| abstract |
The present invention relates to polyurethane cast elastomers, obtainable from the reaction of at least one NCO-terminated prepolymer (A) obtainable from the reaction of (A1) at least one polyisocyanate comprising at least two isocyanate groups, and (A2) at least one polyol having a number average molecular weight of 100 to 5000 g/mol and a functionality of 2 to 4, in the presence of (A3) optionally at least one catalyst and/or (A4) optionally at least one additive, with a mixture comprising at least one polyether carbonate polyol (B) obtainable from the reaction of (B1) carbon dioxide, (B2) at least one alkylene oxide and (B3) at least one H-functional starter compound and optionally other polyether, polyester polyols, optionally at least one chain extender as component (C), and optionally at least one additive and/or catalyst as component (D), to a process for the preparation of this polyurethane cast elastomer, and to the use of this polyurethane cast elastomer. |