Title:
吸収性樹脂粒子、吸収体及び吸収性物品、並びに吸収性樹脂粒子の製造方法
Document Type and Number:
Japanese Patent JP7194695
Kind Code:
B2
Abstract:
Provided are absorbent resin particles that, when used in an absorbent article, provide little decrease in absorption rate or diffusibility even with repeated urination over an extended period of time, excellent surface dryness, and are unlikely to leak or cause a rash. The present invention provides absorbent resin particles that include: a crosslinking polymer (A1) that has, as essential structural units, a water-soluble vinyl monomer (a1) and/or a hydrolyzable vinyl monomer (a2) and an internal crosslinking agent (b1); and a hydrophobic substance (C). A liquid permeation improver (D) is contained on the surface of the absorbent resin particles. The physiological saline retention amount is 25-60 g/g. The weight-average particle diameter is 250-600 μm. The ratio of particles having a particle diameter of less than 150 μm relative to the total weight of all absorbent resin particles is 3 wt% or less. The physiological saline permeation rate (mL/min) under 2.14 kPa load is 5 or greater. The absorption rate (sec) determined using the vortex method is 45 or less.
Inventors:
Takaaki Bando
Toru Miyajima
Hidetoshi Noda
Toru Miyajima
Hidetoshi Noda
Application Number:
JP2019558184A
Publication Date:
December 22, 2022
Filing Date:
November 30, 2018
Export Citation:
Assignee:
sdp global corporation
International Classes:
C08J3/12; A61F13/15; A61F13/53; C08F220/06; C08F220/10; C08F236/22; C08K3/30; C08K5/20; C08L27/12; C08L33/02; C08L33/14; C08L83/04
Domestic Patent References:
| JP2013132434A | ||||
| JP2014005472A | ||||
| JP2013231199A |
Foreign References:
| WO2016204302A1 | ||||
| WO2016114245A1 | ||||
| WO2012133734A1 | ||||
| WO2017057709A1 |
Attorney, Agent or Firm:
Furuya Shinya
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