Asahi Kasei's polycarbonatediol (PCD)
It can be seen that PCD polyurethanes are hard to decompose when compared to polyether urethanes and polyester urethanes.
Change in the molecular weight of a polyurethane film immersed in hot water at a temperature of 100°C
PCD polyurethanes show high strength retention even after storage at a high temperature.
Change in the property of a polyurethane film stored at 120°C
It can be seen that PCD polyurethanes have a smaller swelling rate due to organic solvent when compared to polyether urethanes and polyester urethanes and copolymerized type DURANOL™ has an excellent swelling rate in particular.
Change in the property of a polyurethane film immersed in oleic acid (23°C) for 1 week
Generally, although PCD polyurethane tends to lack flexibility, use of liquid type DURANOL™ allows improvement of flexibility.
Tensile test of polyurethane
PCD two-component polyurethane paint offers excellentAbrasion resistance of the paint film.
Liquid type DURANOL™ (T5652•G4672 and G3452) offers excellent handling property and solvent solubility.
| Liquid | Solid | ||||
 |
T5652 | G4672 | G3452 | T6002 | T4692 |
| Toluen | 85 | 85 | 80 | 30 | 8 |
|---|---|---|---|---|---|
| DMF | 85 | 85 | 80 | 20 | 20 |
| Ethyl acetate | 80 | 80 | 80 | 30 | 10 |
| Acetone | 80 | 80 | 75 | 30 | 20 |
| MEK | 90 | 85 | 75 | 40 | 10 |
| N-octane | <1 | <1 | <1 | <1 | <1 |
| Methanol | <1 | <1 | <1 | <1 | <1 | Iso-propanol | <1 | <1 | <1 | <1 | <1 |
