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Metal oxide nanoparticle, method for producing the same, nanoparticle dispersed resin and method for producing the same

A nanoparticle, oxide-based technology, applied in chemical instruments and methods, titanium oxide/hydroxide, zirconium oxide, etc., can solve the problem of TiO2 particles coloring red, and achieve high refractive index, high refractive index, no Excellent color transparency

Inactive Publication Date: 2009-10-21
HOYA CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, at this time, there is a problem that TiO2 particles are colored red

Method used

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  • Metal oxide nanoparticle, method for producing the same, nanoparticle dispersed resin and method for producing the same

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preparation example Construction

[0064] The preparation of the reverse micellar solution can be carried out by mixing the above-mentioned non-polar solvent, water, surfactant and acid, and usually fully stirring at room temperature to form a homogeneous solution.

[0065] [(B) process]

[0066] This (B) process uses the interior of the reverse micelles formed in the above (A) process as a reaction field, and makes an alkoxide compound of one or more metals M selected from Ti, Zr, Hf, Nb and Ta, and an alkoxide compound having A step of attaching a silicon and / or germanium compound having a non-hydrolyzable organic functional group and a hydroxyl group around the metal M oxide particles by hydrolyzing and condensing the silane coupling agent of the non-hydrolyzable organic functional group and the hydrolyzable group, respectively.

[0067] In the step (B), the alkoxide compound of the metal M is not particularly limited as long as it can form an oxide of the metal M through hydrolysis or condensation reaction ...

Embodiment 11

[0146] Embodiment 1.1[MPTS-TiO Synthesis of nanocrystals]

[0147] Di(2-ethylhexyl) sodium succinate sulfonate (AOT) (manufactured by Tokyo Chemical Industry Co., Ltd.) 8.90 g, distilled water (manufactured by Wako Pure Chemical Industries) 3.60 ml, p-toluenesulfonic acid monohydrate (PTSH: Wako Pure 0.77 g of xylene (manufactured by Kanto Chemical Industry Co., Ltd.) was added to 100 ml of xylene (manufactured by Kanto Chemical Industry Co., Ltd.), and stirred at room temperature until a uniform solution was obtained to prepare a reverse micellar solution. To this solution, 3.78 ml of mercaptopropyltrimethoxysilane (MPTS) (manufactured by Tokyo Chemical Industry Co., Ltd.) was added, followed by stirring at room temperature for 20 hours. A solution obtained by dissolving 5.68 g of titanium tetraisopropoxide (TTIP) (manufactured by Aldrich) in 40 g of n-hexanol was added dropwise to this solution. Furthermore, in order to promote the crystallization of TiO fine particles and ...

Embodiment 12

[0151] Embodiment 1.2[MPTS-ZrO Synthesis of nanocrystals]

[0152] Except using 7.67 g of tetra-n-butoxy zirconium (ZTB: manufactured by Wako Pure Chemical Industries) instead of TTIP, the same operation as in Example 1.1 was carried out to obtain 2.12 g of ZrO2 nanocrystals with MPTS introduced on the surface.

[0153]

[0154] From the results of XRD and TEM, it can be seen that the nucleus contains tetragonal ZrO2 with an average particle size of 3.0 nm. From the fact that a peak corresponding to 3-mercaptopropyl was measured in the 1H-NMR spectrum, it was confirmed that a functional group derived from MPTS was introduced on the particle surface. In addition, the volume fraction of the tetragonal ZrO2 core is 0.82, and the refractive index is 1.96.

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Abstract

Disclosed is a metal oxide nanoparticle having a surface-modified core / shell structure having an organic functional group in the surface. This metal oxide nanoparticle is characterized in that the element constituting the metal oxide for the core is at least one element selected from group 4 elements and group 5 elements of the periodic table, and the core is obtained by controlling the refractive index. Also disclosed is a nanoparticle dispersed resin containing a matrix resin and the metal oxide nanoparticles dispersed in the matrix resin. The metal oxide nanoparticle is not colored while having high refractive index, and can be uniformly dispersed in a matrix resin without causing secondary aggregation. The nanoparticle dispersed resin obtained by uniformly dispersing the metal oxide nanoparticles in a matrix resin has high refractive index and excellent colorless transparency.

Description

technical field [0001] The present invention relates to metal oxide-based nanoparticles, a method for producing the same, and a nanoparticle-dispersed resin, and a method for producing the same. More specifically, the present invention relates to a core-shell structure in which high-refractive-index metal oxide fine particles having a core with an average particle diameter of about 1 to 20 nm and whose surface is modified with an organic functional group do not generate secondary particles in the matrix resin. Agglomerated and uniformly dispersed metal oxide nanoparticles having a high refractive index without coloring, a method for efficiently producing the metal oxide nanoparticles, and uniform dispersion of the metal oxide nanoparticles in a matrix resin The resulting nanoparticle-dispersed resin, which is suitable as a plastic eyeglass lens, an LED (light-emitting diode) sealing agent, etc., has a high refractive index and is excellent in colorless transparency, and an eff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/04C01G23/053C01G25/02C08L101/00
CPCC09C1/3692C09C1/3684C08J5/005C09C3/08C01P2002/72C01P2004/64C09C1/3669C09C3/006B82Y30/00Y10T428/2993
Inventor 德光秀造
Owner HOYA CORP
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