Title:
AQUEOUS INK COMPOSITION FOR WRITING UTENSIL AND WRITING UTENSIL ACCOMMODATING SAME
Document Type and Number:
WIPO Patent Application WO/2023/095614
Kind Code:
A1
Abstract:
[Problem] To provide an aqueous ink composition for writing utensils which is able to form written characters having excellent dryability and form clear written characters inhibited from striking through to the back and which, even when containing a pigment as a colorant, can be inhibited from suffering aggregation or precipitation of the pigment, and a writing utensil accommodating the ink composition. [Solution] An aqueous ink composition for writing utensils which comprises a colorant, water, and a specific polyoxyethylene aryl ether and has a contact angle of 40-70° with writing paper A in accordance with old JIS P3201; and a writing utensil including the aqueous ink composition accommodated in the interior thereof.
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Inventors:
OHNO ITSUKA (JP)
FUKUSHIMA AZUSA (JP)
KITAOKA NOBUYUKI (JP)
FUKUSHIMA AZUSA (JP)
KITAOKA NOBUYUKI (JP)
Application Number:
PCT/JP2022/041692
Publication Date:
June 01, 2023
Filing Date:
November 09, 2022
Export Citation:
Assignee:
KK PILOT CORPORATION ALSO TRADING AS PILOT CORPORATION (JP)
International Classes:
C09D11/16; B43K5/00; B43K7/00; B43K7/01; B43K8/02
Domestic Patent References:
| WO2011158384A1 | 2011-12-22 |
Foreign References:
| JP2019189802A | 2019-10-31 | |||
| JP2017088771A | 2017-05-25 | |||
| JPH10195363A | 1998-07-28 | |||
| JPH0912958A | 1997-01-14 | |||
| JP2007297519A | 2007-11-15 | |||
| JP2001064558A | 2001-03-13 |
Attorney, Agent or Firm:
MIYAJIMA Manabu et al. (JP)
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