公开(公告)号：EP3834789A1

公开(公告)日：2021-06-16

申请号：EP19846609.6

申请日：2019-08-09

申请人： Nippon Shokubai Co., Ltd.

发明人： NODA, Yuika ,  TORII, Kazushi ,  UEDA, Hiroko ,  KITANO, Takahiro ,  HIRAUCHI, Tatsushi ,  HORIMOTO, Yuichiro ,  HIRAOKA, Ryuichi ,  IKEUCHI, Hiroyuki

IPC分类号： A61F13/53 ,  A61L15/60 ,  B01J20/26 ,  B01J20/28 ,  C08L101/14

摘要： It is an object of the present invention to provide a novel water-absorbing sheet that can meaningfully reduce the return amount even when introduction of a liquid occurs intermittently for several times (particularly, three or more times) under a situation with no load, and the amount of introduction of the liquid becomes large.
Disclosed is a water-absorbing sheet having a first base material, a second base material, and a water-absorbing layer positioned between the first base material and the second base material, wherein the first base material is a water-permeable sheet positioned on a side where a liquid to be absorbed is introduced, the water-absorbing layer has a first particulate water absorbent localized on a side of asurfaceof the firstbase material, the surface being arranged to face the second base material; and a second particulate water absorbent localized on a side of a surface of the second base material, the surface being arranged to face the first base material, an overall absorption amount of the second particulate water absorbent as represented by the following formula: CRC g / g + 0.44 × AAP 2.1 kPa g / g is 48 g/g or more, and a water absorption time determined according to a vortex method is 35 seconds or more.

公开(公告)号：EP3777803A1

公开(公告)日：2021-02-17

申请号：EP19785147.0

申请日：2019-04-12

申请人： Nippon Shokubai Co., Ltd.

发明人： TORII, Kazushi ,  KITANO, Takahiro ,  NODA, Yuika ,  HIRAOKA, Ryuichi ,  HORIMOTO, Yuichiro ,  WADA, Hidenori ,  HIRAUCHI, Tatsushi ,  WADA, Mai

IPC分类号： A61F13/53 ,  A61F13/15 ,  A61F13/534

摘要： An embodiment of the present invention provides a water-absorbing sheet which, with respect to urine having a wide range of salt concentrations (mass%) including 0, has a favorable liquid absorption speed and favorable re-wet, and which has good comfortability for users, including infants, whose urine tends to change in salt concentration due to a change in the user's physical condition. In a water-absorbing sheet (10), a first particulate water-absorbing agent (12a) and a second particulate water-absorbing agent (12b) are localized, the first particulate water-absorbing agent (12a) has a gel permeation rate (GPR) which differs by 10 or more from that of the second particulate water-absorbing agent (12b), and the gel permeation rate of the second particulate water-absorbing agent (12b) is 50 or less.