Title:
PRODUCTION METHOD FOR WATER ABSORBENT RESIN
Document Type and Number:
WIPO Patent Application WO/2012/014747
Kind Code:
A1
Abstract:
Disclosed is a method for producing a water absorbent resin, wherein said method produces the water absorbent resin by means of a reversed-phase suspension polymerisation method and wherein odours originating from raw material components, particularly petroleum hydrocarbon dispersion mediums, have been reduced. Also disclosed is the water absorbent resin obtained by means of the method. Specifically, the disclosed method carries out reversed-phase suspension polymerisation on water soluble ethyleny unsaturated monomers in a petroleum hydrocarbon dispersion medium and using a surfactant. By dispersing a water soluble ethyleny unsaturated monomer solution into the dispersion medium at a prescribed insertion speed the method produces a water absorbent resin wherein odours have been reduced. Also disclosed is the water absorbent resin obtained by means of the disclosed method.
Inventors:
YOKOYAMA HIDEKI (JP)
KIKUNO SACHI (JP)
HEGURI ATSUSHI (JP)
MAEDA NOBUHIRO (JP)
KIKUNO SACHI (JP)
HEGURI ATSUSHI (JP)
MAEDA NOBUHIRO (JP)
Application Number:
PCT/JP2011/066453
Publication Date:
February 02, 2012
Filing Date:
July 20, 2011
Export Citation:
Assignee:
SUMITOMO SEIKA CHEMICALS (JP)
YOKOYAMA HIDEKI (JP)
KIKUNO SACHI (JP)
HEGURI ATSUSHI (JP)
MAEDA NOBUHIRO (JP)
YOKOYAMA HIDEKI (JP)
KIKUNO SACHI (JP)
HEGURI ATSUSHI (JP)
MAEDA NOBUHIRO (JP)
International Classes:
C08F2/18; B01J20/26; C08F20/06
Domestic Patent References:
| WO2009025235A1 | 2009-02-26 | |||
| WO2007126002A1 | 2007-11-08 |
Foreign References:
| JPH03195709A | 1991-08-27 | |||
| JPH03195713A | 1991-08-27 | |||
| JPS6187702A | 1986-05-06 | |||
| JPS62172006A | 1987-07-29 |
Other References:
See also references of EP 2599794A4
Attorney, Agent or Firm:
TANAKA, Mitsuo et al. (JP)
Mitsuo Tanaka (JP)
Mitsuo Tanaka (JP)
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Claims: