JPH09157336A - Resin composition, substrate impregnating material and coating material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a resin compsn. which has a surface drying property, a cold setting property, and excellent impregnation into various substrates having interconnecting cells and can impact a low odorant property by incorporating an unsatd. polyester (A) using dicyclopentadiene(DCPD) and/or a DCPD compd., an ethylenically unsatd. monomer (B) having one (meth)acryloyl group, and an ethylenically unsatd. monomer (C) contg. at least two, per molecule, (meth) acryloyl groups having a polymerizable double bond. SOLUTION: The wt. ratio of the component (A) to [(component (B) +component (C)] is (5 to 50):(50 to 90), and the wt. ratio of the component (B) to the component (C) is (40 to 97):(3 to 60). The component (B) may also be the one which has a mol.wt. of a (meth)acryloyl of not less than 160 and is less likely to emit an odor. The component (B) is, e.g. methyl acrylate. Examples of compounds which are less likely to emit an odor include 2-ethylhexyl acrylate. The component (C) is, e.g. ethylene glycol di(meth)acrylate.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a paint having excellent adhesiveness, room temperature curing property, surface drying property and impregnating property, floor and wall coating, primer, wood impregnating material, concrete structure impregnating injection material, lining material, etc. The present invention relates to a radical curable resin composition, a base material impregnating material and a coating material suitable for a wide range of applications.

[0002]

2. Description of the Related Art Conventionally, various construction methods have been adopted for the purpose of impregnating a base material such as concrete or wood with a liquid resin to improve various functions of those structures. A typical example is a method called primer application. When coating floors and wall surfaces of concrete structures and lining materials, a very low viscosity resin coating called a primer is used for the purpose of shielding alkali from the base concrete and improving adhesion with the top coating resin coating. Apply. As the resin used for the primer, a one-component moisture-curable polyurethane resin, an epoxy resin, or the like is used, and the former is particularly typical. All of these existing resins have high viscosities, and are used in the form of being dissolved in a large amount of solvent in order to reduce the viscosity and improve the impregnating property of the underlying concrete.

In recent years, due to environmental problems, there has been a social movement in which resins that volatilize these solvents are not used as much as possible. Especially, when the coating is applied in a closed place indoors, the volatilized solvent stays indoors and remarkably deteriorates the working environment. In addition, even in outdoor work, basically, all the solvent in the resin is volatilized to form a normal coating film, so a large amount of solvent is scattered in the air. For example, in the case of a general-purpose primer, the solvent content is 60 to 80% by weight in the total amount.
That is, if 1 ton is used, 0.6 to 0.8 ton of solvent will be scattered in the air, which is a problem from the viewpoint of global environment protection and waste of resources.

Further, in the case of a solvent-type primer, the volatilization characteristics of the solvent are determined by the environmental temperature, so that in the summer it is fast, but in the winter it is slow to volatilize and it takes a longer time than overnight to move to the next step. Since the volatilization is slow, when the primer coating film in which the solvent remains is moved to the next step and the overcoat resin is applied, it causes swelling and peeling defects.

In the case of the one-component moisture-curable polyurethane resin, which is a typical primer, the curing time depends greatly on the season because the curing mechanism depends on the moisture in the air. The hot and humid summer is fast, and the cold and humid winter is slow. Solvents are less likely to volatilize in winter, so problems tend to occur. On the contrary, the summer time is too fast, and the NCO group of the polyurethane resin and H ₂ 0
The reaction of the group ends in a short time. Therefore, the NCO group of the polar group that improves the adhesiveness with the overcoat resin disappears, causing defects such as peeling.

As an example of improving the above problem, Japanese Patent Publication No.
Japanese Patent No. 4-10024 proposes a low-temperature fast-curing primer composition composed of an epoxy acrylate resin, MMA, WAX, and a tertiary amine. This composition is cured with a peroxide such as BPO to obtain a coating film.
Since the MMA monomer is basically cured by reaction, some of the MMA monomer evaporates during the time until curing, but the amount thereof is extremely smaller than that of the solvent type primer. Moreover, since it cures quickly even at low temperatures and the polar groups do not disappear, there is an advantage that the time interval until the next step can be freely selected.

[0007] However, as a drawback, since the amount of the monomer is larger than that of the polymer and the viscosity is as high as about 3 poise, it is difficult to impregnate concrete as a base and the adhesive strength with the base is low. Further, thin coating is also difficult, and if a thin film is used, it will be difficult to cure due to inhibition of oxygen curing. Further, since 1% or more of paraffin WAX is added as an oxygen curing inhibition inhibitor, WAX floating on the surface of the coating film serves as a release agent and reduces the adhesiveness with the overcoat material.

[0008]

The object of the present invention is to impregnate various base materials with a low viscosity for the purpose of improving the adhesiveness with the base material and suppressing the influence of the base material on the overcoat surface. It is to find a resin that has excellent properties and is not easily affected by oxygen curing inhibition even if paraffin WAX is not added. That is, even in a thin film, it is in a resin composition having excellent surface dryness, and has excellent curability, has a short curing time and is excellent in room temperature curability, and further has a radical curability that is sufficiently cured even when contacted with air and has excellent surface dryness. It is intended to provide a low-viscosity resin composition, a civil engineering building material, and a coating material.

[0009]

Means for Solving the Problems The present inventors have made intensive studies on these problems and as a result have completed the present invention.

That is, the present invention relates to (A) an unsaturated polyester using a dicyclopentadiene (abbreviated as DCPD) and / or a DCPD compound, and (B) an ethylenically unsaturated monoester having one (meth) acryloyl group. Monomer (C) ethylenically unsaturated monomer having at least two (meth) acryloyl groups in one molecule, the above (A), (B), (C)
A resin composition comprising a component, preferably a weight ratio of (A) component / <(B) component + (C) component> is from 5 to 50/50 to 95 (wt%), )component/
The component (C) is 40 to 97/3 to 60 (% by weight), and preferably the component (B) has a (meth) acryloyl group having a molecular weight of 160 or more in order to obtain a resin composition having less odor. The present invention relates to a base material impregnating material or a coating material, which contains an ethylenically unsaturated monomer and contains these resin compositions as main components.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION DC as the component (A) of the present invention
As the unsaturated polyester using a PD and / or DCPD compound, a known and commonly used synthetic production method is used.
For example, in JP-B-55-39243, an ester oligomer obtained by reacting DCPD (dicyclopentadiene) or hydroxydicyclopentadiene with a monobasic acid and a polyhydric alcohol is polymerized with an unsaturated polyester or an unsaturated epoxy ester. A resin composition comprising a polymerizable monomer. Further, in Japanese Patent Laid-Open No. 58-108218,
In the examples, there is shown a method in which dicyclopentadiene and maleic anhydride are subjected to a dropwise reaction with water and further reacted with glycol to obtain an unsaturated polyester. In any case, as the unsaturated polyester using the DCPD and / or the DCPD-based compound as the component (A) of the present invention, it is an essential condition that DCPD is present in the resin as a component,
The synthesis method does not matter.

Unsaturated polyesters containing no DCPD compound have poor surface dryness, and in particular, the thinner the film, the poorer the curability. Conversely, DCPD-based unsaturated polyesters have a better curability as they become thinner due to the effect of air oxidation curing,
It is a very preferable property as a low-viscosity paint such as a primer. Further, it is sufficiently cured without adding a metal salt such as cobalt as a dryer.

The ethylenically unsaturated monomer having one (meth) acryloyl group of the component (B) of the present invention is
(A) Unsaturated polyester using the DCPD and / or DCPD-based compound, or ethylenically unsaturated monoester having at least two polymerizable double bonds or (meth) acryloyl groups in one molecule of the component (C) Examples thereof include unsaturated monomers or unsaturated oligomers capable of undergoing a crosslinking reaction with a monomer, preferably monomers or oligomers having one acryloyl group, and (meth) acrylic acid ester monomers are particularly preferable. This is because when a monomer having no acryloyl group is used and its amount becomes large, the copolymerizability with the components (A) and (C) becomes poor and the curing time becomes long.

Specific examples of the ethylenically unsaturated monomer (B) having one (meth) acryloyl group are, for example, methyl acrylate, ethyl acrylate, n-butyl acrylate, isobutyl acrylate and acryl. T-Butyl acid, 2-ethylhexyl acrylate, n-acrylic acid
Octyl, decyl acrylate, 2-hydroxyethyl acrylate, 2-hydroxypropyl acrylate, β-ethoxyethyl acrylate, 2-cyanoethyl acrylate, cyclohexyl acrylate, diethylaminoethyl acrylate, methyl methacrylate, methacrylic acid Ethyl, butyl methacrylate, hexyl methacrylate, decyl methacrylate, lauryl methacrylate,
Stearyl methacrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl methacrylate, phenyl carbitol acrylate, nonyl phenyl carbitol acrylate, noniphenoxy propyl acrylate, polycaprolactone acrylate, acryloyloxyethyl phthalate, acryloyloxy succinate. Etc .; To improve the surface dryness of the resin cured product, for example, acrylic derivatives of dicyclopentanediene, silicyclodecane, and triazine, dicyclopentenyl acrylate, dicyclopentenyloxyethyl acrylate, tricyclodecanyl acrylate, and tricyclodecanyl acrylate. Cyclodecanyl methacrylate, tris (2-hydroxyethyl) isocyanuric acrylate, glycidyl methacrylate, etc. are also mentioned. It is.

Further, in the case of reducing the volatilization of the monomer and the emission of odor from the resin composition, the ethylenically unsaturated monomer as the component (B) is an ethylenic unsaturated monomer having a (meth) acryloyl group having a molecular weight of 160 or more. It is preferably an unsaturated monomer. That is, in the case of a monomer having a molecular weight of less than 160, the vapor pressure is low, so that the amount of the monomer is scattered and it becomes difficult to prevent odor.

Needless to say, for applications in which practically strict odor problems are not required, a monomer having a molecular weight of 160 or more and a monomer having a molecular weight of less than 160 may be used in combination.

The above-mentioned component (B) or the other ethylenically unsaturated monomer having a (meth) acryloyl group having a molecular weight of 160 or more and less emission of odor is a specific example of 2-ethylhexyl acrylate. , N-octyl acrylate, decyl acrylate, lauryl acrylate, stearyl acrylate, 2-hydroxyethyl acrylate, β-ethoxyethyl acrylate, 2-cyanoethyl acrylate, cyclohexyl acrylate, diethylaminoethyl acrylate, methacrylic Butyl acid, hexyl methacrylate, decyl methacrylate, lauryl methacrylate, stearyl methacrylate, phenyl carbitol acrylate, nonyl phenyl carbitol acrylate, nonyl phenoxy propyl acrylate, N-vinyl Pyrrolidone, polycaprolactone acrylate, acryloyloxyethyl phthalate, acryloyloxy succinate, phenol EO-modified (n
= 2-4) acrylate, nonylphenol EO-modified (n = 1-4) acrylate, nonylphenol PO-modified (n = 2.5) acrylate, 2-ethylhexylcarbitol acrylate, ω-carboxy-polycaprolactone (n = 2) mono Acrylate, monohydroxyethyl phthalate phthalate, and derivatives of dicyclopentanediene, silicylcyclodecane, and triazine that improve the surface dryness of the cured resin, such as dicyclopentenyl acrylate, dicyclopentenyloxyethyl acrylate, and tricyclodecanyl. Acrylate, tricyclodecanyl methacrylate, tris (2-hydroxyethyl) isocyanuric acrylate, etc. are mentioned.

The ethylenically unsaturated monomer (C) having at least two (meth) acryloyl groups in one molecule of the present invention means the abrasion resistance, scratch resistance and chemical resistance of the surface of the cured product. It is preferably used for the purpose of improving the like. The unsaturated monomer having at least two polymerizable double bonds in one molecule, that is, the polyfunctional unsaturated monomer is preferably
It is a polyfunctional (meth) acrylic acid ester monomer.
This monomer is, for example, ethylene glycol di (meth)
Alkanediol di- (meth) acrylates such as acrylates, 1,2-propylene glycol di (meth) acrylate, 1,3-butylene glycol di (meth) acrylate, 1,6-hexanediol di (meth) acrylate, di Propylene glycol di (meth)
Examples thereof include polyoxyalkylene-glycol di (meth) acrylates such as acrylate, triethylene glycol (meth) acrylate, tetraethylene glycol di (meth) acrylate, and polyethylene glycol (meth) acrylate.

Further, although the copolymerizability during the crosslinking reaction is slightly inferior, an ethylenically unsaturated monomer other than the above (B) and (C) may be used in combination. Specifically, allyl monomers such as styrene, vinyl acetate, vinyltoluene, α-methylstyrene, diallyl phthalate, diallyl isophthalate, triallyl isocyanurate, diallyl tetrabrom phthalate; acrylonitrile, n-methylol acrylamide-butyl ether, Hard monomers such as n-methylol acrylamide and acrylamide, N-vinyl pyrrolide, and the like. Divinylbenzene, diallyl phthalate, triallyl phthalate, triallyl cyanurate, triallyl isocyanurate, allyl (meth) acrylate, diallyl fumarate, etc. These may be used alone or in combination of two or more.

The composition of the present invention is characterized in that it is excellent in dryness only with the resin component, but paraffin and / or wax may be used in combination for the purpose of further improving the dryness.

Examples of the paraffin and / or wax used in the present invention include paraffin wax, polyethylene wax, and higher fatty acids such as stearic acid and 1,2-hydroxystearic acid. Paraffin wax is preferably used. This paraffin and / or wax is added for the purpose of improving the air blocking effect and stain resistance during the curing reaction on the surface of the coating film. The addition amount is 0.1 to 5 parts by weight, preferably 0.2 to 2 parts by weight, relative to 100 parts by weight of the components (A), (B) and (C).

The resin composition of the present invention also preferably contains a curing agent, and examples thereof include organic peroxides. Specifically, known ones such as diacyl peroxide type, peroxy ester type, hydroperoxide type, dialkyl peroxide type, ketone peroxide type, peroxyketal type, alkyl perester type and percarbonate type are used. , Kneading conditions, curing temperature, etc.

The addition amount is the amount usually used,
Preferably, it is 0.01 per 100 parts by weight of the resin composition.
~ 4 parts by weight. The above curing agents may be used in combination.

Further, a substance which has a function of decomposing the curing accelerator, that is, the organic peroxide of the curing agent by a redox reaction and facilitating the generation of active radicals is, for example, a metal such as cobalt type, vanadium type or manganese type. Soaps, third
Examples include secondary amines, quaternary ammonium salts, and mercaptans.

In the resin composition according to the present invention, a fiber reinforcing material, a filler, an aggregate, and a coloring agent such as a pigment or a dye may be used in addition to the above additives.

Fiber reinforcement may be used in the present invention. For example, glass fiber, amide, aramid, vinylon,
Organic fibers such as polyester and phenol, carbon fibers, metal fibers, ceramic fibers or a combination of these may be used. In consideration of workability and economy, glass fibers and organic fibers are preferable. Further, the form of the fiber includes a plain weave, a satin weave, a non-woven fabric, a mat-like form and the like.

As the filler, calcium carbonate powder, clay, alumina powder, silica powder, talc, barium sulfate, silica powder, glass powder, glass beads, mica, aluminum hydroxide, cellulose thread, silica sand, river sand, cold water stone, Known materials such as marble and crushed stone are mentioned. Among them, glass powder, aluminum hydroxide,
Calcium carbonate and the like are preferable.

The base material impregnating material which is the use of the fat composition of the present invention is, for example, a primer for various concrete structures and impregnating low viscosity paint, floor and wall coating material, floor material, road pavement material, asphalt pavement. Materials, coating materials, marking materials, injection materials, wood impregnation materials, ceramic impregnation materials,
It can be used as a metal impregnated material, a paper impregnated material, a primer in a field where odor is a problem, and various low odor paints. An impregnable coating material is preferred.

In the resin composition of the present invention, the DCPD (dicyclopentadiene) -based composition is less susceptible to oxygen curing inhibition, so that the thin film curability is difficult to obtain (meth) acryloyl group-containing ethylenically unsaturated monomer. The resin composition using is also excellent in curing and drying properties.

Further, since the DCPD type unsaturated polyester has a small molecular weight, the impregnation property into an object having voids is improved. Further, since the ethylenically unsaturated monomer having a (meth) acryloyl group is also monofunctional and polyfunctional, a strong film can be formed by a crosslinking reaction.

[0031]

EXAMPLES The present invention will be described in detail below with reference to Examples and Comparative Examples, where "parts" and "%" are by weight unless otherwise specified.

Synthesis Example 1 [Unsaturated polyester (UPE-
Preparation of 1)] In a four-necked flask equipped with a thermometer, a stirrer, an inert gas inlet, an air inlet, and a reflux condenser, 18.8 mol of DCPD (dicyclopentadiene), 10 mol of maleic anhydride, and torr. Charge hydroquinone 100ppm and add water 1
0 mol was added dropwise at a temperature of 115 to 130 ° C. over 60 minutes,
Then, 210 mol of diethylene glycol (5.5 mol) was charged.
It heat-condensed at ° C and obtained unsaturated polyester UPE-1.

Synthesis Example 2 [Unsaturated polyester (UPE-
Preparation of 2)] 2 mol of propylene glycol, 7.5 mol of diethylene glycol, 7 mol of maleic anhydride, 3 mol of phthalic anhydride and 4 mol of DCPD (dicyclopentadiene) were charged and condensed by heating at 210 ° C to obtain unsaturated polyester UPE-. Two
I got

Comparative Synthesis Example 1 [Unsaturated polyester (UP
Preparation of E-3)] 10 mol of maleic anhydride, 11 mol of diethylene glycol and 50 ppm of toluhydroquinone were heated and condensed at 200 to 220 ° C to synthesize an unsaturated polyester UPE-2.

Comparative Synthesis Example 2 [Preparation of Air-drying Unsaturated Polyester (UPE-4)] 2.0 moles of β-PMAA, 2.5 moles of fumaric acid, and 5.25 moles of diethylenedalicol were heated and dehydrated under known conditions for acid condensation. An air-drying imparting type unsaturated polyester having a valence of 18 was obtained.

Comparative Synthesis Example 3 [Preparation of One-Liquid Moisture-Cure Urethane Primer (UR-1)] "Hyprox-2000" having a molecular weight of 2000 and an OH value of 56 (Dainippon Ink and Chemicals, Inc. bifunctional poly Ether polyol) 1000 g, 1,3-butylene glycol 60 g, TMP 30 g, crude MDI 2713
xylene was added so that g and the resin content would be 40%, and the mixture was stirred and mixed at 50 ° C. for 3 hours to obtain a one-pack moisture-curable urethane primer UR-1 having an NCO% of 9.6 and a viscosity of 32 cps.

Comparative Synthesis Example 4 [Preparation of epoxy acrylate type primer (EP-1)] Unsaturated β-hydroxy obtained by reacting bis A type epoxy resin having a molecular weight of 1600 and an epoxide equivalent of 925 with methacrylic acid and lauric acid. 65 parts ester, MM
A35 parts, paraffin wax having a melting point of 50 to 55 ° C.
Epoxy acrylate type primer EP-1 having 5 parts and 1 part of dimethyl-paratoluidine was obtained.

Examples 1 to 4 Comparative Examples 1 to 4 The resins obtained in the above Synthetic Examples 1 and 2 and Comparative Synthetic Examples 1 to 4 were blended as shown in Tables 1 to 3 and subjected to the above-mentioned test (curing characteristics). Test, surface dryness, normal state, water resistance, 180 degree adhesive peeling test after leaving the coating composition left to stand, blistering test, impregnation depth measurement test, and odor strength test), and the evaluation results are shown in the same table.

The abbreviations in the above tables are as follows. 2-EHA 2 ethylhexyl acrylate LMA lauryl methacrylate MMA methyl methacrylate n-BA n-butyl acrylate DEGDMA diethylene glycol dimethacrylate TEGDMA triethylene glycol dimethacrylate

[Test Method] <Curing characteristic measuring method> BPO paste (50%) 2PHR, dimethylparatoluidine (DMPTD) to 100PHR resin.
0.3PHR was sampled in a beaker and the time until gelation was measured in a 25 ° C constant temperature water bath.

<Surface dryness test method> In a thermostatic chamber at 10 ° C,
# 240 On a JIS sidewalk plate sanded with sandpaper (3
(00 × 300 × 60 mm), 100 g / m ² of test resin was applied. The sample was allowed to stand at the same temperature, and a finger touch test was performed on the surface dryness to evaluate and determine. Evaluation method is about 2 to 3 cm of absorbent cotton
^{Even when 3} was pressed against the coating film surface, the time until the absorbent cotton did not remain on the coating film surface due to adhesion was measured. The compounding composition is as follows.

[0042]

<Waterproof 180 ° Adhesion Peeling Test Measuring Method> 3 m
100 g / m ² of primer resin was applied to a slate plate of m, and allowed to stand at 23 ° C for 24 hours.
0% flexible MMA resin (manufactured by Dainippon Ink and Chemicals, Inc.
Deiobar HTP-502) is laminated and impregnated with a polyester non-woven fabric having a basis weight of 110 g / m ² and JISK6854
A 180 degree adhesive peel test was carried out in accordance with (standard test). After that, the test piece is immersed in normal temperature water for 3 months, and then the adhesion peeling test is carried out in the same manner as above.
The water resistance of the primer was evaluated.

<Adhesiveness evaluation test when coating time is changed> In order to evaluate the adhesion retention effect performance depending on the coating time of the primer, the curing condition (temperature after coating the primer and applying the overcoat resin in the next step) / Hr), which is problematic), and summer conditions (50 ° C./5 days). The exam is
Apply 100 g / m ² of primer resin to a 3 mm slate plate with the same composition as above. After curing and drying, elongation rate is about 20
0% flexible MMA resin (manufactured by Dainippon Ink and Chemicals, Inc.
Deiobar HTP-502) is laminated and impregnated with a polyester non-woven fabric having a basis weight of 110 g / m ² and JISK6854
A 180 degree adhesive peel test was carried out in accordance with the above.

<Evaluation test for confirming the effect of residual solvent content due to blister generation> On a JIS sidewalk plate (300X300X60 m) polished with # 240 sandpaper in a constant temperature room at 10 ° C.
m) coated with 100 g / m ² of primer test resin. After 3 hours, in a room at 23 ° C, a flexible MM with an elongation of about 200%
A resin (Dainippon Ink and Chemicals Co., Ltd., Diobar HTP)
-502) and No. 4 silica were mixed at a ratio of 1 to 3 (weight ratio), and a resin mortar having a thickness of 2 mm was poured and spread to be completely cured.
Next, irradiation with an infrared lamp (Iwasaki Electric, 300 V, 400 W) from 50 cm above the resin mortar layer (surface temperature 43 ° C.)
Then, the occurrence of blister was visually confirmed. If the solvent content in the primer remains, blisters are likely to occur.

<Substrate Impregnation Evaluation Test of Low Viscosity Resin># 2
40 JIS sandwalk sanded concrete concrete sidewalk board is coated and impregnated with 100 g / m ^{2 of} resin with red dye added and cured. After that, the cut cross section was observed with a microscope to measure the impregnation depth of the resin into the base material.

<Odor strength test measurement method> New Cosmos Electric Co., Ltd., tin oxide semiconductor type odor strength measuring device XP-32
9, the odor intensity of the monomer generated from the resin was measured by the method shown in FIG. Odor intensity is 0 to 2000 m
LCD digital display is displayed in the range up to v, and the smaller the number, the weaker the odor. If it is too strong, it will be over 2000 mv.

A resin sample (1 g) was placed in a petri dish having a depth of 6 mm and a diameter of 56 mm, placed in a 5-liter glass container for 1 minute, and the odor intensity was measured by the method shown in FIG. The measurement temperature is 23 ° C. The larger the number, the stronger the odor.

[0049]

[Table 1]

[0050]

[Table 2]

[0051]

[Table 3]

[0052]

INDUSTRIAL APPLICABILITY The present invention provides an unsaturated polyester using DCPD and / or its compound in order to improve the adhesiveness to a substrate without curing and drying at a low temperature even in a thin film and leaving no monomer content. A), a composition in which a monofunctional (meth) acryloyl group-containing ethylenically unsaturated monomer (B) and a polyfunctional (meth) acryloyl group-containing ethylenically unsaturated monomer (C) are used in combination. Further, in order to impart low odor, when an ethylenically unsaturated monomer having a (meth) acryloyl group having a molecular weight of 160 or more is used alone or a monofunctional (meth) acryloyl group-containing monomer smaller than 160 is used in combination. The monomer scattering is remarkably reduced, resulting in a low odor type resin composition.

Therefore, the resin composition of the present invention is excellent in surface dryness, curability at room temperature, impregnability into various base materials having open cells, and imparts low odor, so that it can be used in various applications. In particular, it can be used as a base material impregnating material, a covering material in the field of civil engineering and building materials, for example, a civil engineering and building material such as a paint, a floor and wall coating material, a flooring material, a primer, an injecting material.

[0054]

[Brief description of the drawings]

FIG. 1 shows a diagram of a measuring device for an odor strength test.

[Explanation of symbols]

 1 ... Measuring machine 2 ... Sample

Claims (5)

[Claims] 1. (A) Dicyclopentadiene (DCPD
And / or an unsaturated polyester using the compound, (B) an ethylenically unsaturated monomer having one (meth) acryloyl group, and (C) at least two polymerizable double groups in one molecule. An ethylenically unsaturated monomer having a (meth) acryloyl group having a bond, the above (A), (B),
A resin composition comprising the component (C). 2. The weight ratio of component (A) / <component (B) + component (C)> is 5 to 50/50 to 95 (wt%),
The resin composition according to claim 1, wherein the ratio of the component (B) / the component (C) is 40 to 97/3 to 60 (% by weight). 3. The resin composition according to claim 1, wherein the component (B) contains an ethylenically unsaturated monomer having one (meth) acryloyl group having a molecular weight of 160 or more. 4. A base material impregnating material comprising the resin composition according to claim 1 as a main component. 5. A coating material comprising the resin composition according to any one of claims 1 to 4 as a main component.