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Curable composition and cured material of the same

A composition and compound technology, applied in the direction of coating, etc., can solve the problems of weakening transparency, reducing weight, easy to change color, etc., and achieve the effects of excellent handling performance, high surface hardness, and excellent stability

Inactive Publication Date: 2015-01-28
SHOWA DENKO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, many attempts have been made in recent years to use plastics instead of glass plates because glass plates have the following problems: they are fragile; they cannot be bent; they are not suitable for weight reduction due to their specific gravity; etc.
However, since the composition disclosed in Patent Document 4 contains sulfur, the material is easily discolored or degraded by heat, thus possibly impairing transparency

Method used

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  • Curable composition and cured material of the same
  • Curable composition and cured material of the same
  • Curable composition and cured material of the same

Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0323] [Preparation Example 1] Preparation of Surface-Modified Silica Fine Particles (A-1)

[0324] As the silica fine particles (α) to be subjected to surface treatment, colloidal silica (silica fine particle content: 30% by mass, average particle diameter: 10-20 nm, trade name : IPA-ST, produced by Nissan Chemical Industries, Ltd.).

[0325] To a separable flask, add 100 parts of colloidal silica dispersed in isopropanol (amount includes solvent); to this separable flask, add 3 parts of gamma-methacryloxyoctyltrimethoxysilane (MOS) and 9 parts of phenyltrimethoxysilane (PhS) and mixed by stirring, further added 3.9 parts of hydrochloric acid with a concentration of 0.1825% by mass and stirred the mixture at 25° C. for 24 hours; (α) surface treatment, and then a dispersion containing the surface-modified silica fine particles (A-1) is obtained.

[0326] Loss of silane compound (herein, MOS) by hydrolysis was confirmed by gas chromatography (Model 6850; produced by Agilent...

preparation Embodiment 2

[0327] [Preparation Example 2] Surface-modified silica fine particles (A-2)

[0328] A dispersion containing surface-modified silica fine particles (A-2) was obtained in the same operation as in Preparation Example 1, except that in Preparation Example 1 for silica fine particles (α) The type and amount of each component of the surface treatment and the amount of hydrochloric acid became those shown in Table 1. The amounts added are summarized in Table 1.

[0329] [Table 1]

[0330]

[0331] The abbreviations in the table have the following meanings:

[0332] MOS, γ-methacryloxyoctyltrimethoxysilane;

[0333] MPS, γ-methacryloxypropyltrimethoxysilane;

[0334] PhS, phenyltrimethoxysilane.

[0335] The unit of the values ​​in the table is parts by mass.

Embodiment 1

[0337] Next, 24 parts by mass of trimethylolpropane triacrylate (trade name: KAYARAD, abbreviation: TMPTA, produced by NIPPON KAYAKU Co., Ltd., Tg of homopolymer: >250°C) was added to 16 parts by mass for surface treatment Silica fine particles (A-1) and mixed uniformly. Volatile components were then removed by heating at 40° C. under a reduced pressure of 100 kPa with stirring.

[0338] Subsequently, the resulting mother liquor was mixed with 60 parts by mass of 9,9-bis[4-(2-acryloyloxyethoxy)phenyl]fluorene (trade name: A-BPEF, produced by Shin-Nakamura Chemical Co., Ltd. .Production) and 6:1 mixture of benzyl acrylate (Bz-A, produced by NIHON JYORYU KOGYO CO.LTD), 0.15 parts by mass of tetramethylpiperidinyl methacrylate (trade name: FA-712HM, produced by Hitachi Chemical Co., Ltd.) and 0.15 parts by mass of 3,9-bis[2-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionyloxy]-1,1 -Dimethylethyl]-2,4,8,10-tetraoxaspiro[5.5]undecane (trade name: Sumilizer GA-80, manufactured b...

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Abstract

[Object] Provided are a curable composition, which has low viscosity and excellent handling properties and also excellent stability during storage, and a cured material obtained by curing the curable composition, which cured material has excellent transparency and a small Abbe number. [Solution] A curable composition containing a silica fine particle (A); a polymerizable compound(s) (B) comprising at least one selected from a (meth)acrylate compound(s) (B1) having one or more ethylenically unsaturated group and having an aromatic ring structure, and a (meth)allyl compound(s) (B2) having one or more ethylenically unsaturated group and having an aromatic ring structure; and a polymerization initiator(s) (C); wherein the silica fine particle (A) is obtainable by subjecting the silica fine particle before the surface treatment to a surface treatment with a surface treatment agent containing a silane compound(s) (D) represented by the general formula (1) below and a silane compound(s) (E) represented by the general formula (2) below.

Description

technical field [0001] The present invention relates to curable compositions and cured materials thereof, and more particularly to curable compositions and cured materials thereof useful as optical materials or electronic materials. Background technique [0002] With the recent development of technology in optical industries such as optical devices, optical communications and displays, materials with excellent optical properties are required. Materials include, for example, optical lenses, optical disc substrates, plastic substrates for liquid crystal display elements, substrates for color filters, substrates for organic EL display elements, substrates for solar cells, touch panels, optical elements, optical Sealing media for waveguides and LEDs, etc. Among those, optical properties of optical lenses, optical elements, optical waveguides, sealing media of LEDs, and the like are strongly required. [0003] In general, inorganic glass is commonly used as a forming material f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K3/36C08K9/06
CPCC08K3/36C08K9/06C08F220/10C08F220/30C08F222/1006C08F230/08C08F290/06C08F292/00C09D4/00C09D183/00C09D7/40
Inventor 高桥信行浦川庆史宫田秀雄山木繁
Owner SHOWA DENKO KK
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