PROBLEM TO BE SOLVED: To provide water-absorbing polymer particles excellent in water-absorption ability and under pressure liquid permeability, to provide an absorption article having the water-absorbing polymer particles as a constituent member and to provide an improving method of under pressure liquid permeable speed of the water-absorbing polymer particles.SOLUTION: (1) The water-absorbing polymer particles include a crosslinked polymer (A) having an anionic group, an amino-modified silicone (B) having ≤2,000 g/mol functional group equivalent and water insoluble inorganic fine particles (C). (2) The water absorption article has the water-absorbing particles as the constituent member. (3) In the improving method of the under pressure liquid permeable speed of the water-absorbing polymer particles, the amino-modified silicone (B) having ≤2,000 g/mol functional group equivalent and the water insoluble inorganic fine particles are brought into contact with the particles of crosslinked polymer (A) having the anionic group to be water-absorbing polymer particles.COPYRIGHT: (C)2013,JPO&INPIT【課題】吸水性能、加圧下通液性能等に優れた吸水性ポリマー粒子、それを構成部材として有する吸収性物品、及び吸水性ポリマー粒子の加圧下通液速度の改善方法を提供する。【解決手段】(1)アニオン性基を有する架橋ポリマー(A)、官能基当量が2000g/mol以下のアミノ変性シリコーン(B)、及び水不溶性無機微粒子(C)からなる吸水性ポリマー粒子、(2)前記吸水性ポリマー粒子を構成部材として有する吸収性物品、及び(3)吸水性ポリマー粒子であるアニオン性基を有する架橋ポリマー(A)粒子に、官能基当量が2000g/mol以下のアミノ変性シリコーン(B)及び水不溶性無機微粒子(C)を接触させる、吸水性ポリマー粒子の加圧下通液速度の改善方法である。【選択図】なし
