JP2003268290A - Charcoal coating - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coating containing a charcoal powder derived from plants such as charcoal, bamboo charcoal, straw charcoal, nut charcoal, or the like which is excellent in dispersion stability and can be applied to a wide range of objects such as paper, a cloth and the like thereby to exhibit excellent coating film performances according to the objects. <P>SOLUTION: The charcoal coating comprises a charcoal powder obtained by pulverizing charcoal derived from plants such as charcoal, bamboo charcoal, straw charcoal, nut charcoal and the like by crushing, for example, a polymer emulsion comprising a polymer dispersed in water, a cellulosic water-soluble polymer such as hydroxypropyl methyl cellulose, and an organic solvent such as ethanol and the like. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a charcoal paint containing plant-derived charcoal. More specifically, it relates to an aqueous charcoal paint containing plant-derived charcoal.

[0002]

2. Description of the Related Art Charcoal is an antifungal and insecticidal action that prevents the formation of mold, mites and termites, a deodorizing action that absorbs unpleasant odors such as ammonia and formaldehyde, an action that removes electromagnetic waves generated from home appliances and air. It is known to have excellent functions such as air purifying action that traps positive ions in it to increase the concentration of negative ions, and widely uses charcoal to improve human health and living environment. Is being considered.

Attempts have also been made to pulverize charcoal for utilization, and for example, a technique of applying it for construction as a coating composition containing charcoal powder has been disclosed (Japanese Patent Laid-Open No. 11-29742). Gazette).

These paints are stored in cans and the like,
In use, a method of applying with a brush or the like is adopted. However, the conventional paint has poor dispersibility, and there is a problem that the paint is stirred and dispersed with an electric mixer or the like before application, and then applied. Further, it is also limited to the object to be applied, and it is particularly difficult or even impossible to apply to a metal, a tin plate, a synthetic resin or the like.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object thereof is to be applied to a wide range of objects and to exhibit excellent coating stability depending on the application, and to have excellent dispersion stability. , To provide a paint containing charcoal powder derived from plants such as charcoal.

[0006]

Means for Solving the Problems As a result of intensive studies to solve the above problems, the present inventors have found that a specific water-soluble polymer is added to a water-based coating of a polymer emulsion containing plant-derived charcoal powder. It has been found that the above problems can be solved by adding an organic solvent, and the present invention has been completed.

[0007] That is, the present invention is a plant-derived charcoal powder,
A charcoal paint characterized by containing a polymer emulsion, a cellulose-based water-soluble polymer, and an organic solvent.

The plant-derived charcoal powder is preferably one or more species selected from the group consisting of charcoal, bamboo charcoal, straw charcoal and actual charcoal. Further, the content of the plant-derived charcoal powder is preferably 1 to 40% by mass in the total amount of the charcoal paint.

Further, the polymer emulsion is preferably an acrylic polymer emulsion, and the acrylic polymer is preferably a polymer of a monomer containing an acrylic acid ester and / or a methacrylic acid ester as a main component. Further, the content of the polymer emulsion is preferably 0.5 to 20% by mass as the polymer content in the total amount of the carbon paint.

The cellulose-based water-soluble polymer is preferably hydroxypropylmethyl cellulose. The content of the cellulosic water-soluble polymer is preferably 0.05 to 8.0 mass% in the total amount of the carbon paint.

Further, the organic solvent is preferably ethanol, and the content of the organic solvent is 10 in the total amount of the carbon paint.
It is preferably -80% by mass.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below.

The plant-derived charcoal used in the present invention (hereinafter also simply referred to as charcoal) is not particularly limited, and examples thereof include charcoal obtained by a general method of heating and carbonizing the plant by blocking the air. Can be used. Plants used as raw materials for charcoal include oak, oak, kunugi, red pine, rubber trees, trees such as mangroves, palms, and camellia oil squeezed lees (husks).
However, the present invention is not limited to these.

Charcoal is roughly classified into white charcoal, black charcoal and the like depending on the manufacturing method (firing temperature). White charcoal is produced by baking it at a high temperature of 1000 ° C. or higher, quenching it with charcoal scraped out of a kiln and applying “Sby”, which is a mixture of ash and earth in an appropriate amount of water. Ubamegashi as a representative of white charcoal
There is Bincho charcoal obtained from bamboo and bamboo. On the other hand, black charcoal is oak,
Kunugi, Akamatsu, bamboo, etc. are baked at 400 to 700 ° C., naturally cooled, and taken out from the kiln.

In the present invention, either white charcoal or black charcoal can be used, but it is particularly preferable to use white charcoal alone or a mixture of white charcoal and black charcoal in terms of effects.
The blending ratio of white charcoal and black charcoal can be arbitrarily set according to the purpose. In the present invention, one kind or two kinds or more can be arbitrarily selected and used from the charcoal.

The charcoal powder is obtained by pulverizing the charcoal by pulverization or the like, and the particle diameter of the charcoal powder is preferably 20 to 300 μm in median diameter, more preferably 30 to 100 μm. In the following, all particle diameters are median diameters unless otherwise specified.

The content of charcoal powder is 1 to 40 in the total amount of charcoal paint.
Mass% is preferred. If the content is less than 1% by mass, the charcoal function of the coating tends to be insufficient, and the content of 40%
If it is blended in an amount of more than mass%, the adhesion to the object to be coated tends to be insufficient, and the stability of the coating tends to deteriorate. A particularly preferable content is 10 to 30% by mass.

The polymer emulsion used in the present invention is not particularly limited as long as it is an emulsion in which the polymer is dispersed in water, but a polymer emulsion obtained by emulsion polymerization of a polymerizable monomer is preferable. Emulsion polymerization is performed by a generally known method.

Examples of the monomer for forming the polymer of the polymer emulsion include acrylic monomers such as acrylic acid ester, methacrylic acid ester, acrylic acid and methacrylic acid, vinyl acetate and the like. Examples of the acrylate ester in the acrylic monomer include methyl acrylate, ethyl acrylate, butyl acrylate, hexyl acrylate, octyl acrylate, 2-ethylhexyl acrylate, and the like. Methyl methacrylate, ethyl methacrylate, butyl methacrylate, hexyl methacrylate, octyl methacrylate, 2-ethylhexyl methacrylate and the like can be mentioned. In the present invention, the polymer obtained by polymerizing the monomer may be a homopolymer or a copolymer. Further, it may be a mixture of homopolymers or a mixture of copolymers.

In the present invention, an acrylic polymer is preferable among the polymers of the polymer emulsion,
Particularly, a polymer of a monomer containing an acrylic acid ester and / or a methacrylic acid ester as a main component is preferable. Most preferred is a polymer of a monomer containing ethyl acrylate and / or ethyl methacrylate as a main component. When the acrylic polymer is contained, excellent adhesion to the object to be coated is exhibited, and the charcoal function of the coating film is well exhibited.

Further, the polymer emulsion of the present invention may contain a plasticizer or a film-forming aid for improving the coating film of the polymer when the coating film generally formed in the polymer emulsion is formed. I do not care.

The polymer concentration of the polymer emulsion can be arbitrarily selected, but 20 to 70 mass% is preferable because it is easy to use and the emulsion is stable. In particular, 30-6
0 mass% is preferable. The polymer emulsion of the present invention may be a commercially available product, and examples of the commercially available product are, for example, acrylic polymer emulsions,
Daitozol 5000AD, the same 5000SJ (above, Daito Kasei Kogyo Co., Ltd. make) etc. are mentioned.

Although the content of the polymer emulsion varies depending on the polymer concentration of the emulsion, the polymer emulsion having a polymer concentration of 50% by mass (hereinafter, 50
% Polymer emulsion. 1) to 40% by mass based on the total amount of the charcoal paint. In this range, the polymer content is 0.5 to 20% by mass. 50%
If the content of the polymer emulsion is less than 1% by mass, the adhesion to the object to be coated tends to be insufficient,
Further, if it is blended in an amount of more than 40% by mass, the stability of the coating composition tends to deteriorate, and the function of the charcoal in the coating film tends to deteriorate, such being undesirable. A particularly preferable content of the 50% polymer emulsion is 3 to 30% by mass in the total amount of the carbon paint. This is a polymer content of 1.5 to 15% by mass. Further, the 50% polymer emulsion is preferably blended in the range of 20% by mass to 2% by mass with respect to the charcoal powder. It is more preferably 20% by mass to 1% by mass.
In particular, 20 to 60 mass% is preferable.

In the present invention, a cellulosic water-soluble polymer is further added. By blending the cellulose-based water-soluble polymer, the dispersion stability of charcoal in the paint can be improved, the storage stability can be improved, and the flexibility of the coating film when applied to paper or the like will be excellent. Examples of the cellulosic water-soluble polymer include methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose and the like, as well as mixed ethers of methyl and hydroxypropyl of cellulose (hereinafter also referred to as hydroxypropyl methyl cellulose. Hereinafter, all mixed ethers have this form. .), Hydroxyethylmethyl cellulose and the like having a plurality of substituents. Among the cellulosic water-soluble polymers, methylcellulose, hydroxypropylcellulose and hydroxypropylmethylcellulose are preferable, and hydroxypropylmethylcellulose is particularly preferable.

As the cellulose-based water-soluble polymer, commercially available products can be used, and examples of the commercially available products include, for example, methyl cellulose, Metroze SM-15 and the same-2.
5, Same-100, Same-400, Same-1500, Same-40
00, the same -8000 (above, manufactured by Shin-Etsu Chemical Co., Ltd.), Metrolose 60 which is hydroxypropyl methylcellulose
SH-50, same-4000, same-10000, same 65S
H-50, same-400, same-1500, same-4000,
Same-15000, Same90SH-04, Same-100, Same-
400, the same-4000, the same-15,000 (above, Shin-Etsu Chemical Co., Ltd. make) etc. are mentioned.

The cellulose-based water-soluble polymer may be used alone or in combination of two or more. The content of the cellulosic water-soluble polymer is 0.05-
8.0 mass% is preferable, and 0.1 to 0.1% is more preferable.
It is 5.0 mass%.

In the present invention, an organic solvent is further added. By blending the organic solvent, it is possible to widen the object to be used for coating and to improve the adhesiveness to the object. Examples of the organic solvent include methanol, ethanol, n-propanol, i-propanol, n-butanol, i-butanol, benzyl alcohol, acetone and the like. Of these, aliphatic monohydric alcohols having 1 to 3 carbon atoms such as methanol, ethanol and propanol are preferable, and ethanol is particularly preferable. As the organic solvent, one kind or two or more kinds is arbitrarily selected and used.

The content of the organic solvent is 10 to 10 in the total amount of the charcoal paint.
80 mass% is preferable. It is particularly preferably 30 to 70% by mass.

Further, a monohydric alcohol having 1 to 2 ether bonds in one molecule, which has an appropriate volatility, such as methyl cellosolve or ethyl, as an auxiliary organic solvent for controlling the drying speed of the coating film. Cellosolve, propyl cellosolve (normal, iso, secondary or tertiary), butyl cellosolve, methyl carbitol, ethyl carbitol, diethylene glycol monomethyl ether and the like can be used. It can also be adjusted with water.

In the present invention, a surfactant may be further added. By blending the surfactant, the dispersion stability of the charcoal in the paint can be further improved, and the storage stability is further enhanced, so it is preferable to blend the surfactant.

Examples of the surfactant include anionic surfactants such as fatty acid soap (sodium laurate, sodium palmitate, etc.), potassium lauryl sulfate, triethanolamine ether alkylsulfate, acylmethyl taurine salt; stearyl chloride. Cationic surfactants such as trimethylammonium, benzalkonium chloride, laurylamine oxide; imidazoline-based amphoteric surfactants (2-cocoyl-2-imidazolinium hydroxide-1-carboxyethyloxy disodium salt, etc.), betaine-based Amphoteric surfactants such as surfactants (alkylbetaine, amidobetaine, sulfobetaine, etc.);

Sorbitan fatty acid esters (sorbitan monostearate, sorbitan sesquioleate, etc.),
Glycerin fatty acids (glycerin monostearate etc.), propylene glycol fatty acid esters (propylene glycol monostearate etc.), hydrogenated castor oil derivative, glycerin alkyl ether, POE sorbitan fatty acid esters (POE sorbitan monooleate,
Monostearate polyoxyethylene sorbitan etc.), P
OE sorbit fatty acid esters (POE-sorbit monolaurate, etc.), POE glycerin fatty acid esters (POE-glycerin monoisostearate, etc.), P
OE fatty acid esters (polyethylene glycol monooleate, POE distearate, etc.), POE alkyl ethers (POE2-octyldodecyl ether, etc.),
POE alkyl phenyl ethers (POE nonyl phenyl ether, etc.), Pluronic type, POE / POP
Nonionic surfactants such as alkyl ethers (POE / POP2-decyltetradecyl ether etc.), tetronics, POE castor oil, hydrogenated castor oil derivatives (POE castor oil, POE hydrogenated castor oil, etc.) and the like can be mentioned. One or more surfactants are arbitrarily selected and used.

As the surfactant, a commercially available product can be used, and examples of the commercially available product include, for example, Ionet RAP.
-400, Ionette LEC (above, Sanyo Chemical Industries Ltd. make) etc. are mentioned.

The content of the surfactant when blended is not particularly limited, but is 0.2 to 4.0 mass% in the total amount of the charcoal paint.
Is preferable, and more preferably 0.5 to 2.0 mass%. If it is less than 0.2% by mass, the effect of addition cannot be sufficiently exerted, and if it exceeds 4.0% by mass, the adhesive force of the coating film tends to be weak and peeling tends to occur easily.

If desired, the charcoal coating composition of the present invention may be appropriately blended with other components than the above-mentioned components within a range that does not impair the effects of the present invention. As appropriate compounding ingredients, for example, thickeners, water-soluble polymers other than the above, vegetable tar such as wood vinegar, bamboo vinegar, silica, powders such as sodium silicate, pigments, polyhydric alcohols, ultraviolet absorbers, Examples thereof include sequestering agents, antioxidants, antibacterial agents, preservatives, and fragrances.

The charcoal paint which can be preferably applied in the present invention is very useful because it can be easily applied and various effects of charcoal can be exhibited. There are many examples of use, but for example, building, building repair, rust prevention for steel stairs, etc., prevention of electric contact (aluminum and iron adhesion part, copper and iron adhesion part), base of joint metal (rust prevention), Termite control,
Fence (anti-rust), deodorizing drainage port, drainage net (deodorizing), tanks such as water tanks, sewage, nameplate, door handle, flowerpot (inside; insect control, plant activation), closet,
Frame of sliding doors, screen doors, furniture repair, VOC of furniture, formaldehyde countermeasure, chest, shoe box, storage case, under shelf of PC desk, outlet, switch, electric appliance (electromagnetic wave prevention), electrical cord, fan (Wire mesh), ventilation / air supply filter, ventilation fan air supply duct, air conditioner filter, air conditioner inside (plastic cover part), vacuum cleaner dust bag,

Storage under the kitchen sink cabinet, triangular corners of kitchen (deodorization), grilled fish, barbecue stove (inside), charcoal after barbecue, rice bins (insect repellent, keeping freshness), waste, vegetable bags, vegetables and fruits Freshness preservation, refrigerator insole, refrigerator vegetable room, carpet, rug, moss, etc., curtain (including shower curtain of unit bath), telephone receiver, ashtray (smell removal), portable ashtray, shoe underlay, tie , Laying bags, preventing stuffed animals from smelling, calendars, pictures, automobiles (antistatic doors, under seats), trains (under seats, mesh shelves), bicycle rust prevention, post boxes (rust proof), benches (minus ion) Effect), helmet (inside), kendo armor, hat insole, pet urine odor removal, bird cage wire mesh, hair dye, body odor countermeasure, calligraphy, calligraphy set , In the bag paint sets, but deodorization sheet and the like, but the invention is not limited thereto.

[0038]

EXAMPLES The present invention will be specifically described with reference to the following examples. The blending amount is mass% unless otherwise specified. Prior to the description of the examples, the effect test method used in the present invention will be described.

Test / evaluation method:

(1) Dispersible sample was shaken well and then allowed to stand for 6 months at room temperature, and the workability when the sample after standing was manually stirred with a spatula was evaluated based on the following evaluation criteria. (Evaluation Criteria) ◯: Can be easily stirred by hand and has good dispersibility. X: Stirring cannot be performed by hand (using an electric mixer for stirring), and dispersibility is poor.

(2) After the adhesive sample is sufficiently dispersed, it is applied to an object with a brush in a substantially fixed amount, dried, and then folded, rubbed, and rubbed according to the object.
The rubbing and the like were evaluated based on the following evaluation criteria. (Evaluation criteria) (For folding) O: No cracks were generated. Δ: Some cracks occurred. X: A crack was generated. (Against rubbing) ◯: Charcoal particles did not stick to the finger or the like. Δ: Some charcoal particles were attached to the finger or the like. X: Charcoal particles were attached to the finger or the like. (Rubbing) ○: The coating film of charcoal was not peeled off. Δ: The charcoal coating film was slightly peeled off. X: The coating film of charcoal was peeled off.

(3) Flexibility of paper and cloth After sufficiently dispersing the sample, a brush is applied to the paper and cloth in a substantially fixed amount, and after drying, the flexibility of the paper and cloth applied functionally is evaluated according to the following evaluation criteria. It was evaluated based on. (Evaluation criteria) ○: Soft. Δ: Slightly hard X: Hard.

(4) Surface smoothness After the sample was sufficiently dispersed, an approximately constant amount was applied to the object with a brush, and after drying, the surface smoothness was evaluated based on the following evaluation criteria. (Evaluation Criteria) A: The surface is smooth. Δ: The surface is slightly rough. X: The surface is rough.

(5) Deodorizing effect 280 mm x 135 mm x 110 mm (W x D x H)
Close to the center of the bottom of the polyethylene container that can be sealed
Placed paper disc for antibacterial activity measurement (φ: 8 mm,
1% by mass of ammonia water 1)
00 μL was added and the container was immediately closed. That
Then, the ammonia gas concentration in the container is set to 2 minutes, 12 minutes, 32
Minutes, 62 minutes, over time, 15, 20, 20, 20
The value of p.p.m. was obtained. After 12 minutes, which is the equilibrium value,
20p.p.m. of the blank value (C₀). Then try
After thoroughly dispersing the ingredients, brush the inside of the container (container,
Apply evenly to both lid and dry (use the applied mass after drying)
The same experiment was performed using a container that was 37.1 g)
After 2 minutes, the ammonia gas concentration (C) was measured. In addition,
The ammonia gas detector used is a model manufactured by Gastec
In No. 801, the gas detector tube is No. 801. 3L (scale range; 1-3
0 p.p.m., manufactured by Gastec Co., Ltd.). C above ₀And C
From the value of [(C₀-C) / C₀] × 100 (%) total
The deodorizing ability (deodorizing effect) was calculated.

(6) Breathability An ALC plate having a thickness of 50 mm is installed inside a plastic container having a length, width, and height of 107 mm, 150 mm, and 148 mm at a position 30 mm below the container, and the gap is made of silicone. Sealed with sealant. Below the front of the container 1
A 6φ hole was opened at a position of 5 mm and installed. After sufficiently dispersing the sample, 30 g of the sample was uniformly applied to the surface of the ALC plate with a brush. After the coating film has dried, water is added to about half of the upper space of the container, a vinyl pipe is inserted into the hole in the lower part of the container, and air is fed by an air pump,
Bubbles generated from the surface of the ALC plate after passing through the ALC plate were observed and evaluated based on the following evaluation criteria. (Evaluation Criteria) O: Air bubbles were generated immediately (less than 1 minute) after starting the air pump. X: It took 1 minute or more to generate bubbles after the air pump was started, or they did not occur.

(7) After sufficiently dispersing the water resistant sample, about 0.2 g was evenly applied onto a slide glass (4 cm × 2.5 cm) with a brush, dried for 4 days, and then put in a container filled with water. The peeled state was observed and evaluated based on the following evaluation criteria. (Evaluation Criteria) Good: Water resistance is good without peeling even after 24 hours have passed after immersion in water. Poor: Peeling off within 24 hours after immersion in water and poor water resistance.

Examples 1 to 5 Charcoal paints were prepared by mixing the respective components of the paints having the formulations shown in Table 1. Table 1 shows the same evaluation results
And Tables 2-6. The charcoal powder used was white charcoal (Ubamegashi; Bincho charcoal) (particle diameter: 37 μm).
The acrylic polymer emulsion is Daitozol 5000AD (50% by mass polymer concentration). Hydroxypropyl methylcellulose is Metroose 60SH-10000. The surfactant is Ionette RAP-400. In addition, the coating conditions were two coatings with a brush. The coating area is as follows, and the coating amount is as shown in the table. Commercially available copy paper has an application area of 115 x 105 mm, aluminum foil is 100 x
60 mm, tin plate 190 × 10 mm, synthetic resin polypropylene (PP) 100 × 60 mm, cotton (1
(00%) is 100 x 64 mm, polyester is 100 x
60mm, hemp 100x64mm, wool 100x6
It is 4 mm.

[0048]

[Table 1]

[0049]

[Table 2]

[0050]

[Table 3]

[0051]

[Table 4]

[0052]

[Table 5]

[0053]

[Table 6]

As is clear from the evaluation results of Tables 1 to 6,
It can be seen that all the charcoal paints of the present invention have excellent effects.

Examples of the charcoal paint of the present invention will be further described below. In addition, when the above-mentioned effect test was conducted on these, excellent results were obtained in all cases.

[0056]   [Example 6]       Ingredient amount (1) Charcoal powder 29.0       (White charcoal (Ubamegashi; Bincho charcoal), particle size: 24 μm) (2) Acrylic polymer emulsion (Note 1) 8.0 (3) Hydroxypropyl methylcellulose (Note 2) 0.1 (4) Ethanol 45.8 (5) Water residual (6) Isopropylmethylphenol 0.1 (7) Sodium silicate 0.1 (8) Tourmaline 0.5 (Note 1) Daitozol 5000AD (50 mass% polymer concentration) (Note 2) Metroses 60SH-10000

[0057]   [Example 7]       Ingredient amount (1) Charcoal powder 30.0       (White charcoal (Ubamegashi; Bincho charcoal): Black charcoal (Nara, Kunugi) = 5: 5, Particle size 297 μm) (2) Acrylic polymer emulsion (Note 1) 8.3 (3) Hydroxypropyl methylcellulose (Note 2) 1.0 (4) Hydroxypropyl cellulose 0.5 (5) Ethanol 53.3 (6) Surfactant (Note 3) 1.0 (7) Water residual (8) Isopropylmethylphenol 0.1 (Note 1) Daitozol 5000AD (50 mass% polymer concentration) (Note 2) Metroses 60SH-10000 (Note 3) Ionet RAP-400

[0058]   [Example 8]       Ingredient amount (1) Charcoal powder 26.5       (White charcoal (Ubamegashi; Bincho charcoal), particle size: 37 μm) (2) Acrylic polymer emulsion (Note 1) 7.2 (3) Hydroxypropyl methylcellulose (Note 2) 0.2 (4) Ethanol 57.2 (5) Surfactant (Note 3) 1.5 (6) Water residual (7) Isopropylmethylphenol 0.1 (8) Tourmaline 0.5 (Note 1) Daitozol 5000AD (50 mass% polymer concentration) (Note 2) Metroses 60SH-10000 (Note 3) Ionet RAP-400

[0059]   [Example 9]       Ingredient amount (1) Charcoal powder 23.0       (White charcoal (Ubamegashi; Bincho charcoal): Black charcoal (Nara) = 5: 5, particle size; 37μ m) (2) Acrylic polymer emulsion (Note 1) 7.5 (3) Hydroxypropyl methylcellulose (Note 2) 1.5 (4) Hydroxypropyl cellulose 0.5 (5) Methylcellulose (Note 3) 0.5 (6) Ethanol 59.7 (7) Water residual (8) Isopropylmethylphenol 0.2 (9) Sodium silicate 0.1 (10) Tourmaline 0.5 (Note 1) Daitozol 5000AD (50 mass% polymer concentration) (Note 2) Metroses 60SH-10000 (Note 3) Metroses SM-4000

[0060]   [Example 10]       Ingredient amount (1) Charcoal powder 15.0       (White charcoal (Ubamegashi; Bincho charcoal), particle size: 37 μm) (2) Coconut coconut powder 5.0       (Particle size; 37 μm) (3) Acrylic polymer emulsion (Note 1) 3.0 (4) Acrylic polymer emulsion (Note 2) 4.0 (5) Hydroxypropyl methylcellulose (Note 3) 0.2 (6) Methylcellulose (Note 4) 0.1 (7) Ethanol 49.7 (8) Surfactant (Note 5) 1.0 (9) Water residual (10) Isopropylmethylphenol 0.1 (Note 1) Daitozol 5000AD (50 mass% polymer concentration) (Note 2) Daitozol 5000SJ (50% by mass polymer concentration) (Note 3) Metroses 60SH-10000 (Note 4) Metroses SM-8000 (Note 5) Ionet LEC

[0061]   [Example 11]       Ingredient amount (1) Charcoal powder 10.0       (White charcoal (Ubamegashi; Bincho charcoal), particle size: 37 μm) (2) Straw charcoal powder 5.0       (Black charcoal (straw), particle size: 37 μm) (3) Acrylic polymer emulsion (Note 1) 5.0 (4) Hydroxypropyl methylcellulose (Note 2) 0.4 (5) Ethanol 69.6 (6) Surfactant (Note 3) 1.0 (7) Water residual (8) Isopropylmethylphenol 0.2 (9) Tourmaline 0.5 (Note 1) Daitozol 5000AD (50 mass% polymer concentration) (Note 2) Metroses 60SH-10000 (Note 3) Ionet RAP-400

[0062]   [Example 12]       Ingredient amount (1) Charcoal powder 25.0       (White charcoal (Ubamegashi; Bincho charcoal): Black charcoal (Nara, Kunugi) = 6: 4, particle size ; 37 μm) (2) Acrylic polymer emulsion (Note 1) 7.5 (3) Hydroxypropyl methylcellulose (Note 2) 0.3 (4) Ethanol 44.2 (5) Surfactant (Note 3) 1.0 (6) Water residual (7) Isopropylmethylphenol 0.1 (Note 1) Daitozol 5000SJ (50 mass% polymer concentration) (Note 2) Metroses 60SH-10000 (Note 3) Ionet RAP-400

[0063]   [Example 13]       Ingredient amount (1) Charcoal powder 15.0       (Black charcoal (Kuromatsu), particle size: 50 μm) (2) Acrylic polymer emulsion (Note 1) 5.0 (3) Hydroxypropyl methylcellulose (Note 2) 2.0 (4) Hydroxypropyl methylcellulose (Note 3) 0.5 (5) Hydroxypropyl methylcellulose (Note 4) 0.5 (6) Ethanol 69.7 (7) Surfactant (Note 5) 1.0 (8) Water residual (9) Isopropylmethylphenol 0.2 (10) Tourmaline 0.5 (Note 1) Daitozol 5000AD (50 mass% polymer concentration) (Note 2) Metroses 60SH-10000 (Note 3) Metroses 65SH-15000 (Note 4) Metroses 90SH-4000 (Note 5) Ionette RAP-400

[0064]   [Example 14]       Ingredient amount (1) Bamboo charcoal powder 15.0       (White charcoal (bamboo; Bincho charcoal), particle size: 37 μm) (2) Acrylic polymer emulsion (Note 1) 5.0 (3) Hydroxypropyl methylcellulose (Note 2) 0.2 (4) Ethanol 35.0 (5) Water residual (6) Isopropylmethylphenol 0.1 (7) Tourmaline 0.5 (Note 1) Daitozol 5000AD (50 mass% polymer concentration) (Note 2) Metroses 60SH-10000

[0065]   Example 15       Ingredient amount (1) Charcoal (white charcoal) powder 20.0       (Ubamegashi; Bincho charcoal, particle size: 34 μm) (2) Charcoal (black charcoal) powder 10.0       (Nara, Kunugi, particle size: 34 μm) (3) Acrylic polymer emulsion (Note 1) 9.0 (4) Hydroxypropyl methylcellulose (Note 2) 0.3 (5) 99% ethanol 19.7 (6) Purified water Residual (7) Zinc oxide 0.3 (8) Tourmaline 0.3 (Note 1) Daitozol 5000AD (50 mass% polymer concentration) (Note 2) Metroses 60SH-10000

[0066]   Example 16       Ingredient amount (1) Charcoal (white charcoal) powder 20.0       (Ubamegashi; Bincho charcoal, particle size: 34 μm) (2) Charcoal (black charcoal) powder 10.0       (Nara, Kunugi, particle size: 34 μm) (3) Acrylic polymer emulsion (Note 1) 10.0 (4) Hydroxypropyl methylcellulose (Note 2) 0.7 (5) 99% ethanol 14.0 (6) Isopropyl alcohol 34.0 (7) Purified water Residual (8) Silica 1.0 (9) Tourmaline 0.5 (Note 1) Daitozol 5000AD (50 mass% polymer concentration) (Note 2) Metroses 60SH-10000

[0067]

As described above in detail, according to the present invention,
It is possible to obtain a coating material containing charcoal-derived plant-derived charcoal powder, which can be applied to a wide range of objects and has excellent dispersion stability that exhibits an excellent coating function depending on the object.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hajime Koizumi             2-1-9 Higashi Sumida, Sumida-ku, Tokyo             Within Azole Industry (72) Inventor Akira Hoshio             2-1-9 Higashi Sumida, Sumida-ku, Tokyo             Within Azole Industry F-term (reference) 4J038 BA022 BA092 CG001 CG141                       HA026 KA06 MA08 MA10

Claims (10)

[Claims] 1. A charcoal paint comprising a plant-derived charcoal powder, a polymer emulsion, a cellulosic water-soluble polymer, and an organic solvent. 2. The charcoal paint according to claim 1, wherein the plant-derived charcoal is one or more selected from the group consisting of charcoal, bamboo charcoal, straw charcoal and actual charcoal. 3. The charcoal paint according to claim 1, wherein the content of the plant-derived charcoal powder is 1 to 40% by mass based on the total amount of the charcoal paint. 4. The charcoal paint according to any one of claims 1 to 3, wherein the polymer emulsion is an acrylic polymer emulsion. 5. The charcoal paint according to claim 4, wherein the acrylic polymer is a polymer of a monomer containing an acrylic acid ester and / or a methacrylic acid ester as a main component. 6. The charcoal paint according to any one of claims 1 to 5, wherein the content of the polymer emulsion is 0.5 to 20% by mass based on the total amount of the charcoal paint as a polymer content. 7. The charcoal paint according to any one of claims 1 to 6, wherein the water-soluble cellulose-based polymer is hydroxypropylmethyl cellulose. 8. The charcoal paint according to any one of claims 1 to 7, wherein the content of the cellulosic water-soluble polymer is 0.05 to 8.0 mass% in the total amount of the charcoal paint. 9. The charcoal paint according to any one of claims 1 to 8, wherein the organic solvent is ethanol. 10. The content of the organic solvent is 10 in the total amount of the charcoal paint.
The charcoal paint according to any one of claims 1 to 9, which is -80% by mass.