| 摘要 |
PROBLEM TO BE SOLVED: To provide a water-absorbing resin having high various physical properties.SOLUTION: The water-absorbing resin comprises a water-soluble unsaturated monomer containing acrylic acid and/or a salt thereof in an amount of 90 mol% as a repeating unit of the main chain, and has an internal crosslinked structure. After a treatment by a hydrolysis condition 2, the polymer has a weight average molecular weight (Mw) of 360,000 to 1,000,000 daltons and an intrinsic viscosity (IV) of 2.1 to 6.0 dL/g. |
