| abstract |
The present invention relates to hyperbranched polyaspartate esters containing repeating structural units corresponding to the formula I and/or IIThe present invention also relates to a process for the preparation of these hyperbranched polyaspartate esters by self condensing, via a transesterification reaction, at least a portion of the hydroxy and ester groups of the hydroxy aspartates corresponding to the above formula at a temperature of 60 to 240°C to form hyperbranched polyaspartate esters and eliminating alcohols having the formula R<sub>1</sub>-OH and/or R<sub>2</sub>-OH. |