Title:
A water absorption agent and a manufacturing method for the same
Document Type and Number:
Japanese Patent JP6092236
Kind Code:
B2
Abstract:
The present invention provides (i) a water absorbing agent which is excellent in a water absorbing physical properties, in particular water absorbing speed and has a great bulk specific gravity and (ii) a method for producing the water absorbing agent. The method for producing the water absorbing agent includes a surfactant adding step of adding a surfactant whose HLB is 10 or less. The surfactant adding step is the step of adding a dispersion liquid, which contains the surfactant equivalent to 30 parts by weight to 150 parts by weight, relative to 1000000 parts by weight of a water absorbent resin solid content, and the surfactant adding step is carried out after a drying step. Further, in a case where a water-soluble polyvalent metal salt adding step is carried out after the drying step, the surfactant adding step is carried out after the water-soluble polyvalent metal salt adding step.
Inventors:
Nakatsuru Reiko
Shinya Tanaka
Yoshiro Mitsugami
Shinya Tanaka
Yoshiro Mitsugami
Application Number:
JP2014539813A
Publication Date:
March 08, 2017
Filing Date:
October 03, 2013
Export Citation:
Assignee:
Nippon Shokubai Co., Ltd.
International Classes:
B01J20/30; B01J20/26; B01J20/28; C08J3/20
Domestic Patent References:
| JP5156034A | ||||
| JP2007529295A | ||||
| JP2000302876A | ||||
| JP2010510045A |
Foreign References:
| WO2005075070A1 | ||||
| WO2008120742A1 | ||||
| WO2011040530A1 |
Attorney, Agent or Firm:
Harakenzo world patent & trademark