Title:
METHOD FOR PRODUCING WATER-ABSORBENT RESIN PARTICLES AND WATER-ABSORBENT RESIN PARTICLES
Document Type and Number:
WIPO Patent Application WO/2021/117785
Kind Code:
A1
Abstract:
A first embodiment of a method for producing water-absorbent resin particles is provided with a polymerization step for obtaining a polymer by polymerizing monomer on at least a portion of the surface of surface-crosslinked polymer particles. A second embodiment of a method for producing water-absorbent resin particles is provided with a polymerization step for obtaining a polymer by polymerizing monomer, in the presence of a crosslinking agent, on at least a portion of the surface of polymer particles that are not surface crosslinked.
Inventors:
SAWAKI HIROKI (JP)
YAMAMOTO TOMOKA (JP)
YAMAMOTO TOMOKA (JP)
Application Number:
PCT/JP2020/045931
Publication Date:
June 17, 2021
Filing Date:
December 09, 2020
Export Citation:
Assignee:
SUMITOMO SEIKA CHEMICALS (JP)
International Classes:
C08J3/12; C08F265/02
Foreign References:
| JP2016069418A | 2016-05-09 | |||
| JP2016112474A | 2016-06-23 | |||
| JP2003088553A | 2003-03-25 | |||
| JP2014098172A | 2014-05-29 |
Other References:
See also references of EP 4074757A4
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
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