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Modified metal-oxide composite sol, coating composition, and optical member

A coating composition and oxide technology, applied in the direction of tungsten compound, titanium compound, zirconium compound, etc., can solve the problem of thick edge thickness, etc., and achieve the effects of good weather resistance, high transparency, and high refractive index

Inactive Publication Date: 2010-08-25
NISSAN CHEM IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The refractive index of this lens is about 1.50, which is lower than that of a glass lens (about 1.52), so in the case of a lens for nearsightedness, there is a disadvantage that the edge thickness is thick

Method used

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Examples

Experimental program
Comparison scheme
Effect test

reference example 1

[0123] Reference example 1 (preparation of tungstic acid oligomer)

[0124] In a 200-liter stainless steel container, 5.7 kg of sodium tungstate (containing 69.2 mass % WO 3 , Daiichi Raw Element Chemical Industry Co., Ltd.) was diluted in 125 kg of pure water, and then made to flow through a hydrogen-type cation exchange resin (Amber Laite (registered trademark) IR-120B, Olugano Co., Ltd.) Pillar. After the cation exchange, 570 kg of pure water was added to the obtained tungstic acid aqueous solution for dilution, and then 852 g of isopropylamine was added under stirring to obtain a tungstic acid oligomer. The resulting tungstic acid oligomer, WO 3 0.56% by mass, isopropylamine / WO 3 The molar ratio was 0.86.

reference example 2

[0125] Reference example 2 (modulation of antimony pentoxide colloidal particles)

[0126] Add 8.5 kg of antimony trioxide (manufactured in Sanguo, Guangdong, containing 99.5% by mass of Sb) to a 100-liter stainless steel container 2 o 3 ), 41.0kg of pure water and 6.9kg of potassium hydroxide (containing 95% by mass KOH), slowly added 5.7kg of 35% by mass hydrogen peroxide under stirring. The resulting potassium antimonate aqueous solution, as Sb 2 o 5 15.1% by mass, 10.56% by mass as KOH, K 2 O / Sb 2 o 5 The molar ratio is 2.4. The resulting potassium antimonate aqueous solution 62.1kg is diluted to Sb with pure water 2 o 5 It was 2.5% by mass, and then it was made to flow through a column filled with a hydrogen-form cation exchange resin (Amberlite IR-120B, manufactured by Olugano Co., Ltd.). After the cation exchange, 4.5 kg of diisopropylamine was added to the obtained aqueous solution of antimony acid under stirring to obtain an aqueous sol of antimony pentoxide ...

reference example 3

[0127] Reference example 3 (preparation of tungsten oxide-tin oxide-silica composite colloidal particles)

[0128] No. 3 sodium silicate (containing 29.1% by mass SiO 2 , Fuji Chemical Co., Ltd.) 103g was dissolved in 1848g of pure water, and then, sodium tungstate Na 2 WO 4 2H 2 O (containing 69.1% by mass of WO 3 , Daiichi Dien Element Chemical Industry Co., Ltd.) 21.7g and sodium stannate NaSnO 3 ·H 2 O (containing 55.8 mass% SnO 2 , Showa Chemical Industry Co., Ltd. product) 26.9 g. Next, the resulting aqueous solution was passed through a column filled with a hydrogen-form cation exchange resin (Amberlite IR-120B, manufactured by Olugano Co., Ltd.), thereby obtaining 2353 g of an acidic tungsten oxide-tin oxide-silica composite sol ( pH value 1.9, containing 0.6 mass% WO 3 , 0.6% by mass SnO 2 , 1.3% by mass SiO 2 , WO 3 / SnO 2 The mass ratio is 1.0, SiO 2 / SnO 2 The mass ratio was 2.0. ).

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Abstract

To provide a sol of modified metal-oxide composite colloidal particles which are almost completely inhibited from being discolored by photoexcitation, contain titanium oxide excellent in light resistance and weatherability, and have a high refractive index. [MEANS FOR SOLVING PROBLEMS] The modified metal-oxide composite colloidal particles comprise: titanium oxide / tin oxide / zirconium oxide / tungsten oxide composite colloidal particles (A) which have a primary-particle diameter of 2-50 nm and have an SnO2 / TiO2 molar ratio of 0.1-1.0, ZrO2 / TiO2 molar ratio of 0.1-0.4, and WO3 / TiO2 molar ratio of 0.03-0.15, as cores; and tungsten oxide / tin oxide / silicon dioxide composite colloidal particles (B) having a primary-particle diameter of 1-7 nm with which the surface of each core has been coated.

Description

technical field [0001] The present invention relates to titanium oxide-tin oxide-zirconia-tungsten oxide composite colloidal particles (A) as the core, and the surface of the core is coated with tungsten oxide-tin oxide-silicon dioxide composite particles with a primary particle diameter of 1-7nm. The modified metal oxide composite colloidal particles of the colloidal particles (B), and a sol in which the modified metal oxide composite colloidal particles are dispersed in water and / or an organic solvent. The primary particle size of the titanium oxide-tin oxide-zirconia-tungsten oxide composite colloidal particles (A) is 2 to 50 nm, and the SnO 2 / TiO 2 The molar ratio of ZrO is 0.1~1.0, ZrO 2 / TiO 2 The molar ratio is 0.1 to 0.4, and WO 3 / TiO 2 The molar ratio is 0.03 to 0.15. [0002] In addition, the present invention relates to a coating composition and an optical component. A coating formed from the coating composition is excellent in warm water resistance, and eve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G41/00B82Y30/00C09K3/00
CPCC01G30/005C01G41/006C01G25/006C09C1/0081C01P2002/50C01P2004/84C01P2006/82C01P2006/10C01P2006/22C01P2004/64C01P2002/52C01P2006/60C01G41/02C01P2004/62B82Y30/00C01G23/00C01G41/00G02B1/11
Inventor 小山欣也浅田根子
Owner NISSAN CHEM IND LTD
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