Title:
A manufacturing method of a water absorption agent, an absorptive article, and a water absorption agent
Document Type and Number:
Japanese Patent JP6025953
Kind Code:
B2
Abstract:
According to the present invention, a balance between lowering of the fine powder generated during the production, and lowering of the amount of residual monomer in the resulting water absorbent resin can be achieved. More particularly, according to the present invention, a water absorbent resin which includes a small amount of residual monomer and has a favorable physical property can be obtained while effectively reutilizing the fine powder generated in the production step of the water absorbent resin, without increasing using amount of an additive (at least one selected from the group consisting of thermal initiators, oxidizing agents and reducing agents) for reducing the residual monomer. In other words, the method for production of a water absorbent resin of the present invention is a method in which the residual monomer can be efficiently reduced, and in addition, an effect in terms of the production cost, i.e., recycling of the fine powder, can be also achieved similarly to conventional recycling methods of fine powder through agglomeration.
Inventors:
Kazuki Kimura
Shinichi Fujino
Katsuyuki Wada
Shinichi Fujino
Katsuyuki Wada
Application Number:
JP2015223284A
Publication Date:
November 16, 2016
Filing Date:
November 13, 2015
Export Citation:
Assignee:
Nippon Shokubai Co., Ltd.
International Classes:
B01J20/26; A61F13/49; A61F13/53; B01J20/28; C08F8/00; C08F20/06; C08J3/12
Domestic Patent References:
| JP2004300425A | ||||
| JP6240151A | ||||
| JP4106108A | ||||
| JP2004359943A | ||||
| JP2004197087A |
Foreign References:
| WO1991003497A1 |
Attorney, Agent or Firm:
Kengo Oka
Sumitomo Norio
Sumitomo Norio