Siloxane coating material, optical articles and process for the production of siloxane coating materials

A siloxane-based, optical product technology, applied in chemical instruments and methods, optics, optical components, etc., can solve the problems of storage stability, lower refractive index of transparent coating film, lower hardness and other problems, and achieve excellent anti-reflection Excellent durability, storage stability, excellent scratch resistance

Active Publication Date: 2007-05-23
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, if the introduction amount of the silicon oxide fine particles is increased too much, the refractive index of the obtained transparent coating film will be further lowered, but the silicon oxide fine particles and the matrix material cannot be sufficiently bonded, and there is a problem that the hardness is lowered.
In addition, the paint for coating film formation containing a large amount of the silicon oxide fine particles tends to cause secondary aggregation between the particles, and the aggregates settle from the paint, etc., and there is a problem in terms of storage stability when used as a paint for coating film formation.

Method used

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  • Siloxane coating material, optical articles and process for the production of siloxane coating materials
  • Siloxane coating material, optical articles and process for the production of siloxane coating materials
  • Siloxane coating material, optical articles and process for the production of siloxane coating materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0148] 95.2 g (0.7 mol) of methyltrimethoxysilane and 65.4 g (0.3 mol) of trifluoropropyltrimethoxysilane were dissolved in 300 g of propylene glycol monomethyl ether and 100 g of isopropanol. In this solution, the silicon oxide microparticle dispersion (isopropanol dispersion type, solid content concentration of 20.5%, Catalyst Chemical Industry Co., Ltd.) 297.9 g, 54 g of water, and 1.8 g of formic acid. After dropping, heat the resulting solution at a bath temperature of 40°C for 2 hours, then heat the solution at a bath temperature of 85°C for 2 hours, raise the internal temperature to 80°C, heat for 1.5 hours, and then cool to room temperature to obtain polymer solution A.

[0149] To the obtained polymer solution A, 4.8 g of tris(acetoacetate)aluminum (trade name Aluminum Chelate A(W), manufactured by Kawaken Fine Chemicals Co., Ltd.) was dissolved in 125 g of methanol. As an aluminum-based curing agent, 1,500 g of isopropyl alcohol and 250 g of propylene glycol monome...

Embodiment 2

[0154] 95.2 g (0.7 mol) of methyltrimethoxysilane and 65.4 g (0.3 mol) of trifluoropropyltrimethoxysilane were dissolved in 300 g of propylene glycol monomethyl ether and 100 g of isopropanol. In this solution, a sol of silicon oxide microparticles with a number average particle diameter of 12 nm and no cavity inside (trade name IPA-ST, manufactured by Nissan) dispersed in isopropanol was dropped while stirring while keeping the reaction temperature not exceeding 30°C. Manufactured by Chemical Industry Co., Ltd., 730 g of solid content (30%), 60 g of water, and 2 g of formic acid. After dropping, heat the resulting solution at a bath temperature of 40°C for 2 hours, then heat the solution at a bath temperature of 85°C for 2 hours, raise the internal temperature to 80°C, heat for 1.5 hours, and then cool to room temperature to obtain polymer solution B.

[0155] To the obtained polymer solution B, 4.8 g of tris(acetoacetate)aluminum (trade name Aluminum Chelate A (W), manufact...

Embodiment 3

[0158] Dissolve 109.0 g (0.8 mol) of methyltrimethoxysilane, 56.8 g (0.1 mol) of heptadecafluorodecyltrimethoxysilane, and 12 g (0.1 mol) of dimethyldimethoxysilane in 300 g of diacetone alcohol, Isopropanol 100g. In this solution, a sol of silicon oxide microparticles with a number average particle diameter of 12 nm and no cavity in the interior dispersed in methyl isobutyl ketone (trade name MIBK- ST, manufactured by Nissan Chemical Industry Co., Ltd., 250 g of solid content (30%), 60 g of water and 2 g of acetic acid. After dropping, heat the resulting solution at a bath temperature of 40°C for 2 hours, then heat the solution at a bath temperature of 85°C for 2 hours, raise the internal temperature to 80°C, heat for 1.5 hours, and then cool to room temperature to obtain polymer solution C.

[0159] To the obtained polymer solution C, a substance obtained by dissolving 3.8 g of magnesium bis(ethyl acetoacetate) in 250 g of methanol was added as a magnesium-based curing age...

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Abstract

The invention provides a coating material containing silica fine particles, a siloxane compound, and a curing agent and giving an even coating film in the case it is used for forming a coating film. The invention gives a siloxane-based coating material excellent in storage stability and giving high surface hardness of a coating film when the coating material is used for forming the coating film. The invention also provides an optical article excellent in anti-reflection property and scratching resistance.

Description

technical field [0001] The present invention relates to silicone-based paints and optical articles containing silica fine particles and silicone compounds. The optical article of the present invention is used for an antireflection coating, an antireflection film, an antireflection sheet, an optical filter, an optical lens, a display, and the like. Background technique [0002] Anti-reflection coatings are used in optical products such as lenses and image display devices such as computer monitors to reduce the reflection of external light sources such as sunlight or fluorescent lamps and improve visibility, and require less reflection of visible light. As a technique for reducing reflection, it is known to reduce the reflectance by covering the surface of a substrate with a transparent coating film having a low refractive index (see Patent Document 1). Further, by forming a high-refractive-index layer on the substrate and forming a low-refractive-index layer thereon, reflect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04B32B7/02B32B27/00C08J7/04C09D5/16C09D5/32C09D7/12C09D183/08G02B1/10C09D7/61G02B1/11
CPCC09D5/006C08K3/36C09D7/1216C09D7/1266C09D7/1275C09D183/04G02B1/105G02B1/11C09D7/61C09D7/67C09D7/68G02B1/14
Inventor 诹访充史细野博竹田清佳谷口孝南口尚士
Owner TORAY IND INC
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