Process for Preparing Color-Stable Water-Absorbing Polymer Particles with a Low Degree of Neutralization

摘要

The present invention relates to a process for producing water-absorbing polymeric particles by polymerizing a monomer solution comprising at least one ethylenically unsaturated acid-functional monomer less than 55 mol % neutralized and drying the resulting polymeric gel by means of a heated gas stream in at least two temperature zones.