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Title:
WATER-BASED INK COMPOSITION FOR WRITING INSTRUMENT, AND WRITING INSTRUMENT, BRUSH PEN AND BRUSH PEN INK CARTRIDGE INCORPORATING THE SAME
Document Type and Number:
Japanese Patent JP2022132011
Kind Code:
A
Abstract:
To provide a water-based ink composition for writing instrument that gives rich color development, and, while enabling formation of vivid handwriting with suppressed bleeding, improves the drying property of the handwriting, and to provide a writing instrument, a brush pen and a brush pen ink cartridge including the same.SOLUTION: Provided are a water-based ink composition for writing instrument that contains a self-dispersion-type pigment, a polyoxyalkylene branched alkyl ether with an HLB value of 12 to 16, and water, and has a viscosity of 1 to 20 mPa-s when measured at 20°C and 30 rpm using a BL type viscometer, and also a writing instrument, a brush pen and a brush pen ink cartridge including the water-based ink composition.SELECTED DRAWING: Figure 1

Inventors:
FUKUSHIMA AZUSA
YAMADA AKIRA
Application Number:
JP2021091172A
Publication Date:
September 07, 2022
Filing Date:
May 31, 2021
Export Citation:
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Assignee:
PILOT CORP
International Classes:
C09D11/16; B43K7/01; B43K8/02; B43K8/03; B43K8/04; B43K8/06