SiwoPUD®-OH-1538

Built Tough for Surfaces That Work Hard

Characteristics:

Aqueous, aliphatic hydroxy-functional polyurethane dispersion based on polyester.

Supplied as:

35% in water

Storage:

The dispersion should be stored in a frost-free place in tightly sealed containers. It contains no preservative.

Application:

Not all polyurethane dispersions are made for softness—OH-PUD-1538 is here for when you need hard, resilient, and chemically resistant. Formulated with an Aliphatic/Polyester backbone and a solid content of 35±1%, this high-performance dispersion is made to hold its own in the most demanding environments.

Where it really shines is in its crosslinking versatility. When combined with a water-dispersible polyisocyanate crosslinker, the resulting film boasts excellent hardness, outstanding water resistance, and superior alcohol resistance. Looking for something tougher? Cure it with an amino resin under heat, and it steps up again—perfect for high-performance finishes that need to endure long-term exposure to wear and chemicals.

OH-PUD-1538 is NMP-free, making it an environmentally responsible choice for manufacturers seeking lower VOC options without sacrificing durability or performance. With a mechanical strength of 2.5 MPa, it delivers a robust coating film that’s hard without being brittle.

Whether you’re formulating water-based wood coatings, floor paints, or industrial protective layers, OH-PUD-1538 offers the kind of dependable performance that stands up to traffic, moisture, and solvents. It’s especially well-suited for environments where surface protection and finish quality are non-negotiable.

So if you’re looking to bring next-level resistance and hardness to your water-based coating systems, OH-PUD-1538 is your go-to workhorse.