Aqueous ink composition for writing utensil, and writing utensil containing the same
JP2025118027A5Pending Publication Date: 2026-07-21PILOT PEN CO LTD
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Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- PILOT PEN CO LTD
- Filing Date
- 2024-01-31
- Publication Date
- 2026-07-21
AI Technical Summary
Technical Problem
Conventional aqueous ink compositions using polyoxyalkylene alkyl ether to solubilize 2-n-octyl-4-isothiazolin-3-one suffer from handwriting bleed-through on paper surfaces, compromising antiseptic and antifungal properties.
Method used
Aqueous ink compositions containing 2-n-octyl-isothiazolin-3-one solubilized by polyether phosphate esters and/or their salts with an HLB of 5 to 20, preventing handwriting bleed-through and enhancing antiseptic and antifungal properties.
Benefits of technology
The solution effectively prevents handwriting bleed-through while maintaining excellent antiseptic and antifungal properties, contributing to waste reduction and recycling efforts aligned with Sustainable Development Goals.
✦ Generated by Eureka AI based on patent content.
Abstract
To provide an aqueous ink composition for a writing utensil, improved in the aseptic / fungus resistance performance by solubilizing 2-n-octyl-4-isothiazolin-3-one in the aqueous ink composition by adding polyether phosphoric ester, and not generating bleed through of handwriting formed on a writing surface such as a paper surface in writing, and to provide a writing utensil containing the same.SOLUTION: An aqueous ink composition for a writing utensil contains at least water, a coloring agent, 2-n-octyl-isothiazolin-3-one and polyether phosphoric ester and / or its salt. The HLB of the polyether phosphoric ester and / or its salt may be 5 or more and 20 or less.SELECTED DRAWING: None
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