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Title:
WATER HOLDING AGENT FOR DISPOSABLE BODY WARMER
Document Type and Number:
Japanese Patent JP2010233947
Kind Code:
A
Abstract:

To provide a water holding agent for a disposable body warmer in which the fall of the water capacity of gel is very little even if it is stored at a high temperature for a long period of time and moreover the gel, which is excellent in storage stability without varying the shape of the gel, is obtained.

In the water holding agent for the disposable body warmer which comprises an absorptive resin (X) which consists of a crosslinked polymer (A) comprising a water-soluble vinyl monomer (a1) and/or a hydrolyzable vinyl monomer (a2) which becomes water-soluble by hydrolysis, and an internal crosslinking agent (b) as indispensable constituent units, and respective values of the content of an unreacted vinyl monomer in (X) and the viscosity retention of the water absorption gel of the water holding agent satisfy specific ranges.


Inventors:
MORI KEN
MATSUMOTO YOSHIMASA
Application Number:
JP2009087652A
Publication Date:
October 21, 2010
Filing Date:
March 31, 2009
Export Citation:
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Assignee:
SANYO CHEMICAL IND LTD
International Classes:
A61F7/08; C08F22/00; C08L101/14
Domestic Patent References:
JP2001213914A2001-08-07
JP2001220415A2001-08-14
JP2000026510A2000-01-25
JPS6462317A1989-03-08
JPH08157737A1996-06-18



 
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