SiwoPUD®-Z401

When flexibility, resilience, and environmental compliance matter, SiwoPUD-Z401 rises to the occasion. This aqueous, aliphatic polyurethane dispersion based on polyether delivers a dependable, soft film with outstanding physical properties, making it an excellent choice for manufacturers seeking high-performance coatings without compromising on sustainability.

Supplied as a 40% dispersion in water, SiwoPUD-Z401 balances performance and practicality. Its translucent appearance, non-volatile constituent of 40±1%, and a pH value between 7.0 and 9.5 make it easy to incorporate into various formulations. With a viscosity of ≤1500 mPa·s and mean particle size ≤100 nm, it ensures smooth processing and uniform film formation—key for industries like fabric printing and leather coating.

But what sets SiwoPUD-Z401 apart is its exceptional mechanical profile. With an impressive elongation range of 1300–1400%, this dispersion allows for extreme flexibility and stretchability without cracking or tearing. Its tensile strength of 20.2 MPa and 100% modulus at 1.4 MPa strike an ideal balance between softness and structural integrity. The resulting film is not only soft and resilient, but also holds up exceptionally well under stress.

Designed with practicality in mind, Z401 offers good shear stability, non-yellowing properties, and strong alkali resistance, making it suitable for environments with harsh detergents or alkaline exposure. It also boasts excellent washing fastness and low-temperature folding resistance, ensuring long-term durability in both fashion and industrial applications.

And while it’s built tough, it’s also built responsibly. Free from NMP, NEP, and DMAC, SiwoPUD-Z401 meets modern environmental standards—making it a safe, cost-effective solution for forward-thinking manufacturers.

Store it in frost-free, tightly sealed containers to maintain its integrity. While it contains no preservative, its stability and reliability remain unmatched.

For a next-generation polyurethane dispersion that checks every box—soft feel, durability, environmental safety, and ease of use—SiwoPUD-Z401 is the smart, sustainable choice.