JPH0517545A - Resin composition and resin-inorganic material composition - Google Patents

Abstract

PURPOSE:To obtain a resin composition used in improvement of mechanical strength, containing an unsaturated ester, a dicyclopentenyloxyalkyl (meth) acrylate and a monomer formable of water-containing polymers. CONSTITUTION:The objective resin composition containing (A) an unsaturated ester obtained by reacting an epoxy resin with an unsaturated monobasic acid and/or unsaturated polybasic acid, (B) a compound expressed by the formula (R is H or methyl; R1 is 2-12C alkylene or 4-12C oxalkylene formed by binding plural >=2C alkylene through O and (C) a monomer (especially preferably 2- hydroxyethyl methacrylate) capable of forming water-containing polymers.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a resin composition and a resin-inorganic material composition which improve the mechanical strength of a cured product.

[0002]

BACKGROUND OF THE INVENTION Epoxy (meth) acrylates obtained by reacting an epoxy resin with acrylic acid or methacrylic acid (the expression of (meth) acrylates indicates acrylates or methacrylates; Although it has been proposed to use it for concrete, it is said that this epoxy (meth) acrylate has insufficient curing characteristics and is sticky.

Therefore, as a solution to such a drawback, a resin composition comprising an unsaturated ester obtained by reacting an epoxy resin with an unsaturated monobasic acid and dicyclopentenyloxyalkyl (meth) acrylate is proposed. However, although this one has some features, it is not completely satisfactory. In particular, dissatisfaction remained in terms of mechanical strength of the cured product.

[0004]

DISCLOSURE OF THE INVENTION An object of the present invention is to provide a resin composition used for improving mechanical strength. Another object of the present invention is to provide a resin-inorganic material composition having excellent mechanical strength.

The object of the present invention is to provide (a) at least one unsaturated ester obtained by reacting an epoxy resin with at least one compound selected from the group consisting of unsaturated monobasic acids and unsaturated polybasic acids. , (B) the following general formula

[0006]

[Chemical 5]

(Wherein R represents a hydrogen atom or a methyl group, R ¹ represents an alkylene group having 2 to 12 carbon atoms or two or more alkylene groups having at least 2 carbon atoms through an oxygen atom). At least one compound represented by (oxaalkylene group having a total of 4 to 12 carbon atoms) bonded together, and (c) at least one monomer forming a hydropolymer. This is achieved by the resin composition.

Further, (a) at least one unsaturated ester obtained by reacting an epoxy resin with at least one compound selected from the group consisting of unsaturated monobasic acids and unsaturated polybasic acids; General formula of

[0009]

[Chemical 6]

(Wherein R represents a hydrogen atom or a methyl group, R ¹ represents an alkylene group having 2 to 12 carbon atoms or two or more alkylene groups having at least 2 carbon atoms through an oxygen atom). At least one compound represented by (oxaalkylene group having 4 to 12 carbon atoms as a whole bonded together), (c) at least one monomer forming a hydropolymer, and (d) inorganic This is achieved by a resin-inorganic material composition formed by using the material.

In the above invention, (a) + (b)
When + (c) is 100 parts by weight, the unsaturated ester of (a) is preferably 2 to 14 parts by weight, more preferably 5 to 14 parts by weight, and the compound of (b) is 3 to 56 parts by weight.
And more preferably 20 to 55 parts by weight, and 30 to 95 parts by weight of the monomer (c),
It is more preferably 30 to 75 parts by weight.

The monomer of (c) has the following general formula:

[0013]

[Chemical 7]

(Wherein R represents a hydrogen atom or a methyl group, and R ¹ is an alkylene group having 2 to 12 carbon atoms) is preferably a hydroxyalkyl (meth) acrylate. 2-hydroxyethyl methacrylate is particularly preferable. And, what is obtained by adding a desired amount of a curing agent to such a blending ratio,
It cures in a short time and gives a resin with extremely excellent properties. That is, when the above resin composition is applied, impregnated, and cured on an inorganic material such as asbestos slate or ceramics, it is possible to obtain a material having excellent mechanical strength.

The present invention will be described in more detail below. The resin composition of the present invention contains the above (a), (b) and (c), but the epoxy resin used as the raw material of the unsaturated ester of the component (a) is not particularly limited, For example, the general formula

[0016]

[Chemical 8]

(Wherein, x is an integer of 0 to 15) is used. Examples of compounds of this type include:
Epicoat 828, Epicoat 100 manufactured by Shell Chemical Company
1, Epicoat 1004, AER-6 manufactured by Asahi Kasei Corporation
64H, AER-331, AER-337, D.C. E. R. 330, D.I. E. R. 660,
D. E. There are R664 etc.

Further, a compound in which a part of hydrogen atoms of the above epoxy resin is replaced with halogen (for example, bromine) can also be used. Examples of this type of compound include Epotote YDB-400 and YDB-340 manufactured by Tohto Kasei Co., Ltd. and Sumiepoxy ESB-340, ESB-400 and ES manufactured by Sumitomo Chemical Co., Ltd.
B-500, ESB-700, DER made by Dow Chemical Company
-542, DER-511, DER-580, 1045, 1046, 1050, DX-248 manufactured by Yuka Shell Co., Ltd.
Etc.

Further, the general formula

[0020]

[Chemical 9]

(In the formula, R ₁ , R ₂ and R ₃ each independently represent a hydrogen atom or an alkyl group, and x is 0 to 1)
It is also possible to use those represented by (integer of 5). Examples of compounds of this type include D.I. E.
N. 431, D.I. E. N. 438, Shell Chemical Co., Ltd. Epicoat 152, Epicoat 154, Ciba EPN
1138 etc.

ERL42 made by Union Carbide
11, CY208, CY221, C manufactured by Ciba Geigy
Y350, XB2615, CY192, CY184 and the like are also used. These epoxy resins can be used alone or in combination of two or more kinds. Further, in order to improve workability, an epi-bis type epoxy resin, a phenol novolac type epoxy resin, a cresol novolac type epoxy resin or the like may be used in combination with a low viscosity epoxy resin.

Examples of the unsaturated monobasic acid to be reacted with epoxy resin, acrylic acid, methacrylic acid, crotonic acid, cinnamic acid, tricyclo [5.2.1.0 ^2.6] -4-decene 8 or 9 residues A partially esterified carboxylic acid containing an unsaturated dibasic acid residue as a constituent can be used. Examples of partially esterified carboxylic acids are 8- or 9-hydroxytricyclodecene-4- [5.2.1.
0 ^2.6 ] of 1.00 to 1.20 mol and 1 mol of an unsaturated dibasic acid such as maleic anhydride, itaconic acid, and citraconic acid are heated at 70 to 150 ° C. under an inert gas stream to obtain an inert gas. There is a saturated dibasic acid monoester.

Tricyclodecadiene-4,8- [5.
2.1.0 ^2.6 ] using an unsaturated dibasic acid monoester obtained by adding an unsaturated dibasic acid such as maleic acid, fumaric acid or itaconic acid in the presence of a catalyst such as sulfuric acid or Lewis acid. You can also An example of maleic acid is shown below.

[0025]

[Chemical 10]

Although unsaturated polybasic acids can be used,
In this case, it is preferable to use it together with an unsaturated monobasic acid. Examples of unsaturated polybasic acids include maleic acid, maleic anhydride, fumaric acid, itaconic acid, itaconic anhydride, citraconic acid, adipic acid, azelaic acid, phthalic acid, phthalic anhydride, isophthalic acid, terephthalic acid, and trimellitic anhydride. Acid etc. are mentioned. Then, it is preferable to use a dibasic acid having 12 or more carbon atoms, such as dodecanedioic acid,
SLB-12 manufactured by Okamura Oil Co., Ltd., ULB-2 manufactured by Okamura Oil Co., Ltd., which is a mixture of isomers of unsaturated dibasic acid having 16 carbon atoms.
SL-20 manufactured by Okamura Oil Co., Ltd., which is a mixture of 0 and C20 saturated dibasic acids, and dimerized fatty acid derived from tall oil fatty acid, which is commonly called dimer acid having 36 carbons, etc. . Commercially available products of dimer acid include Empol 1022, Empol 1024 (manufactured by Emery), Versadim 216, Versadim 288 (manufactured by Daiichi General Co., Ltd.), and Haridimer # 200 (manufactured by Harima Chemical Co., Ltd.).

The epoxy resin and the unsaturated monobasic acid are
60 ° C to 150 ° C, preferably 70 ° C to 130
The reaction is carried out at a temperature of ° C to give the unsaturated ester. When the unsaturated monobasic acid and the unsaturated polybasic acid are used in combination, the ratio of both is preferably such that the carboxyl groups of these acid components and the epoxy groups of the epoxy resin are approximately equivalent.

The formation of the unsaturated ester can be examined by quantifying the carboxyl group of the unsaturated monobasic acid or polybasic acid and examining the acid value. This acid value is preferably 50 or less, more preferably 15 or less. During the reaction, hydroquinone, parabenzoquinone, to prevent gelation due to polymerization,
It is preferable to use a polymerization inhibitor such as p-tert-butyl catechol and hydroquinone monomethyl ether.

In the esterification reaction, quaternary ammonium salts such as trimethylbenzylammonium chloride and pyridinium chloride, triethylamine,
The reaction time can be shortened by using a tertiary amine such as dimethylaniline or the like, and an esterification catalyst such as ferric chloride, lithium hydroxide, lithium chloride or stannic chloride. The resin composition of the present invention further contains the component (b) represented by the above general formula. Examples of this compound include dicyclopentenyloxyethyl acrylate, dicyclopentenyloxyethyl methacrylate, dicyclopentenyloxypropyl acrylate, dicyclopentenyloxypropyl methacrylate and the like.
These compounds are obtained by subjecting dicyclopentadiene to addition reaction with alkylene glycol or oxaalkylene glycol, and subjecting the produced alkylene glycol monodicyclopentenyl ether or oxaalkylene glycol monodicyclopentenyl ether to condensation reaction with methacrylic acid or methyl methacrylate. It can be produced by transesterification with It is also possible to replace the methacrylic acid or methyl methacrylate with acrylic acid or methyl acrylate. It can also be produced by addition reaction of alkylene glycol monoacrylate or alkylene glycol monomethacrylate with dicyclopentadiene.

The resin composition of the present invention further contains a monomer forming a hydrous polymer as the component (c). Examples of this type of compound include, for example, N-vinyl-2-piperidone, N-vinyl-2-pyrrolidone, N-vinyl-
2-caprolactam, N-vinyl-3-methyl-2-pyrrolidone, N-vinyl-3-methyl-2-piperidone,
N-vinyl-3-methyl-2-caprolactam, N-vinyl-4-methyl-2-pyrrolidone, N-vinyl-4-
Methyl-2-piperidone, N-vinyl-4-methyl-2
-Caprolactam, N-vinyl-5-methyl-2-pyrrolidone, N-vinyl-5-methyl-2-piperidone, N
-Vinyl-3-ethyl-2-pyrrolidone, N-vinyl-
4,5-Dimethyl-2-pyrrolidone, N-vinyl-5,
5-dimethyl-2-pyrrolidone, N-vinyl-3,5
5-trimethyl-2-pyrrolidone, N-vinyl-5-methyl-5-ethyl-2-pyrrolidone, N-vinyl-3,
4,5-Trimethyl-3-ethyl-2-pyrrolidone, N
-Vinyl-6-methyl-2-piperidone, N-vinyl-
6-ethyl-2-piperidone, N-vinyl-3,5-dimethyl-2-piperidone, N-vinyl-4,4-dimethyl-2-piperidone, N-vinyl-7-methyl-2-caprolactam, N- Vinyl-7-ethyl-2-caprolactam, N-vinyl-3,5-dimethyl-2-caprolactam, N-vinyl-4,6-dimethyl-2-caprolactam, N-vinyl-3,5,7-trimethyl- General formulas such as N-vinyllactam such as 2-caprolactam and 2-hydroxyethylmethacrylate

[0031]

[Chemical 11]

(Wherein R represents a hydrogen atom or a methyl group, and R ¹ is an alkylene group having 2 to 12 carbon atoms) is a hydroxyalkyl (meth) acrylate. Among them, hydroxyalkyl (meth) acrylate represented by the above general formula is preferable, and 2-hydroxyethyl methacrylate is particularly preferable.

Further, preferably 0.1 to 10% by weight based on the total of (a), (b) and (c) above,
More preferably 0.5 to 3% by weight of organic peroxide and /
Alternatively, preferably 0.01 to 10% by weight, more preferably 0.1 to 1% by weight of an aromatic amine accelerator and / or preferably 0.01 to 5% by weight of a polyvalent metal salt and / or complex. It is preferably added. That is, when it is used for concrete or the like, the radical curing is performed at each working temperature by using these additives. Particularly, at room temperature or a temperature close to it, when it is necessary to eliminate stickiness on the surface, a polyvalent metal salt and / or complex is used as an essential component, and an organic peroxide or an aromatic amine accelerator is further combined. It is preferable to use.

As the organic peroxide, benzoyl peroxide, cumene hydroperoxide, methyl ethyl ketone peroxide, acetylacetone peroxide, etc. can be used. As the aromatic amine accelerator, aniline, N, N-dimethylaniline, N, N-diethylaniline, toluidine, N, N-dimethyl-p-toluidine, N, N-di (hydroxyethyl) toluidine and the like are used. be able to.

The polyvalent metal salt and / or complex is generally called a desiccant (dryer), and metal salts of higher fatty acids are well known. For example, naphthenic acid, a polyvalent metal salt of octenoic acid, as the polyvalent metal, calcium, copper, zirconium, manganese, cobalt, lead, iron,
Examples include vanadium. As a particularly preferred example,
Examples thereof include cobalt octenoate and cobalt naphthenate. As an example of the complex, an acetylacetone complex is well known, and examples thereof include cobalt acetylacetonate and manganese acetylacetonate.

In addition to these, pigments, dyes, antioxidants, ultraviolet absorbers, flow control agents, thixotropic agents, plasticizers, waxes and the like can be added as required. When 100 parts by weight of an inorganic material such as concrete, asbestos slate, or ceramics, the resin composition having the above-mentioned composition is preferably added in an amount of 5 to 40 parts by weight by means of coating, mixing or impregnation. A resin-inorganic material composition having high mechanical strength can be obtained.

As the inorganic material, sand, silica powder, crushed rock such as crushed quartz, calcite, feldspar, basalt,
Stones, pebbles, calcined bauxite, aluminum silicate, magnesium silicate, mica, etc. are used. Hereinafter, the present invention will be described with reference to examples, but the present invention is not limited thereto.

[0038]

【Example】

[Synthesis of unsaturated ester (a)] Methacrylic acid 411
100 parts by weight, Epibis type epoxy resin Epicoat 828 (manufactured by Shell Co.) 453 parts by weight, Epicoat 1001 (manufactured by Shell Co.) 1136 parts by weight, hydroquinone 0.4 parts by weight and trimethylbenzylammonium chloride 4 parts by weight. It heated at 10 degreeC for 10 hours, and obtained the unsaturated ester (a) with an acid value of 15.

Example 1 [Unsaturated ester (a)]
Synthesis of], 14 parts by weight of the unsaturated ester (a), 56 parts by weight of dicyclopentenyloxyethyl methacrylate (manufactured by Hitachi Chemical Co., Ltd.), 30 parts by weight of 2-hydroxyethyl methacrylate (manufactured by Mitsubishi Rayon Co., Ltd.), 2 parts by weight of cobalt naphthenate (hardening accelerator, Dainippon Ink and Chemicals, Inc.) and cumene hydroperoxide (organic peroxide,
4 parts by weight of the resin composition at room temperature (25
C.) to carry out a curing reaction to obtain a cured casting plate.

Example 2 The unsaturated ester (a) 1
0 parts by weight, 40 parts by weight of dicyclopentenyloxyethyl methacrylate (manufactured by Hitachi Chemical Co., Ltd.), 50 parts by weight of 2-hydroxyethyl methacrylate (manufactured by Mitsubishi Rayon Co., Ltd.), cobalt naphthenate (curing accelerator, Dainippon Ink and Chemicals, Inc.) 2 parts by weight) and 4 parts by weight of cumene hydroperoxide (organic peroxide, manufactured by NOF CORPORATION) were cured at room temperature (25 ° C.) to obtain a cured casting plate.

Example 3 The unsaturated ester (a) 6
Parts by weight, dicyclopentenyloxyethyl methacrylate (manufactured by Hitachi Chemical Co., Ltd.) 24 parts by weight, 2-hydroxyethyl methacrylate (manufactured by Mitsubishi Rayon Co., Ltd.) 70 parts by weight, cobalt naphthenate (curing accelerator, Dainippon Ink and Chemicals, Inc.) 2 parts by weight) and 4 parts by weight of cumene hydroperoxide (organic peroxide, manufactured by NOF CORPORATION) were cured at room temperature (25 ° C.) to obtain a cured casting plate.

Example 4 The unsaturated ester (a) 2
Parts by weight, 8 parts by weight of dicyclopentenyloxyethyl methacrylate (manufactured by Hitachi Chemical Co., Ltd.), 90 parts by weight of 2-hydroxyethyl methacrylate (manufactured by Mitsubishi Rayon Co., Ltd.),
A resin composition containing 2 parts by weight of cobalt naphthenate (a curing accelerator, manufactured by Dainippon Ink and Chemicals, Inc.) and 4 parts by weight of cumene hydroperoxide (organic peroxide, manufactured by NOF CORPORATION) at room temperature (25 ° C). A curing reaction was performed to obtain a cured casting plate.

Example 5 A ceramic-made inorganic material plate (water absorption rate 10%, 160 mm × 40 mm × 4 mm) obtained by firing a raw material mainly containing clay, wollastonite, etc.
Immerse in the resin composition of Example 1 at 20 ° C., and
It was cured under the conditions of ℃ × 24 hours, 40 ℃ × 7 hours.

[Example 6] A ceramic inorganic material plate (water absorption rate 10%, 160 mm x 40 mm x 4 mm) obtained by firing a raw material containing clay, wollastonite, etc. as a main component,
Immerse in the resin composition of Example 2 at 20 ° C., and
It was cured under the conditions of ℃ × 24 hours, 40 ℃ × 7 hours.

Example 7 A ceramic-made inorganic material plate (water absorption rate 10%, 160 mm × 40 mm × 4 mm) obtained by firing a raw material mainly containing clay, wollastonite, etc.
Immerse in the resin composition of Example 3 at 20 ° C., and
It was cured under the conditions of ℃ × 24 hours, 40 ℃ × 7 hours.

Example 8 A ceramic-made inorganic material plate (water absorption rate 10%, 160 mm × 40 mm × 4 mm) obtained by firing a raw material containing clay, wollastonite, etc. as a main component,
Immerse in the resin composition of Example 4 at 20 ° C., and
It was cured under the conditions of ℃ × 24 hours, 40 ℃ × 7 hours.

Comparative Example 1 The unsaturated ester (a) 2
0 parts by weight, dicyclopentenyloxyethyl methacrylate (manufactured by Hitachi Chemical Co., Ltd.) 80 parts by weight, cobalt naphthenate (curing accelerator, Dainippon Ink and Chemicals, Inc.) 2 parts by weight, cumene hydroperoxide (organic peroxide) 4 parts by weight of the resin composition at room temperature (25 ° C)
The curing reaction was carried out to obtain a cured casting plate.

Comparative Example 2 50 parts by weight of dicyclopentenyloxyethyl methacrylate (manufactured by Hitachi Chemical Co., Ltd.) and 2
50 parts by weight of hydroxyethyl methacrylate (manufactured by Mitsubishi Rayon Co., Ltd.) and cobalt naphthenate (curing accelerator,
2 parts by weight of Dainippon Ink and Chemicals Inc. and 4 parts by weight of cumene hydroperoxide (organic peroxide, manufactured by NOF CORPORATION) at room temperature (25 ° C.) for curing reaction, and curing cast plate Got

Comparative Example 3 100 parts by weight of dicyclopentenyloxyethyl methacrylate (manufactured by Hitachi Chemical Co., Ltd.),
A resin composition containing 2 parts by weight of cobalt naphthenate (a curing accelerator, manufactured by Dainippon Ink and Chemicals, Inc.) and 4 parts by weight of cumene hydroperoxide (organic peroxide, manufactured by NOF CORPORATION) at room temperature (25 ° C). A curing reaction was performed to obtain a cured casting plate.

[Comparative Example 4] A ceramic-made inorganic material plate (water absorption rate 10%, 160 mm x 40 mm x 4 mm) obtained by firing a raw material containing clay, wollastonite, etc. as a main component,
Immerse in the resin composition of Comparative Example 1 at 20 ° C., and
It was cured under the conditions of ℃ × 24 hours, 40 ℃ × 7 hours.

[0051]

[Characteristics] The flexural strength, water absorption rate, glass transition temperature, thermal expansion coefficient, and resin composition characteristics of the cured casting plates obtained in Examples 1 to 4 and Comparative Examples 1 to 3 were examined. The characteristics are shown in Table 1 below. The evaluation method is as shown below. 1. Viscosity The viscosity of each resin composition at 23 ° C. was measured using a BL type viscometer. 2. Curing time 50 g of each resin composition is placed in a 100 ml polyethylene beaker, and a curing reaction is carried out by stirring with a glass rod in an atmosphere of 25 ° C. The glass rod was occasionally lifted in the vertical direction, and when the resin composition exhibited a cornered state, it was determined to be cured, and the time required to reach this was defined as the curing time. 3. Preparation method of casting plate In accordance with JIS K6911, a casting plate of each resin composition having dimensions of 100 × 100 × 3 mm was prepared. 4. Bending strength 3. Dimension 100 × 10 × 3m from the casting plate created in
The test piece for bending strength measurement of m was prepared, JIS K691
The bending strength was measured according to 1. 5. Water absorption rate 3. Dimension 30 x 80 x 3 mm from the casting plate created in
Create a test piece of 24 and put it in distilled water at 23 ° C for 24 hours.
Soak for hours. The weight change before and after the immersion was measured, and the water absorption rate was calculated from the following calculation.

Water absorption rate (%) = (weight after immersion−weight before immersion) / (weight after immersion) × 100 6. Glass transition temperature 2. 5 x 5 x 3 mm from casting plate created with bending strength
Was prepared and measured with a thermomechanical analyzer (thermal analyzer TMA manufactured by Seiko Instruments Inc.). 7. Thermal expansion coefficient 4. From the data measured at the glass transition temperature, 0-3
The coefficient of thermal expansion at 0 ° C. was obtained. 8. The dry weight is measured before the water vapor adsorption amount test, and the sample is placed in a desiccator having a relative humidity of 90% to absorb moisture for 23 hours, and the weight after moisture absorption is measured. After weighing, it is dried at 105 ° C. for 16 hours and cooled in a drying desiccator for 7 hours, and the weight is measured after cooling. The average moisture absorption weight was obtained in this manner and calculated by the following formula.

Water vapor adsorption amount (l / m ² ) = average moisture absorption weight (g) /18×22.4 (l) / total surface area of test piece (m ² ) Table-1 Flexural strength Water absorption coefficient Viscosity Curing time Glass transition Temperature coefficient of thermal expansion Kgf / cm ² % cps min ° C./° C. Example 1 708 0.3 47 40 63 2.4 Example 2 754 1.4 1.4 27 55 66 66 2.3 Example 3 760 4.9 14 88 71 2.4 Example 4 720 16.8 10 170 77 77 2.4 Comparative Example 1 617 0.1 132 20 57 2.6 Comparative Example 2 366 1.9 12 70 70 58 2.7 Comparative Example 3 96 0.1 20 60 38 3.7 The unit of the coefficient of thermal expansion is × 10 ^{−5 from} Table-1, the unsaturated ester of (a), the compound of (b),
And (c) the cured casting plate of the resin composition containing the monomer for forming the water-containing polymer, the mechanical strength is remarkably improved, the water absorption is high, and the resin composition has a low viscosity. I know there is.

Further, the resin composition of the present invention has a low volatility, for example, a low volatility as compared with, for example, methyl methacrylate, and therefore does not cause a deterioration in the working environment and lowers the working cost, as well as the pollution problem. Is unlikely to occur. Further, since the bending strength, the water absorption rate, the impregnation rate of the resin composition and the impregnation rate (impregnation depth) of the inorganic material plates obtained in Examples 5 to 8 and Comparative Example 4 were examined,
These properties are shown in Table 2 below. Table-2 Example 5 Example 6 Example 7 Example 8 Comparative Example 4 Impregnation rate (%) 8 9 10 10 4 Impregnation depth (10 minutes) 3.0 mm 4.2 mm 5.4 mm 7.0 mm 1.7 mm (20 minutes) 5.0 mm 6.0 mm 8.1 mm 10.5 mm- (30 minutes) -7.2 mm 9.9 mm 13.3 mm- (40 minutes) -8.2 mm 11.5 mm 15.8 mm-Bending strength (Kgf / cm ² ) 627 660 630 623 595 Water absorption% (1 day) 0.26-1.08 1.58 0.10 (7 days) 1.22 1.59 1.76 2.77 0.50 (28 days) 1 .50 1.93 2.97 4.40 0.70 Water vapor adsorption amount (l / m ² ) 0.5 1.0 3.9 7.4 0 According to Table 2 below, the present invention is Since the resin-inorganic material composition is remarkably improved in mechanical strength and has an excellent breathing action, it can be used as an exterior material or an interior material such as a wall. If you are using Te, and that condensation is less likely to occur.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Naoaki Koyanagi             2-1-1 Tsukimi-cho, Kumagaya-shi, Saitama Chichibu             Central Research Institute of Cement Co., Ltd. (72) Inventor Akira Asami             2-1-1 Tsukimi-cho, Kumagaya-shi, Saitama Chichibu             Central Research Institute of Cement Co., Ltd. (72) Inventor Fumio Tashiro             Hitachi Chemical, 5-1 Sunayama, Hasaki-machi, Kashima-gun, Ibaraki             Kashima Factory Development Department, Kogyo Co., Ltd. (72) Inventor Keiji Hamada             Hitachi Chemical, 5-1 Sunayama, Hasaki-machi, Kashima-gun, Ibaraki             Kashima Factory Development Department, Kogyo Co., Ltd. (72) Inventor Kanemasa Nomaguchi             Hitachi 1-1, Nishi-Shinjuku, Shinjuku-ku, Tokyo             Kasei Industry Co., Ltd.

Claims (7)

[Claims] 1. At least one unsaturated ester obtained by reacting (a) an epoxy resin with at least one compound selected from the group consisting of unsaturated monobasic acids and unsaturated polybasic acids, and (b) The general formula of (However, R represents a hydrogen atom or a methyl group, R ¹ is an alkylene group having 2 to 12 carbon atoms, or two or more alkylene groups having at least 2 carbon atoms are bonded via an oxygen atom. And a resin composition containing at least one compound represented by (oxaalkylene group having 4 to 12 carbon atoms as a whole), and (c) at least one monomer forming a water-containing polymer. . 2. The unsaturated ester of (a) is 2 to 14 parts by weight, the compound of (b) is 3 to 56 parts by weight, and the monomer of (c) is 30 to 95 parts by weight, and the total amount is 100 parts by weight. The resin composition according to claim 1, which is contained as follows. 3. The monomer of (c) has the following general formula: The resin according to claim 1 or 2, which is a hydroxyalkyl (meth) acrylate represented by the formula (wherein R represents a hydrogen atom or a methyl group, and R ¹ is an alkylene group having 2 to 12 carbon atoms). Composition. 4. (a) at least one unsaturated ester obtained by reacting an epoxy resin with at least one compound selected from the group consisting of unsaturated monobasic acids and unsaturated polybasic acids; The general formula of (However, R represents a hydrogen atom or a methyl group, R ¹ is an alkylene group having 2 to 12 carbon atoms, or two or more alkylene groups having at least 2 carbon atoms are bonded via an oxygen atom. And at least one of compounds represented by (oxaalkylene group having 4 to 12 carbon atoms as a whole), (c) at least one of monomers forming a hydropolymer, and (d) inorganic material And a resin-inorganic material composition. 5. The unsaturated ester of (a) is 2 to 14 parts by weight, the compound of (b) is 3 to 56 parts by weight, and the monomer of (c) is 30 to 95 parts by weight, and the total amount is 100 parts by weight. The resin-inorganic material composition according to claim 4, which is used as described above. 6. An unsaturated ester of (a), a compound of (b), and (c) per 100 parts by weight of the inorganic material of (d).
The resin-inorganic material composition according to claim 4, which is used in a total amount of 5 to 40 parts by weight with the monomer. 7. The monomer of (c) has the following general formula: The resin according to claim 4, wherein R is a hydrogen atom or a methyl group, and R ¹ is an alkylene group having 2 to 12 carbon atoms. -Inorganic material composition.