Wasserquellbares vernetztes Polymer, dessen Zusammensetzung, Verfahren zu dessen Herstellung und Anwendung

摘要

The present invention provides a water-swellable crosslinked polymer composition which comprises an anionic crosslinked polymer and a cationic crosslinked polymer, and is excellent in the desalting property and further in the absorption properties under load, and is therefore highly practicable. In a water-swellable crosslinked polymer composition which is particulate and comprises a cationic crosslinked polymer and an anionic crosslinked polymer, the improvement satisfies the following requirements (1) and/or (2): (1) At least either one of the cationic crosslinked polymer and the anionic crosslinked polymer has a bulk density of not more than 0.5 g/ml. (2) The water-swellable crosslinked polymer composition has a bulk density of not more than 0.5 g/ml.