JPH0136508B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to compositions for floor coatings, wall coatings or road markings. There are a variety of solvent-based and emulsion-based paints as well-known resins used for coating floors and walls of concrete, asphalt, metal, etc., but these are difficult to apply thickly and have limited durability. be. Therefore, for applications with particularly strong demands for durability and chemical resistance, synthetic resin flooring materials have traditionally been used that are made from liquid resins such as epoxy resins, unsaturated polyester resins, and polyurethane resins that are hardened after application. Epoxy resins are used in a wide variety of fields due to their alkali resistance and high strength, but they generally lack flexibility, tend to crack easily, and have poor weather resistance. Polyester resin is used for factory floors due to its acid resistance, but it also lacks flexibility, shrinks significantly when cured, and has poor weather resistance. Polyurethane resin has elasticity and flexibility and is widely used as a light-load floor, but it has poor chemical resistance and weather resistance. In addition, these materials have poor construction productivity due to their long curing time, and particularly in winter, when construction is performed at temperatures below 5° C., the curing properties become extremely poor. On the other hand, solvent-based paint types and hot melt types such as petroleum resins and rosin-based resins are commonly used as road marking materials for marking white lines and yellow lines on road surfaces such as concrete and asphalt.
Paint types have a thin coating and are not very durable, while hot melt types, which have a thick coating, lack flexibility and are prone to cracking and have poor abrasion resistance. Wear, especially on roads with heavy traffic;
In addition, spiked tires and tires with chains on roads in cold winter regions cause significant wear and tear, and their durability is only short-lived. In addition, the hot melt type requires heating to 200 to 250°C during coating, so there are also problems in that it is less safe and requires complicated work. As a material that compensates for the shortcomings of the above-mentioned floor and wall coatings or road marking materials,
A (meth)acrylic acid ester composition containing a vinyl chloride-vinyl acetate copolymer as one component has been proposed, but it is still unsatisfactory in terms of weather resistance. The present invention provides a floor and wall coating or road marking composition that overcomes the drawbacks of conventional materials as described above. That is, an object of the present invention is to provide a coating composition that has excellent weather resistance, excellent chemical resistance (acid and alkaline resistance), and provides a coating film with excellent durability due to appropriate strength and flexibility. . In addition, the composition of the present invention has a suitably short curing time so as not to impair workability during construction, and has excellent curability even at low temperatures of 5°C or lower, making it a composition with excellent construction productivity. It is extremely useful. The present invention provides a floor and wall coating or road marking composition comprising the following (A) to (E). (A) 51-85% by weight of at least one acrylic ester and/or methacrylic ester (B) 10% by weight of at least one acrylic ester and/or methacrylic ester soluble in (A) ~24% by weight (C) 5~25% by weight of plasticizer soluble in (A) (D) Compounds having at least two polymerizable double bonds in one molecule, (A), (B), ( 0.1 to 10 parts by weight per 100 parts by weight of the total amount of C) (E) Paraffin and/or wax with a melting point of 40°C or higher, per 100 parts by weight of the total amount of (A), (B), and (C) , 0.1 to 5 parts by weight. The compositions of the present invention generally also include a curing agent,
Accelerators and other necessary additives are added, and the mixture is mixed with fillers such as aggregates and applied using a trowel, roller, brush, or other suitable tool or coating machine. , favorable workability during coating, and favorable self-leveling properties to obtain a good coating surface are required. In order to satisfy these requirements, the viscosity of the composition is preferably low, but if it is too low, the curability will be poor, so there is an appropriate viscosity range, preferably 50 to 1000 cps. There is also a preferable range for the curability of a mixture of the composition of the present invention, a curing agent, an accelerator, other necessary additives, and fillers such as aggregates. The composition of the present invention has excellent curability, and a short curing time is preferred from the viewpoint of construction productivity. but,
Particularly in the case of floor and wall coatings, there is ample time after application for the formulation to lose its fluidity and smooth the coating surface before it hardens. The time during which the product is kept is called the pot life. If the pot life and curing time are too short, the coating operation becomes difficult and a good coating film cannot be obtained. Generally, the amounts of curing agent and accelerator are adjusted so that the required pot life is obtained depending on the work and the curing occurs within a sufficiently short curing time. The preferred pot life is 5 to 30 minutes, and the preferred curing time is 10 to 90 minutes. If the ratio of component (A) increases, the viscosity of the composition will decrease and coating workability and self-leveling properties will improve, but curability will deteriorate, so an appropriate ratio is required. %, preferably 60-75% by weight. Examples of the acrylic ester of component (A) include methyl acrylate, ethyl acrylate, n-butyl acrylate, i-butyl acrylate, t-butyl acrylate, and 2-ethylhexyl acrylate. Examples include methyl methacrylate, ethyl methacrylate, n-butyl methacrylate, i-butyl methacrylate, t-butyl methacrylate, 2-ethylhexyl methacrylate, and lauryl methacrylate. Same as monomers whose temperature is 80℃ or higher, such as methyl methacrylate and t-butyl methacrylate.
℃ or below, such as butyl acrylate, 2-ethylhexyl acrylate, 2-methacrylate
A mixture of ethylhexyl and lauryl methacrylate is a preferred combination in order to give the coating film appropriate strength and flexibility. A particularly preferred combination is 30 to 85% by weight of monomers with a glass transition temperature of 80°C or higher.
and a combination of 15 to 70% by weight of monomers that are also below 0°C. Component (B) is added for the purpose of controlling the viscosity of the composition, shortening the curing time due to the presence of a polymer component, and improving durability by balancing the strength and flexibility of the coating film. When the ratio of component (B) is low, the curability of the composition is poor. If the ratio of component (B) is too high, the curing time will be shortened, but the viscosity of the composition will increase, resulting in poor coating workability and self-leveling properties. The proportion of component (B) determined from these required performances is 10 to 24% by weight, preferably 15 to 24% by weight. In order to obtain a coating of good quality, component (B) must be soluble in component (A). Examples of monomers for obtaining the polymer or copolymer of component (B) include methyl methacrylate, ethyl methacrylate, n-butyl methacrylate, i-butyl methacrylate, t-butyl methacrylate, and dimethacrylate. -Ethylhexyl, lauryl methacrylate, methyl acrylate, ethyl acrylate, n-butyl acrylate,
i-butyl acrylate, t-butyl acrylate,
Examples include 2-ethylhexyl acrylate. Preferably, a polymer of methyl methacrylate and methyl methacrylate are combined with a monomer having a low glass transition temperature of the polymer, such as methyl acrylate, ethyl acrylate, n-butyl acrylate, i-butyl acrylate, and 2-acrylate. Ethylhexyl, n-butyl methacrylate, methacrylic acid 2-
Examples include copolymers with ethylhexyl and lauryl methacrylate. Examples of the plasticizer of component (C) include phthalates such as dibutyl phthalate, dihebutyl phthalate, di-n-octyl phthalate, di-2-ethylhexyl phthalate, octyldecyl phthalate, di-n-decyl phthalate, diisodecyl phthalate, and butylbenzyl phthalate. Acid esters, di-2-
Ethylhexyl adipate, octyldecyl adipate, di-2-ethylhexyl sebacate, dibutyl sebacate, di-2-ethylhexyl azelate, polypropylene glycol, chlorinated paraffin; adipic acid-based, azelaic acid-based, sebacic acid-based, phthalic acid-based polyesters Polymer plasticizer;
Examples include at least one kind or a mixture of two or more kinds selected from epoxidized oils, epoxy polymer plasticizers such as epoxidized fatty acid esters, and the like. Ingredients (C)
is added for the purpose of adjusting the viscosity of the composition and improving the conformability to the underlying surface by plasticizing the cured product. If the ratio of component (C) is too high, the stain resistance of the coating film will deteriorate, which is not preferable. Based on these required performances, the ratio of component (C) is 5 to 25% by weight, preferably 5 to 25% by weight.
It is 20% by weight. The above components (A), (B), and (C) adjust the viscosity of the composition, which affects coating workability, self-leveling property, and curability, to a preferable range, and improve the strength of the cured product. The flexibility balance is also adjusted to a preferred range. Component (D) is added for the purpose of crosslinking component (A) during curing and improving the durability of the cured product. component
Addition of (D) also improves the chemical resistance and stain resistance of the coating film surface. Furthermore, the addition of component (D) also improves curability. If the amount of component (D) is too large, it will deteriorate the flexibility of the cured product, so it should be added in an amount of 0.1 to 10 parts by weight, preferably 0.1 to 10 parts by weight, based on 100 parts by weight of the total amount of components (A), (B), and (C). It is 1 to 5 parts by weight. Component (D) is ethylene glycol di(meth)acrylate, 1,2
-Propylene glycol di(meth)acrylate, 1,3-butylene glycol di(meth)acrylate, 1,6-hexanediol di(meth)acrylate
Alkanediol di(meth)acrylates such as acrylates, diethylene glycol di(meth)acrylate, dipropylene glycol di(meth)acrylate, triethylene glycol di(meth)acrylate, tetraethylene glycol di(meth)acrylate, polyethylene Polyoxyalkylene-glycol di(meth)acrylate such as glycol di(meth)acrylate, divinylbenzene, diallyl phthalate, triallyl phthalate, triallyl cyanurate,
Examples include triallyl isocyanurate, allyl (meth)acrylate, diallyl fumarate, etc.
These may be used alone or in combination of two or more. Component (E) includes paraffin wax, polyethylene wax, higher fatty acids such as stearic acid and 1,2-hydroxystearic acid, and paraffin wax is preferably used. Component (E) is added for the purpose of blocking air during the curing reaction on the surface of the coating film, imparting gloss to the cured surface, and improving stain resistance. Since the temperature conditions during coating differ greatly between summer and winter, in order to satisfy these objectives throughout the year, it is preferable to use two or more types with different melting points in combination. Addition of a large amount of component (E) will damage the appearance of the coating surface, so add 0.1 to 5 parts by weight per 100 parts by weight of components (A), (B), and (C).
Parts by weight are used, preferably from 0.2 to 2 parts by weight. The composition of the present invention is prepared by using a known redox catalyst consisting of a combination of a curing agent and an accelerator.
It can be cured within 2 hours in the temperature range of °C. Although various types of redox catalysts can be used, it is advantageous to use a combination of a tertiary amine as a promoter and an organic peroxide as a curing agent. The tertiary amines preferably have at least one aromatic residue directly bonded to the nitrogen atom, particularly N,N'-dimethylaniline, N,N'-dimethyl-p-toluidine,
N,N'-di(hydroxyethyl)-p-toluidine, N,N'-di(2-hydroxypropyl)
-p-Toluidine alone or a combination of two or more is preferred. A preferred example of the organic peroxide is benzoyl peroxide. In order to avoid handling hazards, it is preferable to use benzoyl peroxide in the form of a paste or powder diluted with an inert liquid or solid to a concentration of about 50%. Preferred pot life of the formulation of the composition of the invention 5
~30 minutes, and preferred curing times of 10 to 90 minutes, it is necessary to adjust the amount of curing agent and/or accelerator depending on the temperature of the formulation or the air temperature at the time of application. The amount of organic peroxide (concentration 50%) used is 0.5 to 10 parts by weight per 100 parts by weight of the composition of the present invention.
It is preferable to use parts by weight, more preferably 1 to 5 parts by weight.
Parts by weight. Further, the amount of tertiary amine used is preferably 0.1 to 6 parts by weight, more preferably 0.3 to 4 parts by weight. When the composition of the present invention is mixed with both the curing agent and accelerator components of the redox catalyst, the components are immediately mixed.
The polymerization reaction of component (A) and component (D) is started, and the curing of the composition progresses. Further, even when the composition of the present invention is mixed with a curing agent, curing proceeds, albeit slowly, at room temperature. Therefore, it is preferred that the curing agent is mixed into the composition of the invention immediately before coating. On the other hand, since mixing the composition of the present invention and an accelerator does not advance the curing of the composition of the present invention, the accelerator can be mixed in advance with the composition of the present invention and stored. This method is preferable because it simplifies the work during coating. It is also possible to change the mixing method of the curing agent and accelerator depending on the coating method.
If the composition of the present invention is divided into two parts, a curing agent is mixed in one part, an accelerator is mixed in the other part, and these two parts are mixed immediately before coating, a two-component spray coating machine can be used. can be used. In this case, components that undergo a polymerization reaction, such as component (A) and component (D), are removed from the composition in which the curing agent is mixed, and component (A) and component (D) are added to the composition in which the accelerator is mixed. It is also possible to configure the present composition by mixing the two liquids so that the entire amount is contained. This method is preferable because the composition containing the cured product can be stored stably for a long period of time. Ultraviolet absorbers can be added to the compositions of the invention to further improve weather resistance. Such ultraviolet absorbers include 2-hydroxy-
4-methoxybenzophenone, 2-hydroxy-
4-octyloxybenzophenone, 2-hydroxy-4-decyloxybenzophenone, 2-hydroxy-4-dodecyloxybenzophenone,
Derivatives of 2-hydroxybenzophenone such as 2-hydroxy-4,4'-dimethoxybenzophenone, 2-hydroxy-4,4'-dibutoxybenzophenone, or 2-(2'-hydroxy-5' -methylphenyl)benzotriazole, 2-(2'-
Hydroxy-3′,5′-dithyabutylphenyl)benzotriazole, 2-[2′-hydroxy-3′,5′-bis(2,2′-dimethylpropyl)phenyl]benzotriazole or their halogens Examples include benzotriazole derivatives such as substituted derivatives, and esters of salicylic acid such as phenyl salicylate, p-ethylphenyl salicylate, and p-tertiarybutylphenyl salicylate. UV absorber is an ingredient
It is preferable to add in an amount of 0.01 to 5 parts by weight per 100 parts by weight of the total amount of (A), (B), and (C). In addition, γ-methacrylocypropyltrimethoxysilane and γ-glycidoxypropyltrimethoxysilane are added to the composition of the present invention for the purpose of stabilizing the adhesiveness to the substrate and improving the durability of the adhesive strength with the filler. , N-β-(aminoethyl)-γ-aminopropyltrimethoxysilane, γ-mercaptopropyltrimethoxysilane, and the like can be added. In addition, for the purpose of stabilizing the curability of the composition of the present invention, tributyl phosphite, tri(2-ethylhexyl) phosphite, tridecyl phosphite, tristearyl phosphite, tris(nonylphenyl) phosphite, triphenyl phosphite, etc. Phosphites such as phosphites, various antifoaming agents and leveling agents for the purpose of adjusting the surface appearance of the coating film, and hydroquinone, hydroquinone monomethyl ether, 2,4-dimethyl for the purpose of improving the storage stability of the composition of the present invention. Polymerization inhibitors such as -6-tert-butylphenol can be added to the compositions of the invention. The composition of the present invention is generally applied as a mixture with aggregate and other fillers, but the aggregate has an average particle size of 10 μ or more and an oil absorption of 25 c.c. linseed oil/100 g. The following are preferred. Examples of these aggregates include sand, silica sand, quartz sand, colored or fired products of these, rock powders such as quartz powder and silica sand powder, colored porcelain, and pulverized ceramic bases that have been fired and hardened. , zinc white, calcium carbonate, alumina, glass beads, etc. A combination of aggregates with different particle sizes is preferred for improving coating workability and self-leveling properties. Furthermore, asbestos, sepiolite, silica powder such as Aerosil, etc. can be added as a filler in order to impart thixotropy to the compound. In addition to the above-mentioned fillers, it is preferable to use colored pigments and dyes, such as titanium oxide, barium sulfate, carbon black, chrome vermilion, red iron,
Ultramarine blue, cobalt blue, phthalocyanine blue,
Phthalocyanine green etc. are used. Generally, 0 to 900 parts by weight of these fillers are mixed with 100 parts by weight of the composition of the present invention for coating. A mixture of the composition of the present invention, a curing agent, an accelerator, other additives, aggregate and other fillers can be used to cover floors such as concrete, asphalt, steel plates, etc., or wall surfaces. If necessary, it is preferable to perform a brimer treatment on a base such as a floor surface, wall surface, etc., and then apply this composition thereon. As a construction method, methods such as spraying, metal trowel finishing, brush painting, and roller coating can be used. There is also a construction method in which a mixture with no or only part of the aggregate is applied in advance, and the aggregate is spread before it hardens, allowing some of the aggregate to protrude from the coating surface and imparting non-slip properties. It is possible. In formulations in which aggregate is mixed in advance, the type and amount of aggregate is selected depending on the purpose of coating. Spray, printing paint,
According to coating methods such as roller coating, it is possible to apply a relatively thin coating film, that is, a coating film of 0.2 to 1 mm, but when formulating for such purposes, the amount of aggregate should be adjusted to the composition of the present invention. It is preferably 30 to 100 parts by weight per 100 parts by weight. thicker coating,
That is, when applying a coating film of 1 to 30 mm, a metal trowel finish is preferred, and the amount of aggregate is preferably 100 to 900 parts by weight per 100 parts by weight of the composition of the present invention. In this case, if a smooth coating surface is desired, the amount of aggregate is
The amount of aggregate is preferably close to 100 parts by weight, and when the coating film is thick, an amount close to 900 parts by weight of aggregate is preferred from an economical point of view. However, if it exceeds 900 parts by weight, the curing properties of the compound will deteriorate, which is not preferable. All parts in the examples below refer to parts by weight, and pot life and cure time are based on the time the curing agent is added to the formulation. Example 1 Methyl methacrylate 40 parts 2-ethylhexyl acrylate 20 parts ethylene glycol dimethacrylate 2 parts Chlorinated paraffin (chlorine content 50%) 10 parts Octyldecyl phthalate 10 parts N,N'-di(2-hydroxypropyl) -p
- A mixture of 0.5 parts of toluidine and 0.0025 parts of hydroquinone was placed in a dissolving tank equipped with a stirrer and a heating jacket, and while stirring, a copolymer of methyl methacrylate (MMA) and butyl acrylate (BA) (MMA/BA=90/ 10) Added 20 parts little by little. These mixtures were then heated to 50°C and n-
0.5 parts of paraffin with a melting point of 54-56°C and 0.5 parts of paraffin with a melting point of 64-66°C were added. MMA/BA
After the copolymer was completely dissolved, the mixture was cooled. In this way, a composition having a viscosity of 400 cps at 20°C was obtained. When 2 parts of 50% pure benzoyl peroxide powder (hereinafter referred to as BPO powder) was added as a curing agent to 100 parts of this composition, and the mixture was thoroughly mixed and cured, it was cured in about 50 minutes at 20°C. When this cured product was subjected to a tensile test based on JIS K 6301, the breaking strength was 130 Kg/cm ² and the breaking elongation was 130%.
It showed a good balance between strength and flexibility. Next, to 50 parts of this composition, 23 parts of silica sand powder, 25 parts of silica sand No. 8, and 2 parts of a coloring agent (EST-417 Green, manufactured by Nikko Vicks) were added and stirred well, and then 1 part of BPO powder was added. Mix the mixture and apply it to the primed concrete floor at room temperature 20°C.
The coating was applied using a metal trowel to a thickness of about 2 mm at ℃. The formulation had a pot life of about 20 minutes, and could be coated with good workability during this time. Further, the self-leveling property of the compound was good, and the coated compound cured after about 1 hour to form a beautiful coating film with a smooth surface. Example 2 To 70 parts of the composition of Example 1, 25 parts of silica sand powder, 5 parts of colorant, 1 part of Aerosil-200, and 2.8 parts of BPO powder were added and stirred to obtain a blend. This mixture was applied to a slate plate coated with a primer to a thickness of about 1 mm using a metal trowel, and cured at room temperature to form a coating film. In addition, as a coloring agent, A.
Three types of coating films were created using three types of titanium oxide (rutile), B. Gray paste (EST-015X-1 manufactured by Nikko Vicks), and C. Green paste (EST-417 Green manufactured by Nikko Vicks). It was created. These three types of coating films were tested using an accelerated exposure tester (standard ultraviolet weather meter manufactured by Toyo Rika Kogyo Co., Ltd.).
WE-2 type) was subjected to a weather resistance test for 1000 hours, but no change was observed in the color or surface condition of the paint film. Comparative example 1 Methyl methacrylate 40 parts 2-ethylhexyl acrylate 20 parts Chlorinated paraffin (Cl content 40%) 20 parts Tinuvin P (ultraviolet absorber, manufactured by Ciba Gaiki Co., Ltd.)
0.25 parts ethylene glycol dimethacrylate 2 parts N,N'-di(2-hydroxypropyl)-p
-Pour a mixture of 0.5 parts of toluidine and 0.0025 parts of hydroquinone into a dissolving tank equipped with a stirrer and a heating jacket, and dissolve vinyl chloride (VC)/vinyl chloride (VC) while stirring.
20 parts of vinyl acetate (VAC) (VC/VAC=75/25) copolymer were added little by little. The mixture was then heated to 50°C and n-paraffin (melting point 54~
56°C) was added. After the VC/VAC copolymer was completely dissolved, the mixture was cooled. In this way, a composition having a viscosity of 500 cps at 20°C was obtained. A coating film was created using the above composition of Comparative Example 1 instead of the composition of Example 1 according to the formulation and application method according to Example 2, and a weather resistance test according to the method of Example 2 was performed. I went. The paint film using titanium oxide as a coloring agent turned yellow, and the surface lost its luster and became rough. The colors of the paint films using gray paste and green paste as colorants were all significantly faded, the surface lost its luster, and significant cracking occurred. Comparative Example 2 A coating film was created by using an epoxy resin for coating floors (Tough Epon M-1, manufactured by Nippon Debcon Co., Ltd.) instead of the composition of Example 1 and using the formulation and application method according to Example 2. Then, a weather resistance test was conducted according to the method of Example 2. The coating film using titanium oxide as a coloring agent turned yellow significantly and the surface gloss completely disappeared. The colors of the paint films using gray paste and green paste as coloring agents were both significantly yellowed, the surface lost its luster, and significant cracking occurred. Examples 3 to 7 Methyl methacrylate 42 parts n-butyl acrylate 18 parts Chlorinated paraffin (Cl content 40%) 20 parts Ethylene glycol dimethacrylate 2 parts N,N'-di(2-hydroxypropyl)-p
- A mixture of 1.5 parts of toluidine and 0.002 parts of hydroquinone was placed in a dissolving tank equipped with a stirrer and a heating jacket, and while stirring, the copolymer shown in Table 1 was dissolved.
20 parts were added in portions. Next, the temperature of these mixtures was raised to 50°C, and n-paraffin (melting point 64-66
℃) was added. After the copolymer was completely dissolved, the mixture was cooled. In this way, compositions having the viscosities shown in Table 1 were obtained. When 0.5 part of BPO powder was added to 100 parts of these compositions and cured at room temperature, a tensile test was conducted based on JIS K 6301, and as shown in Table 1, both strength and elongation were positive. It was found that the cured product was well-balanced. In addition, for 40 parts of these compositions, 40 parts of silica sand No. 6
parts, 10 parts of calcium carbonate, 10 parts of titanium oxide,
A mixture prepared by adding 1.6 parts of BPO powder and stirring is applied to the asphalt road surface at about 20°C to a thickness of about 2.
When coated using a coating machine to achieve a thickness of 11 mm
Cured in ~13 minutes. Traffic resumed 25 minutes after construction.6
After several months, the applied surface was observed and found to maintain good whiteness and no defects such as cracks, wrinkles, or breaks were observed.

[Table] Example 8 Methyl methacrylate 40 parts 2-ethylhexyl acrylate 25 parts Tetraethylene glycol dimethacrylate
A mixture of 5 parts di-2-ethylhexyl phthalate 10 parts N,N'-dimethyl-p-toluidine 0.5 parts hydroquinone 0.0025 parts was charged into a dissolution tank equipped with a stirrer and a heating jacket, and mixed with methyl methacrylate (MMA) while stirring. 20 parts of a copolymer of n-butyl methacrylate (BMA) (MMA/BMA=70/30) was added little by little. Next, the mixture was heated to 50°C, and 0.5 part of n-paraffin having a melting point of 46 to 48°C was added.
0.5 part of the same material having a melting point of 56-58°C was added.
After the MMA/BMA copolymer was completely dissolved, the mixture was cooled. In this way, a composition having a viscosity of 100 cps at 20°C was obtained. Add 0.6 parts of BPO powder to 12 parts of this composition,
Add 10 parts of silica sand powder and silica sand No. 8 18 to the well-stirred mixture.
A mixture of 25 parts of silica sand, 25 parts of silica sand No. 5, and 35 parts of silica sand No. 3 was mixed and stirred to prepare a blend. This formulation was applied to a thickness of 30 mm on a primed concrete floor using a metal trowel at 5°C. The workability of the blend was good, and the pot life was approximately 25 minutes, and it was possible to work satisfactorily within this time. Curing time approx.
It hardened in 70 minutes, and a durable mortar bed with a compressive strength of 320 Kg/cm ² and a bending strength of 160 Kg/cm ² measured according to JIS K 6911 could be produced. Example 9 (Production of Composition A) A mixture of 27 parts of methyl methacrylate, 2-ethylhexyl acrylate, 31 parts of triethylene glycol dimethacrylate, 2 parts of diisodecyl phthalate, 13 parts, and 0.0025 parts of hydroquinone was placed in a dissolution tank equipped with a stirrer and a heating jacket. Add methyl methacrylate (MMA) and n-butyl methacrylate (BMA) while stirring.
27 parts of a copolymer (MMA/BMA=70/30) were added little by little. These mixtures were then heated to 50°C, and n-paraffin with a melting point of 56-58°C was added to
1 part, and 0.3 parts of the same melting point 64-66°C were added.
After the MMA/BMA copolymer was completely dissolved, the mixture was cooled. In this way, a composition A having a viscosity of 200 cps at 20°C was obtained. (Production of composition B) Methyl methacrylate 41 parts 2-ethylhexyl acrylate 25 parts triethylene glycol dimethacrylate 2 parts diisodecyl phthalate 10 parts Hydroquinone 0.0025 parts Methyl methacrylate/n-butyl methacrylate copolymer 22 parts n-paraffin Melting point Composition B having a viscosity of 80 cps at 20°C was produced according to the method for producing Composition A using 0.5 part of n-paraffin, melting point of 64-66°C, at 56-58°C. 15 parts of a solution of N,N'-di(2-hydroxypropyl)-p-toluidine (DPT) dissolved in methyl methacrylate (MMA) (DPT/MMA = 10/90) for 60 parts of Composition A, gray Formulation A was prepared by mixing 3 parts of a coloring agent (EST-015X-1 manufactured by Nikko Vicks), 20 parts of barium sulfate, and 2 parts of Aerosil 200. For 75 parts of composition B, colorant (manufactured by Nikko Vicks)
Formulation B was prepared by mixing 3 parts of EST-015X-1), 20 parts of barium sulfate, 2 parts of Aerosil 200, and 8 parts of BPO powder. Mixture A and Mixture B are continuously mixed using a two-component airless sprayer, and the mixture is sprayed onto the primed concrete vertical surface to a thickness of about 1 cm.
It was applied by spraying to mm. The coating cured in approximately 30 minutes, forming a durable concrete protective film.

Claims (1)

[Claims] 1 (A) At least one of acrylic acid alkyl ester and methacrylic acid alkyl ester 51-85
Weight% (B) 10-24% by weight of acrylic polymer soluble in component (A) (C) 5-25% by weight of plasticizer soluble in component (A) (D) Components (A) to (C) 0.1 to 10 parts by weight of a compound having at least two polymerizable double bonds per molecule (E) per 100 parts by weight of the total amount of components (E) At least one of paraffin and wax having a melting point of 40°C or higher (A) ) component to (D) total amount of component
A floor and wall coating or road marking composition blended in an amount of 0.1 to 5 parts by weight per 100 parts by weight.