| abstract |
Method for the production of polyurethanes that includes I) at least two hydrophilic segments S, II) at least one hydrophilic segment P different from S, III) at least two terminal hydrophobic segments T, IV) at least two hydrophobic segments D different from T, where a) each segment T immediately follows a segment S, b) each segment S on at least one side follows at least one segment D, c) each segment P follows at least two segments D, characterized in that the production occurs in the presence of at least one carboxylic acid salt of at least one metal chosen from the group consisting of alkali metals, alkaline earth metals and mixtures thereof. |