Title:
WATER-ABSORBENT RESIN PARTICLES
Document Type and Number:
WIPO Patent Application WO/2018/181548
Kind Code:
A1
Abstract:
Disclosed are water-absorbent resin particles comprising a crosslinked polymer containing a monomer unit derived from a water-soluble ethylenically unsaturated monomer, wherein an initial swelling force as measured according to the swelling force test conducted by a predetermined method is at least 8N, and, with respect to the total amount of the water absorbent resin particles, a proportion of particles having a particle diameter of 250-850 μm (exclusive of 250μm) is at least 70 mass% and a proportion of particles having a particle diameter of less than 250μm is at most 20 mass%.
Inventors:
YABUGUCHI HIROKI (JP)
TANIGUCHI MISAKI (JP)
YOKOYAMA HIDEKI (JP)
TANIGUCHI MISAKI (JP)
YOKOYAMA HIDEKI (JP)
Application Number:
PCT/JP2018/012924
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; B01J20/26; B01J20/28
Domestic Patent References:
WO2013128978A1 | 2013-09-06 | |||
WO2002085959A1 | 2002-10-31 |
Foreign References:
JP2012041419A | 2012-03-01 | |||
JP2003040905A | 2003-02-13 | |||
JP2012007062A | 2012-01-12 | |||
JP2016028115A | 2016-02-25 | |||
JP2018050833A | 2018-04-05 | |||
JPS5550355A | 1980-04-12 | |||
JPH05508425A | 1993-11-25 |
Other References:
See also references of EP 3604359A4
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
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