What are the key properties provided by ETERNACOLL^® polycarbonate diols and ETERNATHANE^® polycarbonate-based urethane prepolymers to polyurethane?

A key advantage of using ETERNACOLL^® polycarbonate diols and ETERNATHANE^® polycarbonate-based urethane prepolymers for your polyurethane material is that it retains its original properties and performance over time. It can withstand extreme environmental conditions such as temperature highs and lows, humidity, stain and chemical aggressions while at the same time guaranteeing durable high performance.

Key properties include:

Outstanding water resistance

Increased water/hydrolysis resistance makes ETERNACOLL ^® polycarbonate diols and ETERNATHANE ^® polycarbonate-based urethane prepolymers-based polyurethane the leading Diol for this property. The advantage of ETERNACOLL ^® polycarbonate diols and ETERNATHANE ^® polycarbonate-based urethane prepolymers-based polyurethane is that it is capable of resisting very humid conditions whilst remaining intact after lengthy exposure to water and humidity.

Superior adhesion

A critical property of polyurethane adhesives is of course adhesion as measured by T-Peel and Lap-shear strength. ETERNACOLL ^® polycarbonate diols and ETERNATHANE ^® polycarbonate-based urethane prepolymers formulated adhesives, sealants and coatings show superior results for these properties compared to standard diols.

Chemical & stain resistance

Elastomers can fade, discolor and stain over time when they are exposed to harsh solvents and fluids. To minimize the impact of this damage, ETERNACOLL ^® polycarbonate diols and ETERNATHANE ^® polycarbonate-based urethane prepolymers are designed to improve chemical and stain resistance of your polyurethane formulations to optimize durability and performance.
ETERNACOLL ^® polycarbonate diols and ETERNATHANE ^® polycarbonate-based urethane prepolymers also provide excellent stain resistance, giving you access to highly durable polyurethane-based formulations that can better withstand staining over time and with exposure.

High thermal stability

If temperature resistance is essential for your material formulations then ETERNACOLL ^® polycarbonate diols and ETERNATHANE ^® polycarbonate-based urethane prepolymers is the technology you need! The excellent heat resistance provided by ETERNACOLL ^® polycarbonate diols and ETERNATHANE ^® polycarbonate-based urethane prepolymers leads to very high thermal stability polyurethane compared to standard Polyester and Polyether Diols.

Enhanced mechanical properties

Tensile strength and hardness are key properties of polyurethane formulations. When compared with standard Diols, formulating polyurethane with ETERNACOLL ^® polycarbonate diols and ETERNATHANE ^® polycarbonate-based urethane prepolymers enables maximum results from your elastomers via its higher performing mechanical properties.

Higher scratch & abrasion resistance

Durability of polyurethane elastomers is often related to scratch and abrasion resistance. Determination of ETERNACOLL ^® polycarbonate diols and ETERNATHANE ^® polycarbonate-based urethane prepolymers-based polyurethane film hardness with a pencil test demonstrates that ETERNACOLL ^® polycarbonate diols and ETERNATHANE ^® polycarbonate-based urethane prepolymers-based polyurethane has a higher hardness and therefore an increased scratch resistance than benchmark Diols.

Superior gloss retention

Long-lasting gloss retention, with no change to initial properties even after exposure to extreme environments is a common requirement for polyurethane coatings. ETERNACOLL ^® polycarbonate diols and ETERNATHANE ^® polycarbonate-based urethane prepolymers formulated polyurethane demonstrates better retention of gloss and greater durability compared to standard Polyester and Polyether Diols after ageing under various heat conditions.

Flexible adhesion using blends

Combining ETERNACOLL ^® polycarbonate diols and ETERNATHANE ^® polycarbonate-based urethane prepolymers and standard diols to create diol blends is an efficient way to enhance the adhesion properties of your polyurethane.
The cost / adhesion performance ratio can be customized to your needs with approximate standard diols content of 10-50% wt. ETERNACOLL ^® polycarbonate diols and ETERNATHANE ^® polycarbonate-based urethane prepolymers are fully miscible with most of standard diols and when combined to form diol blends, the adhesion is much greater compared to standard diols.