Nanocomposite material for the production of index of refraction gradient films

A nanocomposite, refractive index gradient technology, applied in the fields of nanotechnology, nanotechnology, nanotechnology, etc. for materials and surface science, which can solve the problem of equivalence of confined liquid matrices

Inactive Publication Date: 2005-01-19
TOMOEGAWA PAPER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantage of this method is that it is limited to a liquid matrix phase, which creates handling problems when applying holography and shielded lighting techniques

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1: Preparation of Optical Nanocomposites for Holography

[0039] a)Zr(OPr) 4 Preparation of / MAS (1:1):

[0040] 65.4 grams (0.20 moles) of Zr (OPr) 4 Place in a 250 ml three-necked flask and cool in an ice bath. 17.2 g (0.20 mol) of methacrylic acid (MAS) was slowly (15 minutes) added dropwise thereto with stirring. After complete addition, the reaction mixture was removed from the ice bath after 10 minutes and then stirred at 25°C.

[0041] b) Preparation of silane-PVB mixture

[0042] Add 24 grams (0.20 moles) of dimethyldimethoxysilane (DMDS) to 49.6 grams (0.20 moles) of methacryloxypropyltrimethoxysilane (MPTS), and stir at 25°C for 5 minute. After adding 9.05 g of 0.1 N HCl, stirring was continued at 25° C. for 10 minutes until the reaction mixture became clear. Then 49.92 g of polyvinyl butyral (30 wt % in 2-PrOH solution) was added thereto and stirred at 25° C. for 5 minutes.

[0043] c) Preparation of the matrix

[0044] 22.27 g of the Zr(OPr)...

Embodiment 2 to 4

[0046] A 1:1 ratio of Zr(OPr) was prepared as described in Example 1 4 / MAS.

[0047] Put MPTS in a second container, and add thereto the required amount of DMDES shown in Table 1, PVB solution (30 wt% ethanol solution) and TEG bis(2-ethylhexanoate) and heat at 25°C Stir for 15 minutes. 0.1 N HCl was then added and stirred at room temperature for about 10 minutes until the originally cloudy reaction mixture became clear. Then Zr(OPr) was added slowly by means of a dropping funnel under stirring 4 / MAS. After complete addition, stir at room temperature for 4 hours. The required amount of water was then added dropwise and stirred overnight at room temperature. then add  Crodamer UVA 421. After another 15 minutes, add  Irgacure 819. The batch was then diluted with isopropanol and added  Byk 306. Stir until completely combined.

[0048] Table 1

[0049] Example 2

Example 3

Example 4

MPTS

18.6 grams

0.075 mol

24.8 grams

0.1 ...

Embodiment 5 to 14

[0053] Zr(OPr) was prepared as described in Example 1 4 / MAS:

[0054] The MPTS was placed in a second container, to which the desired amount of DMDES, PVB solution (30 wt% ethanol solution) and isopropanol were added and stirred at 25°C for 15 minutes. Then, 0.1N HCl was added thereto and stirred at room temperature for about 10 minutes until the originally cloudy reaction mixture became clear. Then slowly add the required amount of Zr(OPr) with stirring by means of a dropping funnel 4 / MAS. After complete addition, stir at room temperature for 4 hours. Then the required amount of water was added dropwise and stirred overnight at room temperature. Add Irgacure 819 and Byk 306. Stir until thoroughly combined (primer). Plasticizers and sensitizers according to Table 2 are then added.

[0055] Primer

[0056] MPTS

139 grams

0.56 mol

PVB solution

601.2 grams

Isopropanol

365.7 grams

DMDES

82.9 grams

0.56 mol

...

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Abstract

The invention relates to solid or gel-type nanocomposite material which can be polymerised, containing a) 4.9 95.9 wt. % of a soluble polymer; b) 4-95 wt. % of a partially or totally condensed silane selected from the group of epoxyalkoxysilanes, alkoxysilanes and alkylalkoxysilanes, the silane having an inorganic condensation degree of between 33-100% and an organic conversion degree of between 0-95%; c) 0-60 wt. % of an acrylate; d) 0.1-50 wt. % of surface modified nanometric particles selected from the group of oxides, sulphides, selenides, tellurides, halogenides, carbides, arsenides, antimonides, nitrides, phosphides, carbonates, carboxylates, phosphates, sulphates, silicates, titanates, zirconates, aluminates, stannates, plumbates and a mixed oxides; e) 0-50 wt.-% of a plasticiser, f) 0-5 wt. % of a thermal or photochemical cross-linking initiator, sensitizer, auxiliary wetting agent, adhesive agent, antioxidant, stabiliser, colouring agent, photochrome material and thermochrome material in relation to the total weight (dry weight) of the nanocomposite material.

Description

technical field [0001] The present invention relates to a nanocomposite material for the preparation of a refractive index gradient material, which has a material gradient caused by nanoscale particles, and to the use of this refractive index gradient material for the preparation of thin films with a refractive index gradient, Especially for holographic and shielded lighting applications, and for gradient index lenses in imaging optics. Background technique [0002] It is known that a refractive index gradient can be formed by the diffusion of monomers with an increased or decreased refractive index relative to the surrounding liquid matrix (US 5,552,261; US ​​5,529,473). The "Colburn-Haines effect" known in photopolymers for directional diffusion with subsequent polymerization in heated or illuminated areas leads to an increase in density and thus to an increase or decrease in the refractive index. For organic monomers, however, this change is small because the resulting d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03H1/02B32B27/18C08J7/04C08K3/00C08K9/04C08L83/04C08L101/00C09D4/02C09D7/12C09D163/00C09D183/06C09D183/07C09D201/00G02B1/04G02B3/00
CPCC09D183/06G02B1/04G03H2260/12C08L83/06C08K3/0033C08K3/013C08L2666/04B82Y30/00C08K9/00
Inventor 原田隆正北文雄A·奇默曼U·戴罗M·曼尼格P·W·奥利维拉H·舒密特H·史奇奈德
Owner TOMOEGAWA PAPER CO LTD
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