METHOD FOR PRODUCING ZIRCONIA-COATED TITANIUM OXIDE MICROPARTICLES, ZIRCONIA-COATED TITANIUM OXIDE MICROPARTICLES AND USE THEREOF

[Object]To provide, for example, titanium oxide fine particles that are less photocatalytically active while maintaining a high refractive index.[Solution]A method for producing a zirconia-coated titanium oxide fine particle dispersion includes (1) a step of preparing a dispersion (1) of titanium ox...

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Bibliographische Detailangaben
Hauptverfasser:	YAMAGUCHI Jun, MURAGUCHI Ryo, ENOMOTO Naoyuki
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F CORRECTING FLUIDS DYES FILLING PASTES INKS INORGANIC CHEMISTRY METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING POLISHES PREPARATION OF CARBON BLACK TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	[Object]To provide, for example, titanium oxide fine particles that are less photocatalytically active while maintaining a high refractive index.[Solution]A method for producing a zirconia-coated titanium oxide fine particle dispersion includes (1) a step of preparing a dispersion (1) of titanium oxide fine particles, (2) a step of adding, to the dispersion (1), 1 to 50 parts by mass of an aqueous peroxozirconic acid solution in terms of the mass of ZrO2 per 100 parts by mass of the titanium oxide fine particles, and then aging reaction fine particles (2a) obtained as a result of a reaction between the titanium oxide fine particles and the peroxozirconic acid to thereby obtain a dispersion (2) of a zirconia-coated titanium oxide fine particle precursor (2b), and (3) a step of adjusting the dispersion (2) to have a solid concentration of 0.01 to 10 mass% and then hydrothermally treating the resulting dispersion (2).