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Titania sol chelated organic complexes, its preparation method and composition comprising the same

An organic complex, titanium dioxide technology, applied in the direction of titanium oxide/hydroxide, titanium dioxide, nanostructure manufacturing, etc., can solve the problems of difficult storage stability, poor compatibility, etc.

Active Publication Date: 2008-03-05
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the product has poor compatibility with organic solvents, making it difficult to apply it to ultra-high refractive index and highly transparent coating compositions and ensure storage stability during processing

Method used

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  • Titania sol chelated organic complexes, its preparation method and composition comprising the same
  • Titania sol chelated organic complexes, its preparation method and composition comprising the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] Add 1500 g of distilled water to the reactor, and slowly add 40 g of isopropanol and 240 g of titanium tetraisopropoxide (TTIP; DuPont) to the distilled water.

[0092] The temperature of the reactor was increased to 80°C, and then 42 g of nitric acid (65 wt%) was added, and then the sol-gel reaction was carried out at 80°C for 2 hours. Add 40 g of acetylacetone, an organic complex, and then react at 80°C for 5 hours.

[0093] The reactant was dried at 80°C for 14 hours to obtain titanium dioxide-organic complex powder.

[0094] The titanium dioxide-organic complex powder is cooled to room temperature, and 200 g of water is added as a spreading solvent to obtain a redispersed titanium dioxide-organic complex sol.

Embodiment 2

[0096] A titanium dioxide-organic complex sol was prepared in the same manner as described in Example 1, except that the temperature of the reactor was increased to 90°C.

Embodiment 3

[0098] A titanium dioxide-organic complex sol was prepared in the same manner as described in Example 1, except that the temperature of the reactor was increased to 99°C.

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Abstract

The invention relates to a titanium dioxide-organic complex collosol, a preparing method thereof and a combination comprising the collosol is used for forming moderate, high and ultrahigh refractive index coating layers. The preparing method comprises following steps: through adding organic complex in titanium dioxide collosol generated by a collosol-gel reaction, preparing titanium dioxide-organic complex; drying the product; redispersing the product in a spreading solvent. The titanium dioxide-organic complex collosol has monodispersity, excellent compatibility with the organic solvent and storage stability. Specially, titanium dioxide nanometer particles are dispersed with high high concentration and redispersed in the organic solvent to keep transparent, so the titanium dioxide-organic complex collosol can be used for forming paint combination with moderate, high and ultrahigh refractive index coating layers.

Description

Technical field [0001] The invention relates to a titanium dioxide-organic complex sol, a preparation method thereof, and a composition containing the sol for forming a medium, high, and ultra-high refractive index coating. More specifically, the present invention relates to a titanium dioxide-organic complex sol used as a filler in a composition for forming medium, high, and ultra-high refractive index coatings. The composition can be applied to all applications requiring high Transparent glasses, industrial safety glasses and leisure goggles, the composition sol has excellent compatibility with the organic solvent of the coating composition, storage stability and high concentration in the well-dispersed titanium dioxide nanoparticles Monodispersity; a method for preparing the sol, and a composition containing the sol for forming medium, high, and ultra-high refractive index coatings. Background technique [0002] Since conventional glass lenses have excellent compressibility an...

Claims

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Application Information

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IPC IPC(8): C01G23/053C03C17/25
CPCB82B3/00B82Y30/00C01G23/047C09D5/00C09D7/40
Inventor 任相赫洪瑛晙
Owner LG CHEM LTD
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