Title:
吸水性樹脂の製造方法
Document Type and Number:
Japanese Patent JP5847260
Kind Code:
B2
Abstract:
The present invention is a method for producing a water absorbent resin which method is a method for producing surface cross-linked water absorbent resin particles, the method including the successive steps of: (a) adding a surface cross-linking agent and water to a particulate water absorbent resin in a mixer; and (b) reacting the resulting water absorbent resin mixture taken out from the mixer with the surface cross-linking agent in a reactor by heating or active energy ray irradiation, water vapor being used as part or all of the water added in the mixer. This makes it possible to provide a method for producing a water absorbent resin in which method a surface cross-linked water absorbent resin that has excellent properties can be obtained efficiently at low cost with high productivity.
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Inventors:
Kakunaga Kensuke
Kenji Kamata
Masazumi Sasabe
Seiji Kato
Kenji Kamata
Masazumi Sasabe
Seiji Kato
Application Number:
JP2014184643A
Publication Date:
January 20, 2016
Filing Date:
September 10, 2014
Export Citation:
Assignee:
Nippon Shokubai Co., Ltd.
International Classes:
C08F8/00; C08J3/24; C08J3/12
Domestic Patent References:
| JP1113406A | ||||
| JP2160814A | ||||
| JP11349625A | ||||
| JP63099211A | ||||
| JP2002121291A | ||||
| JP2005054151A | ||||
| JP2005097585A | ||||
| JP2008038128A | ||||
| JP2002201290A | ||||
| JP2004352940A | ||||
| JP2005226077A |
Attorney, Agent or Firm:
Harakenzo world patent & trademark