Title:
WATER-BASED INK COMPOSITION FOR REVERSIBLE THERMOCHROMIC WRITING INSTRUMENT, AND WRITING INSTRUMENT USING THE SAME
Document Type and Number:
Japanese Patent JP2020002286
Kind Code:
A
Abstract:
To provide a water-based ink composition for reversible thermochromic writing instrument capable of suppressing aggregation of a reversible thermochromic microcapsule pigment, and maintaining good ink flowability.SOLUTION: There are provided a water-based ink composition for reversible thermochromic writing instrument comprising at least a reversible thermochromic microcapsule pigment including a reversible thermochromic composition composed of (i) an electron-donative coloring organic compound, (ii) an electron-accepting compound and (iii) a reaction medium which determines a temperature at which color reactions of both compounds occur, polyoxyalkylene arylether phosphoric acid, and water, in which the polyoxyalkylene arylether phosphoric acid has an aryl group containing a plurality of aromatic rings in a structure, and a HLB value is 9 to 18, and a writing instrument using the same.SELECTED DRAWING: Figure 1
Inventors:
ONO ITSUKA
OGURA MAMIKO
OGURA MAMIKO
Application Number:
JP2018124163A
Publication Date:
January 09, 2020
Filing Date:
June 29, 2018
Export Citation:
Assignee:
PILOT CORP
International Classes:
C09D11/17; B43K7/01; B43K8/02; C09D11/50
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