PROBLEM TO BE SOLVED: To provide absorbent resin particles capable of achieving both liquid permeability between swollen gels and absorption performance under a load.SOLUTION: There are provided: absorbent resin particles in which at least a part of the surface of the absorbent resin particles containing a crosslinked polymer (A1) comprising a water-soluble vinyl monomer(a1) and/or a vinyl monomer (a2) which becomes the water-soluble vinyl monomer(a1) by hydrolysis and a crosslinking agent as an essential constitutional unit is surface crosslinked using a compound (c) having a silanol group and/or a titanol group (α1) and a functional group (α2) which becomes the (α1) by hydrolysis and a functional group (β) which can be reacted with a carboxyl group and an inorganic acid salt (d) of zirconium, aluminum or titanium an absorber including the absorbent resin particles and an absorbent article including the absorber.SELECTED DRAWING: NoneCOPYRIGHT: (C)2016,JPO&INPIT【課題】膨潤したゲル間の通液性及び荷重下での吸収性能の両立が可能な吸収性樹脂粒子を提供する。【解決手段】水溶性ビニルモノマー(a1)及び/又は加水分解により水溶性ビニルモノマー(a1)となるビニルモノマー(a2)並びに架橋剤(b)を必須構成単位とする架橋重合体(A1)を含有する吸収性樹脂粒子の表面の少なくとも一部が、シラノール基及び/若しくはチタノール基(α1)並びに/又は加水分解により前記(α1)となる官能基(α2)並びにカルボキシル基と反応し得る官能基(β)を有する化合物(c)とジルコニウム、アルミニウム又はチタニウムの無機酸塩(d)とを用いて表面架橋されてなる吸収性樹脂粒子;前記吸収性樹脂粒子を含む吸収体;前記吸収体を含む吸収性物品である。【選択図】なし
