composition

Abstract

To provide a composition containing polymer particles, which exhibits excellent applicability along with excellent storage stability.SOLUTION: A composition according to the present invention comprises polymer particles (A), asphalt (B), ammonia (C), and a liquid medium (D). When the content of component (A) is MA [parts by mass], the content of component (B) is MB [parts by mass], and the content of component (C) is MC [parts by mass], the following relationship is satisfied: MC / (MA+MB)=1.0×10-5-1.0×10-2.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a composition containing polymer particles. [Background technology]

[0002] Compositions containing polymer particles such as latex are used to create waterproof layers for the purpose of waterproofing, water blocking, and waterproofing of buildings, etc. Such waterproof layers are generally formed by coating a composition containing polymer particles, asphalt, inorganic fillers, etc., and then drying it (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2007-332202 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the various applications described above, compositions containing such polymer particles are required to have good workability, such as the ability to quickly dry after application to form a film, etc. In addition, since the composition needs to be stored until it is used at the construction site, the polymer particles and asphalt need to be stably dispersed in the composition, and the composition needs to have excellent storage stability.

[0005] Some aspects of the present invention provide a composition containing polymer particles that has good application properties and excellent storage stability. [Means for solving the problem]

[0006] The present invention has been made to solve at least part of the above-mentioned problems, and can be realized in any of the following aspects.

[0007] One aspect of the composition according to the present invention is A composition comprising polymer particles (A), asphalt (B), ammonia (C), and a liquid medium (D), When the content of the (A) component is MA [parts by mass], the content of the (B) component is MB [parts by mass], and the content of the (C) component is MC [parts by mass], MC / (MA+MB)=1.0×10 -5 ~1.0×10 -2 It is.

[0008] In one embodiment of the composition, MB / MA may be 0.5 to 500.

[0009] In any of the above-described embodiments of the composition, With respect to MA=100 parts by mass, MB may be 50 to 600 parts by mass and MC may be 0.002 to 4 parts by mass.

[0010] In any of the above-described embodiments of the composition, The total content of the component (A) and the component (B) may be 70 to 90% by mass relative to 100% by mass of the composition. Effect of the Invention

[0011] The composition according to the present invention has excellent storage stability because the polymer particles and asphalt can be stably dispersed in the composition, and also has good workability because it can be quickly dried to form a film after application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Preferred embodiments of the present invention will be described in detail below. Note that the present invention is not limited to the following embodiments, and includes various modified examples that are implemented within the scope of the present invention.

[0013] In this specification, "(meth)acrylic" refers to "acrylic" or "methacrylic".

[0014] In this specification, a numerical range described using "X to Y" means that the numerical range includes the numerical value X as the lower limit and the numerical value Y as the upper limit.

[0015] 1. Composition A composition according to one embodiment of the present invention is a composition containing polymer particles (A) (hereinafter also referred to as "component (A)"), asphalt (B) (hereinafter also referred to as "component (B)"), ammonia (C) (hereinafter also referred to as "component (C)"), and a liquid medium (D) (hereinafter also referred to as "component (D)"), and the ratio of the content of the component (A) to the content of the component (B) is MA [parts by mass], the content of the component (B) is MB [parts by mass], and the content of the component (C) is MC [parts by mass], where MA is the content of the component (A) [parts by mass], MB is the content of the component (B) [parts by mass], and MC is the content of the component (C) [parts by mass], and the ratio of the content of the component (C) to the content of the component (C) is MC / (MA+MB)=1.0×10 -5 ~1.0×10 -2 It is. Components that may be contained in the composition according to this embodiment will be described in detail below.

[0016] 1.1. Polymer particles (A) The composition according to the present embodiment contains polymer particles (A). The composition according to the present embodiment is preferably in the form of a latex in which the polymer particles (A) are dispersed in a liquid medium (D).

[0017] Examples of the polymer particles (A) include rubber latexes such as natural rubber latex, polybutadiene rubber latex, isoprene rubber latex, chloroprene rubber latex, styrene-butadiene copolymer (SBR) latex, butadiene-isoprene copolymer latex, butadiene-styrene-isoprene copolymer latex, acrylonitrile-butadiene copolymer latex (NBR), styrene-butadiene-styrene block copolymer latex (SBS), styrene-isoprene-styrene block copolymer latex (SIS), ethylene-vinyl acetate copolymer latex, acrylate-vinyl acetate copolymer latex, acrylate-styrene copolymer latex, acrylate-ethylene copolymer latex, silicone-acrylate copolymer latex, olefin polymer latex, and polyurethane latex, or resin polymer latexes. Furthermore, these polymer latexes may have a functional group such as a carboxyl group, an amide group, an N-methylol group, a glycidyl group, a hydroxyl group, or a sulfonic acid group.

[0018] The glass transition temperature (Tg) of the polymer particles (A) is preferably from -90°C to 10°C, and more preferably from -75°C to -10°C. The glass transition temperature (Tg) of the polymer particles (A) can be easily adjusted by using two or more different types of polymer particles. When the glass transition temperature (Tg) of the polymer particles (A) is within the above range, the film-forming property and elasticity of the film formed from the composition may be good.

[0019] The number average particle size of the polymer particles (A) is preferably in the range of 0.05 μm to 5 μm, and more preferably in the range of 0.1 μm to 3 μm. When the particle size is within the above range, the viscosity of the resulting composition can be easily adjusted to a level suitable for handling.

[0020] The volume average particle size of the polymer particles (A) can be determined from the particle size distribution measured using a particle size distribution measuring device that uses a laser diffraction / scattering method as the measurement principle. An example of such a particle size distribution measuring device is Microtrac MT3000II (manufactured by Microtrac Bell).

[0021] The gel content of the polymer particles (A) is preferably 0 to 80%, more preferably 0 to 60%. When the gel content of the polymer particles (A) is within the above range, extensibility tends to be ensured. The "gel content" refers to the toluene-insoluble content of the polymer particles (A).

[0022] 1.2.Asphalt (B) The composition according to the present embodiment contains asphalt (B). Examples of the asphalt (B) include natural asphalt and petroleum asphalt.

[0023] Examples of natural asphalt include Gilsonite, Grand Pitch, Grahamite, Trinidad Lake asphalt, etc., and two or more of these natural asphalts can be mixed and used.

[0024] Examples of petroleum asphalt include straight asphalt, blown asphalt, and semi-blown asphalt, each of which is mainly composed of asphaltene, paraffin, naphthene, and aromatic resin. Of these, straight asphalt is preferred. Two or more of these may be used in combination. In addition, the (B) component may also contain a resin (petroleum resin, rosin, etc.) for tackification, a plasticizer (oil, etc.) for low-temperature fluidity, and the like.

[0025] The volume average particle diameter of the asphalt (B) is preferably in the range of 30 μm to 100 μm, more preferably in the range of 30 μm to 60 μm. When the volume average particle diameter of the asphalt (B) is within the above range, the asphalt (B) tends to be easily dispersed homogeneously in the composition, and a composition with excellent storage stability tends to be obtained. The volume average particle diameter of the asphalt (B) can be measured by the same method as the method for measuring the volume average particle diameter of the polymer particles (A) described above.

[0026] In the composition according to the present embodiment, when the content of component (A) is MA [parts by mass] and the content of component (B) is MB [parts by mass], the value of MB / MA is preferably 0.5 to 500, more preferably 0.5 to 200, even more preferably 1 to 100, and particularly preferably 1 to 10. When the value of MB / MA is within the above range, extensibility can be ensured even when exposed to low temperatures, and the waterproofing and water-stopping properties of the rubber asphalt layer formed from the composition tend to be improved.

[0027] In the composition according to the present embodiment, when the total mass of the composition is taken as 100 mass%, the sum of the content of the (A) component and the content of the (B) component is preferably 70 to 90 mass%, more preferably 72 to 88 mass%, and particularly preferably 75 to 85 mass%. If the sum of the content of the (A) component and the content of the (B) component is within the above range, the composition can be quickly dried after application to form a film, which may improve workability.

[0028] 1.3. Ammonia (C) The composition according to this embodiment contains ammonia (C). The content of ammonia (C) in the above satisfies the following relationship: That is, when the content of the (A) component is MA [parts by mass], the content of the (B) component is MB [parts by mass], and the content of the (C) component is MC [parts by mass], the value of MC / (MA+MB) is 1×10 -5 ~1×10 -2 The value of MC / (MA+MB) is 2×10 -5~5×10 -3 Preferably, the concentration is 1×10 -4 ~3×10 -3 It is more preferable that the MC / (MA+MB) value in the composition is within the above range, the dispersion stability of the polymer particles (A) and asphalt (B) is improved, resulting in excellent storage stability. In addition, the action of a small amount of ammonia allows the composition to be dried quickly after application to form a film, resulting in good workability.

[0029] The composition according to the present embodiment preferably contains 50 to 600 parts by mass (preferably 100 to 600 parts by mass, more preferably 100 to 500 parts by mass) of MB and 0.002 to 4 parts by mass (preferably 0.004 to 2 parts by mass, more preferably 0.02 to 1 part by mass) of MC relative to 100 parts by mass of MA. When the content ratio of each component in the composition is within the above range, the dispersion stability of the polymer particles (A) and asphalt (B) is improved, resulting in excellent storage stability. In addition, the action of a small amount of ammonia allows the composition to be dried quickly after application to form a film, and the workability is also good.

[0030] The ammonia (C) in the composition according to this embodiment is preferably added to the composition as aqueous ammonia.

[0031] 1.4. Liquid medium (D) The composition according to the present embodiment contains a liquid medium (D). The liquid medium (D) is preferably an aqueous medium containing water, and more preferably water. The liquid medium (D) contained in the composition is preferably added so that the total content of the (A) component and the (B) component is 70 to 90% by mass, and more preferably 75 to 85% by mass, when the total mass of the composition is 100% by mass.

[0032] 1.5. Other Additives The composition according to the present embodiment may contain additives other than the above-mentioned components as necessary, such as emulsifiers, thickeners, fillers, preservatives, pH adjusters, stabilizers, antifoaming agents, vulcanization accelerators, crosslinking agents, and cements.

[0033] <Emulsifier> The emulsifier is not particularly limited, but includes anionic emulsifiers such as potassium oleate, sodium lauryl sulfate, aliphatic soap, rosin acid soap, alkyl sulfonate, dialkylaryl sulfonate, alkyl sulfosuccinate, polyoxyethylene alkyl sulfate, and polyoxyethylene alkylaryl sulfate; and nonionic emulsifiers such as polyoxyethylene alkyl ether, polyoxyethylene alkyl aryl ether, and polyoxyethylene oxypropylene block copolymer, and one or more selected from these can be used. In addition to these, reactive emulsifiers in which an ethylenic double bond is introduced into the structure of a surfactant having a hydrophilic group and a lipophilic group can also be suitably used. Furthermore, amphoteric emulsifiers such as betaine type, and water-soluble polymer protective colloid emulsifiers such as polyvinyl alcohol, modified polyvinyl alcohol (e.g., having a mercapto group at the end), carboxymethyl cellulose, methyl cellulose, and polyvinylpyrrolidone can also be used as necessary.

[0034] <Thickener> Examples of the thickening agent include cellulose compounds such as carboxymethyl cellulose, methyl cellulose, and hydroxypropyl cellulose; ammonium salts of the above cellulose compounds; Examples of the thickener include alkali metal salts, polycarboxylic acids such as poly(meth)acrylic acid and modified poly(meth)acrylic acid, alkali metal salts of the above polycarboxylic acids, polyvinyl alcohol (co)polymers such as polyvinyl alcohol, modified polyvinyl alcohol, and ethylene-vinyl alcohol copolymers, and water-soluble polymers such as saponified copolymers of unsaturated carboxylic acids such as (meth)acrylic acid, maleic acid, and fumaric acid with vinyl esters. Among these, particularly preferred thickeners include alkali metal salts of carboxymethylcellulose and alkali metal salts of poly(meth)acrylic acid.

[0035] Commercially available products of these thickeners include, for example, alkali metal salts of carboxymethylcellulose such as CMC1120, CMC1150, CMC2200, CMC2280, and CMC2450 (all manufactured by Daicel Corporation).

[0036] When the composition according to the present embodiment contains a thickener, the amount of the thickener used is preferably 5% by mass or less, and more preferably 0.01 to 3% by mass, based on the total solid content of the composition.

[0037] <Filler> The composition according to this embodiment may improve the hardness of the film when formed by containing a filler. Examples of the filler include organic fillers and inorganic fillers. Specific examples of the organic filler include polyamide fine particles such as nylon 6, nylon 12, and nylon 66; fluorine-based fine particles such as tetrafluoroethylene and vinylidene fluoride; olefin-based fine particles such as polyethylene and polypropylene; polyester-based fine particles such as polyethylene terephthalate and polyethylene naphthalate; crosslinked particles such as divinylbenzene and polyfunctional acrylates; and rubber fine particles such as natural rubber, isoprene rubber, and acrylic rubber. Specific examples of the inorganic filler include fused spherical silica, fumed silica, sol-gel silica, etc., aluminum oxide, aluminum hydroxide, calcium carbonate, calcium hydroxide, barium sulfate, barium carbonate, magnesium oxide, magnesium hydroxide, talc, mica, etc., and one or more of these can be used.

[0038] <Preservative> The composition according to this embodiment can suppress the growth of bacteria, molds, etc. and the generation of foreign substances when storing the composition by containing a preservative. Specific examples of the preservative include 1,2-benzisothiazolin-3-one, 2-methyl-4,5-trimethylene-4-isothiazolin-3-one, 2-methyl-4-isothiazolin-3-one, 5-chloro-2-methyl-4-isothiazolin-3-one, N-n-butyl-1,2-benzisothiazolin-3-one, 2-n-octyl-4-isothiazolin-3-one, 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one, etc., and one or more of these can be used.

[0039] <pH adjuster> It is preferable to adjust the pH of the aqueous dispersion (latex) of polymer particles (A) used as the raw material to 10 or more by adding a pH adjuster before preparing the composition according to this embodiment. By adjusting the pH to 10 or more, the dispersion stability of the asphalt particles may be improved when preparing the composition according to this embodiment. Examples of such pH adjusters include basic compounds such as sodium hydroxide, potassium hydroxide, ethylenediamine, monoethanolamine, TMAH (tetramethylammonium hydroxide), TEAH (tetraethylammonium hydroxide), and ammonia.

[0040] In the present invention, pH refers to hydrogen ion exponent, and its value is measured under conditions of 25° C. and 1 atmospheric pressure using a commercially available pH meter (e.g., a tabletop pH meter manufactured by Horiba, Ltd.). It can be measured using:

[0041] <Stabilizer> The composition according to the present embodiment may contain a stabilizer. Examples of such stabilizers include anionic, nonionic, cationic, or amphoteric stabilizers. Examples of anionic stabilizers include fatty acid salts, higher alcohol sulfate salts, alkylbenzene sulfonates, and rosin salts. Examples of nonionic stabilizers include alkyl ether type, alkyl ester type, polycyclic phenyl ether type, sorbitan derivatives, glycerin fatty acid ester type, alkylamine type, and alkylamide type.

[0042] Examples of the cationic stabilizer include polyoxyethylene, alkylamine quaternary ammonium salts, alkylbetaines, amine oxides, alkylamine salts, etc. Examples of the amphoteric stabilizer include alkylbetaines, alkylamine oxides, etc.

[0043] <Antifoaming agent> The composition according to the present embodiment may contain a defoaming agent. The defoaming agent serves to prevent foaming during the production of the composition and during processing (application). Examples of the defoaming agent include silicon-based defoaming agents such as mineral oil nonionic surfactants, polydimethylsiloxane oil, ethylene oxide or propylene oxide modified dimethyl silicone or dimethyl silicone emulsion, mineral oil, and alcohol-based defoaming agents such as acetylene alcohol.

[0044] <Vulcanization accelerator> The composition according to the present embodiment may contain a vulcanization accelerator. Examples of the vulcanization accelerator include dithiocarbamic acid compounds, thiuram accelerators, and thiazole accelerators. Among these, dithiocarbamic acid compounds are preferred.

[0045] Examples of dithiocarbamic acid compounds include piperidine pentamethylenedithiocarbamate, pipecoline methylpentamethylenedithiocarbamate, zinc diethylthiocarbamate, zinc di-n-butyldithiocarbamate, zinc ethylphenyldithiocarbamate, zinc butylphenyldithiocarbamate, sodium dimethyldithiocarbamate, sodium diethyldithiocarbamate, zinc butylphenyldithiocarbamate, selenium dimethyldithiocarbamate, etc. Among these, sodium diethyldithiocarbamate and zinc diethylthiocarbamate are preferred.

[0046] <Crosslinking agent> The composition according to the present embodiment may contain a crosslinking agent. Examples of the crosslinking agent include a polyisocyanate compound, an epoxy crosslinking agent, and an oxazoline crosslinking agent. Among these, a polyisocyanate compound and an epoxy crosslinking agent are preferred.

[0047] Examples of the polyisocyanate compound that can be used include aliphatic isocyanates such as trimethylene diisocyanate, tetramethylene diisocyanate, pentamethylene diisocyanate, hexamethylene diisocyanate, and trimethylhexamethylene diisocyanate; alicyclic isocyanates such as 1,3-cyclopentane diisocyanate, 1,4-cyclohexane diisocyanate, 1,2-cyclohexane diisocyanate, isophorone diisocyanate, and norbornane diisocyanate methyl; aromatic isocyanates such as xylylene diisocyanate, 2,4-tolylene diisocyanate, and 2,6-tolylene diisocyanate; and nurate forms thereof; and polymers and mixtures thereof.

[0048] The polyisocyanate compound may also be used in the form of a prepolymer having an isocyanate group at its terminal, which is obtained by reacting the polyisocyanate compound with a polyamine compound, a polyhydric alcohol, or a polyol compound.

[0049] Examples of epoxy crosslinking agents include bisphenol A type epoxy, bisphenol F type epoxy, neopentyl glycol diglycidyl ether, hexanediol diglycidyl ether, trimethylolpropane polyglycidyl ether, hexahydrophthalic acid diglycidyl ester, propylene glycol diglycidyl ether, tripropylene glycol diglycidyl ether, polypropylene glycol diglycidyl ether, fatty acid modified epoxy, diethylene glycol diglycidyl ether, polyethylene glycol diglycidyl ether, glycerin polyglycidyl ether, diglycerin polyglycidyl ether, polyglycerin polyglycidyl ether, and sorbitol-based polyglycidyl ether.

[0050] The content of the crosslinking agent is preferably 0 to 40 parts by mass, and more preferably 0 to 35 parts by mass, based on 100 parts by mass of the polymer particles (A). If the content of the crosslinking agent exceeds 40 parts by mass based on 100 parts by mass of the polymer particles (A), the viscosity tends to change easily over time, and the coatability tends to decrease.

[0051] <Cement> The composition according to the present embodiment may contain cement. The cement is used for the purpose of moisture treatment of the composition. Examples of cement include various Portland cements such as ordinary Portland cement, ultra-high early strength Portland cement, medium heat Portland cement, and sulfate-resistant Portland cement; known cements such as blast furnace cement, silica cement, fly ash cement, alumina cement, solidit, and calcium silicate; and mixed cements made by combining two or more of these. Among these, ordinary Portland cement and alumina cement are preferred.

[0052] The content of cement is preferably 0 to 100 parts by mass, and more preferably 5 to 50 parts by mass, relative to 100 parts by mass of the polymer particles (A). If the content of cement exceeds 100 parts by mass relative to 100 parts by mass of the polymer particles (A), the layer formed by the composition tends to be unable to ensure extensibility when exposed to low temperatures.

[0053] 1.6. Method for producing the composition The composition according to the present embodiment may be prepared by mixing the above-mentioned components, for example, by using the method described in JP-A-2007-332202.

[0054] 1.7. Use of the composition The composition according to the present embodiment can be used, for example, as a waterproofing material for various buildings exposed to sub-freezing temperatures in winter in Hokkaido or the scorching sun in summer in Okinawa, as a water-stopping material, road pavement, vegetation, slope protection, mortar protection material, vibration-damping material, soundproofing material, cushioning material, joint filling material, adhesive, packing material, molded sheet raw material, and the like.

[0055] 2. Working Example The present invention will be described below with reference to examples, but the present invention is not limited to these examples. In the examples, "parts" and "%" are based on mass unless otherwise specified.

[0056] 2.1 Example 1 2.1.1. Preparation of the Composition A 1-L metal container was charged with 0.5 parts by mass of OS soap (manufactured by Kao Corporation, product name "OS Soap", 16% by mass potassium oleate aqueous solution), calculated as potassium oleate, 0.05 parts by mass of a 25% aqueous sodium hydroxide solution (manufactured by Kishida Chemical Co., Ltd.), calculated as sodium hydroxide, and 17 parts by mass of water. While stirring at 1,800 rpm with a lab stirrer (manufactured by Yamato Scientific Co., Ltd., product name "LR400D"), 200 parts by mass of asphalt (manufactured by Cosmo Asphalt Co., Ltd., product name "Straight Asphalt Penetration 80-100") heated and melted at 100°C was added as component (B) and stirred at room temperature for 30 seconds. Then, 100 parts by mass of a 69% aqueous dispersion of styrene-butadiene copolymer particles (manufactured by ENEOS Material Corporation, product name "0561") was added in terms of polymer particles, which is the component (A), and after stirring at 700 rpm for 1 minute, the mixture was further stirred at 500 rpm while cooling with ice water until the temperature reached 40° C. Finally, ammonia water (manufactured by Taisei Kako Co., Ltd., product name "25% aqueous ammonia solution") and water were added as necessary so that the ammonia content was 0.05 parts by mass, thereby obtaining a composition.

[0057] 2.1.2. Stability assessment The composition according to the present invention needs to be stored until it is used at the construction site. Therefore, it is necessary to prevent precipitation or solidification during storage of the composition and store it stably without changing the quality of the composition. Such stability was evaluated by filling 17 kg of the composition into a 18-liter can, sealing it, storing it at 23°C for one week, then removing the composition and visually checking for the presence or absence of precipitate, according to the following procedure. The results are shown in Table 1 below. (Evaluation Criteria) A: No sediment was observed and the storage stability was judged to be very good. B: Although a small amount of sediment was observed, the storage stability was judged to be good because the material can be used in practical application. C: A large amount of sediment was generated, making it impossible to use in practical applications, and the storage stability was determined to be poor.

[0058] 2.1.3.Constructibility evaluation The composition according to the present invention is used by forming a film. In this case, if the film formation is completed in a short time, the workability can be improved. In order to evaluate the workability, the composition is dried for a certain period of time to form a film, and the film is peeled off and the degree of the area remaining on the base surface can be evaluated. Specifically, the evaluation was performed according to the following procedure.

[0059] First, a jig was prepared by attaching a release film (manufactured by PANAC Corporation, product name "SPPET7501BU") to the base surface of a 7 cm x 7 cm mold. Next, 1.5 g of a polyisocyanate compound (manufactured by Tosoh Corporation, product name "Woodcure 300") was added to 170 g of the composition prepared above and stirred for 10 seconds. A mixture of the mixture was then poured at 4 kg / m 2 The film was then poured so that the thickness of the film was 100 mm and left at room temperature for 24 hours. The film was then peeled off from the jig, and the percentage of the area where the film could not be peeled off and where residue was attached (residue attachment area) was calculated to evaluate the workability. The results are shown in Table 1 below. (Evaluation Criteria) A: If the residue adhesion area is 5% or less, the workability is judged to be very good. B: If the residue adhesion area is more than 5% and less than 20%, it is judged that the workability is good because it can be used in practical construction. C: When the residue adhesion area exceeds 20%, the workability is judged to be poor because the material cannot be used in practice.

[0060] 2.2. Examples 2 to 7 and Comparative Examples 1 to 2 Compositions having the compositions shown in Examples 2 to 7 and Comparative Examples 1 and 2 were prepared and evaluated in the same manner as in Example 1 above, except that the types and amounts (parts by mass) of the components contained in the compositions were as shown in Table 1 below. The results are shown in Table 1 below.

[0061] 2.3.Evaluation Results Table 1 below shows the compositions used in each of the examples and comparative examples and the evaluation results.

[0062] [Table 1]

[0063] The abbreviations for each ingredient in Table 1 above represent the following products. <Polymer particles (A)> 0561: Latex containing 69% styrene-butadiene copolymer particles, manufactured by ENEOS Materials Corporation, product name "0561" LANR: UNIMAC Corporation's latex containing 61% natural rubber, product name "LANR" <Asphalt (B)> Straight asphalt: Cosmo Asphalt Co., Ltd., product name "Straight asphalt, penetration 80-100" <Ammonia (C)> Ammonia: Manufactured by Taisei Kako Co., Ltd., product name "25% ammonia aqueous solution"

[0064] According to the evaluation results in Table 1 above, the compositions according to the present invention shown in Examples 1 to 7 had good stability and workability. -5 The composition shown in Comparative Example 1, in which the MC / (MA+MB) value was less than 1.0×10 -2 The composition shown in Comparative Example 2, which exceeded the above range, had good stability but poor workability.

[0065] The present invention is not limited to the above-described embodiments, and various modifications are possible. For example, the present invention includes configurations that are substantially the same as those described in the embodiments (for example, configurations with the same functions, methods, and results, or configurations with the same purpose and effect). The present invention also includes configurations in which non-essential parts of the configurations described in the embodiments are replaced. The present invention also includes configurations that achieve the same effects as the configurations described in the embodiments, or configurations that can achieve the same purpose. The present invention also includes configurations in which publicly known technology is added to the configurations described in the embodiments.

Claims

1. A composition comprising polymer particles (A), asphalt (B), ammonia (C), and a liquid medium (D), When the content of the (A) component is MA [parts by mass], the content of the (B) component is MB [parts by mass], and the content of the (C) component is MC [parts by mass], MC / (MA+MB)=1.0×10 －５ ~1.0×10 －２ The composition.

2. The composition according to claim 1, wherein MB / MA=0.5 to 500.

3. The composition according to claim 1 or claim 2, wherein MB is 50 to 600 parts by mass and MC is 0.002 to 4 parts by mass, relative to MA being 100 parts by mass.

4. The composition according to claim 1 or claim 2, wherein the total content of the (A) component and the (B) component is 70 to 90 mass% relative to 100 mass% of the composition.

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