| abstract |
The invention relates to a method for solubilising hydrophobic active substances in an aqueous medium, characterised in that at least one hyper-branched polymer is used as an auxiliary agent, obtained by (a) producing at least one hyper-branched polyester, (a1) polycondensing at least one dicarboxylic acid or one or more derivatives thereof with one or more at least trifunctional alcohols or, (a2) polycondensing at least one tricarboxylic acid or higher polycarboxylic acid or one or more derivatives thereof with one or more diols or, (a3) polycondensing at least one dicarboxylic acid or at least one derivative thereof with a mixture of at least one diol and at least one at least tetrafunctional alcohol or, (a4) polycondensing at least one diol with a mixture of at least one dicarboxylic acid or at least one derivative thereof and at least one tri- or tetracarboxylic acid or at least one derivative thereof, (b) reacting with at least one isocyante or a chloroformate ester, which carry the and/or the at least one polyalkylene oxide unit bound by a carbonate, urea or urethane group, or a hyper-branched polyester (a). |