JP2001311048A - Functional coating composition and cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a functional coating composition capable of presenting functionality for a long time, as its functions such as deodorizing ability, antimicrobial properties and the like, when it is applied on an object substance, are hardly lost and adherence of dirt such as dust, oil, tar and the like is suppressed, as bleeding out of the functional component is suppressed, and destaticizing properties are obtained owing to the ceramic component and provide a product coated with the composition. SOLUTION: This functional coating composition contains a composite particles (AC) consisting of a functional component (A) originating from animals and plants and a ceramic component (C) containing a component at least a part of which is derived from a raw material having aggregating action. The composite particles (AC) are preferably those in which the functional component (A) is composited with the ceramic component (C) by using aggregating force derived from a raw material having coagulating function in the ceramic component (C).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a method of providing excellent deodorizing and antimicrobial properties when coated on an object and bringing the object into contact with water. The present invention relates to a coating composition such as a paint that is sometimes not easily lost. The present invention also relates to a coated body coated with the coating composition.

[0002]

2. Description of the Related Art Catechins exhibit favorable deodorant properties and antimicrobial properties while being components derived from plants. Attempts have been made to incorporate catechins into paints utilizing this property.

(A) JP-A-3-287505 discloses an antifouling paint composition containing catechins as an active ingredient, and generally used plasticizers, coloring pigments, extender pigments, solvents and the like. Can be contained in an arbitrary ratio. Example 1
3 to 18 show data on the antifouling property and bioadhesion when this antifouling paint is applied to a seawater structure (1% together with 25% resin vehicle and 25% rosin in the paint). % Plasticizer, 1% or 2% colloidal silica), Examples 19 to 22 include mold resistance when the antifouling paint is applied to a terrestrial construction (applied to a filter paper in a test). Gender data are also shown.

(B) Japanese Unexamined Patent Application Publication No.
JP-298449A discloses an antibacterial paint containing a film-forming component and tea or a tea component. Here, typical examples of the tea component are tea catechin, tea saponin, and tea tannin. In this application, there is described that "as a carrier, an inorganic substance such as a highly adsorbent clay mineral, a porous substance such as zeolite, and an organic substance imparting granulation properties can be used." FIG. 4 shows an example of a white acrylic paint containing a white pigment.

[0005]

SUMMARY OF THE INVENTION The above-mentioned Japanese Patent Application Laid-Open No.
The invention of JP-287505 A relates to a fouling biological control agent and a fouling prevention coating composition. First, in Examples 1 to 3, extracts are obtained from acacia leaves, cherry leaves, and bancha powder. In Example 4, tea powder is prepared. Then, in Examples 5 to 12, a test was conducted in which the extract or powder prepared in Examples 1 to 4 was dissolved or suspended in dimethyl sulfoxide, diluted with seawater, and dropped at the entrance of the water channel every day for 8 hours. We are studying the amount of organisms attached to the vinyl chloride plates installed in the waterways.

Next, in Examples 13 to 18, the paint prepared by adding the extract or powder prepared in Examples 1 to 4 was applied to a "test steel sheet previously coated with a commercially available antifouling paint". They were immersed in seawater for 24 months to see the area of organisms attached. However, looking at the data in Table 3, the antifouling properties of Examples 13 to 18 are not necessarily better than that of Comparative Example 1, and some of them are inferior to Comparative Example 1. The results shown in Table 3 from tests that depended on contingency, such as biofouling, and varied in the results showed that the worst results were obtained, as is usually the case in this type of evaluation. Example 16
Judging by excluding Example 15 in which the best result was obtained, it is unlikely that there is any significance when the paint containing the extract or powder of Examples 1 to 4 is applied. Rather, since a "test steel sheet to which a commercially available antifouling paint has been applied in advance" is used as a base and the coating is performed thereon, as can be seen from the comparison with Comparative Example 2, the prevention of the base commercial antifouling paint is prevented. It seems that the filth is just playing. In addition, in the tests of Examples 13 to 18, only the study of biofouling is performed.

In Examples 19 to 23, a mold obtained by adding a paint obtained by adding the extract or powder of Examples 1 to 4 to a phthalic acid resin varnish was applied to filter paper and dried to test the mold resistance. However, this test does not provide any knowledge about the durability of the paint when used in applications that come into contact with water. According to the study of the present inventors,
It has been found that when a resin molded article coated with such a paint is washed with water or immersed in water for a while, the mold resistance (and antibacterial property) is drastically reduced.

The antibacterial paint disclosed in the above-mentioned Japanese Patent Application Laid-open No. Hei 10-298459 exhibits good antibacterial properties when the paint is used for applications that do not come into contact with water. When used for the impregnation coating treatment of a filter for water, there is a limit that the tea component which is familiar to water is easily lost only by once washing with water, and the antibacterial property is drastically reduced. Even when a paint is formed in a state where a tea component or the like is supported on a carrier such as a clay mineral or zeolite, only a very small improvement in water resistance can be expected.

In addition, when an antibacterial paint is applied to an object, tea components such as catechin and saponin tend to bleed out and become sticky. Since it does not have a preventive property, contaminants such as dust, oil, tar and the like easily adhere to the coating film surface. Once the contaminants adhere, the microorganisms tend to grow on the organic matter adhering to the contaminants as a bait, and the antibacterial properties of the painted objects tend not to be exhibited as expected even without washing with water.

That is, although this antibacterial paint is suitable for the purpose of obtaining antibacterial properties for a short period of time, it is intended for use in contact with water or for achieving its effect over a long period of time. Is hardly suitable.

<Object of the present invention> Under such a background, the present invention is intended to provide a deodorant property, an antimicrobial property, etc. even when the object is coated so as to come into contact with water. Functionality is not easily lost, and bleed-out of functional components is suppressed, and antistatic properties are also obtained by ceramic components, so that adhesion of contaminants such as dust, oil, tar, etc. is suppressed, and therefore, excellent functions over a long period of time It is an object of the present invention to provide a functional coating composition having excellent properties and to provide a coated body coated with the composition.

[0012]

Means for Solving the Problems The functional coating composition of the present invention comprises: a film-forming component (R); and a functional component (A) derived from animals and plants, at least a part of which has an aggregating action. And a ceramic component (C) containing a component derived from a raw material having the composite particles (AC).

[0013] The coating of the present invention is provided on the surface of the object (1),
On the surface of the object (1), a ceramic component containing a film-forming component (R), and a functional component (A) derived from animals and plants, and a component at least part of which is derived from a raw material having an aggregating action. (C) and a functional coating composition containing composite particles (AC) with (C). The object (1) has an undercoat layer
(3) may be formed.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail.

<< Functional Coating Composition >> The functional coating composition of the present invention comprises: a film-forming component (R); and a functional component (A) derived from animals and plants, at least a part of which has an aggregating action. And a ceramic component (C) containing a component derived from a raw material having the following.

<Coating composition> The coating composition is a general term for paints, varnishes, lacquers, putties and the like, and means a composition for covering an object.
This composition may be any of an organic solvent solution type, an aqueous solution or aqueous liquid type, an emulsion type, a high solid type, a solventless type, a powder coating type, and an active energy ray-curable type.

<Film-forming component (R)> Film-forming component
As (R), for example, acrylic resin, acrylic urethane resin, alkyd urethane resin, silicone resin, polyurethane resin, polyester resin, epoxy resin, polyvinyl acetate resin, ethylene-vinyl acetate copolymer, Styrene-butadiene copolymer, maleated polybutadiene, polyvinyl chloride resin, polyvinylidene chloride resin, polyamide resin, nitrocellulose, nitrocellulose modified acrylic polymer, cellulose acetate butyrate modified acrylic polymer, chloride rubber, activity Examples include energy ray-curable resins, unsaturated polyesters, drying oils, and semi-drying oils. However, these are only examples. In addition to these organic film-forming components, inorganic film-forming components can also be used.

<Functional Component (A)> As the functional component (A), various components can be used as long as they are derived from animals and plants. Representative examples of the functional component (A) include catechins,
Saponins, tea leaf powder, tea leaf extract, tannin (acid),
At least one selected from the group consisting of chitin and chitosan is used, and catechins are particularly important. These are deodorant (deodorizing, odor eliminating, harmful gas component removing, etc.), antimicrobial (antibacterial, bactericidal, bacteriostatic, antifungal, antiviral, etc.) It is a component having functional properties such as allergic properties and antioxidant properties. As the functional ingredient (A), besides, essential oils of various plants,
Extracts of various plants used for crude drugs or herbal medicines can also be used.

Among the above, as the catechins, monomeric or oligomeric catechins are used (theaflavins are also included). A particularly important catechin used in the present invention is a tea-derived catechin preparation having an increased catechin concentration. The main components of tea catechin are epigallocatechin, epigallocatechin gallate, epicatechin, epicatechin gallate, etc., but it is not necessary to isolate it into individual components, so it contains tea catechin consisting of a mixture of these richly Preparations (especially 2
0% or more, preferably 25% or more) can be suitably used as it is. There are 30%, 50%, 60%, 70%, 80%
% Products, 90% products, etc., so that it is easy to obtain. The tea may be not only green tea but also fermented tea such as black tea and semi-fermented tea such as oolong tea. For example, in the case of black tea, various theaflavins (black tea polyphenols) are produced from epigallocatechin, epigallocatechin gallate, epicatechin, and epicatechin gallate during the fermentation process. For example, in the case of oolong tea, a special catechin derivative such as epigallocatechin-4-O-methylgallate is included in addition to the four main catechins. Since catechins are also contained in various plants other than tea, such as Asenyaku, catechins derived from those plants can also be used.

Of the saponins, tea saponin can be obtained by extracting a saponin-containing component from tea leaves or tea seeds using an organic solvent or water, and then repeatedly purifying the extract using a means such as column chromatography. Tea saponins include steroid saponins and triterpenoid saponins, and any of them can be used for the purpose of the present invention. Saponins are a variety of plants other than tea, such as carrots, carrots, soybeans,
Saponins from such plants can also be used because they are also contained in Psycho, Amachauru, Loofah, Onji, Kikyo, Senega, Bakumondou, Mokutsu, Timo, Gossip, Licorice, Sankirai and the like.

As the tea leaf powder or tea leaf extract, there can be used tea powders or extracts such as first-class tea, second-class tea, third-class tea, deep-seasoned rice cake, cap, black tea and oolong tea.

As the tannin (acid), a commercially available purified tannic acid can be used, and an extract of a tannic acid-containing natural plant such as quintet or gallic or a semi-purified product thereof can be used as it is.

As for chitin or chitosan, those having various degrees of acetylation and various molecular weights are commercially available from various companies at present and can be used. Among chitin and chitosan, chitosan is more advantageous in terms of antibacterial properties and ease of complexing with the ceramic component (C).

<Ceramics Component (C)> As the ceramics component (C), silica gel obtained through a hydrous silica gel, a combination of an inorganic sintering aid and an inorganic coagulant, or a ceramic particle-inorganic sintering A combination of an auxiliary and an inorganic coagulant is particularly preferably used.
Since these are ceramic components containing at least a component derived from a raw material having an aggregating action, if these are used, the functional component (A) utilizing the above-mentioned aggregating force is used.
This is because it can be combined with

As the silica gel, a silica gel obtained through a hydrous silica gel is preferably used. At this time, the pH is adjusted by mixing an aqueous solution of a silicate with an acid to form a hydrogel, and the hydrogel is washed with water to remove ions, and then dried to obtain silica gel. As the silicate, sodium silicate represented by Na ₂ O · n SiO ₂ and potassium silicate represented by K ₂ O · n SiO ₂ are used, and the former sodium silicate is particularly important. A concentrated aqueous solution of a silicate is generally called water glass, and a typical commercially available water glass has a SiO ₂ content of 22 to 3%.
8 wt%, Na ₂ O content is 5 to 19 wt%.

As inorganic sintering aids, phosphoric acid, sulfuric acid,
Examples include polyvalent metal salts of inorganic acids such as nitric acid and carbonic acid, and fluorides and silicofluorides of alkali metals and alkaline earth (class) metals. As the polyvalent metal salt, aluminum, zinc, magnesium, calcium, manganese and the like are preferably used, and these are usually used in the form of a hydrate or hydrate dissolved in water.

As the inorganic coagulant, a sol-form or solution-form inorganic coagulant, in particular, a sol-form silicic anhydride or a solution-form silicate (sodium silicate or potassium silicate)
Is preferably used. The sol-form silicic anhydride includes not only ordinary colloidal silica using water as a medium, but also organosilica sol using an organic solvent such as alcohol as a medium.

The ceramic particles in the ceramic particles-inorganic sintering aid-inorganic coagulant include various clay minerals, oxides, hydroxides, composite oxides, nitrides, carbides, silicides, borides, zeolites, and the like. Examples include cristobalite, diatomaceous earth, and polyvalent metal salts of silicic acid.
Examples of clay minerals include kaolin and bentonite. Examples of the oxide include alumina, titania, silica, zirconia, magnesia, and zinc oxide. Among them, zinc oxide itself has a certain deodorizing ability. Examples of the hydroxide include hydroxides of aluminum, zinc, magnesium, calcium, and manganese. An example of a composite oxide is alum. Examples of nitrides are silicon nitride, boron nitride, and the like. Examples of carbides are silicon carbide, boron carbide, and the like. Examples of polyvalent metal salts of silicic acid include aluminum salts, zinc salts, magnesium salts, calcium salts, manganese salts and the like.

In the combination of the inorganic sintering aid and the inorganic coagulant, the ratio of each component is 100 parts by weight of the solid content of the inorganic coagulant and 100 parts by weight of the inorganic coagulant.
Often about 300 parts by weight or more. In the combination of ceramic particles-inorganic sintering aid-inorganic coagulant, the ceramic particles are mainly used, and the inorganic sintering aid and the inorganic coagulant are used in the amounts that exert their respective functions. Parts by weight, the amount of the inorganic sintering aid is about 0.5 to 20 parts by weight in solid content, and the amount of the inorganic coagulant is about 0.5 to 100 parts by weight in solid content.

It is also preferable that a part of the ceramic component (C) is a finely powdered plate-like mineral having low hardness and cleavability. Low hardness is about 3.5 or less in Mohs hardness. The average particle size is 5 μm or less, 2 μm or less, preferably 1.5 μm or less.
The finer the particle, the smaller it is, preferably less than 1 μm, more preferably less than 1 μm, especially on the order of submicrons (less than 1 μm). In particular, ultra fine powder grades on the order of submicrons are recommended. Here, the average particle diameter is measured by a laser diffraction method.

Representative examples of plate-like minerals having low hardness and cleavage properties are talc and mica. However, since it is not easy to make ultrafine powder, various means must be taken when using ultrafine powder grade. And pulverization, or only a fine powder portion of the pulverized material is obtained by classification, so that a particle having a particle size as small as possible is obtained.

Talc is a pulverized ore called talc, and is a white to gray inorganic powder having a slippery, greasy feel. Talc chemical composition, though somewhat different depending origin, basically represented by _{4SiO 2 · 3MgO · H 2 O} . The crystal structure of talc has a three-layer structure in which silicic acid is formed on the surface, silicic acid is formed on the third layer, and magnesia having a hydroxyl group is formed on the second layer. Due to this unique crystal structure, talc has slippery properties, and has the lowest Mohs hardness of 1 among inorganic minerals.

An example of a commercially available product that has been successfully micronized is "SG-2000", a talc having an average particle size of 0.97 μm, manufactured by Nippon Talc Co., Ltd., and a few foreign products are also available. If these are further classified, those having a desired particle size can be prepared. In the talc industry, there is a limit called “3 μm wall”, and it is not easy to obtain talc having an average particle size of less than 3 μm by laser diffraction on an industrial scale. That was impossible until very recently.

As mica, natural or synthetic mica,
More specifically, sericite, muscovite (muscovite), phlogopite (phlogopite), fluorophlogopite, colored mica in which the coloring element is coordinated in the crystal, titanium mica, ultraviolet absorbing mica, and the like can be given. . Mica hardness is about 2.5 to 3.2 in Mohs hardness.

<Composite Particles (AC)> The composite particles (AC) are composed of a functional component (A) derived from animals and plants and a ceramic component (C) containing at least a component derived from a raw material having an aggregating action. ). The composite particles (AC) are obtained by combining the functional component (A) with the ceramic component (C) by utilizing the cohesive force of the component derived from the raw material having an aggregating action in the ceramic component (C). Is particularly preferred.

In producing such composite particles (AC), when the ceramic component (C) is silica gel obtained through a hydrous silicate gel, before and during mixing of the silicate aqueous solution and the acid. Alternatively, the functional component (A) is added before the completion of the gelation reaction after mixing, and the functional component (A) is contained in the silica gel. In this way, the functional component (A)
Can be agglomerated in a state of containing.

The ceramic component (C) is an inorganic sintering aid
When the inorganic coagulant is combined, the ceramic is coagulated while containing the functional component (A). As an example, the functional component (A) is mixed with an aqueous solution of aluminum phosphate as an example of an inorganic sintering aid in the form of a powder or an aqueous solution or an alcohol solution to adjust the pH to 3 to 4.
When the pH of the system is adjusted to a neutral level by mixing a colloidal solution of colloidal silica as an example of an inorganic coagulant, coagulation occurs.The coagulated material is transferred to a crucible or an evaporating dish and dried. Heat treatment until drying in oven or electric furnace.

Even when the ceramic component (C) is a combination of ceramic particles, an inorganic sintering aid and an inorganic coagulant, the ceramic is agglomerated while containing the functional component (A). As an example, aluminum silicate, alumina, an aqueous solution of aluminum phosphate as an example of an inorganic sintering aid is added to ceramic particles such as titania so as to have a viscosity of about a stiffening paste and kneaded,
Subsequently, the functional component (A) is mixed with a powder or an aqueous solution or an alcohol solution (or the functional component (A) is mixed with the ceramic particles, and then the inorganic sintering aid is kneaded). Accordingly, an aqueous solution of aluminum phosphate is additionally mixed, the pH is adjusted to 3 to 4, and a colloidal solution of colloidal silica as an example of an inorganic flocculant is mixed to bring the pH of the system to a neutral level. Since agglomeration occurs, the agglomerate is transferred to a crucible or an evaporating dish and subjected to heat treatment until it is dried in a dryer or an electric furnace.

As described above, in any of the above cases, it is preferable to use a finely powdered plate-like mineral as a part of the ceramic component (C). The composition of the finely powdered plate minerals is a functional component
It is particularly desirable to carry out the method during the step of producing the composite particles (AC) of (A) and the ceramic component (C) or in the pulverizing step after producing the composite particles (AC). However, it can also be added at an appropriate stage in the process of preparing the coating composition.

<Ratio of each component> Although the ratio of each component in the functional coating composition of the present invention is not limited,
In the case of containing an organic solvent or water, the calculation is carried out excluding those medium portions, the composite particles (AC) are 1 to 50% by weight (particularly 2 to 40% by weight), and the remainder is a film-forming component (R). Preferably, there is. When the ratio of the composite particles (AC) is too small, the intended functionality is not obtained.On the other hand, when the ratio of the composite particles (AC) is too large, the coating operation is hindered or the coating after coating is performed. Or the surface condition of the body is reduced.

The functional component (A) occupying the composite particles (AC),
The ratio of the ceramic component (C) is 2 to 2 for the functional component (A).
It is desirable that the content is 60% by weight (especially 3 to 50% by weight) and the remainder is the ceramic component (C). When the ratio of the functional ingredient (A) is too small, the intended deodorant, antimicrobial,
Functionality such as physiological activity and antioxidant properties are not sufficiently exhibited.On the other hand, if the proportion of the functional component (A) is too large, the cost increases and the balance with the ceramic component (C) is lost. Will be. When a crude component is used as the functional component (A), the amount is based on the crude product.

The proportion of the cohesive component in the ceramic component (C) should be at least 3% by weight (particularly 5% by weight or more) of the ceramic component (C), and the weight of the functional component (A). Is preferably at least 5% by weight or more (especially 10% by weight or more).

The proportion of the finely divided plate-like mineral in the ceramic component (C) is often 0 to 30% by weight (particularly 0 to 20% by weight). When no fine powdered mineral is used or its amount is small, the ceramic component (C) or the composite particles (AC) tend to undergo secondary aggregation and have a large particle size. In some cases, within the above range, it is desirable that 1% by weight or more, particularly 2% by weight or more of the ceramic component (C) is a finely powdered plate-like mineral. However, if the proportion of the finely divided plate-like mineral is too large, the balance with respect to the functional component (A) will be lost, and for example, when used in contact with water, the elution of the functional component (A) will be excessive. , And the durability is impaired, so the upper limit should be kept within the above range.

In the coating composition, if necessary,
Auxiliaries effective in improving the anti-agglomeration property or dispersibility, such as metal soap, and metal ion sources (copper salts, iron salts, calcium salts, titanium salts, Aluminum salts, silver salts, tin salts, zinc salts, chromium salts, cobalt salts, etc.), antioxidants, ultraviolet absorbers, coloring agents, lubricants, antistatic agents, matting agents, flow improvers, plasticizers, difficult An auxiliary agent such as a flame retardant can be contained.

When the object (1) is, for example, a fan, a member around a fan, or a member used at an arbitrary location exposed to the flow of air, the surrounding atmosphere comes into contact with a large amount of air, and the object (1) drifts in the atmosphere. Since oil is easily accumulated and adhered, mold tends to grow on the adhered oil. Therefore, in order to further enhance the antifungal property, the above coating composition mainly contains an inorganic antifungal agent, a synthetic antifungal agent, and an organic antifungal agent containing ions such as silver, copper, and zinc. Agents and the like can be used in combination as needed.

If necessary, particles such as fine particles of titanium oxide having a photocatalytic action can be added to the coating composition. At this time, select a film-forming component (R) that is resistant to photocatalysis, or select the surface of the photocatalytic particles themselves so that the film (2) itself is not deteriorated by the particles having photocatalysis. It is preferable to take measures to partially cover the surface with apatite or the like.

<< Coated Body >> The coated body according to the present invention comprises an object (1)
A film-forming component (R); anda functional component (A) derived from animals and plants and a ceramic component (C) containing at least a component derived from a raw material having a cohesive action. A film (2) of a functional coating composition containing composite particles (AC) is formed.

The coating method for forming the film (2) includes a casting method, a brush coating method, a doctor knife method, a roll coating method, a spray coating method, an aerosol injection method, a dipping method, a flow coating method, and a printing method. Various methods including an electrostatic coating method are employed.

The material of the object (1) is not particularly limited (also in shape), and is made of plastics, metal, organic natural products or processed products thereof (wood and bamboo, paper, rush, wisteria, natural fibers, etc.). , Concrete, glass, rock (natural stone, crushed stone, gravel, etc.),
Any of carbon-based substances (coal, coke, charcoal, carbon fiber, etc.) may be used.

Among the object (1), a resin molded product is important. As the resin, polyolefin, polyamide, polyester, acrylic polymer, polycarbonate, polyvinylidene chloride, polyvinyl chloride, polystyrene, A
Examples include BS resin, AS resin, polyurethane, polyvinyl alcohol, synthetic rubber, natural rubber, and cellulose derivatives.

As the molding method at this time, any molding method such as a melt molding method (injection molding method, extrusion molding method, compression molding method, etc.), a solution molding method, an emulsion molding method, a casting method, a foam molding method, etc. A molding method is adopted.

Examples of resin moldings include filaments or secondary products of filaments such as yarns, piles, cotton (cotton), nets, ropes, belts, woven fabrics, nonwoven fabrics and knitted fabrics; films, sheets, containers , Plate; various parts; foam;

Examples of the object (1) from the viewpoint of use include filters (filters for air conditioners, air purifiers, vacuum cleaners, etc.), fans and moldings around the fans, inner wall panels of refrigerators and freezers, and vehicles. Interior materials (seat cloth, ceiling materials, floor materials),
Building materials (pillars, walls, floors, ceiling materials, etc.), indoor interior materials (wall sheets, floor materials, etc.), indoor and vehicle rug materials (mats, carpets, etc.), footwear materials, industrial materials, clothing materials, bedding , Sanitary materials, medical supplies, cosmetic materials (puffs and the like), daily necessities, kitchen supplies, bathroom and toiletry supplies, pet supplies, packaging materials and the like.

Of the object (1) (or the object (1) with the undercoating layer (3)), particularly important ones are a fan and / or a member around the fan or any place where the air flows. It is a member to be used. As fans, air conditioners,
Fans built into air purifiers, vacuum cleaners, deodorizers, humidity controllers, refrigerators, freezers, etc. (plate fans, line flow fans, turbo fans, etc.), fan heater fans,
Built-in fans in electronic equipment such as OA equipment, fans, coolers, vanes of fans, ventilators, circulators that circulate indoor air, and flow-through fans (impellers) of air curtain devices that generate curtain-shaped airflow. can give. As a member around the fan to be used in a portion to which the flow of air from the fan is applied or a member to be used in an arbitrary portion to which the flow of air is applied, for example, a fan guard or a filter of an air conditioner, an air cleaner, a vacuum cleaner, etc. Examples of the filter include a net or nonwoven fabric made of a monofilament such as polypropylene or nylon, and a filter made of an open-cell foam or spunbond of polyurethane.);
Refrigerator inner wall panels, shelves, and partitions; outlets and intakes of air conditioners and air purifiers mounted on vehicles, around the outside air intake system and air cleaners of vehicles; passages and filters for ventilators and air exhaust devices; prevention of oil adhesion to ventilation fans Non-woven fabric or paper; In addition, fins for the cooling mechanism of refrigerators and air conditioners are also important.

The object (1) may have an undercoat layer (3). Representative examples of the undercoat layer (3) are various painted surfaces.

Object (1) or / and undercoat layer
(3) may contain a functional component (A) derived from animals and plants or a composite particle (AC) from which the functional component (A) is more easily released than the above-mentioned coating (2). preferable. This means that as the functional component (A) in the composite particles (AC) contained in the coating (2) is consumed, the functional component (A) and / or the undercoating layer (3) is removed from the target (1). This is because the component (A) is leached and the functional component (A) is automatically supplied to the coating (2).

[0057]

The present invention will be further described with reference to the following examples. “Parts” and “%” are expressed on a weight basis, excluding% of the deodorizing rate. The particle size is measured by a laser diffraction particle size analyzer (“SA-C manufactured by Shimadzu Corporation”).
P3 "). The content (%) in the table is the content based on the film-forming component (R), which is the resin component.

<< Functional Coating Composition and Coated Body >><Preparation of Materials> As a base containing the film-forming component (R), the following clear liquid was prepared.・ (R ₁ ): Resin component of acrylic melamine paint ・ (R ₂ ): Resin component of acrylic paint ・ (R ₃ ): Resin component of silicone resin paint

The following were prepared as the functional component (A).・ (A ₁ ): 30% tea catechin product (epigallocatechin, epigallocatechin gallate, epicatechin and catechin preparation derived from tea having a total amount of epicatechin gallate of about 30%) ・ (A ₂ ): 70% purity・ (A ₃ ): Green tea powder ・ (A ₄ ): Powder dried hot water extract of green tea ・ (A ₅ ): 85% pure tannic acid ・ (A ₆ ): Deacetylation degree Water-soluble chitosan with a viscosity of 480 cps / 20 ℃ with 0.5% aqueous solution at 88.6% or more

The following were prepared as raw materials for the ceramic component (C). The silicate of (C ₁ ) and the colloidal silica of (C ₂ ) and (C ₃ ) are components having an aggregating action.・ (C ₁ ): silicate aqueous solution (water glass) ・ (C ₂ ): aluminum phosphate and colloidal silica ・ (C ₃ ): silica, aluminum phosphate and colloidal silica

The following talc (Mohs hardness: about 1) was prepared as the finely divided plate-like mineral (T) in the ceramic component (C).・ (T ₁ ): Use talc imported from Germany as it is.・ (T ₂ ): Ultra fine talc “SG-
2000 ”(nominal average particle size: 0.97 μm) was classified by sieving to obtain the fine particle side.・ (T ₃ ): Fine powder grade mica

<Production of Composite Particle (AC)> Composite particles of the functional component (A) and the ceramic component (C) were produced as follows. When using fine platelet mineral (T) as a part of ceramic component (C),
At the time of mixing the raw material (C) and the functional component (A), the finely powdered plate-like mineral (T) was added.

(Part 1) Among the raw materials of the ceramic component (C), for the (C ₁ ), the functional component (A) is added to a 1N sulfuric acid solution maintained at 0 ° C., and a 1N water glass solution is separately prepared. did. Then, while vigorously stirring the 1N sulfuric acid solution containing the functional component (A), the 1N waterglass solution was added dropwise over several minutes. The temperature of the reaction solution at this time was 5 to 7 ° C. The mixed solution was washed with running water for one day, then water was removed well, then finely crushed, and vacuum-dried in a drier while applying a temperature of 50 to 60 ° C. to obtain a powdery composite.

(Part 2) As for the raw material of the ceramic component (C), (C ₂ ) was mixed with 200 parts of a 25% aqueous solution of aluminum phosphate and the functional component (A) to adjust the pH to 3 to 3.
The pH was adjusted to 4, and 130 parts of a colloidal silica colloid solution (solid content: 40%) was added and mixed to bring the pH to neutral. Since the slurry gradually aggregated, it was transferred to an evaporating dish (or crucible) while handling was possible, and was heated in a constant temperature drier or an electric furnace, and then 100 to 300
C. and dried. As a result, a hard amorphous aggregate was obtained, which was pulverized with an automatic mortar (or ball mill) and classified with a sieve to obtain a particle having a particle size of 100 to 325 mesh. Next, the particles of this aggregate were subjected to a heat treatment in a thermostatic drier or an electric furnace.

(Part 3) With respect to (C ₃ ) of the raw materials of the ceramic component (C), the functional component (A) is added to 300 parts of silica having an average particle size of 325 mesh under, and the mixture is dry-mixed. Aluminum phosphate aqueous solution with a concentration of 25% 20
A paste was obtained by kneading the mixture harder while adding 0 parts, and a colloidal solution of colloidal silica (solid content 40%) was added to the paste.
%) To bring the pH to neutral. At this point, agglomeration gradually occurred, so the mixture was transferred to a crucible while handling was possible, dried, and then dehydrated and hydrolyzed at 100 to 300 ° C. This was pulverized.

<Preliminary Test> The composite particles (AC) were prepared in the following manner in accordance with the above-mentioned production of composite particles (AC) (1).
I got Tea catechin (A ₁ ) was added to a 1N sulfuric acid solution maintained at 0 ° C., and a 1N water glass (C ₁ ) solution was separately prepared.
Then, with vigorous stirring of 1N sulfuric acid solution containing tea catechins (A _1), a few minutes over 1N water glass (C ₁₎ was added dropwise. At this time, the temperature of the reaction solution was 5 to 7 ° C., and silica was generated. The reaction mixture (composite particles of tea catechin and silica) is wet-pulverized with a test ball mill, and then dehydrated.
Vacuum dried in a drier while applying a temperature of 50 to 60 ° C., washed with running water, dried again, and then finely crushed by a dry method using a test ball mill to obtain a fine powdery functional composition. Was. The ratio of the tea catechin (A ₁ ) in the composite particles (AC) was set to 50%.

In the above reaction, when water glass and tea catechin are mixed, i. Talc is destined to 10% on an external basis relative to the total amount of both (the amount of water glass is based on silica), or ii. 10% of water glass (based on silica) was replaced with talc and mixed. For reference, an experiment was also performed without talc.

<Results> Table 1 below shows the particle size distribution of the raw material talc, and the particle size distribution of the functional component (A) -ceramic component (C) composite particles (AC) when talc was not added and talc was blended. .

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[Table 1]  Particle size distribution  No additive (T ₁ ) (T ₂ )  Raw material talc Average particle size (μm)-0.74 0.47 Maximum particle size (μm)-22 Specific surface area (m^Two/ g)-2.14 4.91 25% particle size (μm)-1.16 0.6575% particle size (μm)-0.54 0.33  Average particle size (μm) 12.82 0.69 0.76 Specific surface area (m^Two/ g) 1.07 4.45 3.14 25% particle size (μm) 10.03 5.36 3.9875% particle size (μm) 1.86 0.29 0.37  10% of silica-substituted product Average particle size (μm) 12.82 0.98 0.90 Specific surface area (m^Two/ g) 1.07 3.33 3.91 25% particle size (μm) 10.03 2.36 2.3775% particle size (μm) 1.86 0.42 0.34

In comparison with the above results, when the talc of (T ₁ ) or (T ₂ ) was added, the particle size distribution of the obtained composite particles (AC) was clearly smaller than that in the case where talc was not added. On the other hand, it can be seen that secondary aggregation is effectively prevented.

Examples 1-2, Comparative Example 1, Comparative Examples 1-2 Using an acrylic melamine-based paint (R ₁ ), the following formulation and the following coating conditions were applied to both sides of an aluminum fan for an air purifier. Painting was performed to obtain a coated fan. Prescription: An acrylic melamine-based paint (R ₁ ) containing a mixture of several kinds of organic solvents as a solvent and containing a small amount of a coating aid, and having a composite particle content of 10% or 20% based on the resin content. Paint with (AC) added ・ Coating method: Hand spray gun coating ・ Baking condition: 140 ° C × 20 minutes ・ Film thickness: 30-40 μm

Table 2 shows the results when the following deodorizing test was carried out using the above coated fan. In addition, Table 3 shows the results of the following tests performed using the above coated fan immersed in water for 5 hours and then air-dried. -Dry operation without a fan.・ Comparative example 1 is the case where only clear paint (R ₁ ) is applied. Comparative Examples 1 and 2 when painted with paint only was added (A ₁₎ to (R _1).

(Deodorizing test) An air purifier that can be operated from the outside was placed in a 1 m ³ container, and the fan prepared above was installed in one corner of the bottom inside, and 5 cigarettes (mild seven) were placed in the container. Is attached to the smoke evacuator and ignited. When the first one burns out, the smoke evacuator is stopped, and when the last cigarette burns out, the operation of the air purifier is started. 5 minutes and 30 minutes after the operation The tobacco odor and ammonia concentration were measured using an odor sensor and a gas detection tube, and the deodorization rate was determined based on how much the concentration after 30 minutes had decreased compared to the concentration after 5 minutes (initial concentration). The value in parentheses is the difference from the standard.

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[Table 2]  Content (%) Deodorization rate after 30 minutes (%)  (AC) (A ₁ ) Tobacco odor Ammonia  Dry operation--4.6 (standard) 41.5 (standard)  Control Example 100 5.4 (0.8) 50.6 (9.1)  Comparative Example 1 0 5 19.4 (14.8) 62.8 (21.3)Comparative Example 2 0 10 25.1 (20.5) 66.2 (24.7)  Example 1 10 5 18.2 (13.6) 61.0 (19.5)Example 2 20 10 23.9 (19.3) 64.1 (22.6)

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[Table 3]  Content (%) Deodorization rate after 30 minutes (%)  (AC) (A ₁ ) Tobacco odor Ammonia  Dry operation--4.5 (standard) 41.3 (standard)  Control Example 1 0 0 5.5 (1.0) 50.3 (9.0)  Comparative Example 1 0 5 6.1 (1.6) 52.6 (11.3)Comparative Example 2 0 10 7.2 (2.7) 53.7 (12.4)  Example 1 10 5 17.9 (13.4) 60.6 (19.3)Example 2 20 10 22.9 (18.4) 62.0 (20.7)  (Note) Content is the initial content before immersion in water.

Tables 2 and 3 show that the film-forming component (R)
In Comparative Examples 1 and 2 in which only tea catechin (A ₁ ) was added, the tea catechin (A ₁ ) was eluted after immersion in water, and the deodorization rate was significantly reduced. On the other hand, in Examples 1 and 2, since tea catechin (A ₁ ) is immobilized as composite particles (AC), the deodorization rate is only slightly reduced by water immersion. Understand.

Examples 3 to 4 and Comparative Example 3 Acrylic paint (R ₂ ) was used under the following formulation and under the following coating conditions, for a fan (or both a fan and a fan guard) for a polypropylene air purifier. Was painted.・ Prescription: A mixture of several kinds of organic solvents is used as a solvent, and a composite particle (AC) is added to an acrylic paint (R ₂ ) containing a small amount of a paint auxiliary so as to be 20% of the resin content. Internally applied paint ・ Coating method: Hand spray gun coating ・ Heat treatment condition: 80 ° C. × 20 minutes ・ Film thickness: 30-40 μm

Table 4 shows the results obtained when the following deodorizing test was carried out using the above coated fan and fan guard.
In addition, the above coated fan and fan guard are
Table 5 shows the results when the same deodorizing test was performed by using a material that was immersed for a period of time and then air-dried.・ Comparative Example 2 is a case where only clear paint (R ₂ ) is applied to both sides of the fan. Comparative Example 3 is a case where only the fan was painted with the paint obtained by adding only (A ₁ ) to (R ₂ ). - Example 3 coated with the coating material added to the fan both sides (R ₂₎ a (AC). In Example 4, both sides of the intake side of the fan and the fan guard were coated with (R ₂ ) to which (AC) was added.

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[Table 4]  Content (%) Deodorization rate after 30 minutes (%)  (AC) (A ₁ ) Tobacco odor Ammonia Control 2 0 0 12.4 (standard) 47.4 (standard) Comparative Example 3 0 10 25.3 (12.9) 62.8 (15.4)  Example 3 20 10 23.6 (11.2) 61.1 (13.7)Example 4 20 10 24.5 (12.1) 61.1 (13.7)

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[Table 5]  Content (%) Deodorization rate after 30 minutes (%)  (AC) (A ₁ ) Tobacco odor Ammonia  Control Example 2 0 0 12.5 (standard) 47.2 (standard)  Comparative Example 3 0 10 13.9 (1.4) 49.0 (1.8)  Example 3 20 10 23.0 (10.5) 60.2 (13.0)Example 4 20 10 23.9 (11.4) 60.1 (12.9)

Examples 5 to 11 and Comparative Example 4 Using an acrylic paint (R ₂ ), according to Example 3, both sides of a fan for a polypropylene air purifier were replaced with (R) and (AC).
Was applied, and then the fan was immersed in water for 5 hours, taken out and air-dried, and the same deodorizing test was performed as described above. Table 6 shows the conditions and results.・ Comparative Example 3 is a case where only clear paint (R ₂ ) is applied to both sides of the fan. Comparative Example 4 is a case where only the fan was painted with the paint obtained by adding only (A ₁ ) to (R ₂ ).

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[Table 6]  Content (%) Deodorization rate after 30 minutes (%) (AC)(AC) (A) Tobacco odor Ammonia Manufacturing methodControl Example 3 0 0 12.6 (standard) 47.0 (standard)  Comparative Example 4 0 10 14.3 (1.7) 49.4 (2.4)  Example 5 20 (A₁) 10 24.2 (11.6) 61.0 (14.0) Part 2 Example 6 20 (A_Two) 10 23.8 (11.2) 60.7 (13.7) Part 1 Example 7 20 (A_Two) 10 23.5 (10.9) 60.4 (13.4) Part 2 Example 8 20 (A_Three) 10 22.5 (9.9) 58.8 (11.8) Part 1 Example 9 20 (A_Four) 10 23.9 (11.3) 60.9 (13.9) Part 3 Example 10 20 (A_Five) 10 22.3 (9.7) 59.1 (12.1) Part 1Example 11 18 (A ₅ ) 8 23.8 (11.2) 56.5 (9.5) Part 1

(Antimicrobial test) Examples 1, 3, 4, 1
The antimicrobial properties of each of the samples cut out from the fans after the water immersion treatment of No. 1 and Comparative Examples 1, 3, and 4 were examined under the following conditions. Table 7 shows the results.・ Test item: bacterial count reduction test ・ Test bacterium: Staphylococcus aureus ATCC 6538P ・ Test method: Use the unified test method.・ Test results: Inoculation count [A] 1.0 × 10 ⁵ log A = 5.0 Unprocessed cloth count [B] 1.6 × 10 ⁷ log B = 7.2 (Standard cotton cloth is used for unprocessed cloth) log B-log A = 2.2> 1.5 (Test is valid) Change = log C-log A Change = (log B-log A)-(log C-log A)

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[Table 7]  Comparative example Example  1 3 4 1 3 4 11  Antibacterial bacterial count log C 6.9 6.9 6.8 3.9 4.0 3.8 3.8 Change 1.9 1.9 1.8 -1.1 -1.0 -1.2 -1.2Change 0.3 0.3 0.4 3.3 3.2 3.4 3.4

Examples 12 to 13 A mixture of several kinds of organic solvents was used as a solvent and mixed with a silicone resin paint (R ₃ ) containing a small amount of a paint auxiliary so as to be 20% of the resin content. Using a paint internally containing body particles (AC), a wire mesh of a fan heater was applied according to Examples 1 and 2. Then, after performing the same deodorizing test as in Examples 1 and 2 using this wire mesh, after soaking in a neutral detergent aqueous solution at 40 ° C. for 10 minutes, the surface was rubbed with a sponge scourer several times, It was dried in the shade. The operation from the deodorizing test to the washing operation was defined as one cycle, and 21 cycles were repeated. Table 8 shows the results. Comparative Example 4 is a case where a coating material to which the composite particles (AC) were not added was used.

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[Table 8]  Content (%) Deodorization rate of tobacco odor after 30 minutes (%)  (AC) (A ₁ ) 1 cycle 11 cycles 21 cycles  Control Example 4 0 32.7 (standard) 32.1 (standard) 29.6 (standard)  Example 12 10 5 50.0 (17.3) 48.1 (16.0) 48.3 (18.7)Example 13 30 15 69.2 (36.5) 70.4 (38.3) 66.7 (37.1)  (Note) Content is the initial content before immersion in water.

Example 14 In Examples 1 to 11 described above, the fine plate-like mineral (T) was used as a part of the ceramic component (C) when producing the composite particles (AC).
Although (T ₁ ), (T ₂ ) or (T ₃ ) mentioned above was part of the ceramic component (C), the functional component (A) and the ceramic component (C) were not used. When about 5 to 10% of the total amount is replaced, the deodorizing rates before and after immersion in water are the same as those in Examples 1 to 11 in the range of error, and the surface condition of the coating film is loupe or low. Microscopic observation of the magnification was clearly smoother than those of Examples 1 to 11.

Embodiment 15 In Embodiments 1, 3, 4, and 11, the fan is mounted on both sides of the fan.
(R) and (AC) are added with paint.
When molding the fan, catechin (A ₁) To 5
Injection molding is performed using pellets containing
Was. At this time, the deodorization rate and antibacterial properties after immersion in water are
The results were almost the same as those in Examples 1, 3, 4, and 11.
The operation of air drying after water immersion was performed 10 times, 20 times.
Deodorization rate and antibacterial properties as repeated 30 times
Thus, the degree of reduction is lower than in the case of Examples 1, 3, 4, and 11.
It was confirmed that it was small. This is because the composite particles
Catechin (A) contained in the form of (AC)₁) Gradually consumed
Catechin (A₁) Is a fan book
This is because it is replenished from the body. Catechin (A
₁) Instead of or in addition to
Tekin (A₁) Containing an undercoat film (3)
When painting with paint that adds (AC) to (R) to (R),
As described above, excellent durability can be obtained.

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When the functional coating composition of the present invention is coated on an object (1) such as a fan, a member around the fan, or a place exposed to the flow of air, the coated composition is washed with water or the like. Even when used in contact with water, functionalities such as deodorant properties and antimicrobial properties are not easily lost.
In addition, the bleed out of the functional component (A) from the coating (2) is suppressed and the ceramic component (C) also provides antistatic properties, so that adhesion of contaminants such as dust, oil, and tar is also suppressed. Therefore, long-term functionality is provided.

If a part of the ceramic component (C) constituting the composite particles (AC) is replaced by fine plate-like minerals such as talc and mica, in addition to the above effects, secondary aggregation of the particles can be prevented. As a result, the effect that the coating film becomes smooth and beautiful is also exerted.

Object (1) and / or undercoat (3)
If the functional component (A) (or the composite particles (AC) from which the functional component (A) is released more easily than the above-mentioned coating (2)) is contained, the coating (2) As the functional component (A) in the composite particles (AC) contained in the base material is consumed, the functional component (A) is leached from the object (1) and / or the undercoat layer (3). Since the functional component (A) is automatically replenished to the coating (2), further excellent durability can be obtained.

Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat II (Reference) C09D 5/16 C09D 5/16 7/12 7/12 (72) Inventor Hiroki Miyamatsu 631 Terashimacho, Hamamatsu City, Shizuoka Prefecture ( 72) Inventor Takami Yoshida 536 Ryuzenji-cho, Hamamatsu City, Shizuoka Pref. HA436 HA446 KA09 KA14 NA02 PB06 PC02

Claims (10)

[Claims] 1. A film-forming component (R), a functional component (A) derived from animals and plants, and a ceramic component (C) containing at least a component derived from a raw material having an aggregating action. A functional coating composition comprising composite particles (AC). 2. The composite particle (AC) is a ceramic component (C).
The functional coating composition according to claim 1, wherein the functional component (A) is combined with the ceramic component (C) by utilizing the cohesive force of a component derived from a raw material having a cohesive action. 3. The animal or plant-derived functional component (A) is at least one component selected from the group consisting of catechins, saponins, tea leaf powder, tea leaf extract, tannin (acid), chitin and chitosan. The functional coating composition according to claim 1. 4. A method according to claim 1, wherein the ceramic component (C) is silica gel obtained through a hydrous silica gel, a combination of an inorganic sintering aid and an inorganic coagulant, or a ceramic particle.
The functional coating composition according to claim 1, which is a combination of an inorganic sintering aid and an inorganic coagulant. 5. The functional coating composition according to claim 1, wherein a part of the ceramic component (C) is a finely divided plate-like mineral having low hardness and cleavability. 6. A film-forming component (R), and a functional component (A) derived from animals and plants, at least a part of which is derived from a raw material having an aggregating action on the surface of the object (1). A coated body characterized in that a coating (2) of a functional coating composition containing composite particles (AC) with a ceramic component (C) containing the component is formed. 7. The covering according to claim 6, wherein the object (1) is a resin molded product. 8. The coating according to claim 6, wherein the object (1) has an undercoat layer (3). 9. The covering according to claim 7, wherein the object (1) is a fan and / or a member around the fan or a member used at a location where air flows. 10. An object (1) and / or an undercoat film layer
(3) The composite particle (AC), wherein the functional component (A) derived from animals and plants or the composite particle (AC) from which the functional component (A) is released more easily than the coating (2) is contained. A coating according to one of the preceding claims.