Polycarbonate Diol (PCDL) is a premium-grade specialty polyol engineered for high-performance polyurethane systems. Compared with conventional polyester polyol and polyether polyol, Polycarbonate Diol (PCDL) delivers significantly enhanced durability and long-term stability.
Thanks to its unique carbonate backbone structure, Polycarbonate Diol (PCDL) provides excellent resistance to hydrolysis, heat, oxidation, and chemicals. These properties make Polycarbonate Diol (PCDL) an ideal raw material for demanding industrial and specialty applications.
|
Product |
PCDL-981 |
PCDL-980 |
PCDL-961 |
PCDL-960 |
|
Appearance (at room temperature) |
White solid |
White solid |
Viscous liquid |
Viscous liquid |
|
Number Average Molecular Weight (Mn) |
1000 |
2000 |
1000 |
2000 |
|
Hydroxyl Value (mg KOH/g) |
112 ± 6 |
56 ± 3 |
112 ± 6 |
56 ± 3 |
|
Moisture (%) |
< 0.03 |
< 0.03 |
< 0.03 |
< 0.03 |
|
Viscosity (mPa·s, 75°C) |
360–460 |
2000–2600 |
360–600 |
2200–3000 |
|
Color (Pt-Co) |
< 100 |
< 100 |
< 100 |
< 100 |
|
Melting Point (°C) |
40–50 |
40–50 |
- |
- |
Polycarbonate Diol (PCDL) is extensively used in polyurethane dispersions (PUD) for high-performance water-based coatings. Compared to conventional polyols, PUD systems based on Polycarbonate Diol (PCDL) exhibit superior hydrolysis resistance, making them ideal for humid or wet environments. These dispersions provide excellent film-forming properties, strong adhesion to various substrates, and enhanced abrasion resistance. In addition, Polycarbonate Diol (PCDL) improves chemical resistance against cleaning agents and solvents, which is critical for textile coatings, leather finishes, and wood coatings. Its low VOC compatibility also supports environmentally friendly formulations, making it a preferred choice for sustainable coating technologies.
In thermoplastic polyurethane (TPU) applications, Polycarbonate Diol (PCDL) plays a crucial role in enhancing durability and performance. TPU materials produced with Polycarbonate Diol (PCDL) demonstrate outstanding mechanical strength, flexibility, and long-term resilience under dynamic stress. Compared with polyester- and polyether-based TPU, PCDL-based TPU offers significantly improved resistance to hydrolysis, heat aging, and UV exposure. This makes it particularly suitable for demanding applications such as cables, films, hoses, and wearable devices. Furthermore, Polycarbonate Diol (PCDL) contributes to better transparency and surface quality, which is essential for high-end TPU products used in electronics and consumer goods.
Polycarbonate Diol (PCDL) is widely applied in synthetic leather resins for premium PU leather production. Polyurethane systems based on Polycarbonate Diol (PCDL) deliver a superior balance of softness, elasticity, and mechanical strength, resulting in a more natural leather-like feel. Its excellent hydrolysis resistance ensures long-term durability, especially in footwear, automotive interiors, and furniture upholstery exposed to moisture and temperature fluctuations. In addition, Polycarbonate Diol (PCDL) enhances resistance to yellowing and aging, maintaining aesthetic quality over time. These advantages make it a key raw material for high-end synthetic leather targeting luxury and performance-driven markets.