| abstract |
The present invention relates to a process for the preparation of a water-absorbing, acid group-containing monomer-based polymer structure, comprising the process steps: i) providing a monomer solution comprising the optionally partially neutralized, acid group-containing monomer; ii) mixing the monomer solution with fine particles which consist of at least 90 wt .-%, based on the total weight of the fine particles, of particles having a particle size of less than 850 microns. to obtain a monomer solution mixed with fine particles; wherein the mixing in step ii) takes place in a mixer (1) in which a first stream (2) of the fine particles and at least one further stream (3) from the monomer solution from different directions simultaneously on a rotating mixing tool (4) are passed , |