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Title:
WATER-BASED INK COMPOSITION FOR WRITING TOOL
Document Type and Number:
WIPO Patent Application WO/2021/085294
Kind Code:
A1
Abstract:
Provided is a water-based ink composition for a writing tool, the composition having excellent chromogenic properties and producing good dark lines despite including color-imparting resin particles each holding a pigment therein.　An example of this form of water-based ink composition for a writing tool is a water-based ink composition containing at least color-imparting resin particles (A) each holding a pigment (p) therein and color-imparting resin particles (B) each having the pigment (p) exposed on the surface thereof.

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Inventors:
OGURA KOSUKE (JP)
Application Number:
PCT/JP2020/039689
Publication Date:
May 06, 2021
Filing Date:
October 22, 2020
Export Citation:
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Assignee:
MITSUBISHI PENCIL CO (JP)
International Classes:
C09D11/17
Domestic Patent References:
WO2019082888A12019-05-02
WO2019146539A12019-08-01
WO2017119480A12017-07-13
Foreign References:
JP2017222113A2017-12-21
JP2016124179A2016-07-11
JP2016124951A2016-07-11
JP2016124950A2016-07-11
JP2018109113A2018-07-12
JP2004277507A2004-10-07
JP2010150331A2010-07-08
Other References:
See also references of EP 4053227A4
Attorney, Agent or Firm:
FUJIMOTO Eisuke et al. (JP)
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