JPH11286633A - Resin composition for coating covering plate, coated covering plate, and method for coating covering plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a composition which can be firmly adhered to the surface of a covering plate to give a highly durable covering plate by mixing a thermosetting resin with microparticles of a polymer having a specified glass transition point. SOLUTION: This composition comprises a thermosetting resin, desirably, a radically curable thermosetting resin, more desirably, at least one member selected among unsaturated polyester, vinyl ester, urethane (meth)acrylate, and ester (meth)acrylate resins and microparticles made of a polymer having a glass transition point of 20 deg.C of below and desirably having a crosslinkage, and/or having a mean particle diameter of 100 μm or below and/or being (meth) acrylic ester polymer microparticles. It is desirable that the polymer microparticles are ones in the form of a core/shell structure in which the core phase is a microparticulate polymer having a glass transition point of 20 deg.C or below, and the shell phase is a polymer having a glass transition point of above 20 deg.C.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a resin composition for coating a lining plate, a coated lining plate, and a method for coating a lining plate. More specifically, a resin composition for coating a lining board capable of non-slip pavement having high durability in which abrasion and peeling of a coating film do not occur for a long time even in a place with a large traffic volume, a coated lining board, and The present invention relates to a method for coating a lining plate.

[0002]

2. Description of the Related Art In the construction of subways, underground shopping malls, and the construction of communal trenches, a lining plate is laid at a location where a road is excavated to provide traffic for cars and people. In particular, a steel lining plate is slippery, and a non-slip pavement is often used on a surface thereof for the purpose of preventing a vehicle or a person from slipping.

[0003] As a non-slip pavement, a method of coating the surface of a lining plate with a coating film containing an aggregate and a resin as a binder thereof, and forming an uneven structure by projecting a part of the aggregate from the surface of the coating film. Is common (Jun 50-30)
193, JP-A-8-231888, etc.). As a resin used for such a coating film, a thermosetting resin such as an epoxy resin, a polyurethane resin, and an acrylic resin is often used.

[0004]

However, it is generally known that the cured products of these thermosetting resins have low toughness, and coatings using these resins are generally brittle, and are not suitable for high-speed vehicles or vehicles. There is a problem that the vehicle is easily broken by passing a heavy vehicle or the like. Therefore, an object of the present invention is to provide a highly durable resin composition for coating a lining plate using a toughened thermosetting resin, a coated lining plate, and a method of coating the lining plate. It is in.

[0005]

Means for Solving the Problems In order to solve the above problems, the present invention provides the following configurations. (1) A resin composition for coating a lining board for fixing an aggregate to a lining board surface, the thermosetting resin and at least one of glass transition points containing polymer fine particles having a temperature of 20 ° C. or less. A resin composition for coating a lining plate.

(2) The resin composition for covering a lining plate according to the above (1), wherein the polymer fine particles have a crosslinked structure. (3) The resin composition for coating a lining board according to the above (1) or (2), wherein the average particle diameter of the polymer fine particles is 100 μm or less. (4) The resin composition according to any one of (1) to (3), wherein the polymer fine particles are (meth) acrylate-based polymer fine particles.

(5) The polymer fine particles having a glass transition point of 20 ° C. or less are used as a core phase, and the polymer fine particles having a glass transition point of 20 ° C. or less are used as a core phase.
The resin composition for coating a lining board according to any one of the above (1) to (4), comprising a core / shell type fine particle having a polymer exceeding 0 ° C. as a shell phase. (6) The resin composition according to any one of (1) to (5) above, wherein the thermosetting resin is a radical-curing thermosetting resin.

(7) The radical-curable thermosetting resin is:
The resin composition for coating a lining board according to the above (6), which is at least one resin selected from the group consisting of an unsaturated polyester resin, a vinyl ester resin, a urethane (meth) acrylate resin, and an ester (meth) acrylate resin. (8) A covered board whose surface is covered with the resin composition for covering a covered board according to any one of (1) to (7) and an aggregate.

(9) A method of coating the surface of a lining plate with the resin composition for coating a lining plate and the aggregate according to any one of (1) to (7).

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The resin composition for coating a backing plate of the present invention contains a thermosetting resin and polymer fine particles having a glass transition point of 20 ° C. or lower. The fact that the glass transition point of the polymer fine particles is 20 ° C. or lower means that the polymer particles are relatively soft, and the toughness of the thermosetting resin after three-dimensional curing can be improved. The glass transition point of the polymer fine particles is preferably 20 ° C. or lower, more preferably 0 ° C. or lower. If the glass transition point exceeds 20 ° C., the fine polymer particles themselves become hard, and the effect of improving the toughness in the cured product is reduced.

When the polymer fine particles are in the form of fine particles, the polymer fine particles can be uniformly dispersed throughout the resin composition with a relatively small amount, and the effect of improving the toughness can be exhibited.
The average particle size of the polymer fine particles is preferably 100 μm or less, more preferably 0.1 to 50 μm, and still more preferably 0.2 to 20 μm. Since the polymer phase having a low glass transition point is unevenly distributed in the resin composition as the average particle size increases, the glass transition point of the resin composition as a whole decreases and the mechanical strength is lost, or the toughness is improved. Is not preferred because the amount of addition increases. on the other hand,
When the average particle size is smaller than 0.1 μm, the viscosity of the resin composition may be excessively increased, and the workability of the coating work may be reduced. Further, the maximum particle size of the polymer fine particles is preferably 1 mm or less, more preferably 500 μm or less. When the maximum particle size of the polymer fine particles exceeds the above range, a discontinuous phase without any resin is formed after coating, and rainwater or the like permeates therefrom, and the adhesion between the coating layer and the substrate is lowered, which is not preferable. .

It is preferable that a crosslinked structure is introduced into the polymer fine particles. When a polymerizable monomer is contained in the resin composition and the crosslinked structure is not introduced into the polymer fine particles, the fine particles dissolve in the monomer and the resin composition is cured without the presence of a domain having a low glass transition point. Therefore, the effect of adding the polymer fine particles may be lost. If a crosslinked structure is introduced into the polymer particles, the dissolution of the polymer particles in the resin can be prevented,
There is no such problem as described above.

The type of the polymer constituting the polymer fine particles is not particularly limited. Specific examples that can satisfy the above conditions (including those that are satisfied by selecting monomers) include natural rubber; butadiene rubber (polybutadiene, NBR, SBR, etc.), isoprene rubber (IR, butyl rubber, etc.) , Synthetic rubber such as chloroprene rubber, rubber modified with an acid group such as a carboxyl group, or vulcanized product thereof; polyorganosiloxane; linear or branched aliphatic or alicyclic alcohol having 1 to 18 carbon atoms (Meth) acrylate-based polymer based on (meth) acrylate such as esterified product of (meth) acrylic acid [including copolymer of (meth) acrylate and "other monomer"] And the like. Among them, (meth) acrylate polymers are preferred.

The (meth) acrylate constituting the (meth) acrylate-based polymer is methyl,
A linear or branched aliphatic or alicyclic alkyl alcohol having 1 to 18 carbon atoms such as ethyl, propyl, isopropyl, butyl, isobutyl, octyl, 2-ethylhexyl, lauryl, stearyl or cyclohexyl, and (meth) (Meth) acrylic acid esters which are ester compounds with acrylic acid;
Hydroxy group-containing unsaturated monomers such as hydroxyethyl (meth) acrylate, hydroxypropyl (meth) acrylate, monoester of (meth) acrylic acid and polypropylene glycol or polyethylene glycol, glycidyl (meth) acrylate Epoxy group-containing monomer of (meth) acryloylaziridine, (meth)
Examples thereof include aziridinyl group-containing monomers such as acryloyloxyethylaziridine, polyfunctional (meth) acrylates, and the like. These may be used alone, or two or more of them may be used in combination for copolymerization.

The "other monomer" for constituting the (meth) acrylic ester polymer includes, for example, styrene monomers such as styrene, vinyltoluene and α-methylstyrene, (meth) acrylic acid, crotonic acid, Known unsaturated carboxylic acids such as maleic acid and fumaric acid,
Acid group-containing monomers such as ethyl (meth) acrylate 2-sulfonate, styrene sulfonic acid and vinyl sulfonic acid, and oxazolinyl group-containing monomers such as vinyl acetate and 2-isopropenyl-2-oxazoline can be used. These monomers are preferably used by adjusting the glass transition point of the polymer constituting the fine particles to 20 ° C. or lower.

In order to introduce a crosslinked structure into polymer fine particles, a polyfunctional (meth) acrylic ester which is an ester of a polyhydroxy compound such as glycol, trimethylolpropane, pentaerythritol and (meth) acrylic acid, ) Allyl acrylate, divinylbenzene,
A method of copolymerizing a polyfunctional monomer such as diallyl phthalate with a monomer for constituting the above (meth) acrylate polymer, an epoxy group-containing monomer such as glycidyl (meth) acrylate, (meth) acryloylaziridine, A monomer having reactivity with an acid group such as an aziridinyl group-containing monomer such as (meth) acryloyloxyethylaziridine or an oxazolinyl group-containing monomer such as 2-isopropenyl-2-oxazoline is used as an unsaturated carboxylic acid or unsaturated sulfonic acid. And the like, and a method of causing a cross-linking reaction with an acid group in the polymer fine particles by copolymerization with the above can be adopted. In addition, it is preferable to copolymerize a monomer having reactivity with an acid group in order to increase the toughness improving effect. Since a monomer having reactivity with an acid group has a function of giving a reactivity with a polymer emulsifier to be described later to the polymer fine particles, the interfacial bonding force between the thermosetting resin and the polymer fine particles increases. In order to ensure the reactivity between the polymer emulsifier and the polymer fine particles, when the acid group in the polymer fine particles is subjected to a cross-linking reaction, the functional group of the monomer having reactivity with the acid group is equivalent to the acid group in the acid group-containing monomer. It is preferable to appropriately adjust the amount to be used as described above.

In order to obtain polymer fine particles having at least one of the glass transition points of 20 ° C. or less, these cross-linking structure-introducing monomers are used in an amount of 0.5 to 10% by weight based on the total monomer components.
Is preferably copolymerized at a ratio of In the case of a polymer fine particle having a very dense crosslinked structure, the glass transition point may exceed 20 ° C., or may not substantially exhibit the glass transition point, and the effect of improving the toughness in the cured product may not be exhibited.

Methods for obtaining polymer fine particles include emulsion polymerization, suspension polymerization, reversed-phase suspension polymerization, precipitation polymerization and the like. As described later, thermosetting resins and / or
Alternatively, since it is preferable to add the polymer fine particles as an emulsion to the raw material in producing the resin composition of the present invention, it is most preferable to employ emulsion polymerization that can obtain the polymer fine particles in an emulsion. Although it is possible to produce only the polymer by another polymerization method and then to stir and disperse it in an aqueous medium to form an emulsion, the process becomes complicated. Emulsion polymerization also has the advantage that polymer fine particles having an average particle size of 100 μm or less can be easily obtained. The emulsion polymerization method is not particularly limited, and any of a batch polymerization method, a monomer dropping method, a pre-emulsion method, a seed polymerization method, a multi-stage polymerization method (core-shell), and the like can be employed.

Further, as an emulsifier, a terminal alkyl group polymer having an acid value of 200 or more obtained by polymerizing a polymerizable monomer component containing an unsaturated carboxylic acid as an essential component in the presence of an alkyl mercaptan and / or It is preferable to carry out emulsion polymerization of polymer fine particles using a polymer emulsifier comprising a salt. This polymer emulsifier is disclosed in
No. 5,366, specifically, (meta)
A water-soluble or water-dispersible terminal alkyl group-containing polymer having an acid value of 200 or more containing unsaturated carboxylic acids such as acrylic acid, crotonic acid, maleic acid, and fumaric acid and an alkyl mercaptan having 6 to 18 carbon atoms as main components. And / or a salt thereof. In addition to the unsaturated carboxylic acid and the alkyl mercaptan, (meth) acrylate monomers, styrene monomers, (meth) acrylamide monomers, and the like can be used, and the amount of alkyl mercaptan is appropriately selected to obtain a molecular weight of 300 to 7000. Are preferred from the viewpoint of emulsifying ability. By using this polymer emulsifier, the dispersibility of the emulsion of polymer fine particles in the thermosetting resin is improved, and foaming is reduced during the dehydration step described later. Further, as a constituent monomer of the polymer fine particles, an epoxy group-containing monomer such as glycidyl (meth) acrylate, which can react with a carboxyl group in the polymer emulsifier, (meth) acryloyl aziridine, (meth) acryloyloxyethyl aziridine, When an aziridinyl group-containing monomer or an oxazolinyl group-containing monomer such as 2-isopropenyl-2-oxazoline is partially used, the polymer fine particles and the emulsifier can be chemically bonded, so that the resin composition of the present invention was cured. Later, adverse effects such as poor moisture resistance and poor chemical resistance caused by the low molecular emulsifier can be prevented as much as possible.

The polymer fine particles having a glass transition point of 20 ° C. or lower may be contained in the resin composition for covering a lining plate in a single form, or may be integrated with a polymer phase having a glass transition point of higher than 20 ° C. It may be contained in the form of a compound. In the integrated product, the portion having a glass transition point of 20 ° C. or lower is preferably 50% by weight or more, more preferably 80% by weight or more. If it is less than 50% by weight, the effect of improving the toughness due to the blending of the polymer fine particles is undesirably reduced.

The polymer fine particles have a glass transition point of 20 ° C.
Examples of the integrated substance with a polymer phase having a glass transition point of not higher than 20 ° C. include core / shell type fine particles having a polymer phase having a glass transition point of 20 ° C. or lower as a core phase and a polymer having a glass transition point of higher than 20 ° C. as a shell phase. be able to. Although the polymer fine particles have a low glass transition point, they tend to aggregate with each other, but by coating the surface with a polymer having a high glass transition point, aggregation can be prevented and dispersibility can be increased.

The core / shell type fine particles may have a two-layer structure of a core phase and a single shell phase, or may be, for example, a soft core, a hard shell, a soft shell and a hard shell from the inside. Multi-core / shell fine particles having a multi-layered structure having a plurality of shell phases as in the structure may be used. Here, “soft” means that the glass transition point is 20 ° C. or less, and “hard” means that the glass transition point exceeds 20 ° C. Among them, those having a soft core / hard shell structure are suitably used in the present invention.

As the shell component, the glass transition point is 20
Polymers exceeding ℃, such as polystyrene, polyacrylonitrile, polymethyl acrylate, homopolymers such as polymethyl methacrylate, alkyl methacrylate,
Copolymers such as alkyl acrylate, methacrylic acid and acrylic acid, or terpolymers such as styrene / acrylonitrile / glycidyl methacrylate, methyl methacrylate / butyl acrylate / glycidyl methacrylate are used. Acrylic acid, methacrylic acid having a functional group reactive with a resin or a curing agent such as a carboxyl group, an epoxy group, a hydroxyl group and an amino group, an amide group,
Itaconic acid, glycidyl methacrylate, methacrylic acid 2
It is also possible to copolymerize unsaturated compounds such as -hydroxyethyl, dimethylaminomethyl methacrylate and methacrylamide. As the shell component, it is preferable to use a polymer having no reactive functional group, such as polymethyl methacrylate, because it tends to be more excellent in dispersibility in a thermosetting resin.

The core / shell type fine particles have a content of the core component (polymer fine particles having a glass transition point of 20 ° C. or lower) of 50%.
It is preferable that the content of the shell component is in the range of 10 to 50% by weight at 90 to 90% by weight. Core component content 50
If the content is less than 90% by weight, it may be difficult to obtain a sufficient toughness improving effect. If the content exceeds 90% by weight, it may be difficult to completely cover the core with the shell, and the dispersibility may be insufficient. .

The core / shell type fine particles can be produced by a known method, for example, as described in US Pat. No. 4,419,496, European Patent 45,357, and JP-A-55-94917.
Can be manufactured by the method disclosed in Japanese Patent Application Publication No. Commercial products can also be used. Commercially available core / shell type fine particles include, for example, “Kureha Paraloid” EXL-2655 (made by Kureha Chemical Industry) comprising a butadiene / alkyl methacrylate / styrene copolymer.
"Staphyloid" AC-3355, TR-21 comprising an acrylate / methacrylate copolymer
22 (manufactured by Takeda Pharmaceutical Co., Ltd.), “PARALOID” EX made of butyl acrylate / methyl methacrylate copolymer
L-2611, EXL-3387 (Rohm & Hass
And the like).

In the present invention, the glass transition point is 20 ° C.
Along with the following polymer fine particles, polymer fine particles having a glass transition point exceeding 20 ° C. may be used in combination within a range not to impair the effects of the present invention. As the preferred compounding ratio of the polymer fine particles in the resin composition for covering a lining plate of the present invention,
The polymer fine particles are 1 to 100 parts by weight of the thermosetting resin.
It is in the range of 100 parts by weight, more preferably 1 to 50 parts by weight, further preferably 2 to 20 parts by weight, particularly preferably 5 to 7 parts by weight. When the amount of the polymer fine particles is too small, the effect of the present invention is hardly obtained, and when the amount is too large, not only is it not economical, but also the amount of the thermosetting resin is relatively reduced, and the glass as the resin composition as a whole is It is not preferable because the transition point is lowered and the mechanical strength is lost.

As the thermosetting resin used in the resin composition for covering a backing plate of the present invention, an epoxy resin, a polyurethane resin, or the like can be used, but unsaturated polyester resin, vinyl ester resin, urethane ( It is preferable to use a radical-curable thermosetting resin such as a (meth) acrylate resin and an ester (meth) acrylate resin. Since these resins are liquid resins obtained by diluting a radical polymerizable unsaturated group-containing oligomer with a radical polymerizable monomer, they are fast-curing, have excellent workability during construction, and have an epoxy resin, a polyurethane resin. This is because they have excellent mechanical properties, corrosion resistance, and heat resistance performance equal to or higher than that of a resin or the like.

The unsaturated polyester resin is not particularly limited. For example, a radical polymerizable unsaturated group-containing oligomer obtained by subjecting a dibasic acid and a polyhydric alcohol to a condensation reaction may be used. It is a liquid resin diluted with a monomer. Specific examples of the dibasic acid used as a raw material of the unsaturated polyester resin include α, β-unsaturated dibasic acids such as maleic acid, maleic anhydride, fumaric acid, itaconic acid, and itaconic anhydride; Acid, phthalic anhydride, halogenated phthalic anhydride, isophthalic acid, terephthalic acid, tetrahydrophthalic acid, tetrahydrophthalic anhydride, hexahydrophthalic acid, hexahydrophthalic anhydride, hexahydroterephthalic acid, hexahydroisophthalic acid, succinic acid, Malonic acid, glutaric acid, adipic acid, sebacic acid, 1,12-
Dodecane diacid, 2,6-naphthalenedicarboxylic acid, 2,
7-naphthalenedicarboxylic acid, 2,3-naphthalenedicarboxylic acid, 2,3-naphthalenedicarboxylic anhydride,
Examples thereof include, but are not particularly limited to, 4,4′-bisphenyldicarboxylic acid and saturated dibasic acids such as dialkyl esters thereof. These dibasic acids are
One type may be used alone, or two or more types may be appropriately used in combination.

Examples of the polyhydric alcohols used as a raw material of the unsaturated polyester resin include ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, polypropylene glycol, and 2-methyl glycol. -1,3-propanediol,
1,3-butanediol, an adduct of bisphenol A and propylene oxide or ethylene oxide,
3,4-tetrahydroxybutane, glycerin, trimethylolpropane, 1,3-propanediol, 1,2
-Cyclohexane glycol, 1,3-cyclohexane glycol, 1,4-cyclohexane glycol, para-xylene glycol, bicyclohexyl-4,4'-diol, 2,6-decalin glycol, 2,7-decalin glycol and the like. However, there is no particular limitation. One of these polyhydric alcohols may be used alone, or two or more of them may be used as a mixture.
If necessary, a dicyclopentadiene-based compound may be incorporated in the resin skeleton.

The vinyl ester resin is not particularly limited. For example, a radical polymerizable unsaturated group which can be obtained by reacting an epoxy compound with an unsaturated monobasic acid using an esterification catalyst. It is a liquid resin obtained by diluting a contained oligomer with a radical polymerizable monomer. The epoxy compound used as a raw material of the vinyl ester resin is not particularly limited as long as it is a compound having at least one epoxy group in a molecule. Specifically, bisphenol A, bisphenol F Type glycidyl ether type epoxy resin obtained by a condensation reaction of a bisphenol such as phenol, bisphenol S and epihalohydrin; novolak obtained by a condensation reaction of novolak which is a condensate of phenol, cresol, bisphenol with formalin and epihalohydrin Type glycidyl ether type epoxy resin; Glycidyl ester type epoxy resin obtained by condensation reaction of tetrahydrophthalic acid, hexahydrophthalic acid, benzoic acid and epihalohydrin; Water-added bisphenol and glycol Glycidyl ether type epoxy resins obtained by condensation reaction of a kind and epihalohydrin; hydantoin and amine-containing glycidyl ether obtained by condensation reaction between cyanuric acid and epihalohydrin epoxy resins. Further, a compound having an epoxy group in a molecule by an addition reaction of these epoxy resins with polybasic acids and / or bisphenols may be used. One of these epoxy compounds may be used alone, or two or more of them may be used as a mixture.

The unsaturated monobasic acid used as a raw material for the vinyl ester resin is not particularly limited, but specific examples include acrylic acid, methacrylic acid, crotonic acid and the like. Further, a half ester such as maleic acid or itaconic acid may be used. Further, these compounds may be used in combination with polycarboxylic acids such as fumaric acid, itaconic acid and citraconic acid, saturated monocarboxylic acids such as acetic acid, propionic acid, lauric acid and palmitic acid, and saturated polycarboxylic acids such as phthalic acid. An acid or an anhydride thereof, or a compound such as a saturated or unsaturated alkyd having a terminal carboxyl group may be used in combination. One of these unsaturated monobasic acids may be used alone, or two or more of them may be used as a mixture.

Specific examples of the esterification catalyst include tertiary amines such as dimethylbenzylamine and tributylamine; quaternary ammonium salts such as trimethylbenzylammonium chloride; and inorganic salts such as lithium chloride and chromium chloride. Imidazole compounds such as 2-ethyl-4-methylimidazole; tetramethylphosphonium chloride, diethylphenylpropylphosphonium chloride, triethylphenylphosphonium chloride, benzyltriethylphenylphosphonium chloride, dibenzylethylmethylphospho Phosphonium salts such as ammonium chloride, benzylmethyldiphenylphosphonium chloride and tetraphenylphosphonium bromide; secondary amines; tetrabutyl urea;
Examples include, but are not limited to, triphenylphosphine; tolylphosphine; triphenylstibine, and the like. One of these esterification catalysts may be used, or two or more of them may be used as a mixture.

The urethane (meth) acrylate resin is not particularly limited. For example, after a polyisocyanate is reacted with a polyhydroxy compound or a polyhydric alcohol, a hydroxyl group-containing (meth) acryl compound and A liquid resin obtained by diluting a radical polymerizable unsaturated group-containing oligomer obtained by reacting a hydroxyl group-containing allyl ether compound with a radical polymerizable monomer, if necessary. Further, after the hydroxyl group-containing (meth) acrylic compound is reacted with the polyhydroxy compound or the polyhydric alcohol, a polyisocyanate may be further reacted.

Examples of the polyisocyanate used as a raw material of the urethane (meth) acrylate resin include 2,4-tolylene diisocyanate and its isomers, diphenylmethane diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, and xylylene diisocyanate. , Hydrogenated xylylene diisocyanate, dicyclohexyl methane diisocyanate, tolidine diisocyanate, naphthalene diisocyanate, triphenylmethane triisocyanate, Vernock D-750, crisbon NX (trade name; manufactured by Dainippon Ink and Chemicals, Inc.), Tesmodule L (trade name) Sumitomo Bayer), Coronate L (trade name, manufactured by Nippon Polyurethane), Takenate D102 (trade name, manufactured by Takeda Pharmaceutical Co.), Iso Over preparative 143L; but (trade name of Mitsubishi Chemical Industries, Ltd.), but it is not particularly limited. One of these polyisocyanates may be used alone, or two or more of them may be used as a mixture.

The polyhydroxy compound used as a raw material of the urethane (meth) acrylate resin includes:
For example, polyester polyols, polyether polyols and the like can be mentioned. Specifically, glycerin-ethylene oxide adduct, glycerin-propylene oxide adduct, glycerin-tetrahydrofuran adduct, glycerin-ethylene oxide-propylene oxide adduct, trimethylolpropane- Ethylene oxide adduct, trimethylolpropane-propylene oxide adduct, trimethylolpropane-tetrahydrofuran adduct, trimethylolpropane-ethylene oxide-propylene oxide adduct, pentaerythritol-ethylene oxide adduct, pentaerythritol-propylene oxide adduct, pentaerythritol- With tetrahydrofuran adduct, pentaerythritol-ethylene oxide-propylene oxide Products, dipentaerythritol-ethylene oxide adduct, dipentaerythritol-propylene oxide adduct, dipentaerythritol-tetrahydrofuran adduct, dipentaerythritol-ethylene oxide-propylene oxide adduct, and the like, but are not particularly limited. . One of these polyhydroxy compounds may be used alone, or two or more of them may be used as a mixture.

The polyhydric alcohol used as a raw material of the urethane (meth) acrylate resin includes, specifically, ethylene glycol, diethylene glycol,
Triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, polypropylene glycol, 2-methyl-1,3-propanediol, 1,3-butanediol, adduct of bisphenol A with propylene oxide or ethylene oxide, 1,2 , 3,4-tetrahydroxybutane, glycerin, trimethylolpropane, 1,3-propanediol, 1,2-cyclohexaneglycol, 1,3-cyclohexaneglycol, 1,4-cyclohexaneglycol, para-xylene glycol, bicyclohexyl-
4,4′-diol, 2,6-decalin glycol,
Examples thereof include 2,7-decalin glycol, but are not particularly limited. One of these polyhydric alcohols may be used alone, or two or more of them may be used as a mixture.

The hydroxyl group-containing (meth) acrylic compound used as a raw material of the urethane (meth) acrylate resin is not particularly limited, but a hydroxyl group-containing (meth) acrylic ester is preferred. For example, 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 3
-Hydroxybutyl (meth) acrylate, polyethylene glycol mono (meth) acrylate, polypropylene glycol mono (meth) acrylate, di (meth) acrylate of tris (hydroxyethyl) isocyanuric acid, and pentaerythritol tri (meth) acrylate. These hydroxyl group-containing (meth) acrylic compounds may be used singly or as a mixture of two or more.

The hydroxyl group-containing allyl ether compound optionally used as a raw material of the urethane (meth) acrylate resin includes, for example, ethylene glycol monoallyl ether, diethylene glycol monoallyl ether, triethylene glycol monoallyl ether. Ether, polyethylene glycol monoallyl ether, propylene glycol monoallyl ether, dipropylene glycol monoallyl ether, tripropylene glycol monoallyl ether, polypropylene glycol monoallyl ether, 1,2-butylene glycol monoallyl ether, 1,3-butylene glycol Monoallyl ether, hexylene glycol monoallyl ether, octylene glycol monoallyl ether, trimethylolpropane Diallyl ether, glycerol diallyl ether, although pentaerythritol triallyl ether, and the like, but is not particularly limited. These hydroxyl group-containing allyl ether compounds may be used alone or in combination of two or more.

The ester (meth) acrylate resin is not particularly limited, and may be, for example, a radically polymerizable unsaturated resin obtained by reacting a (meth) acrylic compound with an unsaturated or saturated polyester terminal. A liquid resin obtained by diluting a group-containing oligomer with a radical polymerizable monomer. As the raw material of the polyester resin, for example, the same compounds as the compounds exemplified as the raw material of the unsaturated polyester resin can be used.

Specific examples of the (meth) acrylic compound used as a raw material of the ester (meth) acrylate resin include unsaturated glycidyl compounds, unsaturated monobasic acids such as (meth) acrylic acid and glycidyl esters thereof. And the like, but are not particularly limited. One of these (meth) acrylic compounds may be used alone, or two or more of them may be used as a mixture.

The vinyl ester resin, urethane (meth) acrylate resin, unsaturated polyester resin,
The reactive monomer used in the polyester (meth) acrylate resin may be appropriately selected depending on the purpose of use and application, and is not particularly limited. Specifically, styrene, divinylbenzene, Chlorostyrene,
(Meth) acrylic acid ester, diallyl phthalate, vinyl acetate, trimethylolpropane triacrylate and the like can be mentioned. One of these reactive monomers may be used alone, or two or more of them may be used as a mixture.
These reactive monomers may be used as a solvent at the time of resin synthesis, or may be used as a solvent for a high-viscosity resin for adjusting the viscosity.

In the present invention, the glass transition temperature of the thermosetting resin after curing is preferably 60 ° C. or more,
It is more preferable that the temperature is 0 ° C. or higher. Glass transition point is 6
A thermosetting resin having a temperature lower than 0 ° C. is inferior in mechanical properties, corrosion resistance, heat resistance, abrasion resistance and the like of the cured product.
The method for producing the resin composition for covering a lining plate of the present invention is not particularly limited, but the emulsion of the polymer fine particles may be added to the thermosetting resin and / or its raw material at any stage in the production process of the thermosetting resin. A method of adding and then dehydrating is preferred. A method of obtaining polymer fine powder and mixing it with a thermosetting resin or a raw material thereof is also possible, but the steps are complicated because a means for preventing aggregation is required. In other words, according to a method in which an emulsion of polymer fine particles is added to a thermosetting resin and / or a raw material thereof at an optional stage in the process of manufacturing the thermosetting resin and then dehydrated, water is scattered at room temperature. Even polymer particles having a low glass transition point, which has a disadvantage that particles adhere to each other, can be uniformly dispersed in a thermosetting resin. When the thermosetting resin is of a radical curing type, the polymerization reactivity (double bond) can be ensured. During the dispersing process,
The thermosetting resin and / or the raw material are heated to a low viscosity, and an emulsion of polymer fine particles is added thereto and stirred, so that O / W / O (oil in water) is obtained.
In oil) state, that is, the emulsion droplets are uniformly dispersed in the continuous phase of the thermosetting resin and / or the raw material thereof, and the polymer fine particles are uniformly dispersed in the emulsion droplets. Therefore, after the dehydration step, a resin composition in which the polymer fine particles are uniformly dispersed in the thermosetting resin can be obtained.

The resin composition for coating a backing plate of the present invention contains, in addition to the thermosetting resin and the polymer fine particles, a curing agent, a curing accelerator, a filler, an ultraviolet absorber, a pigment, a thickener, Various additives such as an agent, an antioxidant, a plasticizer, a flame retardant, a stabilizer, and a reinforcing agent may be contained. The amount of these additives used is not particularly limited. The composition for coating a lining plate of the present invention is for fixing an aggregate to the surface of a lining plate. As the aggregate used in the present invention, known materials such as silica sand, aluminum oxide, silicon carbide, silica, river sand, and silica powder can be used. Among these, silica sand and silica powder are particularly preferred. One of these aggregates may be used alone, or two or more of them may be used as a mixture. Since the thickness of the resin composition for covering a lining plate is usually about 2 to 10 mm, the particle size of the aggregate is preferably about 1 to 5 mm in order to form an appropriate uneven shape on the surface of the coating film. . The amount of the aggregate is 20 per 100 parts by weight of the resin.
It is about 0 to 500 parts by weight.

The method for coating the surface of the lining plate with the aggregate using the resin composition for coating a lining plate of the present invention is not particularly limited. For example, on a coating film obtained by applying a resin composition for covering a lining plate, or by hand using a scoop or the like, or excessively spread aggregate using a machine such as a spreader,
Subsequently, a method of recovering excess aggregate after the coating is cured, a method of kneading the aggregate with a resin composition for covering a lining board in advance, and applying and curing the composition are exemplified. The above method is preferable because the non-slip effect is greater when the surface of the aggregate is not wetted by the resin.

Examples of the backing plate to which the resin composition for coating a backing plate of the present invention is applied include a steel backing plate obtained by processing a steel material such as an H-shaped steel, a channel steel and a steel plate, and a surface obtained by processing a steel material. As a strength member, concrete-coated steel-concrete lining boards coated with concrete, reinforced concrete, concrete lining boards such as prestressed concrete, etc. are exemplified, but the present invention is particularly effective when steel lining boards are used. .

[0046]

The present invention will be described in more detail with reference to the following Examples, but it should not be construed that the invention is limited thereto. In the examples, “parts” and “%” are unless otherwise specified.
The terms “parts by weight” and “% by weight” are respectively represented.

In the following, the measurement of the glass transition point of the cured product of the thermosetting resin and the polymer fine particles was performed as follows. <Measurement of glass transition point of cured product of thermosetting resin> TMA
(Thermal Mechanical Analyzer), the temperature was raised at a constant rate under a constant load, the amount of thermal expansion was measured, and the inflection point was taken as the glass transition point. As the device, TA-50WS manufactured by Shimadzu Corporation was used, and the sampling interval was 1.
0s, heating rate 2.0 ° C / min, load condition 1.0g
The measurement was performed under the condition of (constant load). <Measurement of Glass Transition Temperature of Polymer Fine Particles> The temperature of the polymer was raised at a constant rate by DSC (differential scanning calorimeter), the heat balance was observed, and the maximum point of the exothermic peak was defined as the glass transition point. The equipment is DS manufactured by PERKIN-ELMER
1. Using C7, sampling interval 1.0 s, heating rate 2.
The measurement was performed under the condition of 0 ° C./min. <Measurement of Average Particle Size of Polymer Fine Particles> 100 mg of an emulsion of polymer fine particles was diluted with 5 g of deionized water and subjected to measurement. The equipment is NIC manufactured by Nozaki Sangyo Co., Ltd.
OMP A370 / Autodilute Submicron Particle Si
zer was used. [Reference Example (Production of Emulsifier)] 180 parts of isopropyl alcohol was charged into a flask equipped with a stirrer, a reflux condenser, a nitrogen inlet tube, a thermometer, and a dropping funnel, and heated to 81 ° C. while blowing nitrogen to remove isopropyl alcohol. 10
Reflux for minutes.

Next, methacrylic acid 70 previously prepared
Parts, 91 parts of Blenmer PE-200 (polyethylene glycol monomethacrylate, manufactured by NOF CORPORATION), n
-17 parts dodecyl mercaptan, and 0.4 AIBN
Parts of the polymerizable monomer mixture was dropped into the flask over 2 hours. After completion of the dropwise addition, the mixture was aged for 1 hour in a reflux state to obtain a solution of a polymer having a terminal alkyl group having a solid content of 49.1%. The acid value of this polymer is 256 mg KOH /
g, number average molecular weight was 2,100. [Synthesis Example 1 (Synthesis of Polymer Fine Particle B-1)] Stirrer,
63 parts of deionized water was charged into a flask equipped with a reflux condenser, a nitrogen inlet tube, a thermometer and a dropping funnel, and the internal temperature was raised to 70 ° C. while gently blowing nitrogen gas.

On the other hand, 4.1 parts of a solution of the polymer having a terminal alkyl group obtained in Reference Example, 0.5% of 28% aqueous ammonia
Parts, 63 parts of deionized water, 28 parts of ethyl acrylate, 58 parts of butyl acrylate, 10 parts of methyl methacrylate, 2 parts of allyl methacrylate, and 2 parts of glycidyl methacrylate were mixed and stirred to completely emulsify. The pre-emulsion was charged into the dropping funnel.

Next, 8 parts of a 5% aqueous solution of 4,4′-azobis (4-cyanopentanoic acid) neutralized with ammonia was poured into the flask, and the pre-emulsion was added from a dropping funnel over 3 hours and 30 minutes. It was dropped. After completion of the dropping, the dropping funnel was washed with 10 parts of deionized water, and the washing liquid was added to the flask. During the addition of the pre-emulsion, the temperature was 7
The temperature was maintained at 0 to 75 ° C., and after completion of the dropwise addition, the mixture was further stirred at the same temperature for 2 hours to terminate the polymerization, and the crosslinked polymer fine particles B-1
Emulsion was obtained.

The polymer had a nonvolatile content of 46.0%, a glass transition temperature of the polymer of -20 ° C. and an average particle size of 0.33 μm.
Met. [Synthesis Example 2 (Synthesis of Polymer Fine Particles B-2)] Stirrer,
219.6 parts of deionized water was charged into a flask equipped with a reflux condenser, a nitrogen inlet tube, a thermometer, and a dropping funnel, and the internal temperature was raised to 60 ° C. while gently blowing nitrogen gas.

On the other hand, 50 parts of 20% Aqualon RN-20 (manufactured by Daiichi Kogyo Seiyaku) prepared in advance, 10 parts of HS-10, 73 parts of deionized water, 24 parts of ethyl acrylate, Butyl acid 188 parts, styrene 17
2 parts, trimethylolpropane trimethacrylate 2
And 2 parts of glycidyl methacrylate were mixed and stirred, and a completely emulsified pre-emulsion was charged into the dropping funnel.

Next, after injecting 40 parts of a 5% aqueous solution of potassium persulfate into the flask, the internal temperature was raised to 70 ° C. in 10 minutes, and then ripened at 70 to 75 ° C. for 30 minutes. After aging, the pre-emulsion was added dropwise over 3 hours. After completion of the addition, the mixture was further stirred at the same temperature for 2 hours to terminate the polymerization, thereby obtaining an emulsion of crosslinked polymer fine particles B-2. This had a nonvolatile content of 44.0%, a glass transition point of the polymer of 0 ° C., and an average particle size of 0.30 μm. [Synthesis Example 3 (Synthesis of Polymer Fine Particles B-3)] Synthesis Example 1
In the same manner as in Synthesis Example 1 except that the monomer composition in the pre-emulsion was changed to 10 parts of butyl acrylate, 85 parts of methyl methacrylate, and 5 parts of glycidyl methacrylate, polymer fine particles B-3 having a nonvolatile content of 46.0% were prepared. An emulsion was synthesized. The glass transition point of the polymer is 81
° C and the average particle size was 0.28 µm. Example 1 (Vinyl ester resin composition V for coating lining board)
Synthesis of E-1)] In a 5 L four-necked flask equipped with a stirrer, a reflux condenser, a gas inlet tube and a thermometer, a bisphenol A type epoxy resin having an epoxy equivalent of 465 (Epototo YD-901, manufactured by Toto Kasei Co., Ltd.) 1836 g, 418 g of a bisphenol A type epoxy resin having an epoxy equivalent of 185 (Araldite GY-250, manufactured by Ciba Geigy), 545 g of methacrylic acid, 15 g of tetrabutylammonium chloride, and 0.75 g of hydroquinone were added. Stir and mix styrene 2200
g was added. Next, 568 g of an emulsion of the crosslinked polymer fine particles B-1 was added, and the temperature was raised to 70 ° C. with stirring, and water and styrene were azeotropically removed to completely remove water. Finally, styrene lost by azeotropic distillation was replenished to obtain a vinyl ester resin composition VE-1 for coating a lining plate having a polymer fine particle content of 5% and an acid value of 5.0 mgKOH / g. Example 2 (Vinyl ester resin composition V for coating a lining plate)
Synthesis of E-2)] In the same manner as in Example 1, except that the emulsion of the crosslinked polymer fine particles was changed to the emulsion of the fine polymer particles B-2, the content of the fine polymer particles was 5%, and the acid value was 5.0 mgKOH / g of a vinyl ester resin composition VE-2 for coating a lining plate was obtained. [Comparative Example 1 (Vinyl ester resin composition V for coating lining plate)
Synthesis of E-3)] In the same manner as in Example 1, except that the emulsion of the polymer fine particles was changed to the emulsion of the polymer fine particles B-3, the polymer particles having a content of the polymer fine particles of 5% and an acid value of 5.0 mgKOH / g were used. A vinyl ester resin composition VE-3 for covering a lining plate was obtained. [Comparative Example 2 (Vinyl ester resin composition V for covering lining plate)
Synthesis of E-4)] In the same manner as in Example 1, except that the emulsion of the fine polymer particles was not added, and the acid value was 5.0 mgKOH /
g of a vinyl ester resin composition VE-4 for coating a lining plate was obtained. [Example 3 (Vinyl ester resin composition V for coating a lining plate)
Synthesis of E-5)] 774 g of a bisphenol A type epoxy resin having an epoxy equivalent of 185 (Araldite GY-250, manufactured by Ciba Geigy) is placed in a 3 L four-necked flask equipped with a stirrer, a reflux condenser, a gas inlet tube and a thermometer. And 454 g of an emulsion of crosslinked polymer fine particles B-1 were added. Then, the temperature was raised to 120 ° C. with stirring, and water was completely removed under reduced pressure under vacuum. Furthermore, bisphenol A272
g and tetraphenylphosphonium chloride 0.8g
After stirring at 150 ° C. for 2 hours under a nitrogen flow, 154 g of methacrylic acid, 6 g of tetrabutylammonium chloride, and 0.3 g of hydroquinone are added. The mixture is stirred at 110 ° C. for 6 hours under a flow of dry air, and 800 g of styrene is added. Thus, the acid value is 5.0 at a polymer fine particle content of 10%.
A mgVOH / g vinyl ester resin composition VE-5 for covering a lining board was obtained. [Comparative Example 3 (Vinyl ester resin composition for coating lining plate V)
Synthesis of E-6)] In the same manner as in Example 3 except that the emulsion of the fine polymer particles was not added in Example 3, the acid value was 5.0 mg KOH /
g of a vinyl ester resin composition VE-6 for coating a lining plate was obtained. [Example 4 (Synthesis of urethane (meth) acrylate resin composition UA-1 for coating lining plate)] Stirrer, reflux condenser,
In a 3 L four-necked flask equipped with a gas inlet tube and a thermometer, 915 g of polymeric MDI (a mixture of 4,4′-diphenylmethane diisocyanate and related polymethylene polyphenyl polyisocyanate; isocyanate content 31%) and 1197 g of styrene , 1.0 g of benzoquinone, 6.1 g of dibutyltin dilaurate,
With stirring under an air stream, 881 g of 2-hydroxyethyl methacrylate was added dropwise over 1 hour, and after completion of the addition, the mixture was reacted at 90 ° C. for 6 hours. Further, after cooling to 70 ° C., 341 g of an emulsion of polymer fine particles B-1 was added and stirred, and water and styrene were azeotropically removed to completely remove water. Finally, styrene lost by azeotropic distillation was replenished to obtain a urethane (meth) acrylate resin composition UA-1 for coating a lining board having a crosslinked polymer fine particle content of 5%. [Comparative Example 4 (Synthesis of urethane (meth) acrylate resin composition UA-2 for covering lining plate)] In the same manner as in Example 4, except that the emulsion of the polymer fine particles was not added, and the polymer was prepared in the same manner as in Example 4. Urethane (meth) acrylate resin composition UA-2 for coating a lining board without fine particles
I got Example 5 (Synthesis of Unsaturated Polyester Resin Composition UP-1 for Coating of Backing Plate) In a 3 L four-necked flask equipped with a stirrer, a reflux condenser, a gas inlet tube, and a thermometer, propylene was added to bisphenol A. 1,636 g of an adduct obtained by adding 2.1 mol of oxide and 445 g of maleic anhydride were added, and the acid value was 12 mgKOH / g at 200 ° C. under a nitrogen flow.
To obtain an unsaturated polyester.
1200 g of this unsaturated polyester and 800 g of styrene
Were mixed, and 364 g of an emulsion of crosslinked polymer fine particles B-1 was added. Further, the mixture was stirred while being kept at 70 ° C., and water and styrene were azeotropically removed to completely remove water. Finally, styrene lost by azeotropic distillation was replenished to obtain an unsaturated polyester resin composition UP-1 for coating a lining board having a polymer fine particle content of 8%. Comparative Example 5 (Synthesis of Unsaturated Polyester Resin Composition UP-2 for Coating of Backing Plate) In the same manner as in Example 5 except that no emulsion of the polymer fine particles was added, Unsaturated polyester resin composition UP-2 for coating a lining board was obtained. [Example 6 (Synthesis of ester (meth) acrylate resin composition EA-1 for coating lining plate)] Stirrer, reflux condenser,
In a 5 L four-necked flask equipped with a gas inlet tube and a thermometer, 1650 g of propylene glycol and isophthalic acid 1 were added.
800 g and 1720 g of maleic anhydride were charged, and 200
The mixture was stirred at 8 ° C for 8 hours to obtain an unsaturated polyester oligomer having an acid value of 60 mgKOH / g. By mixing 1040 g of this unsaturated polyester oligomer and 800 g of styrene,
Then 0.6 g of hydroquinone, 2 g of zinc octenoate,
Glycidyl methacrylate (158 g) was added, and dry air was flowed through the reaction system at 30 ml / min.
Stir for 3 hours. Further, 681 g of an emulsion of the crosslinked polymer fine particles B-1 was added, and the mixture was stirred while being kept at 70 ° C., and water and styrene were azeotropically removed to completely remove water.
Finally, replenish the styrene lost by azeotrope to obtain an ester (meth) for coating a lining board with a polymer fine particle content of 15%.
An acrylate resin composition EA-1 was obtained. [Comparative Example 6 (Synthesis of ester (meth) acrylate resin composition EA-2 for covering lining plate)] In the same manner as in Example 6, except that the emulsion of the fine polymer particles was not added, and the polymer was prepared in the same manner as in Example 6. Unsaturated polyester resin composition EA-2 for coating a lining board without fine particles was obtained. <Measurement of fracture strength by Kenken-type adhesion tester>
A soft steel plate having a thickness of 10 mm with irregularities of 5 cm × 0.5 cm was used as a substrate. The adhesion area of the substrate is 4.0cm
× 4.0 cm provided with a weir, and the resin composition 10 for coating the lining board obtained in the above Examples 1 to 6 and Comparative Examples 1 to 6
0 parts by weight of cobalt octenoate 0.5 parts, hardener 32
After mixing 1.5 parts of 8E (manufactured by Kayaku Akzo Co., Ltd.), 2.6 g was poured into the weir, and then 16 g of silica sand was uniformly dispersed.

After the resin was cured, excess silica sand was removed.
As shown in FIG. 2, an attachment 3 is attached to a resin (coating material) 2 cured on a substrate 1 by an epoxy resin adhesive (Cemedine 15).
00, manufactured by Cemedine Co.) 4. After curing for 4 days, the adhesive was cured and measured with a Kenken-type adhesion tester (Yamamoto Heavy Industries LPT-1500). The coating material application temperature, adhesive curing temperature, and test temperature were all 25 ° C., the loading speed was about 1 kgf / cm ² / sec, and the coating material breaking strength was calculated by the following equation.

Coating material breaking strength (kgf / cm ² ) = breaking load (kgf) / adhesive area (cm ² ) The results are shown in Table 1.

[0056]

[Table 1]

As shown in Table 1, each of the resin compositions for coating the backing plate of the examples has a high breaking strength, and since the broken portion is at the interface of the adhesive or the coating material / adhesive, the toughness is high and the mechanical strength is high. It can be seen that the mechanical durability is excellent. On the other hand, each of the resin compositions for coating the backing plate of Comparative Examples 2 to 6 does not contain fine polymer particles, and thus has a low breaking strength. It turns out that it is low and is inferior to mechanical durability. Although the resin composition for covering a lining plate of Comparative Example 1 contains fine polymer particles, its glass transition point is as high as 81 ° C., so that the effect of improving toughness is hardly observed. [Example 7] The vinyl ester resin composition VE-1 for covering a lining plate prepared in Example 1 was added to 4 kg, 20 g of cobalt octenoate as an accelerator, and 328E as a curing agent.
60 g (manufactured by Kayaku Akzo) was added and mixed well.

A 1 mx 2 m iron-backed plate was sufficiently shot blasted until a metallic luster was visible, and the above mixture was uniformly applied by a roll. Thereafter, 20 kg of No. 3 silica sand (made by Maruo Calcium Co., Ltd.) was evenly sprayed. 2
After standing for a time, the resin was confirmed to be cured, and excess silica sand (weighing 8.2 kg) that had not adhered was removed with a broom to obtain a coated lining plate.

[0059]

According to the present invention, the use of specific polymer fine particles can make the thermosetting resin tough enough to withstand practical use. A resin composition can be provided. Therefore, the lining plate coated with this is tough, and the coating material on the surface is not easily broken even when a high-speed vehicle or a heavy vehicle passes.

[Brief description of the drawings]

FIG. 1 is a diagram for explaining an adhesion test performed in Examples.

[Explanation of symbols]

 Reference Signs List 1 base material 2 cured resin (coating material) 3 attachment 4 adhesive

Continued on the front page (51) Int.Cl. ⁶ Identification code FI C09D 155/00 C09D 155/00 167/06 167/06 175/14 175/14 // C08F 299/06 C08F 299/06 (72) Inventor Takuo Sugioka 5-8 Nishiburi-cho, Suita-shi, Osaka Nippon Shokubai Co., Ltd. (72) Inventor Masatoshi Yoshida 5-8 Nishi-Maburi-cho, Suita-shi, Osaka Nippon Shokubai Co., Ltd.

Claims (9)

[Claims] 1. A resin composition for coating a lining plate for fixing an aggregate to the surface of a lining plate, comprising a thermosetting resin and polymer fine particles having a glass transition point of 20 ° C. or lower. A resin composition for coating a lining plate. 2. The resin composition according to claim 1, wherein the polymer fine particles have a crosslinked structure. 3. An average particle diameter of the polymer fine particles is 100.
The resin composition for coating a lining board according to claim 1 or 2, which is not more than μm. 4. The resin composition according to claim 1, wherein the polymer fine particles are (meth) acrylate-based polymer fine particles. 5. The polymer fine particles having a glass transition point of not higher than 20 ° C. and the polymer fine particles having a glass transition point of not higher than 20 ° C. are used as a core phase.
The resin composition for coating a lining board according to any one of claims 1 to 4, wherein the resin composition comprises a core / shell type fine particle having a polymer having a temperature higher than 0 ° C as a shell phase. 6. The resin composition for coating a lining board according to claim 1, wherein the thermosetting resin is a radical-curing thermosetting resin. 7. The radical-curable thermosetting resin is at least one resin selected from the group consisting of an unsaturated polyester resin, a vinyl ester resin, a urethane (meth) acrylate resin and an ester (meth) acrylate resin. The resin composition for covering a lining board according to claim 6. 8. A backing plate whose surface is covered with the resin composition for covering a backing plate according to any one of claims 1 to 7 and an aggregate. 9. A method of coating the surface of a lining board with the resin composition for coating a lining board according to claim 1 and an aggregate.