JPS60168101A - Plastic lens - Google Patents

Abstract

PURPOSE:To improve resistance to wear, heat and hot water by using the specific components which prevent from cracking even if the film thickness of a hard coat layer is increased. CONSTITUTION:Single or multiple layers of antireflection films are provided on the surface of a lens on which the coating compsn. contg. >=1 kind of the monomers expressed by the formulas I , II and III, colloidal silical having 1-100mmu grain size, 1 or >=2 kinds of hydrolyzate or partial condensate of the silicon compd. expressed by the formula VI, multifunctional epoxy compd. and curing catalyst as an essential component is coated and cured. R<1>, R<2> in the formulas I , II, III are a hydrocarbon group (C1-C12) and the formula VI. R<5>, R<6> in the formula VI denote a hydrocarbon group (C1-C6), etc. and R<7> denotes -O-, -S-, -SO2-, etc. X denotes halogen except fluorine and hydrocarbon group (C1-C6), (a), (b) denote respectively independently 0-4 integers. R<3>, R<4> indicate either of a hydrocarbon group (C1-C6) or aryl group. R<8> in the formula VI is an org. group contg. at least one kind selected from vinyl, amino, imino and epoxy and R<9> is hydrogen, hydrocarbon group (C1-C6) and hydrogen halide group (C1-C6), R10 is a hydrocarbon group (C1-C5), acyl group (C1-C4), etc., (a) is 0, 1 or 2 and (b) is 0, 1 or 2 in which a+b<=2.

Description

[Detailed Description of the Invention] [Technical Field] The present invention provides heat resistance, hot water resistance,
The present invention relates to a synthetic resin lens provided with a coating film having excellent surface hardness such as abrasion resistance, chemical resistance, impact resistance, and resistance to staining, and on which a single M or multilayer antireflection film is provided.

[Conventional technology]

Synthetic resin lenses, especially diethylene glycol bis(allyl carbonate) resin lenses, are safer (impact resistance), easier to process, more fashionable (resistant to staining), and have anti-reflection technology compared to inorganic glass lenses. , has become rapidly popular in recent years due to the development of hard anti-reflection technology. Regarding the use of plastic eye lenses, there is a demand for plastic lenses with anti-reflection coatings that have the same performance as inorganic glass lenses with anti-reflection coatings, as a higher-grade lens.

In recent years, various antireflection multi-coated plastic lenses have been put on the market. However, this anti-reflection treatment uses a vacuum evaporation method to form a thin film of inorganic material.
It is difficult to improve the adhesion between the plastic and the deposited material, and the lenses and the inorganic thin film have different compatibility and expansion coefficients, resulting in severe deterioration due to high and low temperature thermal cycles.
Furthermore, the anti-reflection coating thin film peels off due to scratches caused by sand or the like, which is a problem in that the durability of the product in daily use is poor.

Conventionally, in order to improve this drawback and meet consumer demands, 5ho2 and AlO2 are used as inorganic vapor deposition materials as main raw materials, and an inorganic layer is applied to a thickness of 0.5 to 3.0 μm to improve the strength of the thin film. This method is currently the most common. On the other hand, some commercially available hard coat lenses or lenses in which antireflection processing is applied on a cured film of a composition developed as a hard coat are also commercially available.

However, in all of these, the adhesion between the anti-reflection coating thin film and the lens material or hard coat lens material is insufficient, and the heat resistance, hot water resistance, abrasion resistance, and durability are insufficient.
It reveals unsatisfactory shortcomings in quality reliability.

However, it has disadvantages such as blister phenomenon (swelling of the surface) that occurs under high humidity conditions such as sweating or the bathroom, and peeling that progresses one after another due to deep scratches. Not only has no solution been found to improve adhesion and surface durability, but on the contrary, it has been found that impact resistance decreases due to thickening of the inorganic thin film.

In order to improve the abrasion resistance of the antireflection coating of a synthetic resin lens, the hardness of the lens fabric and hard coat layer is required. However, the lens fabric ((:R-39
, polycarbonate) etc.), the hardness of the hard coat layer is required due to the limitations.
Affected by lens fabric.

There are two ways to solve this problem: one is to significantly improve the hardness of the hard coat layer, and the other is to make the hard coat layer itself thick enough to be unaffected by the lens fabric (5 μm or more). In the former, increasing the ratio of inorganic components generally improves the adhesion with the antireflection film, but there is a problem with the adhesion with the lens. In the case of the latter, if you wait for a certain degree of hardness, increasing the film thickness will make it easier for cranks to enter the coating film, and sometimes even the lens itself. This is considered to be due to changes in volumetric shrinkage of the coat film.

Attempts have been made to solve these drawbacks, but there are limits to their application and complete commercialization is difficult.

Development of hard coat layer, anti-reflection film and interface surface treatment by 1/-1 mm Although many reports have been made, such as the Japanese Patent Publication No. 57-42665, there are very few complete reports.

〔the purpose〕

An object of the present invention is to comprehensively solve the above-mentioned problems.

The object of the present invention is to obtain a synthetic resin lens that is particularly excellent in abrasion resistance, heat resistance, and hot water resistance by using a component that does not cause cracks even when the thickness of the hard coat layer is increased.

Furthermore, it must have a good balance of chemical resistance, impact resistance, and dyeability, which are practically essential.

〔overview〕

That is, the present invention provides a composition characterized in that a single layer or multilayer antireflection film is provided on the surface of a lens coated and cured with a coating composition containing the following A, B, C, D, and E as main components. This invention relates to resin lenses.

A, one or more monomers whose general formulas are represented by (1), (n) and (Ili).

(In the formula, 1+, 1(* represents a hydrocarbon group (Cs-Cl2), and, or a halogen and hydrocarbon group excluding fluorine (01 to CB) scLeb each independently represents an integer from θ to 4. ] In formula 1, R4 is a hydrocarbon group ((l-
Cs+L Indicates either - of the aryl group. ) Colloidal silica C0 with B1 particle size of 1 to 100 mμ has the general formula (IV
) A hydrolyzate or partial condensate of one or more of the siliceous compounds represented by:

9 1.

R5-5z-(oRxo), -0-b (wherein R8 is an organic group containing at least one selected from vinyl, amine, imino, epoxy I (meth)acryloxy, phenyl, alkylthiol, and thiol group, R
″ is hydrogen, a hydrocarbon group (C1 to C6), and a halogenated hydrocarbon group (C1 to C6), Rlo is a hydrocarbon group cC1
~CI, ], alkoxyalkyl M (Cs-Cs) and acyl group (CI-04), a is 0, 1 or 2. b
is 0.1 or 2, and α+b≦2) D, polyfunctional epoxy compound E, and curing catalyst The present invention will be described in detail below.

The compounds represented by the general formulas (1), (II), and [m], which are component A, hardly cause volumetric contraction during polymerization. Therefore, when applied to the lens surface, it is possible to prevent cracks in the hard coat layer itself and cracks in the lens due to stress caused by shrinkage of the hard coat layer. A
The content of the component is determined by the ratio with components B, C, and D, but in order to fully perform its function, it is preferably 5 parts by weight or more, and considering the adhesion with the inorganic antireflection thin film. , 40 parts by weight or less is desirable. By adding this human component,
Since the film thickness can be increased, wear resistance can be improved. Furthermore, the lens fabric and anti-reflection thin film had problems with heat resistance and hot water resistance due to expansion and contraction, but this can be resolved by increasing the thickness of the hard coat layer. This problem was solved because the effect as a cushion can be obtained.

Typical examples of component A include 2,2-bis(4'-(1'-oxacycloheptane-earth pillow 8", 11"-dioxacyclopentane-91-
Methyloxy)phenyl]furopane, 2゜2-bisC4
'-(1'-oxacyclohexane-61-7'', 10
'-dioxacyclopentane-81-methyloxy)phenyl]furopane, 1,2-bis(4l-(11-oxacyclopentane-71-spiro-81°11"-dioxacyclopentane-91-methyloxy) phenyl]propane, bis-(4-(1', 5'-dioxacyclohexane-61-spiro-7', 11'-dioxacyclohexane-91-methyloxy)phenylcomethane,
Bis-1,2C9'-(1', 5'-dioxacyclohexane-6'-spiro-7', 1]'-dioxacyclohexane)]ethane, 1,4-diethyl-8,5,8
-) Dioxabidichloro[2,22]-octane, 1,4
-dimethyl-8,5,8-trioxabicyclo[2,2
,2)-octane. 1-Methyl-4-sobrovir-8
, 5,8-triochylybicyclo(2,2,2)-octane, and the like.

The colloidal silica having a particle size of 1 to 100 vLμ as component B refers to one in which cylindrical silicic anhydride is dispersed in a dispersion medium 1, such as water, alcohol, or cellosolve.
It is manufactured by a well-known method and is commercially available. In the practice of the present invention, those having a diameter of 5 to 40 m and μ are particularly useful. Component B is an important component for adhesion with the inorganic antireflection thin film, wear resistance during removal, and durability.

The siliceous compound represented by the general formula (Ml) of component C is an essential component for the retention properties of the lens, hard coat layer, hard coat layer and inorganic anti-reflection film, and also has a silica compound ('
It is effective in improving #I impact resistance), surface j abrasion resistance, chemical resistance, and dyeability. Specific examples include vinyltrimethoxysilane, vinyltriethoxysilane, vinylacetoxysilane, γ-aminopropyltrimethoxysilane, γ-
Glycidoxypropyltrimethoxysilane, γ-glycidoxypropylitriethoxysilane, γ-glycidoxypropylmethyldimethoxysilane, β-(8,4-epoxycyclohexyl)ethyltrimethoxysilane, γ-
(8,4-Eboxycyclohegycyl)ethyltriethoxysilane, γ-methacryloxyglobyltrimethoxysilane, r-methacryloxymethyldimethyldimethoxysilane, γ-mercaptogropyltrimethoxysilane, phenyltriacetoxysilane, β- Cyanoethyltriethoxysilane, tetramethoxysilane, tetraethoxysilane, tetrapropoxysilane, tetrabutoxysilane, methyltrimethoxysilane, methyltriethoxysilane, methyltripropoxysilane, methyltributoxysilane, ethyltrimethoxysilane, ethyltriethoxysilane , dimethyldimethoxysilane, dimethyldimethoxysilane, phenylmethyljethoxysilane, etc.

These silicon compounds are prepared by a well-known method, for example, in a mixed solvent of water and alcohol in the presence of an acid. ) When the compound of component C is used without being hydrolyzed, the abrasion resistance and adhesion to the lens surface are insufficient. Furthermore, when two or more silicon compounds are used after being hydrolyzed, better results are often obtained by mixing them and simultaneously hydrolyzing them, rather than by hydrolyzing them separately and then mixing them.

In addition, hydroxyl groups generated by hydrolysis exist in a partially knitted form, but this does not affect the effects of the present invention.

The polyfunctional epoxy compound of component C is an essential component for dyeability. Coating compositions A and B.

The ratio of C and D greatly affects stainability and abrasion resistance. In particular, when the ratio of the C component is high, the dyeability increases and the abrasion resistance deteriorates. Conversely, when the ratio of the C component is small, the dyeability decreases and the abrasion resistance increases. This ratio needs to be selected depending on the application. As a specific example of C component,
(Poly)ethylene glycol, (poly]propylene glycol.

Examples include di- or triglycidyl ethers of trifunctional alcohols such as catechol, resorcinol, and alkylene glycol. Component C is effective not only in dyeability but also in flexibility (ITIFJI impact resistance) and chemical resistance.

As the curing catalyst of component E, an epoxy curing catalyst and a polymerization catalyst of a heterogeneous monomer are used. Specific examples include alkali metal salts of carboxylic acids such as sodium acetate, alkali metal salts of carboxylic acids (7) such as sodium acetate, amine carboxylates such as ethanolamine acetate, and quaternary salts such as tetramethylammonium acetate. Polymerization catalysts such as grade ammonium carboxylates and triethylamine, glycine, pyridine, alkali hydroxides, Lewis acids or Bronsted acids such as tin (n), (IV) chloride, aluminum chloride and boron trifluoride,
Aluminum chelate compounds, other metal chelate compounds, perchloric oxides such as ammonium perchlorate and magnesium perchlorate, dicarboxylic anhydrides such as maleic anhydride, phthalic anhydride, hexahydrophthalic anhydride, and dodecenylsuccinic anhydride. It is effective when used.

Furthermore, compounds such as metal chelate compounds and perchloric acid compounds not only serve as curing catalysts, but also have the function of suppressing the condensation of silanol groups at room temperature, so they are particularly useful for compositions with short liquid lifespans. It is.

It is possible to add various types of retention agents, surfactants, chirotroping agents, ultraviolet absorbers, antioxidants, and various polymers for the purpose of improving coating work and imparting necessary properties as a paint. As the solvent or diluent, various solvents such as alcohols, ketones, esters, selonlube, halogenated hydrocarbons, carboxylic acids, and aromatic compounds can be used, and one or more of these can be used as a mixed solvent. It is also possible.

The coating composition of the present invention can be applied to a synthetic lens by any of the well-known methods such as a dipping method, a spray method, a spin coating method, and a flow coating method.

The synthetic resin lens coated in this manner is heated and placed into a plasticized thigh. Conditions such as heating temperature and heating time are determined depending on the characteristics of the resin, but usually 6.
Temperatures from 0 to 150°C are applied.

The obtained cured film has a thickness of 1μ to 50μ, preferably 5μ to 5μ
μ. If it is less than 5μ, it will not be possible to obtain satisfactory abrasion resistance because it will be easily affected by the lens fabric.
When the addition value is greater than μ, there is no problem of cracks occurring in the coating film, but liquid drips are more likely to occur in terms of appearance. However, when performing multilayer coatings,
It is also possible to increase the film thickness without this problem. In order to improve the adhesion of the interface between the synthetic resin lens and the coating film, various types of primers are treated with activated gas and acid. It is useful in the present invention to pre-treat the lens surface with chemical treatment such as alkali treatment.

In the present invention, an antireflection film is provided on the coating film thus obtained.

In order to take advantage of the characteristics of the coating described above, we also added a coating to further reduce reflection on the lens surface.
On top of the film, a single or multilayer antireflection layer consisting of a transparent inorganic dielectric layer such as metal oxide, metal nitride, metal oxynitride, metal carbide, metal fluoride, etc. was provided. In the above-mentioned coating film, when the A, C, and D components are low, the inorganic component is high, and the anti-reflection film thereon has the advantage of being good without the need for a conventional inorganic hard coat layer. be. In order to improve the abrasion resistance of conventional inorganic hard coat layers, the film thickness must be increased, and when the thickness is increased, there are problems with heat resistance, hot water resistance, impact resistance, etc. Since the coating film of the present invention is a mixture of an organic substance and an inorganic substance, the organic substance plays a role in improving the adhesion with the lens base material, and the inorganic substance plays a role in improving the adhesion with the antireflection film. Therefore, the anti-reflective coating can be thin, heat resistant, and resistant to hot water.
The drawback of poor impact resistance etc. has been improved.

Furthermore, the improved adhesion between the coating and the antireflection film simultaneously solves problems such as scratch resistance and cracks that occur during sanding. In the present invention, by selecting the antireflection film material on the coating film according to the components of the coating film,
An antireflection film with good adhesion can be obtained.

The anti-reflection film is formed by a vacuum deposition method, a sputtering method, an ion blating method, etc. 3), sho, 5io2e
5i8N4, Ts02, ZrO2, AA20
3, MgF2, Cr,, yb, o.

, Ta205, etc. can be obtained by laminating single or multilayer thin films. Furthermore, as a pretreatment for providing an antireflection film, it is desirable to lower the contact angle of the coating film, and 02. Plasma treatment using Ar or the like and various types of cleaning are effective.

The coating composition thus obtained is applied to the lens surface made of a transparent resin such as polycarbonate resin, acrylic resin, CR-39 resin, polystyrene resin, etc., and is applied to the lens surface to improve surface hardness, abrasion resistance, durability, hot water resistance, Heat-resistant,
Stainability and chemical resistance.

Excellent surface properties such as impact resistance are obtained, and more.

A synthetic resin lens provided with an antireflection film can be obtained without impairing the above-mentioned performance.

Hereinafter, the present invention will be explained in more detail with reference to Examples, but the present invention is not limited thereto.

Note that parts in the examples indicate parts by weight.The evaluation method for the coat Rsy was as follows.

1. Abrasion resistance LF: Applying a load of 1 loss with +0000 nut wool, rubbing 1 (1 round and 1 face 1 m), and visually evaluating the degree of damage by dividing into the following step heights.

A: There is no damage at all in the 1CrnX3ci range.

B: One line from 1 to lf within the above box (a is added.

C: 10 to 100 loops are formed within the above tilI circle.

D: There are scratches from the turnips, but a smooth surface [m] remains.

E: No smooth surface i'i remains due to scratches on the surface.

2. Water resistance and chemical resistance: Surface condition was rated 9. after being exposed to water, alcohol, and kerosene for 48 hours. - Solid.

3. G resistance, IT detergent property 20. IN hydrochloric acid and 1φ Mama Lemon (manufactured by Lion Oil ←) aqueous solution for 12 hours to examine the surface condition.

4. Density, ￥if +A-: The adhesion between the cured layer and the lens or the antireflection film and the cured layer was determined by the cross-cut tape test method according to D-0202 from J.

That is, a knife is used to make cuts on the lens surface at 1 part intervals to form 100 squares of 1πi. Next, a cellophane adhesive tape (Nitto Kagaku FOE" Cellotape 1) was strongly pressed onto it, and after it was peeled off by pulling in the 900 direction from the surface, the remaining squares of the coat film were used as an index of adhesion.

5. Heat resistance: The state of the coated film was visually inspected after being stored in a hot air oven at 90°C for 3 hours.

6. Hot water resistance The condition of the coated film after being immersed in hot water at 280° C. for 3 hours was visually inspected for 1 p.

7. Impact resistance: A steel ball drop test was conducted based on FDA standards. That is, a ball of approximately 16.47 mm was allowed to fall naturally to the center of the lens from a height of 127 mm, causing the lens to crack. This test was repeated three times, and those with no abnormality in appearance were considered good. In addition, the center part of the lens used in this test had two strokes.

8. Dyeability with disperse dyes: Tetrasil Black B (
(manufactured by Ciba Geigy) 22 with 85℃ hot water 1! The liquid was dispersed in LHJ for 5 minutes, and the average light attenuation rate in the visible range was recorded.

Skin Weather resistance: Using a xenon long life fade meter (manufactured by Suga Test Instruments Co., Ltd.), the surface condition was examined after being exposed to heat for 500 hours.

10. Durability: After completion of test method 9, the lenses were tested according to test methods 1 to 7, and the results were taken as the results of the durability test.

Example 1 (1) Preparation and coating of paint γ-Glycidoxyglopyltrimethoxine Lan 150
s, ethanol-dispersed colloidal silica (Catalysts & Chemicals Industry eAIJ! ” 08CAL 1232 ”Solid heat insulation 1
13 (1%) 400 parts, 2-methoxyethanol 800
35 parts of 0.05N acetic acid was added dropwise at once to the solution consisting of 1 part, and the mixture was stirred at room temperature for an hour. In addition, 6s parts of 2,2-bisC4'-(1''-oxacyclopentane-71-spiro-8'', 11'-thioxacyclobenkune-9'-methylogish[phenyl]propane), a flow control agent (Nippon Unicar Co., Ltd. "L 7001") 0.
8 parts were added and the mixture was further stirred for 1 hour. As a curing catalyst,
2 parts by weight of magnesium perchlorate, 1 part by weight of maleic anhydride (+
1 part by weight was added and stirred for 2 hours to prepare a coating liquid.This coating liquid was
Pulling speed 30t7n using immersion method on R-39 lens
/min (liquid temperature: 5° C.), and heated and dried in a hot air dryer at 70° C. for 1 hour and then at 110° C. for 2 hours. The thickness of the film was 8 μm.

(2) Formation of anti-reflection film As an anti-reflection film on the coating film obtained in Example 1-(1), SiO2 gold optical film thickness nd = λ/4°C
r f 71tl = 0.01λ, JvA step vacuum evaporation was performed, and ion blating was performed thereon in y+gy2nd-λ/4l argon plasma. The membrane configuration is shown in Figure 1.

The test results of the obtained lenses are shown in Table 1.

Example 2 (1) Paint made by HHH, ) and painted 70 parts of γ-glycidoxyprobyltrimethoxysilane,
Isopropyl alcohol-dispersed colloidal silica (Catalyst Chemical Industry ■10SCAL 1482 'Solid concentration 30%
) and 500 parts of norbutanol were stirred, and 16 parts of 0.05N were added dropwise at room temperature over 1 hour. After further stirring for 1 hour, 60 parts of glycerin diglycidyl ether (1 denacol EX318' manufactured by Nagase Sangyo Co., Ltd.) and bis-C4-(1') were added.

51-Shioxacyclohexane-6 Hinu Pillow 7+J1
1'-dioxacyclohexane-91-methyloxy)
180 parts of phenyl]methane was stirred for 30 minutes.

To this solution, 0.5 part of a flow control agent (manufactured by Nippon Unicar Co., Ltd. "L 7604') and mL of cured water.
t, "U 3 parts of stannic chloride, 2 parts of hexahydrophthalic anhydride
10 parts were added and stirred at room temperature for 30 minutes to prepare a coating liquid. This coating liquid was applied to a polycarbonate sunglass by a dipping method at a pulling rate of 40 cm/min (liquid temperature: 5°C), and cured by heating in a hot air dryer at 90°C for 3 hours. The thickness of the obtained film was 18 μm.

(2) Formation of anti-reflection film As an anti-reflection film on the coating film obtained in Example 2-1, Yb2O3 was coated with an optical thickness nd-λ/4r T
G206 nd-λ/2, S? :02 as nd=λ
/4 An antireflection film was formed by coating by sequential vacuum deposition. The membrane configuration is shown in Figure 2. Table 1 shows the test results of the obtained lenses.
As shown in [7].

Example 8 (1) Preparation and coating of paint γ-glycidoxypropylmethyldimethoxysilane 80
part, isopropyl alcohol-dispersed colloidal silica 24
12 parts of 0.05N hydrochloric acid was added at once to a solution consisting of 0 parts of dioxane and 250 parts of dioxane, and the mixture was stirred at 1°C for 8 hours. To this solution, 70 parts of glycerin triglycidyl ether ('EX814'' manufactured by Nagase Sangyo Co., Ltd.), 1.4-diethyl-
40 parts of 8,5,8-)dioxabicyclo(2,2,2)-octane.

Flow control agent (IL 76 manufactured by Nippon Unicar Co., Ltd.)
02'), 0.5 part of ammonium perchlorate as a curing catalyst, and 5 parts of phthalic anhydride were added, and 1
The mixture was stirred for a period of time to form a coating solution. This coating liquid was applied to a CR-39 lens using the immersion method at a speed of 40 cm/? Apply with Lumin (liquid temperature 5℃) and dry in a hot air dryer at 60℃ for 1 hour at 80℃.
Heat drying was performed at 120° C. for 1 hour and at 120° C. for 1 hour.

The thickness of the coating was 5 μm.

(2) Formation of anti-reflection film Example 8 - As an anti-reflection film on the coating film obtained in (1), AAzO3 was applied with an optical film thickness of −d=λ/4,
After performing ion blating in argon plasma, zr○2 is nd-λ/2 g C? 'nd =
0.01λ was vacuum-deposited, and M gF 2 was deposited on top of it.
Ion blating was performed in argon plasma at d = 0.01λ. The membrane configuration is shown in Figure 3. The test results obtained are shown in Table 1.

〔effect〕

As described above, in the present invention, by using a compound that is less likely to increase weight loss in Bartcoffi5, it is possible to increase the thickness of the film. This provides excellent abrasion resistance, heat resistance, hot water resistance, and impact resistance, as well as adhesion and
It was possible to provide a synthetic resin lens with excellent chemical resistance, weather resistance, durability, and stainability.

[Brief explanation of drawings]

FIG. 1 shows the membrane structure of Example 1, and 10 is CR-39.
lens, 11 is a coating film, 12 is SiO2,
13u Cr, 14 indicates MgF2f. FIG. 2 shows the 111Δ configuration of Example 2, where 21 is a polycarbonate glass and 21 is a coating G.
N% 22U Yb20s+Z3i'l Ta205
r 24it, B102fz shown. Fig. 3 shows the cross section of Embodiment 3, and 30 is CR-39.
lens, 31 is coating film, 32 is AA203
．． 33 is zro2134 is Cr, 35 is MgB'2
shows. Applicant Suwa I Co., Ltd. Kosha Agent Patent Attorney Rank 3rd Grade

Claims (1)

[Claims] (1) A coating composition containing the following A, B, C, D and E as main components is coated and cured on the lens surface,
A synthetic resin lens characterized by having a single-layer or multi-layer anti-reflection coating. A, one or more monomers whose general formulas are represented by the following (1), (II) and [■]. (II) In the formula C, R''-, R! are hydrocarbon groups (Cx-Cl2)y
and also R7 is -o-, -s-, -8O2-, -CH
,-. Gen, hydrocarbon group (01-C6), α, and b each independently represent an integer of 0-4. ]Ha in formula 1. 14 represents either a hydrocarbon group (Ox-Ca)t aryl group. ) 30 Colloidal silica C1 with a particle size of 1 to 100 mμ One or two silica compounds having the general formula (IV)
Hydrolyzate or partial condensate of more than one species. Rs-Az-(OR”)4-8-6' (III) Had an organic compound containing at least one selected from vinyl, amino, imino, ebony 7, (meth)acryloxy, quenyl, alkylthiol, and thiol group Base R@
is hydrogen, a hydrocarbon group (C1-C6) and a halogenated hydrocarbon group (cl-Cg); sRIO is a hydrocarbon group (C1-Cg);
05) p-alkoxyalkyl group (CI-05) and acyl group (C1-C4). α is 0, 1 or 2. b is 0, 1 or 2, and α
+b≦2) D, polyfunctional epoxy compound E, curing catalyst