ETERNACOLL^® polycarbonate diols: Long-lasting performance for polyurethanes

ETERNACOLL^® is UBE’s high-performance line of polycarbonate diols (PCDs), designed to significantly improve the durability, resistance, and mechanical performance of polyurethane materials. Thanks to their linear structure and hydroxyl end groups, these diols form robust molecular chains that outperform conventional polyether and polyester polyols, especially in heat, hydrolysis, and chemical resistance.

This product family includes a variety of grades suitable for both rigid and flexible PU systems. Solid grades such as UH provide high strength and thermal stability, ideal for molded parts and structural components. Liquid types like PH ensure softness and flexibility, while carbonate-ester grades such as UHC improve adhesion and elasticity. Other grades, including UM, UC, and UT, offer tailored properties like scratch resistance and low-temperature flexibility, depending on application needs.

Polyurethanes made with ETERNACOLL^® maintain their physical integrity even after exposure to heat, moisture, oil, and weathering, delivering superior long-term performance. These qualities make them ideal for demanding industries such as automotive, coatings, adhesives, and elastomers, where longevity and material stability are critical.

With a broad range of molecular weights and physical forms, ETERNACOLL^® enables formulators to fine-tune both processing behavior and end-use performance.

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💪 The advantages of using polycarbonate diols over traditional polyols in polyurethane formulations.