Water absorbing agent and production method thereof

摘要

A water absorbing agent and a method for producing the water absorbing agent are disclosed. Water absorbent resin particles having an internal cross-linked structure obtained by polymerizing a water-soluble unsaturated monomer, organic acid, and water-soluble multivalent metal salt are mixed, so that it is possible to provide a water absorbing agent which suppresses permeation of metal components into the water absorbent resin particles and enables the metal components to evenly adhere to an entire surface of the water absorbent resin in a dot manner.

主权项

1. A water absorbing agent, comprising:
water absorbent resin particles, including at least one of acrylic acid and a salt of acrylic acid as a base unit, whose surfaces have been cross-linked by performing a heating treatment or using an organic cross-linking agent; organic acid or a salt thereof; and water-soluble multivalent metal salt, wherein the water absorbing agent has an absorbency against pressure (AAP) so that the absorbency is 18 (g/g) or more against a pressure of 4.83 kPa.