| abstract |
The invention relates to polyurethane-polyurea dispersions comprising structural units of the formula (I) (see formula (I)) in which R1 is an aliphatic or cycloaliphatic radical having from 2 to 18 carbon atoms, and R2 is an aliphatic radical having 3 to 5 carbon atoms. The preparation of the polyurethane-polyurea dispersion and use as a sizing composition is also described. |