Title:
高吸水性ポリマーの再生方法、高吸水性リサイクルポリマーの製造方法、及びアルカリ金属イオン供給源の使用
Document Type and Number:
Japanese Patent JP7446369
Kind Code:
B2
Abstract:
The purpose of the present disclosure is to provide a method for regenerating a highly water-absorbing polymer that has been deactivated by an acid, the method enabling formation of a highly water-absorbing recycled polymer having predetermined water absorption properties. The regeneration method according to the present disclosure is configured as follows. This method regenerates a highly water-absorbing polymer that has been deactivated by an acid into a highly water-absorbing recycled polymer having predetermined water absorption properties. The method includes: a preparation step (S1) for preparing a highly water-absorbing polymer which has an acid group and which has been deactivated by an acid; a highly water-absorbing recycled polymer-forming step (S3) for adding an alkali metal ion source, which can supply an alkali metal ion, to a regeneration-use aqueous solution that contains the highly water-absorbing polymer that has been deactivated by an acid, and forming the highly water-absorbing recycled polymer in a wet state from the highly water-absorbing polymer that has been deactivated by the acid; and a drying step for drying the highly water-absorbing recycled polymer in a wet state and forming the highly water-absorbing recycled polymer having the predetermined water absorption properties.
More Like This:
Inventors:
Tatsuo Ito
Haruna Onodera
Naoyuki Funamizu
Takayoshi Konishi
Koichi Yamaki
Haruna Onodera
Naoyuki Funamizu
Takayoshi Konishi
Koichi Yamaki
Application Number:
JP2022120728A
Publication Date:
March 08, 2024
Filing Date:
July 28, 2022
Export Citation:
Assignee:
Unicharm Corporation
International Classes:
B01J20/34; B01J20/26; B29B17/00; C08J11/04
Domestic Patent References:
JP2003326161A | ||||
JP2003225645A | ||||
JP2013198862A | ||||
JP2016123973A |
Attorney, Agent or Firm:
Atsushi Aoki
Shinji Mihashi
Hiroyuki Onoda
Takenori Okuno
Kenji Fujimoto
Shinji Mihashi
Hiroyuki Onoda
Takenori Okuno
Kenji Fujimoto
Previous Patent: Device with at least one electrode unit for data detection of electrical stimulation or diagnostic e...
Next Patent: wheels for cars
Next Patent: wheels for cars