Title:
WATER-ABSORBING RESIN, ABSORBER, AND ABSORBENT ARTICLE
Document Type and Number:
WIPO Patent Application WO/2022/085643
Kind Code:
A1
Abstract:
Provided is a water-absorbing resin with which the enzyme activity of a urease that generates ammonia from urea can be inhibited and a pH increase on the surface of an absorbent article, which causes skin rashes or the like, can be suppressed. This water-absorbing resin has an oxidation-reduction potential of a swollen gel of at least 260 mV, as measured by the following oxidation-reduction potential measuring method. (Oxidation-reduction potential measuring method) 60 mL of ion exchange water having an oxidation-reduction potential of 390±10 mV is added to a beaker. The oxidation-reduction potential of the ion exchange water is measured after an electrode of a pH meter is inserted into the ion exchange water and left alone for 15 minutes. Next, 2.0 g of a water-absorbing resin is added to the ion exchange water that is being stirred at 400 rpm, and the resultant is stirred to obtain a swollen gel. An electrode of a pH meter is inserted into the swollen gel and left alone for 15 minutes, and then the oxidation-reduction potential thereof is measured.
Inventors:
MORISHIMA SHOTA (JP)
Application Number:
PCT/JP2021/038488
Publication Date:
April 28, 2022
Filing Date:
October 18, 2021
Export Citation:
Assignee:
SUMITOMO SEIKA CHEMICALS (JP)
International Classes:
C08F20/04; B01J20/26
Foreign References:
| JP2019026527A | 2019-02-21 | |||
| JP2009007583A | 2009-01-15 | |||
| JPH03227301A | 1991-10-08 | |||
| JPH01223161A | 1989-09-06 | |||
| JP2003176223A | 2003-06-24 | |||
| JPH03227301A | 1991-10-08 |
Attorney, Agent or Firm:
TANAKA, Junya et al. (JP)
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