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Title:
METHOD FOR PRODUCING WATER-ABSORBING RESIN WITH IMPROVED INTERNAL STRUCTURE
Document Type and Number:
Japanese Patent JP2015221910
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a water-absorbing resin having high various physical properties.SOLUTION: The water-absorbing resin comprises a water-soluble unsaturated monomer containing acrylic acid and/or a salt thereof in an amount of 90 mol% as a repeating unit of the main chain, and has an internal crosslinked structure. After a treatment by a hydrolysis condition 2, the polymer has a weight average molecular weight (Mw) of 360,000 to 1,000,000 daltons and an intrinsic viscosity (IV) of 2.1 to 6.0 dL/g.

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Inventors:
TORII ICHIJI
SHIBATA HIROSHI
Application Number:
JP2015167226A
Publication Date:
December 10, 2015
Filing Date:
August 26, 2015
Export Citation:
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Assignee:
NIPPON CATALYTIC CHEM IND
International Classes:
C08F220/06; B01J20/26; B01J20/28; B01J20/30; C08F6/00
Domestic Patent References:
JP2004359943A2004-12-24
JP2000001507A2000-01-07
JP2006116535A2006-05-11
JP2003246812A2003-09-05
JPH11279288A1999-10-12
JPH1143508A1999-02-16
JP2004290960A2004-10-21
JP2005288265A2005-10-20
JP2005111474A2005-04-28
Foreign References:
WO2001098382A12001-12-27
Attorney, Agent or Firm:
Harakenzo world patent & trademark



 
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