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Title:
COLOR CHANGE MATERIALS AND COLOR-CHANGING COLORANT
Document Type and Number:
WIPO Patent Application WO/2023/026311
Kind Code:
A1
Abstract:
Provided are color change materials and a color-changing colorant which are able to be changed in color by water or a water-containing liquid and which are effectively usable for detecting water or a water-containing liquid.　One of the color change materials is a composition comprising three hydrophilic components, that are an electron-donating coloring organic compound, an electron-receiving compound, and a coloring regulator serving to inhibit the coloring attributable to both the electron-donating coloring organic compound and the electron-receiving compound, and a fixing material comprising an oleophilic fixer for fixation to a desired object, the color change material being able to be changed in color by water or a water-containing liquid. The color-changing colorant comprises a given fine object and, held or supported thereon, a color-changing composition comprising the three components and being able to be changed in color by water or a water-containing liquid, the color-changing colorant being able to be changed in color by water or a water-containing liquid. The other color change material comprises the color-changing colorant and the fixing material and is able to be changed in color by water or a water-containing liquid.

Inventors:
KITAGAWA YOSUKE (JP)
SHIRAMATSU YUTO (JP)
MIZUHARA TOMOHIRO (JP)
Application Number:
PCT/JP2021/030697
Publication Date:
March 02, 2023
Filing Date:
August 21, 2021
Export Citation:
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Assignee:
MATSUI SHIKISO KAGAKU KOGYOSHO (JP)
International Classes:
C09D11/037; C09B57/00; C09B67/20
Domestic Patent References:
WO2021176574A12021-09-10
Foreign References:
US20110144603A12011-06-16
JP2007040871A2007-02-15
JP2020085473A2020-06-04
JPH0892511A1996-04-09
JP2018517894A2018-07-05
US20130116644A12013-05-09
JP2012230044A2012-11-22
JP2011185745A2011-09-22
JP2011016872A2011-01-27
JP2003183546A2003-07-03
JP2005185643A2005-07-14
JP4607350B22011-01-05
JP6767021B12020-10-14
JP5996400B22016-09-21
Attorney, Agent or Firm:
TAKARA Hisashi (JP)
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