Title:
WATER-ABSORBING RESIN AND WATER-ABSORBING AGENT
Document Type and Number:
WIPO Patent Application WO/2016/148153
Kind Code:
A1
Abstract:
The present invention addresses the problem of discovering a novel method for improving the productivity in the production of a water-absorbing resin and water-absorbing agent having good water-absorbing properties. The present invention pertains to a water-absorbing resin obtained by polymerizing a water-soluble ethylenic unsaturated monomer in the presence of a water-soluble polymerization initiator, wherein the water-absorbing resin satisfies all of (A)-(C). (A) The pure water absorption capacity is 500 g/g or higher; (B) the pure water-swollen gel fluidity is 25 g/5 min or higher; (C) the amount of polymer dissolved in the waste water is less than 400 ppm.
Inventors:
MURAKAMI MASAHIRO (JP)
HINAYAMA TETSUHIRO (JP)
HINAYAMA TETSUHIRO (JP)
Application Number:
PCT/JP2016/058186
Publication Date:
September 22, 2016
Filing Date:
March 15, 2016
Export Citation:
Assignee:
SUMITOMO SEIKA CHEMICALS (JP)
International Classes:
C08F2/18; C08J3/24
Foreign References:
| JP2000026510A | 2000-01-25 | |||
| JPH11335404A | 1999-12-07 | |||
| JP2012236898A | 2012-12-06 | |||
| JP2009280668A | 2009-12-03 | |||
| JP2016028113A | 2016-02-25 |
Attorney, Agent or Firm:
SAMEJIMA, Mutsumi et al. (JP)
Mutsumi Sameshima (JP)
Mutsumi Sameshima (JP)
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