| abstract |
The preparation of water-absorbing polymer particles by polymerization of a monomer solution or suspension containing a) at least one ethylenically unsaturated, acid group-carrying monomer which is optionally at least partially present as a salt, b) at least one crosslinker and c) at least one initiator, the process further drying the and polymerizing in the presence of aminopolycarboxylic acids and / or their salts, in particular of ethylenediamine disuccinic acid and / or a salt thereof , is described. |