SiwoPUD®-PUD-6991S

SiwoPUD®-PUD-6991S is an aliphatic polycarbonate waterborne polyurethane dispersion designed for high-performance coating applications. With a solids content of 32 ± 1% and a small particle size, it provides a balanced combination of flexibility, mechanical strength, and coating durability. Its excellent film-forming properties make it a suitable choice for formulators developing durable waterborne polyurethane topcoats.

The coating film offers excellent water resistance, abrasion resistance, weather resistance, and hydrolysis resistance. These properties help maintain coating performance when surfaces are exposed to moisture, repeated friction, and outdoor environmental conditions. Compared with PUD-6992S, PUD-6991S has lower heat resistance and slightly higher surface energy, providing formulators with another performance option when selecting a polyurethane dispersion for specific coating requirements.

PUD-6991S also provides excellent alcohol-rub resistance when used with a suitable crosslinking agent. This makes it a useful resin for coating formulations where resistance to alcohol rubbing and surface wear is important. Its combination of flexibility, water resistance, abrasion resistance, and weatherability supports its use as a topcoat resin across a wide range of applications.

For manufacturers seeking a reliable aliphatic polycarbonate polyurethane dispersion, SiwoPUD®-PUD-6991S offers a practical solution for developing water-based coatings with durable surface protection and balanced film performance.