POLYURETHANE AND PREPARATION CONTAINING POLYURETHANE

摘要

The invention relates to a polyurethane which can be produced by reacting at least two components A and B, where a) a polyisocyanate or a mixture of two or more polyisocyanates is used as component A and b) a polyol or a mixture of at least two or more polyols is used as component B. The invention is characterized in that component B contains a polyether having a molecular weight (Mn) of at least 4,000 and c) a polydispersity PD (Mw/Mn) of less tha n 1.5, or d) an OH functionality of between approximately 1.8 and approximatel y 2.0, or e) a polydispersity PD (Mw/Mn) of less than 1.5 and an OH functionality of between approximately 1.8 and approximately 2.0, or a mixtu re of two or more such polyethers. The invention also relates to preparations containing such polyurethanes.