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Zirconium oxide, zirconium oxide dispersion liquid, zirconium oxide-containing composition, coating film and display device

A technology for display devices and zirconia, applied in the fields of coating films and display devices, zirconia, zirconia dispersions, and zirconia-containing compositions, can solve problems such as decreased transparency or smoothness, and achieve excellent long-term storage stability , the effect of excellent visibility and excellent transparency

Inactive Publication Date: 2017-04-19
SUMITOMO OSAKA CEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the above-mentioned applications, if zirconia aggregates in the matrix, functions such as transparency and smoothness will decrease in the functional film.

Method used

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  • Zirconium oxide, zirconium oxide dispersion liquid, zirconium oxide-containing composition, coating film and display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0136] "Zirconium Oxide"

[0137] To a 0.6M zirconium oxychloride aqueous solution (700 ml) heated to 85° C., a 15 mass % ammonium sulfate aqueous solution was added over 5 minutes.

[0138] The addition amount of the ammonium sulfate aqueous solution to the zirconium oxychloride aqueous solution was made into the quantity which became ammonium sulfate: zirconium oxychloride=0.45:1 by molar ratio.

[0139] After the ammonium sulfate aqueous solution was added, the zirconium oxychloride aqueous solution became cloudy, so it was confirmed that water-insoluble basic zirconium sulfate was produced.

[0140] After stirring the zirconium oxychloride aqueous solution to which the ammonium sulfate aqueous solution was added for 30 minutes, 1N sodium hydroxide aqueous solution was added to this mixed solution, and the pH of the mixed solution was adjusted to 9-10.

[0141] Thereafter, the mixed solution was subjected to solid-liquid separation, and the solid content was recovered. Ne...

Embodiment 2

[0153] Repeat 5 sets of solid-liquid separation treatment and sulfate ion removal treatment, and repeat 2 times the treatment of washing the solid content recovered from the mixed solution with pure water to obtain zirconium hydroxide, except that it is carried out in the same manner as in Example 1 Thus, the zirconia of Example 2 was obtained.

[0154] The BET specific surface area, the sulfate ion content, the sodium content, and the ratio of the sulfate ion content to the sodium content of the obtained zirconia were measured in the same manner as in Example 1. The results are shown in Table 1.

[0155] And, it carried out similarly to Example 1, and obtained the zirconia dispersion liquid of Example 2.

[0156] The liquid turbidity value of the obtained zirconia dispersion liquid was measured similarly to Example 1. The results are shown in Table 1.

Embodiment 3

[0158] Repeat 3 sets of solid-liquid separation and sulfate ion removal treatment, and repeat 3 times the process of washing the solid content recovered from the mixed solution with pure water to obtain zirconium hydroxide. Except that, carry out in the same manner as in Example 1. The zirconia of Example 3 was obtained.

[0159] The BET specific surface area, the sulfate ion content, the sodium content, and the ratio of the sulfate ion content to the sodium content of the obtained zirconia were measured in the same manner as in Example 1. The results are shown in Table 1.

[0160] And, it carried out similarly to Example 1, and obtained the zirconia dispersion liquid of Example 3.

[0161] The liquid turbidity value of the obtained zirconia dispersion liquid was measured similarly to Example 1. The results are shown in Table 1.

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Abstract

Provided are: a zirconium oxide which is capable of providing a dispersion liquid that has high transparency and excellent long-term stability; a zirconium oxide dispersion liquid; a zirconium oxide-containing composition; a coating film; and a display device. The present invention provides a zirconium oxide which is characterized by containing sulfate ions and sodium and having a ratio of the sulfate ion content to the sodium content, namely a (sulfate ion content (mg / kg)) / (sodium content (mg / kg)) ratio of 6 or less.

Description

technical field [0001] The invention relates to zirconia, a zirconia dispersion liquid, a zirconia-containing composition, a coating film and a display device. Background technique [0002] Nanoparticles are dispersed and used in paints, films, substrates, etc. for the purpose of adjusting the refractive index, controlling scattering, imparting functions such as hard coat properties, and improving mechanical strength. [0003] For example, transparency, refractive index, mechanical properties, etc. are required for functional films of plastic substrates used in display devices such as liquid crystal displays (LCD), plasma displays (PDP), and electroluminescent displays (EL). Therefore, a functional film is provided by coating a composition obtained by mixing inorganic oxide particles such as zirconia having a high refractive index and a resin on a plastic substrate (for example, refer to Patent Document 1). [0004] Furthermore, it is known that by adding zirconium with a h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G25/02C09D7/12C09D201/00H01L51/50H05B33/02
CPCC01G25/02C09D201/00H05B33/02C09D7/40C09D17/007G06F3/041C01P2006/12C01P2006/80
Inventor 板垣哲朗钉本有纪
Owner SUMITOMO OSAKA CEMENT CO LTD
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