SiwoPUD®-355F

Soft, Strong, and Solvent-Free—Your Go-To for Flexible Leather and Textile Coatings

Characteristics:

Aqueous, aliphatic polyurethane dispersion based on polyester and polyether.

Supplied as:

35% in water

Storage:

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

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Application:

When flexibility meets performance, you get PUD-355F—a waterborne polyurethane dispersion designed to coat and protect without compromising feel. Engineered for industries that demand both comfort and durability, this aliphatic PUD brings a superior soft touch with the performance backbone to match.

The film it forms is very soft and highly elastic, perfect for applications in leather and textile coatings where stretch, comfort, and a smooth finish are critical. Whether you’re coating synthetic leather for apparel or reinforcing technical fabrics, PUD-355F delivers a lightweight yet resilient layer that moves with the material it’s protecting.

What sets it apart? Let’s look at the numbers. With a solid content of 35±1%, this formulation offers an efficient film build with minimal weight. Its mechanical properties include an impressive elongation of 1300–1400%, tensile strength of 4.9 MPa, and modulus at 100% of 0.65 MPa—which means it stretches far, resists tearing, and stays supple under stress.

Need durability? You’ve got it. PUD-355F shows excellent adhesion, abrasion resistance, and hydrolysis resistance, along with reliable water resistance—ideal for products exposed to movement, moisture, or wear over time.

And the best part? It’s completely NMP-free, making it an eco-conscious choice that doesn’t sacrifice performance for sustainability.

From soft leatherwear to performance textiles, PUD-355F is built to stick, stretch, and stand the test of time.