TETRAGONAL ZIRCONIUM OXIDE NANOPARTICLES, METHOD FOR PRODUCING THE SAME, AND DISPERSION BODY AND R

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PROBLEM TO BE SOLVED : To provide tetragonal zirconium oxide nanoparticles which are excellent in dispersibility in an organic solvent containing an aryl group, a monomer, a polymerizable oligomer, a resin and the like, prevents phase separation in polymerization in the monomer and the polymerizable oligomer, and is less in reduction in a refractive index, a method for producing the same, and a dispersion body and a resin composite body of the same. SOLUTION : Tetragonal zirconium oxide nanoparticles contain at least one stabilization element selected from aluminum, magnesium, titanium and a rare-earth element, and is surface-treated with a surface treatment agent containing a hydroxyl group-containing aliphatic carboxylic acid and an aryl group-containing carboxylic acid. SELECTED DRAWING : Figure 1 COPYRIGHT : (C)2019, JPO&INPIT