SiwoPUD-903 is a high-performance waterborne polyurethane dispersion from SIWO US, engineered specifically for floor care and cleaning applications. This aliphatic polyurethane resin is formulated as a versatile surface care polymer, making it ideal for use in floor polishes, protective coatings and cleaning agents. In detergents, floor coatings or maintenance products, SiwoPUD-903 delivers an exceptionally durable, high-gloss finish. As part of SIWO’s portfolio of eco-friendly PUDs, it combines industry-leading durability and gloss with a low-VOC, sustainable profile.
When cured, SiwoPUD-903 forms a tough, resilient film that stands up to daily wear. The polymer resists abrasion, impact and scuffing, keeping high-traffic floors protected under heavy use. It also exhibits excellent chemical resistance – remaining unchanged by common household cleaners, alkaline detergents or alcohol-based sanitizers. As BASF notes for modern floor finishes, “effective chemical resistance is a big focus” in today’s environments, and SiwoPUD-903 meets this need with significantly improved resistance over traditional finishes. Floors treated with SiwoPUD-903-based formulations retain a bright, long-lasting gloss; the cured film resists yellowing and color fading, so the shine endures through repeated cleanings. In short, SiwoPUD-903 yields a premium floor finish that resists everyday chemicals and foot traffic without dulling.

SiwoPUD-903 delivers multiple performance and formulation benefits in floor care products. Notable features include:

SiwoPUD-903 is designed for a range of floor and surface care applications. Its performance and formulation flexibility make it useful across multiple product segments:
By tuning the formulation, SiwoPUD-903 can be used in one-component maintenance products or as part of two-component (crosslinked) floor coating systems. In each case, it enhances performance without sacrificing safety or compliance.

A standout feature of SiwoPUD-903 is its environmental profile. As a fully waterborne polyurethane, it eliminates harmful solvents and significantly cuts VOC emissions. This means reduced odor in manufacturing plants and finished products that meet stringent low-VOC standards. The dispersion is formaldehyde-free, heavy-metal-free and phthalate-free, aligning with the latest global regulations and eco-labels. Such attributes support “green” product claims, making SiwoPUD-903 a smart choice for formulators targeting sustainable or LEED-certified projects. Additionally, its water-based form simplifies workplace safety and cleanup (no solvent fumes or flammability to manage).

In practice, SiwoPUD-903 is used at low dosage levels. As a general guideline, formulations typically include 0–10% by weight of SiwoPUD-903 (calculated on active solids) for cleaning or maintenance products where it acts as a surface care polymer. In concentrated floor finish and polish products, loading ranges around 1–10% to achieve the desired gloss, hardness and soil resistance. Exact use levels depend on the product type and required performance; formulators should adjust within these ranges based on trials. SiwoPUD-903 disperses readily into aqueous or solvent-extended coatings and cleaners, and it can be co-formulated with other resins (acrylics, epoxy emulsions, etc.) to balance cost and property targets.

Compared to conventional materials (such as solvent-borne urethanes or basic acrylic polishes), SiwoPUD-903 offers a unique blend of performance and safety. It achieves the hardness and clarity of solvent polyurethanes but in a waterborne system. Unlike older zinc-crosslinked floor finishes, SiwoPUD-903 requires no heavy metal catalysts, making its stripping waste safer. Its aliphatic chemistry ensures non-yellowing, long-term appearance. Overall, SiwoPUD-903 outperforms many acrylic polymer and solvent-polyurethane coatings in terms of wear, chemical resistance and durability, while delivering the eco-friendly, low-odor advantages that formulators and end users demand.
Ready to upgrade your floor care formulations? Contact SIWO US today to learn more about SiwoPUD-903 and request samples or technical support. Our experts will help you integrate this advanced dispersion into your next-generation floor coatings, cleansers and polishes. Discover how SiwoPUD-903 can provide unmatched durability and sustainability to your products – partner with SIWO US and stay ahead in surface care innovation.
High-Quality Waterborne Polyurethanes That You Can Trust
Send us a message
Join our mailing list to stay in the loop with our latest product news.