Title:
吸水性樹脂の表面架橋方法及び製造方法
Document Type and Number:
Japanese Patent JP6918407
Kind Code:
B2
Abstract:
The production method includes a drying step of drying a particulate crosslinked hydrogel polymer obtained by polymerizing a monomer, which is a material of a water-absorbent resin, using a heating device to obtain dried particles. The heating device includes: a rotary container that contains the particulate crosslinked hydrogel polymer therein and rotates; and a plurality of heating tubes that are located within the rotary container, extend in an axial direction of the rotary container, and rotate together with the rotary container. A gel temperature of the particulate crosslinked hydrogel polymer to be subjected to the drying step, the gel temperature being measured by a contact thermometer, is not lower than 50°C.
Inventors:
Hiroyasu Watanabe
Shinya Katsube
Shinichi Fujino
Motohiro Imura
Mai Sato
Tokio Shuto
Ryota Wakabayashi
Shinya Katsube
Shinichi Fujino
Motohiro Imura
Mai Sato
Tokio Shuto
Ryota Wakabayashi
Application Number:
JP2017220588A
Publication Date:
August 11, 2021
Filing Date:
November 16, 2017
Export Citation:
Assignee:
Nippon Shokubai Co., Ltd.
International Classes:
C08J3/24
Domestic Patent References:
| JP9183856A | ||||
| JP2010202743A |
Foreign References:
| WO2006123561A1 | ||||
| WO2018092864A1 |
Attorney, Agent or Firm:
Patent business corporation Yuko patent office