Title:
POLYMERIZATION METHOD FOR WATER ABSORBENT RESIN
Document Type and Number:
WIPO Patent Application WO/2023/149574
Kind Code:
A1
Abstract:
The present invention provides: a polymerization method for a water absorbent resin, the polymerization method enabling improvement of the polymerization rate without deteriorating the water absorption performance; and a water absorbent resin which is produced using this polymerization method. One embodiment of the present invention relates to a polymerization method for a water absorbent resin, the polymerization method essentially using an aqueous monomer solution containing an acrylic acid (salt) and an internal crosslinking agent, wherein polymerization is performed in the presence of (i) a polyacrylic acid (salt) polymer and (ii) a fibrous material.
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Inventors:
TORII KAZUSHI (JP)
KIMURA KAZUKI (JP)
KOBAYASHI NOBUHIRO (JP)
TAMAKI MARIKO (JP)
MATSUI DAISUKE (JP)
TAJIMA SHUN-ICHI (JP)
KIMURA KAZUKI (JP)
KOBAYASHI NOBUHIRO (JP)
TAMAKI MARIKO (JP)
MATSUI DAISUKE (JP)
TAJIMA SHUN-ICHI (JP)
Application Number:
PCT/JP2023/003776
Publication Date:
August 10, 2023
Filing Date:
February 06, 2023
Export Citation:
Assignee:
NIPPON CATALYTIC CHEM IND (JP)
International Classes:
C08F220/06; C08F2/44
Domestic Patent References:
| WO2021095806A1 | 2021-05-20 | |||
| WO2012023433A1 | 2012-02-23 |
Foreign References:
| JPH0291129A | 1990-03-30 | |||
| JPS6253479A | 1987-03-09 | |||
| JPH1045812A | 1998-02-17 | |||
| JPS63178115A | 1988-07-22 |
Attorney, Agent or Firm:
HARAKENZO WORLD PATENT & TRADEMARK (JP)
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