Title:
WATER-ABSORBENT RESIN PARTICLE
Document Type and Number:
WIPO Patent Application WO/2018/181565
Kind Code:
A1
Abstract:
Disclosed is a water-absorbent resin particle which includes a crosslinked polymer containing a monomer unit derived from a water-soluble ethylenically unsaturated monomer, and has an artificial menstrual blood volume increase rate of 70% as measured in an artificial menstrual blood swelling test conducted in the following order of i), ii), and iii). i) 1.0 g of water-absorbent resin particles are placed in a measuring cylinder having an inner diameter of 27 mm. ii) 10 ml of artificial menstrual blood is injected into the cylinder in a single injection to swell the water-absorbent resin particles. iii) 60 seconds after the injection, the volume (A) of the swollen water-absorbent resin particles is measured and the artificial menstrual blood volume increase rate is calculated according to equation (I) below. (I) Artificial menstrual blood volume increase rate (%) = (A-B)/B×100, where A is the volume (ml) of the swollen water-absorbent resin particles and B is the volume (ml) of the injected artificial menstrual blood.
Inventors:
YABUGUCHI HIROKI (JP)
MIYASHITA HIROMI (JP)
YOKOYAMA HIDEKI (JP)
MIYASHITA HIROMI (JP)
YOKOYAMA HIDEKI (JP)
Application Number:
PCT/JP2018/012957
Publication Date:
October 04, 2018
Filing Date:
March 28, 2018
Export Citation:
Assignee:
SUMITOMO SEIKA CHEMICALS (JP)
International Classes:
C08F20/06; A61F13/53; A61L15/24; A61L15/60; C08F2/18; C08F8/00
Domestic Patent References:
| WO2012053121A1 | 2012-04-26 | |||
| WO2008015980A1 | 2008-02-07 | |||
| WO2002085959A1 | 2002-10-31 |
Foreign References:
| JP2011038102A | 2011-02-24 | |||
| JPS5550355A | 1980-04-12 | |||
| JPH05508425A | 1993-11-25 |
Other References:
See also references of EP 3604360A4
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
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