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Title:
WATER-DISCOLORING SHEET, AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
Japanese Patent JP2011088392
Kind Code:
A
Abstract:

To provide a water-discoloring sheet used for a painting sheet or the like for children and having a color-changing layer which is opaque in a dry state but becomes transparent in a water-absorbing state or a water-discoloring sheet in which a water-discoloring non-porous pigment and showing excellent dispersion in water without adding a dispersant or the like separately is employed as the water-discoloring pigment to be compounded in the color-changing layer.

The water-discoloring sheet including at least the color-changing layer to which the water-discoloring pigment is dispersively fixed by a binder and a support supporting the color-changing layer contains boehmite as the water-discoloring pigment changing, and furthermore, preferably contains calcium carbonate as the water-discoloring pigment.


Inventors:
SAWA TOMOHIRO
OMATSU TAKESHI
INOUE HIROSHI
Application Number:
JP2009244947A
Publication Date:
May 06, 2011
Filing Date:
October 23, 2009
Export Citation:
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Assignee:
SAKURA COLOR PROD CORP
International Classes:
B32B7/02
Domestic Patent References:
JP2008188996A2008-08-21
JP2008238670A2008-10-09
JP2009234048A2009-10-15
JPH0924666A1997-01-28
Foreign References:
WO2009087925A12009-07-16
Attorney, Agent or Firm:
Shinji Nakagawa



 
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