| abstract |
The present invention relates to two-component polyurethane compositions which on the one hand have a long open time and even after prolonged exposure to a climate with high humidity (eg 70% relative humidity) even after 40 minutes, in particular even after 60 minutes, bonded and to polymers with can be cured with high mechanical strength, and so a structural bond is made. The composition comprises castor oil, at least one alkoxylated aromatic diol, at least one polyol having from 5 to 8 hydroxyl groups and at least one polyisocyanate.n n n The two-component polyurethane compositions are particularly suitable for use as structural adhesives, in particular for the bonding of wing half-shells of rotor blades for wind turbines. |