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Organosol containing magnesium fluoride hydroxide, and manufacturing method therefor

A magnesium fluoride hydroxide, organosol technology, applied in magnesium fluoride, magnesium halide, nanotechnology for materials and surface science, etc., can solve the problem of no hydrophilic, low refractive index, no fluorine-based magnesium Compound hydrophilicity and other issues

Inactive Publication Date: 2011-01-26
CENT GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] There is no suggestion that the fluorine-based magnesium compound produced in the above precedent has excellent hydrophilicity, there is no report that magnesium fluoride hydroxide has hydrophilicity, and there is no report that it is hydrophilic and exhibits a low refractive index. material report

Method used

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  • Organosol containing magnesium fluoride hydroxide, and manufacturing method therefor
  • Organosol containing magnesium fluoride hydroxide, and manufacturing method therefor
  • Organosol containing magnesium fluoride hydroxide, and manufacturing method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0293] Preparation of "Example 1" organosol (Mg compound separate system)

[0294] Hereinafter, in "Example 1-1" to "Example 1-7", preparation examples of the organosol in the Mg compound-only system are shown. After drying the prepared organosol at 120°C, XRD (RINT-UltimaIII manufactured by Rigaku) ​​was used to diffract at a voltage of 40Kv×current of 40mA and a scan angle of 10-70°. As a result, an intensity of about 50-160cps and a half-width It is a broad peak of ±0.7-1.2°. This suggests that it is a substance with extremely low crystallinity, and it suggests that it is a substance close to an amorphous rather than a crystal. In addition, it was confirmed that the X-ray diffraction pattern of the ultrafine particles obtained in this example is similar to that of magnesium hydroxide fluoride (MgF 1.89 (OH) 0.11 ) consistent. As a representative example, the X-ray diffraction diagram of the organosol obtained in "Example 1-1" is shown in figure 1 .

Embodiment 1-1

[0295] "Example 1-1": MgCl 2 ·6 water salt / IPA system

[0296] Disperse 16.46 g (0.173 mol) of reagent grade magnesium chloride hexahydrate in 150 ml of isopropanol (hereinafter also referred to as IPA) at room temperature with stirring to obtain a suspension in which magnesium chloride is dispersed. To this suspension, 14.71 g (0.346 mol) of 47% hydrofluoric acid aqueous solution was added dropwise intermittently over 10 minutes at room temperature with stirring (HF / Mg=2.0). After hydrogen fluoride was added dropwise, stirring was continued for 8 hours to obtain a milky transparent slurry. The average particle diameter of the ultrafine particles present in this solution was 20 nm. The obtained sol was dried at 120°C, and the obtained X-ray diffraction pattern was shown in figure 1 .

Embodiment 1-2

[0297] "Example 1-2": MgCO 3 / EGME system

[0298] Disperse 17.331 g (0.188 mol) of special grade magnesium carbonate in 200 ml of ethylene glycol monoethyl ether at room temperature under stirring conditions to obtain a suspension formed by dispersing magnesium carbonate. To this suspension, 16.35 g (0.417 mol) of a 51% hydrofluoric acid aqueous solution was intermittently added dropwise over 10 minutes at room temperature with stirring (HF / Mg=2.22). After the hydrogen fluoride aqueous solution was added dropwise, stirring was continued for 8 hours to obtain a milky transparent slurry. The average particle diameter of the ultrafine particles present in this solution was 15 nm.

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Abstract

Provided are an organosol for forming a coating that can remain hydrophilic for a long time even in a situation with no exposure to light, and a manufacturing method thereof. The organosol is created by dispersing a magnesium fluoride compound obtained by reacting, at a minimum, a magnesium compound (the main raw material) with a solution containing hydrogen fluoride, in an organic solvent. The organosol is characterized by containing minute particles of a magnesium fluoride compound, with mean particle diameter from 5 to 500 nm.

Description

technical field [0001] The present invention relates to a magnesium-containing organosol for imparting hydrophilicity to the surface of an article, and more specifically, to an organic solution containing fine particles of magnesium fluoride having a hydroxyl group, a method for producing the same, and an organosol using the same Hydrophilic substrate. The organosol may further contain a composite fluoride with other metals or other metal oxides, or may be a composite organosol further containing a filler for improving hydrophilicity. Background technique [0002] When the surface of the base material is hydrophilic, since a film of water stretches on the surface, diffuse reflection due to water droplets can be prevented and blurring can be prevented. In addition, the water film on the surface sometimes exhibits a self-cleaning effect that floats the dirt attached to the surface and removes it. Due to this property, hydrophilic films are used in a wide range of fields such...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F5/28
CPCG02B27/0006F28F13/18C01P2002/72G02B1/105G02B27/0018C01P2004/64F28D15/02F28F2245/02C01F5/28C01P2004/62B82Y30/00Y10T428/258Y10T428/31678G02B1/18G02B1/118
Inventor 杉本敏明坂本多门高信尚史
Owner CENT GLASS CO LTD
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