Title:
粒子状吸水剤の製造方法および粒子状吸水剤
Document Type and Number:
Japanese Patent JP5128098
Kind Code:
B2
Abstract:
The present invention provides a method for manufacturing a particulate water-absorbing agent which has excellent liquid diffusibility and liquid permeability, and whose amount of residual monomers is reduced. The method for manufacturing the particulate water-absorbing agent of the present invention includes a step of surface-crosslinking, in the presence of an organic crosslinking agent, water-absorbing resin particles obtained through at least a step of polymerizing an aqueous solution of unsaturated monomers, and in or after the polymerizing step, a reaction system is mixed with peroxide. Thus, it is possible to obtain the particulate water-absorbing agent which has excellent liquid diffusibility and liquid permeability and whose amount of residual monomers is small, that is, it is possible to obtain the particulate water-absorbing agent which is highly functional and highly safe.
Inventors:
Hiroshi Shibata
Kazushi Torii
Kazushi Torii
Application Number:
JP2006263491A
Publication Date:
January 23, 2013
Filing Date:
September 27, 2006
Export Citation:
Assignee:
Nippon Shokubai Co., Ltd.
International Classes:
C08F8/00; C08J3/24; A61F13/15; A61F13/49; A61F13/53
Domestic Patent References:
| JP2004001355A | ||||
| JP2003529647A | ||||
| JP63099211A | ||||
| JP56072005A | ||||
| JP61296003A | ||||
| JP2004517179A |
Attorney, Agent or Firm:
Kenzo Hara International Patent Office