Aggregated particle, aggregated particle dispersion liquid, and production methods therefor
By combining specific metal oxide nanoparticles with ceria nanoparticles coated with stabilizing agents, the dispersibility and antiviral efficacy of cerium oxide nanoparticles are enhanced across a wide pH range, addressing the stability issue and enabling effective antiviral coatings.
WO2026127053A1 Publication Date: 2026-06-18TORAY INDUSTRIES INC
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- TORAY INDUSTRIES INC
- Filing Date
- 2025-12-10
- Publication Date
- 2026-06-18
AI Technical Summary
⚠Technical Problem
Cerium oxide nanoparticles fail to disperse stably in binder resin solutions with a pH between 7 and 9, limiting their application in forming antiviral coatings.
⚗Method used
Aggregate particles comprising nanoparticles of a metal oxide with a specific gravity of 7.0 or less, combined with ceria nanoparticles coated with boron compounds, heterocyclic amines, nitric acid, or phthalic acid, exhibit high dispersibility across a wide pH range of 2 to 9.
🎯Benefits of technology
The aggregate particles and their dispersions maintain high dispersibility and antiviral properties over a broad pH range, enabling effective antiviral coatings on surfaces.
✦ Generated by Eureka AI based on patent content.
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Abstract
The present invention provides: aggregated particles which exhibit high dispersibility not only under acidic conditions of pH 2 or higher but lower than pH 7 but also under alkaline conditions of pH 7 to pH 9 inclusive; an aggregated particle dispersion liquid; a coating material containing the particles; methods for producing the aggregated particles, the dispersion liquid, and the coating material; and a method for forming an antiviral surface. The present invention specifically provides: aggregated particles in which silica nanoparticles each having an amino group on the surface thereof or silica nanoparticles each containing an aluminum compound and ceria nanoparticles having a boron compound, a heterocyclic amine, nitric acid, acetic acid, or phthalic acid adsorbed on the surfaces thereof are aggregated; an aggregated particle dispersion liquid; a coating material containing the particles; methods for producing the aggregated particles, the dispersion liquid, and the coating material; and a method for forming an antiviral surface.
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