Title:
WATER-ABSORBENT RESIN AND ABSORBENT ARTICLE
Document Type and Number:
WIPO Patent Application WO/2019/074099
Kind Code:
A1
Abstract:
Provided are: a water-absorbent resin that can be easily separated from recyclable resources when recovering recyclable resources; and an absorbent article comprising an absorbent body including the water-absorbent resin. The water-absorbent resin according to the present invention has a structure in which a polymer of a water-soluble ethylenically unsaturated monomer is crosslinked with a post-crosslinking agent. (1) Water retention capacity with respect to physiological saline is 35 g/g or more, (2) water absorption capacity with respect to physiological saline under a 4.14 kPa load is 10 mL/g or more, (3) initial gel viscosity is 3000 mPa·s or more, (4) a gel decomposition index represented by gel decomposition index = B/A (wherein A represents initial gel viscosity (mPa·s) and B represents gel viscosity (mPa·s) after 1 day) is 0.60 or less.
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Inventors:
HAMA MAOKI (JP)
KUMAZAWA KENTA (JP)
KUMAZAWA KENTA (JP)
Application Number:
PCT/JP2018/038102
Publication Date:
April 18, 2019
Filing Date:
October 12, 2018
Export Citation:
Assignee:
SUMITOMO SEIKA CHEMICALS (JP)
International Classes:
A61F13/53; C08F8/00; C08F20/04
Domestic Patent References:
| WO2016006135A1 | 2016-01-14 | |||
| WO2016006133A1 | 2016-01-14 | |||
| WO2016006129A1 | 2016-01-14 | |||
| WO2003106513A1 | 2003-12-24 | |||
| WO2011065368A1 | 2011-06-03 | |||
| WO2006123561A1 | 2006-11-23 |
Foreign References:
| JPH05247307A | 1993-09-24 | |||
| JP2003088552A | 2003-03-25 | |||
| JP2000084533A | 2000-03-28 | |||
| JP2006289154A | 2006-10-26 | |||
| EP3153528A1 | 2017-04-12 | |||
| EP2993189A1 | 2016-03-09 | |||
| EP2993191A1 | 2016-03-09 | |||
| JP2005334616A | 2005-12-08 |
Other References:
KATO, SHINJIRO: "High water absorbing resin", SANYO KASEI NEWS-2010 NEW YEAR
Attorney, Agent or Firm:
SAEGUSA & PARTNERS (JP)
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