JP2020158629A - Resin composition, structure, and method for manufacturing structure - Google Patents

Abstract

To provide a resin composition, a structure, and a method for manufacturing a structure.SOLUTION: A resin composition is used for forming a coating layer for immobilizing an aggregate to at least a part of a surface of a structure, in which a TI value of the resin composition at 23°C determined by a measurement method according to JIS-K6833-1:2008 is 1.5 or more, and tensile elongation at break measured by the following measurement condition according to a measurement method according to JIS-K6911:1995 is 40% or more. (Measurement condition) A curing agent-containing rein composition is produced by adding 3 pts.mass of a curing agent to 100 pts.mass of the resin composition. A cured product is obtained by casting 6 kg/m2 of the curing agent-containing resin composition into a mold frame, and curing the curing agent-containing resin composition for 2 hours. A test piece obtained by molding a molding into a shape of a tensile test piece according to JIS-K6911:1995 is manufactured using a molding machine. After the test piece has been manufactured, tensile elongation at break is measured after 7 days after the curing agent-containing resin composition has been manufactured.SELECTED DRAWING: None

Description

The present invention relates to a resin composition, a structure, and a method for producing the structure.

Conventionally, unsaturated polyester resin, epoxy resin, polyurethane resin, vinyl ester resin, acrylic resin and the like have been used as a coating agent for forming a coating film on a base material such as a floor surface, a wall surface, and a road pavement surface. Has been done.
Although unsaturated polyester-based resins have excellent solvent resistance, they are inferior in weather resistance, have large shrinkage during curing, and have poor low-temperature workability.

Epoxy-based resins have excellent alkali resistance and adhesiveness to a base material, but are inferior in weather resistance, have a long curing time, and are inferior in curability at low temperatures.
Polyurethane-based resins are excellent in elasticity and flexibility, but inferior in chemical resistance and weather resistance.
Further, as the coating agent, a vinyl ester resin or an acrylic resin having excellent low temperature curability, weather resistance and chemical resistance is often used.

Various coating methods have been proposed for these materials as a coating agent for forming a coating film on a base material such as a floor surface, a wall surface, and a road pavement surface.
Among these materials, acrylic resins are often used as resins that can shorten the construction period because they have a high curing rate, an appropriate pot life, and excellent low-temperature curability.

For example, in Patent Documents 1, 3 and 4, a coating layer having a sufficient thickness can be formed by increasing the viscosity of the resin composition in consideration of coating on the inclined portion, and when used as a non-slip material, for example. In addition, the adhesion of aggregate is good.
Further, in Patent Document 2, a resin composition having a viscosity suitable for work is obtained by increasing the TI value (thixotropic index) so that the surface of the coating can be easily covered even with an inclined portion or the like.

JP-A-2008-207182 Japanese Unexamined Patent Publication No. 2012-241155 International Publication 2012/06624 Pamphlet Japanese Unexamined Patent Publication No. 2003-73454

In many cases, the base material such as the floor surface and the pavement surface of the road is generally provided with a slope. In particular, the pavement surface of the road has a structural slope such as a cross slope or a longitudinal slope, and the resin composition. There is a problem that it is difficult to form a coating layer having a sufficient thickness because an object flows.
In Patent Documents 1, 3 and 4, there is a problem that workability is inferior due to high resin viscosity.
Further, in Patent Document 2, since the performance as a primer of a thin layer is taken into consideration, the tensile strength is high but the tensile elongation at break is low. Therefore, for example, when a coating layer having a sufficient thickness is formed as a non-slip material so that the aggregate adheres well, stress is applied to the coating layer due to curing shrinkage of the coating layer, and the coating layer becomes There was a problem of cracking.

The present invention has been made in view of the above circumstances, and has good workability and can maintain a required thickness even on an inclined portion of a base material such as a floor surface or a pavement surface of a road, and further, for example, a non-slip material. A resin composition capable of forming a coating layer having excellent durability such as resistance to detachment of aggregates and peeling resistance, a structure having a layer formed from the resin composition, and the above. It is an object of the present invention to provide a method for manufacturing a structure.

The present invention includes the following [1] to [12].
[1] A resin composition used for forming a coating layer for immobilizing an aggregate on the surface of at least a part of a structure, which is determined by a measuring method specified in JIS-K6833-1: 2008. The TI value (thixotropic index) of the resin composition at 23 ° C. is 1.5 or more, and the tensile elongation at break measured under the following measurement conditions according to the measurement method specified in JIS-K6911: 1995 is 40% or more. Is a resin composition.
(Measurement condition)
To 100 parts by mass of the resin composition, 3 parts by mass of a curing agent (product name "Niper NS", manufactured by NOF CORPORATION, benzoyl peroxide purity 40%) (hereinafter abbreviated as "Niper NS") is added. To produce a curing agent-containing resin composition.
Immediately in an environment of 23 ° C. and 50% humidity, the curing agent-containing resin composition was poured into a mold in the shape of a tensile test piece described in JIS-K6911: 1995 at a weight of 6 kg / m ² and cured over 2 hours. , Manufacture plate-shaped tensile test pieces. The test piece is cured in an environment of 23 ° C. and 50% humidity, and the tensile elongation at break is measured 7 days after the hardener-containing resin composition is produced.
[2] The resin composition according to [1], wherein the viscosity measured by a Brookfield type viscometer BM type specified in JIS-Z8803: 2011 at 23 ° C. is 200 to 1,500 mPa · s.
[3] Under the measurement conditions specified in JIS-K6911: 1995, after the test piece is produced, it is cured in an environment of 23 ° C. and 50% humidity to produce a curing agent-containing resin composition. The resin composition according to [1] or [2], wherein the tensile elongation at break measured after 3 hours is 40% or more.
[4] Under the measurement conditions specified in JIS-K6911: 1995, after the test piece is produced, it is cured in an environment of 23 ° C. and 50% humidity to produce a curing agent-containing resin composition. The resin composition according to any one of [1] to [3], wherein the tensile strength measured 7 days after the measurement is 6 N / mm ² or more.
[5] Under the measurement conditions specified in JIS-K6911: 1995, after the test piece is produced, it is cured in an environment of 23 ° C. and 50% humidity to produce a curing agent-containing resin composition. The resin composition according to [4], wherein the tensile strength measured 3 hours after the test piece is 50% or more of the tensile strength measured 7 days after the production of the test piece.
[6] The resin composition according to any one of [1] to [5], which comprises a monomer (A) having a (meth) acryloyl group.
[7] A monomer (A) having a (meth) acryloyl group and at least one polymer (B) selected from an acrylic polymer and a polymer having a (meth) acryloyl group are included [1]. ] To [6]. The resin composition according to any one of.
[8] A structure including an aggregate layer, wherein the aggregate layer contains the resin composition according to any one of [1] to [7] and the aggregate.
[9] The structure according to [8], which has a protective layer on the surface of the aggregate layer.
[10] A curing agent-containing resin composition obtained by blending a curing agent with the resin composition according to any one of [1] to [7] is coated on the surface of at least a part of the structure to form a coating layer. A structure having an aggregate layer, comprising a step of placing the aggregate on the coating layer, and a step of curing the coating layer to form an aggregate layer to which the aggregate is fixed. Manufacturing method.
[11] The method for producing a structure according to [10], wherein the thickness of the coating layer before placing the aggregate is 1 mm or more and 5 mm or less.
[12] The method for producing a structure according to [10] or [11], wherein a protective layer is formed on the surface of the aggregate layer after the aggregate layer is formed.

According to the present invention, workability is good even on an inclined portion of a base material such as a floor surface or a pavement surface of a road, a required thickness can be maintained, and further, when used as a non-slip material, an aggregate can be used. Provided are a resin composition capable of forming a coating layer having excellent durability such as resistance to peeling and peeling resistance, a structure having a layer formed from the resin composition, and a method for producing the structure. Can be done.

The definitions of the following terms apply throughout the specification and claims.
"(Meta) acrylic" is a general term for acrylic and methacrylic.
"(Meta) acrylate" is a general term for acrylate and methacrylate.
"(Meta) acryloyl group" is a general term for acryloyl group and methacryloyl group, and the general formula CH ₂ = C (R) -C (= O)-[R represents a hydrogen atom or a methyl group. ] Is represented.
"~" Indicating a numerical range means that the numerical values described before and after the numerical range are included as the lower limit value and the upper limit value.

"Structure"
As the structure to which the present invention is applied, a structure formed of concrete or asphalt is preferable, and for example, a floor slab (road slab, bridge slab, high bridge slab, etc.), a building floor, etc. Can be mentioned. Further, a structure in which a pavement layer is formed on a floor slab, or a structure after the existing pavement layer or the existing waterproof layer is peeled off may be used as a substrate.
The shape of the substrate is not particularly limited, and examples thereof include a flat surface, a curved surface, an inclined surface, and an elevation surface.

Examples of the concrete include cement concrete, asphalt concrete, mortar concrete, resin concrete, permeable concrete, ALC (Autoclaved Lightweight aerated Concrete) board, PC (prestressed concrete) board and the like.
These may be one kind alone or a combination of two or more kinds. When the substrate is concrete, it may or may not contain reinforcing bars.

"Coating layer"
In the present embodiment, the coating layer is a layer composed of a resin composition to be coated on the surface of at least a part of the structure, and a primer may be coated before coating the coating layer.
In the present embodiment, the coating layer may be a layer coated with a resin composition in order to fix the aggregate on the surface of at least a part of the structure. In this case, after coating the resin composition of the present embodiment with a curing agent on the surface of at least a part of the structure and placing the aggregate on the coating layer before the resin composition is cured. , The coating layer may be cured to fix the aggregate.
When the aggregate is fixed, a protective layer may be provided on the upper layer on which the covering layer is further hardened and the aggregate is fixed. In this case, the aggregate is placed near the boundary between the covering layer and the protective layer. It may be contained.

<Resin composition>
The resin composition of the present embodiment is used for forming a coating layer for immobilizing an aggregate on the surface of at least a part of a structure.
The resin composition of the present embodiment has a TI value (thixotropic index) of 1.5 or more at 23 ° C. determined by the measuring method specified in IS-K6833-1: 2008.

The resin composition of the present embodiment has a tensile elongation at break of 40% or more measured under the following measurement conditions according to the measurement method specified in JIS-K6911: 1995.
(Measurement condition)
A curing agent-containing resin composition is produced by adding 3 parts by mass of Niper NS to 100 parts by mass of the resin composition.
Immediately in an environment of 23 ° C. and 50% humidity, the curing agent-containing resin composition was poured into a mold in the shape of a tensile test piece described in JIS-K6911: 1995 at a weight of 6 kg / m ² and cured over 2 hours. Manufacture plate-shaped tensile test pieces. The test piece is cured in an environment of 23 ° C. and 50% humidity, and the tensile elongation at break is measured 7 days after the hardener-containing resin composition is produced.

Further, the resin composition of the present embodiment preferably has a solution viscosity of 200 to 1,500 mPa · s measured by a Brookfield type viscometer specified in JIS-Z8803: 2011 at 23 ° C., preferably 300 to 1,000 mPa. -S is preferable. When the viscosity is 200 mPa · s or more, good workability can be obtained, and when it is 1,500 mPa · s or less, a good coating film that follows the unevenness of the base material can be obtained.

Further, the resin composition of the present embodiment is cured in an environment of 23 ° C. and 50% humidity after the production of the test piece under the measurement conditions according to the measurement method specified in JIS-K6911: 1995. The tensile elongation at break measured 3 hours after the hardener-containing resin composition is produced is preferably 40% or more. When the elongation is 40% or more, the peeling from the asphalt is reduced when the structure is asphalt.

Further, the resin composition of the present embodiment is cured in an environment of 23 ° C. and 50% humidity after the production of the test piece under the measurement conditions according to the measurement method specified in JIS-K6911: 1995. The tensile strength measured 7 days after the hardener-containing resin composition is produced is preferably 6 N / mm ² or more. When the tensile strength is 6 N / mm ² or more, peeling from the structure is reduced, and the grip property of the aggregate is improved when the aggregate is fixed in consideration of anti-slip property.

Further, the resin composition of the present embodiment is cured in an environment of 23 ° C. and 50% humidity after the production of the test piece under the measurement conditions according to the measurement method specified in JIS-K6911: 1995. It is preferable that the tensile strength measured 3 hours after the hardener-containing resin composition is produced is 50% or more of the tensile strength measured 7 days after the production.

The resin composition of the present embodiment preferably contains a monomer (A) having a (meth) acryloyl group.

<Polymer (A)>
The monomer (A) is a monomer having one (meth) acryloyl group. The monomer (A) is a component capable of adjusting the viscosity of the resin composition and adjusting the mechanical strength of the adhesive protective layer formed from the resin composition.

Examples of the monomer (A) include the following (a-1) to (a-11). Among these, it is selected from (a-3) and (a-6) in that the viscosity of the resin composition can be easily adjusted and the mechanical strength of the adhesive protective layer formed from the resin composition can be easily adjusted. At least one of these is preferred.

(A-1): A monomer having one (meth) acryloyl group and at least one carboxy group.
(A-2): A monomer having one (meth) acryloyl group and at least one hydroxyl group (excluding (a-1) above).
(A-3): A monomer having a molecular weight of less than 130 and having one (meth) acryloyl group (excluding the above-mentioned (a-1) and (a-2)).
(A-4): A monomer having a molecular weight of 130 to 300 and having one (meth) acryloyl group and a heterocycle (excluding the above-mentioned (a-1) and (a-2)).
(A-5): Oligoethylene glycol monoalkyl ether (meth) acrylate having a molecular weight of 130 to 300 and having one (meth) acryloyl group (however, (a-1) and (a-2) above. except for).
(A-6): An alkyl (meth) acrylate having a molecular weight of 130 to 300, having a long-chain alkyl group having 4 to 15 carbon atoms, and having one (meth) acryloyl group (however, the above (a). -1), excluding (a-2)).
(A-7): Polyalkylene glycol mono (meth) acrylate having a molecular weight of 130 to 300 (excluding the above-mentioned (a-1) and (a-2)).
(A-8): Fluorine atom-containing (meth) acrylate having a molecular weight of 130 to 300 (excluding the above-mentioned (a-1) and (a-2)).
(A-9): Hydrocarbon ring-containing (meth) acrylate having a molecular weight of 130 to 300 (excluding (a-1) and (a-2) above).
(A-10): A silane coupling agent having a molecular weight of 130 to 300 and having one (meth) acryloyl group (excluding the above-mentioned (a-1) and (a-2)).
(A-11): A monomer having a molecular weight of more than 300 and having one (meth) acryloyl group (excluding the above-mentioned (a-1) and (a-2)).

One type of monomer (A) may be used alone, or two or more types may be used in combination.

As the monomer (a-1) (a monomer having one (meth) acryloyl group and at least one carboxy group), an acid anhydride and a hydroxyl group-containing (meth) acrylate are used by a known method. Examples are those obtained by reacting.
Examples of the acid anhydride include aliphatic acid anhydrides such as succinic anhydride, maleic anhydride, tetrapropenyl succinic anhydride, and octenyl succinic anhydride; phthalic anhydride, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, and methylhexahydrophthalic acid. Such as alicyclic acid anhydride and the like.

Examples of the hydroxyl group-containing (meth) acrylate include monoesters of polyhydric alcohols such as dihydric alcohols and trihydric alcohols and (meth) acrylic acid. Specific examples of the hydroxyl group-containing (meth) acrylate include 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, hydroxyhexyl (meth) acrylate, and hydroxyoctyl (meth) acrylate. ) Acrylate, glycerin (meth) acrylate and the like can be mentioned.

Specific examples of the monomer (a-1) include 2- (meth) acryloyloxyethyl succinate, 2- (meth) acryloyloxyethyl maleate, 2- (meth) acryloyloxyethyl phthalate, and hexahydro. Examples thereof include 2- (meth) acryloyloxyethyl phthalate.

Examples of the monomer (a-2) (a monomer having one (meth) acryloyl group and at least one hydroxyl group) include 2-hydroxyethyl (meth) acrylate and 2-hydroxypropyl (meth) acrylate. , 4-Hydroxybutyl (meth) acrylate, hydroxyhexyl (meth) acrylate, hydroxyoctyl (meth) acrylate, hydroxyalkyl (meth) acrylate such as glycerin (meth) acrylate and the like.
Among these, 2-hydroxyethyl methacrylate, 2-hydroxypropyl methacrylate and 4-hydroxybutyl (meth) acrylate are particularly preferable.

Examples of the monomer (a-3) (a monomer having a molecular weight of less than 130 and having one (meth) acryloyl group) include methyl (meth) acrylate, ethyl (meth) acrylate, and (meth) acrylic. Examples thereof include acid, n-butyl acrylate, i-butyl acrylate, t-butyl acrylate, and allyl (meth) acrylate.
Of these, methyl (meth) acrylate, ethyl (meth) acrylate, n-butyl acrylate, i-butyl acrylate, and t-butyl acrylate are particularly preferable.
The lower limit of the molecular weight of the monomer (a-3) is not particularly limited, but 86 or more is preferable.

The monomer (a-4) (a monomer having a molecular weight of 130 to 300 and having one (meth) acryloyl group and a heterocycle) includes a furan ring, a hydrofuran ring, a pyran ring and a hydropyran ring. A (meth) acrylate having a heterocycle selected from the above group is preferable.

Examples of the (meth) acrylate having a furan ring include frill (meth) acrylate and furfuryl (meth) acrylate.
Examples of the (meth) acrylate having a hydrofuran ring include tetrahydrofurfuryl (meth) acrylate, tetrahydrofurfuryl (meth) acrylate, and caprolactone-modified tetrahydrofurfuryl (meth) acrylate.

Examples of the (meth) acrylate having a pyran ring include pyranyl (meth) acrylate.
Examples of the (meth) acrylate having a hydropyran ring include dihydropyranyl (meth) acrylate, tetrahydropyranyl (meth) acrylate, dimethyldihydropyranyl (meth) acrylate, and dimethyltetrahydropyranyl (meth) acrylate.
Of these, tetrahydrofurfuryl methacrylate, caprolactone-modified tetrahydrofurfuryl (meth) acrylate, dimethyldihydropyranyl methacrylate, and dimethyltetrahydropyranyl methacrylate are preferable.

As the monomer (a-5) (oligoethylene glycol monoalkyl ether (meth) acrylate having a molecular weight of 130 to 300 and having one (meth) acryloyl group), ethylene glycol monomethyl ether (meth) acrylate , Ethylene glycol monoethyl ether (meth) acrylate, diethylene glycol monomethyl ether (meth) acrylate, diethylene glycol monoethyl ether (meth) acrylate, 2-ethoxylated 2-ethylhexyl (meth) acrylate, polyethylene glycol monomethyl ether (meth) acrylate, Examples thereof include polyethylene glycol monoethyl ether (meth) acrylate.

As the monomer (a-6) (alkyl (meth) acrylate having a molecular weight of 130 to 300, having a long-chain alkyl group having 4 to 15 carbon atoms, and having one (meth) acryloyl group). N-butyl methacrylate, i-butyl methacrylate, t-butyl methacrylate, 2-ethylhexyl (meth) acrylate, n-octyl (meth) acrylate, nonyl (meth) acrylate, decyl (meth) acrylate, undecyl (meth) acrylate. , Dodecyl (meth) acrylate, tridecyl (meth) acrylate, tetradecyl (meth) acrylate, pentadecyl (meth) acrylate and the like.

Among these, n-butyl methacrylate, i-butyl methacrylate, t-butyl methacrylate, 2-ethylhexyl (meth) acrylate, n-octyl (meth) acrylate, nonyl (meth) acrylate, dodecyl (meth) acrylate, tridecyl (meth). ) Acrylate is particularly preferable.

Examples of the monomer (a-7) (polyalkylene glycol mono (meth) acrylate having a molecular weight of 130 to 300) include polyethylene glycol mono (meth) acrylate (the number of repetitions of ethylene glycol is 4 or less) and polypropylene glycol mono (). Meta) acrylate (polypropylene glycol repeating number of 2 or less) and the like can be mentioned.

Examples of the monomer (a-8) (fluorine atom-containing (meth) acrylate having a molecular weight of 130 to 300) include trifluoroethyl (meth) acrylate and tetrafluoroethyl (meth) acrylate.

The monomer (a-9) (containing a hydrocarbon ring-containing (meth) acrylate having a molecular weight of 130 to 300) contains a di or trialkylcyclohexyl group such as dimethylcyclohexyl (meth) acrylate or trimethylcyclohexyl (meth) acrylate. (Meta) acrylate; Di or trialkylphenyl group-containing (meth) acrylate such as dimethylphenyl (meth) acrylate, trimethylphenyl (meth) acrylate; benzyl methacrylate, isobornyl (meth) acrylate, dicyclopentenyloxyethyl (meth) crylate , Phenoxyethyl (meth) acrylate, phenoxydiethylene glycol (meth) acrylate, phenoxytriethylene glycol (meth) acrylate and the like.

Examples of the monomer (a-10) (silane coupling agent having a molecular weight of 130 to 300 and having one (meth) acryloyl group) include 3-methacryloxypropylmethyldimethoxysilane and 3-methacryloxypropyl. Examples thereof include trimethoxysilane, 3-methacryloxypropylmethyldiethoxysilane, 3-methacryloxypropyltriethoxysilane, and 3-acryloxypropyltrimethoxysilane.

Examples of the monomer (a-11) (a monomer having a molecular weight exceeding 300 and having one (meth) acryloyl group) include stearyl (meth) acrylate, cetyl methacrylate, and 2- (meth) acryloyloxyethyl. -2-Hydroxypropyl phthalate, octafluoropentyl methacrylate, heptadecafluorodecyl (meth) acrylate, polyethylene glycol mono (meth) acrylate (with 5 or more repetitions of ethylene glycol), polypropylene glycol mono (meth) acrylate (polypropylene glycol) Hydroxyl terminal polyalkylene glycol mono (meth) acrylate such as (repetition number 3 or more); polyalkylene glycol monoalkyl ether (meth) acrylate such as polyethylene glycol monomethyl ether (meth) acrylate (repetition number of ethylene glycol 5 or more), etc. Can be mentioned.
The upper limit of the molecular weight of the monomer (a-11) is not particularly limited, but is preferably 1,000 or less.

The above-mentioned monomer (A) may be used alone or in combination of two or more.
The content of the monomer (A) is 55 to 70 parts by mass when the total of the component (A), the component (B) described later, the component (C) and the component (D) is 100 parts by mass. It is preferable to have.
When the content of the monomer (A) is at least the above lower limit value, the surface curability of the resin composition and the strength of the cured coating film can be improved, and the coating workability can be improved. On the other hand, when the content of the monomer (A) is not more than the upper limit value, the viscosity of the resin composition does not decrease too much, so that the coated clothing layer can be prevented from flowing out.

In the monomer (A), it is preferable that the glass transition temperature (TgS) of the cured product obtained from the Fox formula shown in the following formula (1) is in the range of 25 ° C. to 50 ° C.
1 / (273 + TgS) = Σ (WAx / (273 + TgAx)) ... (1)

In the formula (1), "TgS" is the glass transition temperature (° C.) of the cured product of the monomer mixture of the radical polymerization type acrylic resin composition. The monomer (A) is composed of x-type (x ≧ 1) monomers (A1), (A2) ... (Ax), and “WAx” is each single mass in the monomer (A). It is the mass fraction of the body (however, these mass fractions are the values when the total of the monomers (A) is converted to 100% by mass). “TgAx” is the glass transition temperature (° C.) of the homopolymer of each monomer in the monomer (A).

When the TgS of the cured product of the monomer (A) is 25 ° C. or higher, the surface curability of the coating layer can be improved and the mechanical strength can be maintained. On the other hand, when the TgS of the cured product of the monomer (A) is 50 ° C. or lower, the flexibility of the coating layer can be maintained.

<Polymer (B)>
The monomer (B) is a monomer having two or more (meth) acryloyl groups. The monomer (B) can impart toughness to the cured coating film and improve the mechanical strength of the cured product.

Examples of the monomer (B) include ethylene glycol di (meth) acrylate, 1,3-propylene glycol di (meth) acrylate, 1,4-butanediol di (meth) acrylate, and 1,6-hexanediol di (meth) acrylate. ) Alcandiol di (meth) acrylates such as acrylate, 1,9-nonanediol di (meth) acrylate, 1,10-decanediol di (meth) acrylate, diethylene glycol di (meth) acrylate, triethylene glycol di (meth). ) Acrylate, Polyethylene glycol di (meth) acrylate, Dipropylene glycol di (meth) acrylate, Tripropylene glycol di (meth) acrylate, Polyproplen glycol di (meth) acrylate, Polybutylene glycol di (meth) acrylate, Bisphenol A ethylene Oxide adduct di (meth) acrylate, bisphenol A propylene oxide adduct di (meth) acrylate, bisphenol A diglycidyl ether (meth) acrylic acid adduct, neopentyl glycol di (meth) acrylate, 1,4-cyclohexanedimethanol Di (meth) acrylate, tricyclodecanedimethanol di (meth) acrylate, trimethylolpropantri (meth) acrylate, pentaerythritol tri (meth) acrylate, tris (2- (meth) acryloyloxyethyl) isocyanurate, pentaerythritol Examples thereof include tetra (meth) acrylate and dipentaerythritol hexa (meth) acrylate.

Among these, polyethylene glycol di (meth) acrylate, polypropylene glycol di (meth) acrylate, polybutylene glycol di (meth) acrylate, bisphenol A ethylene oxide adduct di (meth) acrylate, bisphenol A propylene oxide adduct di (meth) acrylate. ) Alkanediol di (meth) acrylate, 1,6-hexanediol di (meth) acrylate, 1,9-nonanediol di (meth) acrylate, 1,10-decanediol di (meth) acrylate and the like are preferable.
The monomer (B) may be used alone or in combination of two or more.

The content of the monomer (B) is 0.5 to 10 parts by mass when the total of the component (A), the component (B), the component (C) and the component (D) described later is 100% by mass. Preferably, 1 to 5 parts by mass is more preferable. When the content of the monomer (B) is 0.5 parts by mass or more, toughness can be imparted to the coating film to improve the mechanical strength of the coating film, and when it is 10 parts by mass or less, the coating film is cured. The time is not too short, the coating workability is improved, and the toughness of the cured product is not impaired.

(Polymer (C))
The polymer (C) is an acrylic polymer (hereinafter, also referred to as “polymer (C1)”) and a polymer having a (meth) acryloyl group (hereinafter, also referred to as “polymer (C2)”). It is at least one polymer selected from the group consisting of.

The polymer (C1) is a homopolymer or copolymer having a monomer unit derived from a monomer having a (meth) acryloyl group. Examples of the polymer (C1) include (meth) acrylic acid (co) polymer, (meth) acrylate (co) polymer, a copolymer of (meth) acrylic acid and (meth) acrylate, and polymerizable two. Examples thereof include (meth) acrylic polymers having a double bond.

The (meth) acrylic acid (co) polymer is a homopolymer or copolymer having a monomer unit derived from (meth) acrylic acid. Examples of the (meth) acrylic acid (co) polymer include a homopolymer of acrylic acid, a homopolymer of methacrylic acid, a copolymer of acrylic acid and methacrylic acid, and other single amounts of (meth) acrylic acid. Examples thereof include polymers with a polymer (excluding (meth) acrylate). Examples of other monomers include vinyl group-containing monomers such as styrene, α-methylstyrene, acrylonitrile, and vinyl acetate. When other monomers are used, two or more thereof may be used in combination.

The (meth) acrylate (co) polymer is a homopolymer or copolymer having a monomer unit derived from (meth) acrylate. Examples of the (meth) acrylate (co) polymer include a polymer obtained by polymerizing only one or more (meth) acrylates, one or more (meth) acrylates, and other monomers (however, (meth) acrylic). Examples include copolymers with (excluding acids). Examples of other monomers include vinyl group-containing monomers such as styrene, α-methylstyrene, acrylonitrile, and vinyl acetate. When other monomers are used, two or more thereof may be used in combination.

Examples of the (meth) acrylate include the monofunctional (meth) acrylate exemplified above in the description of the monomer (A). Among them, alkyl (meth) acrylates such as methyl (meth) acrylate, ethyl (meth) acrylate, n-butyl (meth) acrylate, i-butyl (meth) acrylate, t-butyl (meth) acrylate, and 2-ethylhexyl (meth) acrylate. ) Acrylate is preferred.

The (meth) acrylic polymer having a polymerizable double bond has a monomer unit derived from a monomer having a (meth) acryloyl group, and has a polymerizable double bond.
The method for producing a (meth) acrylic polymer having a polymerizable double bond is not particularly limited. A preferable example of a method for producing a (meth) acrylic polymer having a polymerizable double bond is shown below.

As the first-stage reaction, a monomer (c1) having one or more (meth) acryloyl groups and a monomer having a first functional group and a (meth) acryloyl group involved in the esterification reaction described later. (C2) is copolymerized to obtain a precursor copolymer (C1') having a first functional group.

As a reaction of the second step, a monomer (c3) having a second functional group and a polymerizable double bond which forms a bond by an esterification reaction with the first functional group is used as a precursor copolymer (C1'). ). As a result, the first functional group of the precursor copolymer (C1') and the second functional group of the monomer (c3) are reacted to form an ester. After the ester formation, the polymerizable double bond derived from the monomer (c3) remains. Therefore, a polymerizable double bond can be introduced into the precursor copolymer (C1') by the ester formation reaction, and a (meth) acrylic polymer having a polymerizable double bond can be obtained.

Specific examples of the monomer (c1) include the monofunctional (meth) acrylate exemplified above in the description of the monomer (A). Examples of the combination of the first functional group and the second functional group include a combination of a carboxy group and a glycidyl group, and a combination of a hydroxyl group and an isocyanate group. When the combination of the first functional group and the second functional group is a combination of a carboxy group and a glycidyl group, (meth) acrylic acid is used as the monomer (c2) and glycidyl as the monomer (c3). It is preferable to use (meth) acrylate.

The glass transition temperature of the polymer (C1) (hereinafter referred to as “Tg”) is preferably 0 ° C. or higher, more preferably 20 to 105 ° C. The higher the Tg, the higher the solubility in the monomer (A), and the lower the Tg, the higher the tensile strength of the cured product of the resin composition at the time of cutting. Tg is determined by measurement with a differential scanning calorimeter (DSC).

The weight average molecular weight (Mw) of the polymer (C1) is preferably 10,000 to 200,000, more preferably 20,000 to 170,000, and particularly preferably 30,000 to 100,000. The higher the weight average molecular weight, the higher the tensile strength of the cured product of the resin composition at the time of cutting, and the lower the weight average molecular weight, the higher the solubility in the monomer (A).

For the weight average molecular weight, 100 μL of a 0.4% by mass tetrahydrofuran solution of the polymer (C1) was injected into a gel permeation chromatography (GPC) apparatus, and the flow rate was 1 mL / min, the eluent was tetrahydrofuran, and the column temperature was 40 ° C. The molecular weight measured under the above conditions is converted to standard polystyrene.

Examples of the polymer (C2) include urethane (meth) acrylate oligomers, polyester (meth) acrylate oligomers, and epoxy (meth) acrylate oligomers. However, since the acrylic polymer having a (meth) acryloyl group is included in the polymer (C1) as a (meth) acrylic polymer having a polymerizable double bond, it is excluded from the polymer (C2). .. As the polymer (C2), one type may be used alone, or two or more types may be used in combination.

The urethane (meth) acrylate oligomer is a compound having a (meth) acryloyl group and a plurality of urethane bonds. The urethane (meth) acrylate oligomer is produced, for example, by reacting a urethane oligomer having an isocyanate group (-NCO) obtained by reacting a polyol with an isocyanate with a compound having a hydroxyl group and a (meth) acryloyl group. Can be done.

Examples of the polyol used for producing the urethane oligomer include the following.
-Polyalkylene glycol: polyethylene glycol, polypropylene glycol, polybutylene glycol, polyhexamethylene glycol, etc.
-Addition reaction product of divalent phenol (bisphenol A, bisphenol F, bisphenol S, etc.) and alkylene oxide (ethylene oxide, propylene oxide, etc.).
・ Polyhydric alcohols (ethylene glycol, propylene glycol, butanediol, butylene glycol, methylpentanediol, etc.) and polybasic acids (phthalic acid, isophthalic acid, tetrahydrophthalic acid, succinic acid, maleic acid, fumaric acid, adipic acid, etc. A polyester polyol obtained by reacting succinic acid, trimellitic acid, etc.) with an acid anhydride.
-Polylactone diol obtained from alkylene glycol and lactone.
-A polycarbonate diol obtained by reacting a diol (butanediol, pentanediol, hexanediol, heptanediol, octanediol, cyclohexanedimethanol, etc.) with a carbonate agent (phosgene, dimethyl carbonate, etc.).
As the polyol, one type may be used alone, or two or more types may be used in combination.

Examples of the isocyanate used for producing the urethane oligomer include the following.
-Diisocyanate: 2,4-tolylene diisocyanate, 2,6-tolylene diisocyanate, diphenylmethane-4,4'-diisocyanate, dicyclohexylmethane-4,4'-diisocyanate, hexamethylene diisocyanate, tetramethylene diisocyanate, phenylenediisocyanate, Xylylene diisocyanate, tetramethylxylylene diisocyanate, isophorone diisocyanate, etc.
-Adduct compound of isocyanate and water, trimethylolpropane, etc.
-Isocyanate trimer cyclized compound.
One type of isocyanate may be used alone, or two or more types may be used in combination.

Examples of the compound having a hydroxyl group and a (meth) acryloyl group used for producing a urethane (meth) acrylate oligomer include 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, and 2-hydroxybutyl (meth). ) Hydroxyl-containing (meth) acrylates such as acrylate and 4-hydroxybutyl (meth) acrylate can be mentioned. As the compound containing a hydroxyl group and a (meth) acryloyl group, one type may be used alone, or two or more types may be used in combination.

In the production of the urethane (meth) acrylate oligomer, a compound having a hydroxyl group and a (meth) acryloyl group and a compound having a vinyl group other than the hydroxyl group and the (meth) acryloyl group (allyl group-containing alcohol, etc.) may be used in combination. .. In this case, the urethane (meth) acrylate oligomer has a vinyl group derived from a compound having a hydroxyl group and a vinyl group in addition to the (meth) acryloyl group.

Examples of the allyl group-containing alcohol include allyl alcohol, ethylene glycol monoallyl ether, diethylene glycol monoallyl ether, polyethylene glycol monoallyl ether, propylene glycol monoallyl ether, dipropylene glycol monoallyl ether, polypropylene glycol monoallyl ether, and glycerin mono. Examples thereof include allyl ether, glycerin diallyl ether, trimethylolpropane monoallyl ether, trimethylolpropanediallyl ether, pentaerythritol monoallyl ether, pentaerythritol diallyl ether, and pentaerythritol triallyl ether.

The weight average molecular weight (Mw) of the urethane (meth) acrylate oligomer is preferably 1,000 or more, and more preferably 5,000 or more, from the viewpoint of imparting good flexibility by an appropriate distance between cross-linking points. Considering the viscosity of the resin composition in order to improve the coating workability, the mass average molecular weight is preferably 50,000 or less, and more preferably 30,000 or less. The higher the weight average molecular weight, the better the elongation of the cured product of the resin composition during cutting, and the lower the weight average molecular weight, the more the urethane (meth) acrylate oligomer is dissolved in the monomer (A) when the resin composition is produced. The sex tends to improve. The weight average molecular weight of the urethane (meth) acrylate oligomer was measured in the same manner as in the case of the polymer (C1).

A polyester (meth) acrylate oligomer is a compound having a (meth) acryloyl group and a plurality of ester bonds. The polyester (meth) acrylate oligomer is, for example, a compound having a polyester obtained by reacting a polybasic acid and a polyhydric alcohol, a functional group capable of ester bonding with a terminal hydroxyl group or a carboxy group thereof, and a (meth) acryloyl group. Can be produced by reacting with.

Examples of the polybasic acid used for producing polyester include hexahydrophthalic anhydride, hexahydrophthalic acid, 1,4-cyclohexanedicarboxylic acid, 1,3-cyclohexanedicarboxylic acid, methylhexahydrophthalic acid, maleic acid, and anhydrous. Examples thereof include dibasic acids such as maleic acid, fumaric acid, itaconic acid and adipic acid. One type of polybasic acid may be used alone, or two or more types may be used in combination.

Examples of the polyhydric alcohol used in the production of polyester include neopentyl glycol, hydrogenated bisphenol A, hydrogenated bisphenol F, 2,2-diethyl-1,3-propanediol, 1,4-cyclohexanedimethanol, and 1 , 4-Cyclohexanediol, ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, 1,3-propylene glycol, dipropylene glycol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol , 1,7-Heptanediol, 1,8-octanediol, 1,9-nonanediol and 1,10-decanediol and other dihydric alcohols. One type of polyhydric alcohol may be used alone, or two or more types may be used in combination.

The epoxy (meth) acrylate oligomer is a reaction product of an epoxy resin and a monomer component containing (meth) acrylic acid.
Examples of the epoxy resin used for producing the epoxy (meth) acrylate oligomer include bisphenol A type epoxy resin, bisphenol F type epoxy resin, bisphenol E type epoxy resin, phenol novolac type epoxy resin, and cresol novolac type epoxy resin. Be done. As the epoxy resin, various ones such as a solid one and a liquid one can be used. One type of epoxy resin may be used alone, or two or more types may be used in combination.

The monomer component used in the production of the epoxy (meth) acrylate oligomer may contain a monomer other than (meth) acrylic acid, if necessary. The other monomer is not particularly limited as long as it can be copolymerized with (meth) acrylic acid, and examples thereof include the monofunctional (meth) acrylate exemplified above in the description of the monomer (A).

Examples of the polymer (C) include acrylic acid (co) polymer, (meth) acrylate (co) polymer, copolymer of (meth) acrylic acid and (meth) acrylate, urethane (meth) acrylate oligomer, and polyester. One kind selected from the group consisting of (meth) acrylate oligomer, epoxy (meth) acrylate oligomer and the like may be used alone, or two or more kinds may be used in combination.

Further, the polymer (C) may be used alone as the polymer (C1) or the polymer (C2), or may be used in combination of two or more.
The content of the polymer (C) is preferably 15 to 35 parts by mass when the total of the component (A), the component (B), the component (C) and the component (D) described later is 100 parts by mass. 20 to 35 parts by mass is more preferable.

When the content of the polymer (C) is not more than the above upper limit value, the usable time of the resin composition (the time when the composition has fluidity and the coating work is possible) can be sufficiently taken, and the coating workability is improved. Can be done well. On the other hand, when the content of the polymer (C) is at least the above lower limit value, the viscosity of the resin composition can be balanced, the curability thereof can be improved, and the curing time can be appropriately shortened.

<Plasticizer (D)>
The plasticizer (D) is blended for the purpose of softening the coating film and reducing shrinkage during curing.

As the plasticizer (D), one soluble in the monomer (A) is used.
Specifically, phthalates such as dibutylphthalate, diheptylphthalate, di-n-octylphthalate, di-2-ethylhexylphthalate, octyldecylphthalate, di-n-decylphthalate, diisodecylphthalate, and butylbenzylphthalate; Di-2-ethylhexyl adipate, octyldecyl adipate, di-2-ethylhexyl sebacate, dibutyl sebacate, di-2-ethylhexyl azelate, tributyl acetylcitrate, polypropylene glycol, chlorinated paraffin; adipic acid-based, azelaic acid-based , Sebatic acid-based, phthalate-based polyester-based polymer plasticizers; epoxy-based polymer plasticizers such as epoxidized oils and epoxidized fatty acid esters, Mezamol, Mezamol II (trade names, all manufactured by Rankses Co., Ltd.), etc. Examples thereof include alkyl sulfonic acid esters.
In addition, an alicyclic dibasic acid ester-based plasticizer represented by the following formula (I) can also be mentioned.

However, R ¹ and R ² are independently alkyl groups having 1 to 20 carbon atoms.
Examples of the alicyclic dibasic acid ester-based plasticizer represented by the formula (I) include 1,2-cyclohexanedicarboxylic acid diisopentyl ester, 1,2-cyclohexanedicarboxylic acid diisononyl ester, and 1,2-cyclohexanedicarboxylic acid. Acid diisodecyl ester, 1,2-cyclohexanedicarboxylic acid di (2-ethylhexyl) ester, 1,2-cyclohexanedicarboxylic acid dialkyl ester having 7 to 11 carbon atoms in the alkyl group, 9 to 11 carbon atoms in the alkyl group Examples thereof include a 1,2-cyclohexanedicarboxylic acid dialkyl ester and a 1,2-cyclohexanedicarboxylic acid dialkyl ester having an alkyl group having 7 to 9 carbon atoms.

Specific product names of the alicyclic dibasic acid ester-based plasticizer represented by the formula (I) include Hexamol DINCH (1,2-cyclohexanedicarboxylic acid diisononyl ester, manufactured by BASF Japan Ltd.). ..
The carbon number of R ¹ and R ² is preferably 1 to 20 and more preferably 3 to 16 because the balance between the tensile strength at cutting and the elongation at cutting at room temperature and low temperature of the cured product is good.

The content of the polymer (D) is preferably 5 to 19 parts by mass when the total of the components (A), (B), (C) and (D) is 100 parts by mass. ~ 15 parts by mass is more preferable.
These can be used alone or in combination of two or more.
When the content is 5 parts by mass or more, elongation can be imparted to the cured product of the resin composition.
On the other hand, when the content is 19 parts by mass or less, the plasticizer does not exude to the surface of the cured product of the resin composition.

<Wax (E)>
The wax (E) exerts an action such as improvement of surface curability by utilizing an air blocking action.
Examples of the wax (E) include solid waxes. Examples of solid waxes include paraffins, polyethylenes, higher fatty acids such as stearic acid, and the like.

Paraffin wax is preferable as the wax (E). It is preferable to use two or more kinds of paraffin wax having different melting points in combination. The melting point of the paraffin wax is preferably 40 to 80 ° C. By setting the melting point to 40 ° C. or higher, a sufficient air blocking action can be obtained when the resin composition is coated and cured, and the surface curability becomes good. By setting the melting point to 80 ° C. or lower, the solubility in the monomer (A) (preferably the monomer (A) and the polymer (C)) becomes good when the resin composition is produced. Further, by using the paraffin wax in combination, when the resin composition is coated and cured, a sufficient air blocking action can be obtained even when the base temperature changes, and the surface curability becomes good. When used in combination, it is preferable to use those having a melting point difference of about 5 ° C. to 20 ° C.

As the wax (E), a wax dispersed in an organic solvent may be used in terms of improving the surface curability. Since the wax (E2) is dispersed in the organic solvent and is made into fine particles, the air blocking action is effectively exhibited. The dispersed wax (E2) is commercially available, and the resin composition of the present invention can be prepared by adding the wax as it is. In this case, the resin composition of the present invention also contains an organic solvent.
The dispersed wax (E2) may be one in which the wax (E) is dispersed in the monomer (A) without containing any organic solvent.

The amount of the wax (E) added is 0.1 to 3 parts by mass with respect to 100 parts by mass of the components (A), (B), (C) and (D), and is 0.1 to 0.1. 2 parts by mass is more preferable.
When the amount of the wax (E) added is less than 0.1 parts by mass, the air blocking action when the resin composition is coated and cured is insufficient, and the surface curability deteriorates. When the amount of the wax (E) added exceeds 3 parts by mass, the dispersibility of the wax when storing the resin composition deteriorates.

<Other ingredients>
(3rd grade amine (F))
The tertiary amine (F) is a curing accelerator that accelerates the curing reaction.
Examples of the tertiary amine (F) include aniline, N, N-dimethylaniline, N, N-diethylaniline, p-toluidine, N, N-dimethyl-p-toluidine, N, N-bis (2-hydroxyethyl). -P-toluidine, 4- (N, N-dimethylamino) benzaldehyde, 4- [N, N-bis (2-hydroxyethyl) amino] benzaldehyde, 4- (N-methyl-N-hydroxyethylamino) benzaldehyde, N, N-bis (2-hydroxypropyl) -p-toluidine, N-ethyl-m-toluidine, triethanolamine, m-toluidine, diethylenetriamine, pyridine, phenylimorpholin, piperidine, N, N-bis (hydroxyethyl) ) N, N-substituted aniline such as aniline and diethanolaniline, N, N-substituted-p-toluidine, 4- (N, N-substituted amino) benzaldehyde and the like.

In the resin composition of the present invention, among the above tertiary amines (F), it is more preferable to use aromatic tertiary amines. The aromatic tertiary amine preferably has at least one aromatic residue directly bonded to a nitrogen atom, and specifically, N, N-dimethyl-p-toluidine, N, N-diethylaniline. , N, N-diethyl-p-toluidine, N- (2-hydroxyethyl) N-methyl-p-toluidine, N, N-di (2-hydroxyethyl) -p-toluidine, N, N-di (2) -Hydroxypropyl) -p-toluidine; N, N-di (2-hydroxyethyl) -p-toluidine or N, N-di (2-hydroxypropyl) -p-toluidine ethylene oxide or propylene oxide adduct, etc. Can be mentioned. Further, the body is not limited to the p (para) body, and may be an o (ortho) body or an m (meta) body.
Furthermore, from the viewpoint of reactivity and curability of the syrup composition (Y ¹ ), N, N-dimethyl-p-toluidine, N, N-diethyl-p-toluidine, N, N-di (2-hydroxyethyl) It is particularly preferred to use -p-toluidine, N, N-di (2-hydroxypropyl) -p-toluidine.

As the tertiary amine (F), the above-mentioned one type may be used alone, or two or more types may be used in combination.
The amount of the tertiary amine (F) added is 100% by mass of the components (A), (B), (C) and (D) from the viewpoint of the balance between curability and pot life (workability). With respect to parts, 0.05 to 10 parts by mass is preferable, and 0.2 to 8 parts by mass is more preferable.
When the amount of the tertiary amine (F) added is 0.05 parts by mass or more, the surface curability is improved. On the other hand, the appropriate pot life can be obtained by adding the tertiary amine (F) to 10 parts by mass or less.

(Other effect promoters)
Examples of the curing accelerator include polyvalent metal soaps such as cobalt naphthenate, cobalt octylate, and cobalt acetoacetylate, in addition to the tertiary amine (F).
These are preferably added in an amount of 0.2 to 2 parts by mass, more preferably 0.3 to 1 part by mass, based on 100 parts by mass of the resin composition.

(Polymerization initiator)
In order to cure the resin composition of the present invention, it is preferable to use a redox catalyst in which a curing accelerator and a curing agent are combined.
Examples of the curing agent include known polymerization initiators capable of initiating radical polymerization. Examples of the polymerization initiator include diacyl peroxide, alkyl peroxide, ketone peroxide, and azo compounds.
As the polymerization initiator, diacyl peroxide is preferable, and benzoyl peroxide is particularly preferable. From the viewpoint of handleability, the benzoyl peroxide is preferably in the form of a liquid, paste or powder diluted with an inert liquid or solid to a concentration of about 30 to 55% by mass.

As the curing agent, one type may be used alone, or two or more types may be used in combination.
The amount of the curing agent added is preferably adjusted appropriately so that the pot life of the resin composition is 5 to 60 minutes. If a curing agent is added in this range, the polymerization reaction is started immediately after the addition, and the curing of the resin composition proceeds.
The amount of the benzoyl peroxide added is preferably 0.25 to 10 parts by mass, more preferably 0.5 to 8 parts by mass, based on 100 parts by mass of the resin composition. By setting the amount of benzoyl peroxide added to 0.25 parts by mass or more, the curability of the resin composition tends to be improved.
By setting the amount of benzoyl peroxide added to 10 parts by mass or less, the coating workability of the resin composition and various physical properties of the obtained coating layer tend to be improved.

(Silane coupling agent)
A silane coupling agent may be added to the resin composition for the purpose of stabilizing the adhesiveness to a substrate such as an asphalt paved road and imparting durability of the adhesive strength.
Examples of the silane coupling agent include vinyl trichlorosilane, vinyltris (β-methoxyethoxy) silane, γ-methacryloxypropyltrimethoxysilane, β- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, and γ-glusideoxypropyl. Examples thereof include trimethoxysilane and γ-mercaptopropyltrimethoxysilane.
The amount of the silane coupling agent added is preferably 10 parts by mass or less, more preferably 5 parts by mass or less from the viewpoint of curability and cost, with respect to 100 parts by mass of the resin composition. By adding the silane coupling agent to 10 parts by mass or less, the surface curability is improved while maintaining the stability of the adhesiveness of the syrup composition to the substrate.

(Polymerization inhibitor)
A polymerization inhibitor may be added to the resin composition for the purpose of improving storage stability and adjusting the polymerization reaction.
Examples of the polymerization inhibitor include hydroquinone, 2-methylhydroquinone, 2-6-di t-butyl 4-methylphenol, catechol, hydroquinone monomethyl ether, monotersial butyl hydroquinone, 2,5-ditercious butyl hydroquinone, and p-benzoquinone. , Phenothiazine, tertiary butylcatechol, 4-methoxy-1-naphthol, 1,4-naphthoquinone, 2-hydroxy-1,4-naphthoquinone and the like. These may be used alone or in combination of two or more.
The polymerization inhibitor is preferably 0.001 to 0.1 parts by mass, and 0.002 to 0.08, based on 100 parts by mass of the components (A), (B), (C), and (D). Parts by mass are more preferred.

(UV absorber or light-resistant stabilizer)
An ultraviolet absorber and a light-resistant stabilizer can be added to the resin composition at an arbitrary ratio, if necessary.
Examples of the ultraviolet absorber include 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-octyloxybenzophenone, 2-hydroxy-4-decyloxybenzophenone, 2-hydroxy-4,4'-dimethoxybenzophenone, and 2-hydroxy-4. , Derivatives of 2-hydroxybenzophenone such as 4'-dibutoxybenzophenone or 2- (2'-hydroxy-5'-methylphenyl) benzotriazole, 2- (2'-hydroxy-3', 5'-ditershariibutyl Phenyl) benzotriazole or halides thereof or phenylsalicylate, p-tersary butylphenylsalicylate and the like can be mentioned. These may be used alone or in combination of two or more.

On the other hand, as the light-resistant stabilizer, bis (2,2,6,6, -tetramethyl-4-piperidyl) sebacate, bis (1,2,2,6,6, -pentamethyl-4-piperidyl) sebacate, 1 -[2- [3- (3,5-di-t-butyl-4-hydroxyphenyl) propionyloxy] ethyl] -4- [3- (3,5-di-t-butyl-4-hydroxyphenyl) Propionyloxy] -2,2,6,6, -tetramethylpiperidine, 4-benzoyloxy-2,2,6,6, -tetramethylpiperidine and the like can be mentioned. These may be used alone or in combination of two or more.

(Other additives)
Further, an antioxidant, an antifoaming agent, a leveling agent, a shaking agent such as Aerosil, or the like may be added at an arbitrary ratio.
Furthermore, inorganic pigments such as chromium oxide, red iron oxide and iron oxide, and organic pigments such as phthalocyanine blue may be added in an arbitrary ratio, and extender pigments such as calcium carbonate may be used.
Examples of the defoaming agent include known defoaming agents. Specific examples include an acrylic defoaming agent in which a special acrylic polymer is dissolved in a solvent, a vinyl defoaming agent in which a special vinyl polymer is dissolved in a solvent, and the like, from Kusumoto Kasei Co., Ltd. Commercially available Disparon series (Product names: OX-880EF, OX-881, OX-883, OX-77EF, OX-710, OX-8040, 1922, 1927, 1950, P-410EF, P-420, P -425, PD-7, 1970, 230, 230HF, LF-1980, LF-1982, LF-1983, LF-1984, LF-1985, etc.) are more preferable, and 230, 230HF, among the Disparon series, LF-1980 and LF-1985 are more preferable, and 230 and LF-1985 are particularly preferable. In addition, BYK-052 and BYK-1752 commercially available from Big Chemie Japan Co., Ltd. can also be used.

<Structure>
The present embodiment is a structure including an aggregate layer. The aggregate layer contains the resin composition of the present embodiment and the aggregate.

<Manufacturing method of structure>
The method for manufacturing the structure of the present embodiment includes the following steps.
A step of coating at least a part of the surface of the structure with a curing agent-containing resin composition in which a curing agent is mixed with the resin composition to form a coating layer, and a step of placing an aggregate on the coating layer A step of curing the coating layer to form an aggregate layer to which the aggregate is fixed.

(aggregate)
The coating layer may be a layer coated with a resin composition in order to immobilize the aggregate on the surface of at least a part of the structure. In this case, the resin composition of the present invention mixed with a curing agent is coated on the surface of at least a part of the structure, and the aggregate is placed on the coating layer before the resin composition is cured. The coating layer may be cured to fix the aggregate.

When the aggregate is fixed, a protective layer may be provided on the upper layer on which the covering layer is further hardened and the aggregate is fixed. In this case, the aggregate is placed near the boundary between the covering layer and the protective layer. It may be contained.
Here, "containing aggregate in the vicinity of the boundary" indicates a state in which aggregate is contained at least over the covering layer and the protective layer, and the aggregate is the coating layer and the protective layer. It may be present only near the boundary, or may be present in the entire area between the covering layer and the protective layer.

Examples of aggregates used include natural inorganic ores such as silica sand, river sand, cold water stone, emery, and marble, alumina, slag, glass, ceramic aggregate, pottery, porcelain, tile, glass beads, and colored aggregate. These are used alone or in combination of two or more.
The preferred aggregate particle size is more preferably 0.5 to 3.3 mm than 0.5 to 4 mm. If the particle size of the aggregate is too small, the anti-slip effect will be low when the protective layer resin is applied, and if it is too large, it will be difficult for pedestrians to walk and there is a risk of falling.

Further, it is preferable to use granular hard aggregate as the aggregate to be immobilized on the coating layer.
The hard aggregate having a particle size of 0.5 to 4 mm occupies 80% by weight or more of the total aggregate, and the grains of the hard aggregate preferably have a specific gravity of 2.1 to 3.5 and a Mohs hardness of 7. As described above, it is preferable that the wear loss by the wear test method specified in JIS-A1121 is 20% or less.

The hard aggregate was sprayed on the coating layer in an effective amount of 2.5 to 6.0 kg per square meter.
The particle size and particle size distribution of the aggregate can be measured by the dry sieving according to the general rules of the JIS-Z8815 sieving test method.

When the coating layer is colored, it is preferable to use, for example, a colored ceramic aggregate of the same color.
In addition, the aggregate may be an artificial stone obtained by curing an unsaturated polyester resin, an acrylic resin, an epoxy resin, a phenol resin, or the like, or a pulverized product thereof.
The content of the aggregate is not particularly limited, but it is preferable to use an amount that can cover the front surface of the coating layer.

[Characteristics of coating layer]
The thickness of the coating layer formed by coating the asphalt pavement as a structure is preferably 1 mm to 5 mm, and particularly preferably 1 mm to 3 mm. If the thickness of the coating layer is too thin, the curability of the resin composition is lowered, and when the aggregate is fixed in consideration of non-slip property, the grip of the aggregate is lowered and the amount of aggregate detachment is large. It tends to be. If it is too thick, the cost will increase, which is not preferable.

[Method of forming the coating layer]
The resin composition of the present invention is used for a coating layer such as an inclined portion of a base material such as a floor surface and a pavement surface of a road.
Examples of the method of covering the construction surface such as the floor surface and the pavement surface of the road include a method of applying a resin composition to the construction surface to form a coating layer.

Further, in the case of immobilizing the aggregate in consideration of non-slip property, the present invention is characterized in that a resin composition is first applied and then the aggregate is sprayed to obtain a cured coating layer.
Specifically, the resin composition is first applied to the construction surface to form a coating layer, and then the aggregate is sprayed. It is preferable that the aggregate is sprayed within the pot life of the resin composition, and the resin composition for the coating layer is sprayed excessively by hand or by using a sprayer so that the coating layer cannot be seen. After curing, it is preferable to collect excess aggregate.

Further, after that, it is more preferable to apply the resin composition for the protective layer to the surface of the aggregate while filling the gap between the surface of the coating layer and the surface of the aggregate.
Examples of the coating means include known coating methods using a roller, a gold iron, a brush, a free brush, a coating machine (spray coating machine, etc.) and the like.
The temperature at the time of coating the resin composition is preferably −10 to 60 ° C., particularly preferably −10 to 40 ° C., and the curing time is preferably in the range of 10 to 60 minutes from the viewpoint of workability.
When the curing time is 10 minutes or more, good coating workability and aggregate grip property can be obtained, and when the curing time is 60 minutes or less, good adhesion can be obtained when the structure is asphalt pavement or the like.
The curing time can be adjusted by adjusting the amounts of the curing agent and the accelerator according to the temperature at the time of coating.

Further, the method of forming the coating layer is a method in which the aggregate is not mixed with the resin composition and is sprayed between the coating layer and the protective layer, so that it is possible to further prevent the aggregate from coming off. ..

Hereinafter, the present invention will be specifically described with reference to Examples, but the present invention is not limited thereto.
Unless otherwise specified in the examples, all "parts" indicate "parts by mass".
Moreover, the measurement of various physical properties of the resin composition obtained in each production example was carried out as follows.

<Preparation of resin composition>
[Example 1: Resin composition (S-1)]
38 parts of methyl methacrylate (hereinafter abbreviated as "MMA") and 18 parts of 2-ethylhexyl acrylate (hereinafter abbreviated as "2-EHA") as monomer (A) in a 1 L flask equipped with a stirrer, thermometer and cooling tube. , 2 parts of polypropylene glycol dimethacrylate (manufactured by Nichiyu Co., Ltd., trade name: Blemmer PDP-400N (hereinafter abbreviated as "PDP-400N")) as monomer (B), and alkyl sulfonic acid ester as component (C). (Manufactured by Rankses Co., Ltd., trade name: Mezamol) 10 parts, 2-6-di-t-butyl 4-methylphenol (hereinafter abbreviated as "BHT") 0.26 parts as a light-resistant stabilizer, and wax (D) 0.5 parts of paraffin-130 (manufactured by Nippon Seiwa Co., Ltd., paraffin wax (hereinafter abbreviated as "P-130")) and paraffin-150 (manufactured by Nippon Seiwa Co., Ltd., paraffin wax (hereinafter "P-150") 0.4 parts, HNP-9 (manufactured by Nippon Seiwa Co., Ltd., paraffin wax (hereinafter abbreviated as "HNP-9")) 0.3 parts, defoamer (manufactured by Big Chemie Japan Co., Ltd., product) Name: BYK-1752) 0.5 parts, N, N-di (2-hydroxyethyl) -p-toluidine (hereinafter abbreviated as "PTEO") 0.4 parts as a curing accelerator (E), and an ultraviolet absorber 0.2 parts of JF-77 (manufactured by Johoku Chemical Co., Ltd.) (hereinafter abbreviated as "JF-77") was added as paraffin wax, and then the polymer (P-1) was used as the polymer (C) while stirring. ) 32 copies were put in. Subsequently, it was dissolved by heating at 75 ° C. for 2 hours. After confirming the dissolution, the mixture was cooled to obtain a resin composition (S-1). The compounding composition of the obtained resin composition (S-1) is shown in Table 1.

[Examples 2 to 4: Preparation of resin compositions (S-2) to (S-4)]
Resin compositions (S-2) to (S-4) were obtained in the same manner as in Example 1 except that the compounding composition was changed to the composition shown in Table 1.

[Comparative Examples 1 to 5: Preparation of Resin Compositions (S-5) to (S-9)]
Resin compositions (S-5) to (S-9) were obtained in the same manner as in Example 1 except that the compounding composition was changed to the composition shown in Table 1.

(viscosity)
The viscosity of the resin composition of each example was measured by the following measuring method. The results are shown in Tables 1 and 2.
The viscosity at 23 ± 1 ° C. (viscosity at 60 rpm) was measured using a B-type (Brookfield-type) viscometer (BM-type, manufactured by Tokimec Co., Ltd.).

(TI value)
For the resin composition of each example, the TI value (thixotropic index) was measured by the following measuring method. The results are shown in Table 1.
According to the method specified in JIS-K6833-1: 2008, when the temperature of the composition is 23 ± 1 ° C., the following formula is used from the viscosity measured using a B-type viscometer (BM type, manufactured by Tokimec Co., Ltd.). Obtained according to (2).
TI value = [Viscosity at 6 rpm (mPa · s)] / [Viscosity at 60 rpm (mPa · s)] ... (2)

<Performance evaluation>
A resin composition containing a curing agent was prepared as follows, and tensile tests, workability, curing characteristics, and flow resistance were measured or evaluated. They are shown in Tables 1 and 2.

(Tensile strength, tensile fracture strength)
Immediately after production, the resin composition containing a curing agent was poured into a mold in the shape of a tensile test piece according to JIS-K6911: 1995 with a weight of 6 kg / m ² in an environment-variable room having a room temperature of 23 ° C. and a humidity of 50%. The mixture was cured over 2 hours and demolded to obtain a plate-shaped test piece having a thickness of 5.5 mm.
Tensile strength and tensile fracture strength of these test pieces were measured at 23 ° C. 3 hours and 7 days after the resin composition containing a curing agent was produced according to the measurement method specified in JIS-K6911: 1995.

<Coating workability>
As a radical polymerization type acrylic resin-based primer, a concrete plate (30 cm x 30 cm x 6 cm) coated and hardened with the product name "Acrysy Wrap DR-90" manufactured by Ryokou Co., Ltd. at a ratio of 0.3 kg / m ² . Above, the workability when the resin composition containing a curing agent was applied so as to have a ratio of 1.9 kg / m ² was evaluated. The evaluation was judged based on the following criteria. The results are shown in Table 2.
Good (○): The composition could be sufficiently leveled with a brush and applied uniformly.
Defective (x): When the formulation was brushed, it took a very long time to obtain a highly viscous and difficult to level and / or uniform surface.

<Flow resistance>
As a radical polymerization type acrylic resin-based primer, a concrete plate (30 cm x 30 cm x 6 cm) coated and hardened with the product name "Acrysilup DR-90" manufactured by Ryokou Co., Ltd. so as to have a ratio of 0.3 kg / m ² . When the resin composition containing a curing agent is applied on top at a ratio of 1.9 kg / m ² , the amount of resin that has fallen from the concrete plate when cured while standing is the flow resistance of the resin. Was evaluated. The evaluation was judged based on the following criteria. The results are shown in Table 1.
Very good (◎): The amount of resin remaining on the concrete plate is 80% or more of the coating amount Good (○): The amount of resin remaining on the concrete plate is 40% or more and less than 80% of the coating amount Defective (×): Concrete plate The amount of resin remaining in the concrete is less than 40% of the applied amount.

[Curing characteristics (23 ° C)]
A sample for measuring curing characteristics at 23 ° C. was prepared as follows.
To 100 parts by mass of the resin composition of each example, 3 parts by mass of Niper NS was added as a curing agent and mixed sufficiently to obtain a resin composition containing a curing agent.

(Gelification time)
In an environment-variable room with a room temperature of 23 ° C. and a humidity of 50%, 50 g of the above-mentioned resin composition containing a curing agent was put into a 100 ml polypropylene cup, and the time from the addition of the curing agent until the resin became less fluid was measured. That time was defined as the gelation time.
(Drying time)
The resin composition containing a curing agent was coated on a polyethylene terephthalate film to a thickness of 1 mm in an environment-variable room having a room temperature of 23 ° C. and a humidity of 50%. After that, the time until the coating film was dried was measured, and that time was defined as the drying time. The drying of the coating film was completed when the gauze did not stick to the coating film when the gauze was brought into contact with the surface of the obtained coating film.

[Curing characteristics (0 ° C)]
A sample for measuring curing characteristics at 0 ° C. was prepared as follows.
With respect to 100 parts by mass of the resin composition of each example, 1 part by mass of AC-102 (product name: Acricillap AC-102, manufactured by Ryoko Co., Ltd.) (hereinafter abbreviated as "AC-102") as a curing accelerator, 6 parts by mass of Niper NS was added as a curing agent and mixed sufficiently to obtain a resin composition containing a curing agent.

(Gelification time)
In a constant temperature and humidity chamber controlled at 0 ° C., 50 g of the resin composition containing the curing agent was put into a 100 ml polypropylene cup, and the time from the addition of the curing agent until the resin became less fluid was measured, and the time was measured. Was defined as the gelation time.

(Drying time)
The resin composition containing a curing agent was coated on a polyethylene terephthalate film to a thickness of 1 mm in a constant temperature and humidity chamber controlled at 0 ° C. After that, the time until the coating film was dried was measured, and that time was defined as the drying time. The drying of the coating film was completed when the gauze did not stick to the coating film when the gauze was brought into contact with the surface of the obtained coating film.

<Paint evaluation>
3 parts by mass of Niper NS was added to 100 parts by mass of the obtained coating layer resin composition S-1; and mixed, and a dense-grained asphalt plate (size: 300 × 300 × 50 mm, manufactured by Daiyu Construction Co., Ltd.) was used as a base material. It was raked to a coating thickness of 1.9 mm. Immediately, 600 g of an aggregate for non-slip (manufactured by Mishu Kosan Co., Ltd., Cerasand A 1 grain, particle size 2 to 3.3 mm) was sprayed, and after hardening, excess aggregate was removed to prepare a test piece.
The following tests and evaluations were performed on the test pieces obtained in each Example and Comparative Example.
Each of the coating layers was applied, and the surface condition after 60 minutes was evaluated according to the following criteria. The results are shown in Table 2.
(Evaluation method)
◯: No peeling is observed between the asphalt plate and the coating layer due to curing shrinkage.
X: Peeling is observed between the asphalt plate and the coating layer due to curing shrinkage.

The abbreviations in Table 1 are as follows.
MMA: Methyl Methacrylate 2-EHA: 2-Ethylhexyl Acrylate PDE-150: Triethylene Glycol Dimethacrylate (manufactured by NOF CORPORATION)
PDP-400N: Polypropylene glycol dimethacrylate (manufactured by NOF CORPORATION)
New Frontier BPE-10: New Frontier BPE-10 (manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.)
P-1: MMA / n-BMA = 60/40 copolymer Tg66 ° C. Mw: 41,000
P-2: MMA / n-BMA = 40/60 copolymer Tg50 ° C. Mw: 60,000
P-3: MMA / n-BMA = 60/40 copolymer Tg66 ° C. Mw: 160,000
ADEKA SIZER P300: Polyester plasticizer (manufactured by ADEKA Corporation)
Toyoparax 150, A50: Plasticizer Chlorinated paraffin (manufactured by Tosoh Corporation)
Vinylizer 85, 105: Phthalate-based plasticizer (manufactured by Kao Corporation)
ATBC: Plasticizer Tributyl Acetylcitrate P-115, P-130, P-150, HNP-9: Paraffin Wax (manufactured by Nippon Seiro Co., Ltd.)
DMPT: N, N-dimethyl-p-toluidine DIPT: N, N-di (2-hydrokipropyl) -p-toluidine PTEO: N, N-di (2-hydroxyethyl) -p-toluidine JF-77: UV Absorbent (manufactured by Johoku Chemical Industry Co., Ltd.)
BHT: 2,6-di-t-butyl-4-methylphenol BYK-1752: Defoamer (manufactured by Big Chemie Japan Co., Ltd.)
HQ: Hydroquinone BYK-410: Shaker (manufactured by Big Chemie Japan Co., Ltd.)

[Example 5]
3 parts by mass of Niper NS was added to 100 parts by mass of the obtained coating layer resin composition S-1; and mixed, and a dense-grained asphalt plate (size: 300 × 300 × 50 mm, manufactured by Daiyu Construction Co., Ltd.) was used as a base material. It was raked to a coating thickness of 1.9 mm. Immediately, 600 g of an aggregate for non-slip (manufactured by Mishu Kosan Co., Ltd., Cerasand A 1 grain, particle size 2 to 3.3 mm) was sprayed, and after hardening, excess aggregate was removed to prepare a test piece.
The following tests and evaluations were performed on the test pieces obtained in each Example and Comparative Example.

<Standing test>
Using a mixture stationary tester (manufactured by Intesco Co., Ltd.), a stationary test was performed under the following conditions using the test pieces obtained in Examples and Comparative Examples, and the amount of aggregate detachment was measured. Evaluation was performed based on the criteria. The results are shown in Table 2.
(Test conditions)
Installed automobile tires: 14-inch radial tires for passenger cars Specimen drive system: Specimen repetition angle: ± 30 °, repetition speed: 6 rpm
Load capacity: 3kN
Measurement temperature 20 ° C
Number of stationary cuts: 20 round trips (evaluation method)
Aggregate detachment amount ○: 2 g or less Δ: 3 to 5 g ×: 6 g or more

<Labeling test>
Using a labeling tester (manufactured by Nikken Corporation), using each test piece obtained in Examples and Comparative Examples, perform a labeling test under the following conditions, measure the amount of aggregate detachment, and evaluate according to the following criteria. Was done.
(Test conditions)
Specimen drive method: Rotation speed: 70 rpm, Rotation speed: 100 times Load capacity: Approximately 25 kg Rubber ring used Rubber hardness 60
Measurement temperature 20 ° C
(Evaluation method)
Aggregate detachment amount ○: 2 g or less Δ: 3 to 5 g ×: 6 g or more

[Example 9]
When further providing a protective layer, the test piece prepared in Example 5 was mixed with 100 parts of the resin composition for protective layer Acricillap XD-523; 100 parts of Niper NS, and mixed with a wool roller (manufactured by Otsuka Brush Manufacturing Co., Ltd.). A test piece was prepared by coating with a coating roller) so as to have a coating thickness of 0.4 mm and curing the coating.

[Examples 6 to 8, Comparative Examples 6 to 10]
Test pieces were obtained in the same manner as in Example 5, except that the configurations shown in Table 2 were used.

[Example 10]
Same as Example 5 except that the coating thickness of the coating layer was 1.1 mm, the anti-slip aggregate was manufactured by Mishu Kosan Co., Ltd., and 400 g of Cerasand B grains (particle size 0.5 to 1 mm) was sprayed. To prepare a test piece.

[Example 11]
A test piece was prepared in the same manner as in Example 5 except that the coating thickness of the coating layer was 3 mm, the non-slip aggregate was manufactured by Mishu Kosan Co., Ltd., and 800 g of Cerasand A was sprayed.

As described above, the resin compositions produced in Examples 1 to 4 have excellent coating workability, excellent flow resistance, and good curability in coating evaluation.
Further, the coating layers prepared in Examples 5 to 11 using the resin compositions prepared in Examples 1 to 4 had a highly durable coating layer with a small amount of aggregate detachment.
On the other hand, the resin compositions prepared in Comparative Examples 1 to 4 have a low TI value, and the resin compositions prepared in Comparative Examples 4 and 5 have a low tensile elongation at break. Therefore, the coating layers prepared in Comparative Examples 6 to 8 using the resin compositions prepared in Comparative Examples 1 to 3 had a large amount of aggregate detachment. Further, Comparative Examples 9 and 10 using the resin compositions prepared in Comparative Examples 4 and 5 were not evaluated because the coating layer was partially peeled off from the asphalt plate.

The coating layer formed by the resin composition of the present invention is useful for civil engineering and construction applications such as covering floor surfaces, wall surfaces, road pavement surfaces, etc., and is particularly excellent in aggregate grip and durability. , Optimal for non-slip construction method.
Specifically, it can be installed in a bus lane, in front of a pedestrian crossing, a service area or parking area of an expressway, a curve, or the like, and can be used to ensure safety and visibility.

Claims (12)

A resin composition used for forming a coating layer for immobilizing aggregate on the surface of at least a part of a structure.
The TI value (thixotropic index) of the resin composition at 23 ° C. determined by the measuring method specified in JIS-K6833-1: 2008 is 1.5 or more.
A resin composition having a tensile elongation at break of 40% or more measured under the following measurement conditions according to the measurement method specified in JIS-K6911: 1995.
(Measurement condition)
A curing agent-containing resin composition is produced by adding 3 parts by mass of a curing agent (product name "Niper NS", manufactured by NOF CORPORATION, benzoyl peroxide purity 40% product) to 100 parts by mass of the resin composition. ..
Immediately in an environment of 23 ° C. and 50% humidity, the curing agent-containing resin composition was poured into a mold in the shape of a tensile test piece described in JIS-K6911: 1995 at a weight of 6 kg / m ² and cured over 2 hours. , Manufacture plate-shaped tensile test pieces. The test piece is cured in an environment of 23 ° C. and 50% humidity, and the tensile elongation at break is measured 7 days after the hardener-containing resin composition is produced. The resin composition according to claim 1, wherein the viscosity measured by a Brookfield type viscometer BM type specified in JIS-Z8803: 2011 at 23 ° C. is 200 to 1,500 mPa · s. After the test piece is manufactured, it is cured in an environment of 23 ° C. and 50% humidity under the measurement conditions according to the measurement method specified in JIS-K6911: 1995 to produce a curing agent-containing resin composition. The resin composition according to claim 1 or 2, wherein the tensile elongation at break measured after 3 hours is 40% or more. After the test piece is produced, it is cured in an environment of 23 ° C. and 50% humidity under the measurement conditions according to the measurement method specified in JIS-K6911: 1995 to produce a curing agent-containing resin composition. The resin composition according to any one of claims 1 to 3, wherein the tensile strength measured after 7 days is 6 N / mm ² or more. After the test piece is produced, it is cured in an environment of 23 ° C. and 50% humidity under the measurement conditions according to the measurement method specified in JIS-K6911: 1995 to produce a curing agent-containing resin composition. The resin composition according to claim 4, wherein the tensile strength measured after 3 hours is 50% or more of the tensile strength measured 7 days after the production of the test piece. The resin composition according to any one of claims 1 to 5, which comprises a monomer (A) having an (meth) acryloyl group. Claims 1 to 6 include a monomer (A) having a (meth) acryloyl group and at least one polymer (B) selected from an acrylic polymer and a polymer having a (meth) acryloyl group. The resin composition according to any one of the above. A structure with an aggregate layer
The aggregate layer is a structure containing the resin composition according to any one of claims 1 to 7 and an aggregate. The structure according to claim 8, which has a protective layer on the surface of the aggregate layer. A step of coating at least a part of the surface of a structure with a curing agent-containing resin composition obtained by blending a curing agent with the resin composition according to any one of claims 1 to 7 to form a coating layer.
The process of placing aggregate on the coating layer and
A method for producing a structure having an aggregate layer, comprising a step of curing the coating layer to form an aggregate layer to which the aggregate is fixed. The method for manufacturing a structure according to claim 10, wherein the thickness of the coating layer before placing the aggregate is 1 mm or more and 5 mm or less. The method for producing a structure according to claim 10 or 11, wherein a protective layer is formed on the surface of the aggregate layer after the aggregate layer is formed.