤100 nm, it applies smoothly and consistently across various substrates.
SIWO US Inc. recommends storing this product in frost-free, tightly sealed containers, as it contains no preservative.
From fashion to function, SiwoPUD-350HB is the polyurethane dispersion that brings gloss, grit, and greatness together in one powerful film.
High-Quality Waterborne Polyurethanes That You Can Trust
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