Title:
METHOD FOR PRODUCING WATER-ABSORBING RESIN COMPOSITION, WATER-ABSORBING RESIN COMPOSITION, ABSORBING BODY USING SAME, AND ABSORBENT ARTICLE
Document Type and Number:
WIPO Patent Application WO/2023/188712
Kind Code:
A1
Abstract:
The present invention is a method for producing a water-absorbing resin composition containing: a cross-linked polymer (A) having as structural units one or more monomers (A1) selected from the group consisting of water soluble unsaturated monocarboxylic acids (a1) and salts thereof; one or more monomers (A2) selected from the group consisting of water-soluble unsaturated dicarboxylic acids (a3) and salts thereof; and a cross-linking agent (b). The method comprises: a polymerization step for polymerizing a monomer composition including the monomer (A1), the monomer (A2), and the cross-linking agent (b) in the presence of a chelating agent (c) to obtain a hydrous gel including the cross-linked polymer (A); and a drying step for drying the hydrous gel. The present invention can provide a method for producing a water-absorbing resin composition that, while using a raw material derived from plants and having low polymerization reactivity, has about the same water absorption capability under a load as that of a water-absorbing resin composition composed only of a petroleum-derived monomer, that is, acrylic acid.
Inventors:
MORITA EIJI (JP)
SUZUKI SHUNSUKE (JP)
SUZUKI SHUNSUKE (JP)
Application Number:
PCT/JP2023/001324
Publication Date:
October 05, 2023
Filing Date:
January 18, 2023
Export Citation:
Assignee:
SDP GLOBAL CO LTD (JP)
International Classes:
C08F220/04; C08F2/44; C08F220/10; C08F220/56; C08F222/02; C08J3/075
Domestic Patent References:
| WO2018062539A1 | 2018-04-05 | |||
| WO2010090322A1 | 2010-08-12 |
Foreign References:
| JP2019518815A | 2019-07-04 | |||
| JP2006068731A | 2006-03-16 | |||
| JP2015009042A | 2015-01-19 | |||
| JP2012031292A | 2012-02-16 | |||
| JP2006199805A | 2006-08-03 |
Attorney, Agent or Firm:
UNIUS PATENT ATTORNEYS OFFICE (JP)
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