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AssigneeIshihara Sangyo Kaisha, Ltd.
InventorsMasanori TOMONARI, Satoshi NAGAMORI, Yuto KAMEDA
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Provided are a titanium dioxide aqueous dispersion having high dispersibility and little aggregation or coarse particles, and a method for producing the same. The titanium dioxide aqueous dispersion contains titanium dioxide particles having a hydrophobic compound such as a higher fatty acid or a salt thereof on the surface, an aqueous dispersion medium, a nonionic surfactant having an HLB value of 10 or higher, and a basic compound such as an alkanolamine, and the pH is in the 8.5-13 range. The method for producing a titanium dioxide aqueous dispersion has a step for mixing the titanium dioxide particles having a hydrophobic compound on the surface, the aqueous dispersion medium, the nonionic surfactant having an HLB value of 10 or higher, and the basic compound to bring the pH of the aqueous dispersion into the 8.5-13 range.
A titanium dioxide aqueous dispersion comprising a titanium dioxide particle having a hydrophobic compound on the surface, an aqueous dispersion medium, a nonionic surfactant having an HLB value of 10 or more, and a basic compound, wherein a pH of the titanium dioxide aqueous dispersion is in a range of 8.5 to 13.
A method for producing a titanium dioxide aqueous dispersion, comprising mixing a titanium dioxide particle having a hydrophobic compound on the surface, an aqueous dispersion medium, a nonionic surfactant having an HLB value of 10 or more, and a basic compound to bring a pH of the aqueous dispersion into a range of 8.5 to 13.
Dependencies are inferred from the claim text.