PROBLEM TO BE SOLVED: To provide water-absorptive polymer particles superior in the absorbency, liquid-permeability, etc. an absorbent article including the same as a component member and a method for improving the speed of liquid permeation under pressure of the water-absorptive polymer particles.SOLUTION: This invention provides: (1) the water-absorptive polymer particles containing (A) cross-linking polymer particles with anionic groups, and (B) a primary amine composition with hydrocarbon groups of 6-30C (2) the absorbent article having the water-absorptive polymer particles as component members and (3) the method for improving the speed of liquid permeation under pressure of the water-absorptive polymer particles by contacting (B) the primary amine composition with hydrocarbon groups of 6-30C to (A) the cross-linking polymer particles having the anionic groups as the water-absorptive polymer particles.COPYRIGHT: (C)2013,JPO&INPIT【課題】吸収性、通液性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粒子(A)と炭素数6~30の炭化水素基を有する第1級アミン化合物(B)と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、炭素数6~30の炭化水素基を有する第1級アミン化合物(B)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
