PROCÉDÉ POUR LA PRODUCTION DE PARTICULES DE RÉSINE ABSORBANT L'EAU, PARTICULES DE RÉSINE ABSORBANT L'EAU FABRIQUÉES PAR LE PROCÉDÉ ET ABSORBANTS ET ARTICLES ABSORBANTS FABRIQUÉS EN UTILISANT LES PARTICULES
The present invention provides a process for producing water-absorbing resin particles which possess a high water retention capacity (absorbing capacity), a high water-absorbing capacity under pressure, and a high gel strength and a small amount of water-soluble substance and is favorably usable in sanitary materials； water-absorbing resin particles obtained by the process； and absorbent materials and absorbent articles made by using the particles. More specifically, the water-absorbing resin particles are produced by a process for producing water-absorbing resin particles, comprising a step of a post-crosslinking reaction by adding a post-crosslinking agent in at least two stages to a water-absorbing resin particle precursor obtained by polymerization of a water-soluble ethylenic unsaturated monomer to carry out the post-crosslinking reaction.
