JP2017206653A - Deodorizing painted film and method for film-forming deodorizing painted film, and deodorizing surface-possessing equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a deodorizing painted film in which the deodorizing and antibacterial effect can be enhanced.SOLUTION: The deodorizing painted film contains a particle A comprising a pH-sensitive polymer soluble in an acidic region and an inorganic antibacterial agent included in the pH-sensitive polymer, and a particle B comprising a pH-sensitive polymer soluble in a basic region and an inorganic antibacterial agent included in the pH-sensitive polymer, and a water-based coating agent in which the particle A and particle B are dispersed in an aqueous dispersion solution containing a cellulose derivative and highly branched cyclic dextrin, solidifies to adhere on the surface to be coated.SELECTED DRAWING: None

Description

  The present invention relates to a deodorizing coating film having a deodorizing and antibacterial effect, a film forming method for the deodorizing coating film, and a deodorizing surface holding equipment.

  For example, in toilet facilities in factory buildings such as pharmaceuticals and foods, the manufactured product is taken or eaten or consumed from the mouth or the like. For this reason, it is important to prevent contamination of the product by microorganisms such as bacteria and viruses from inside the person and the toilet. Further, deodorizing measures are indispensable in order to create a comfortable environment for odor generated by urination or defecation in the toilet facilities.

  Conventionally, with regard to deodorant coating, Patent Document 1 discloses a paint containing a liquid component containing a fibrous material containing an inorganic pigment and ceramic powder, for example, a paint obtained by kneading and diffusing lime, diatomaceous earth and an inorganic pigment in milk. An anti-odor coating material that absorbs and blocks odors from building materials and odors emitted from organic coating materials by applying on an organic coating film is disclosed. Further, in Patent Document 2, as a method for preventing urinary stone adhesion of flush toilet equipment, a chemical solution injection device is attached to a urinal water supply pipe, and a chemical solution having a predetermined concentration is predetermined for each wash water amount. In such a case, it has been disclosed to prevent urine stone adhesion, disinfection, deodorization, etc. by injecting a fixed amount at a ratio of

JP 2001-219118 A JP 2003-155768 A

However, the above-mentioned deodorant paint absorbs and blocks odors from building materials and odors emitted from organic paints when applied on a strong odor organic coating film. That is, the object is to absorb and block odors from the object to be coated and the paint itself. For this reason, the deodorizing effect does not reach a wide area from the ceiling, the wall surface, the floor inside the building to the equipment in the building. In addition, the above-described method for preventing urinary stone adhesion of flush-type urinal equipment reliably prevents urinary stone adhesion to the urinal equipment by accurately maintaining a pH suitable for preventing urine stone adhesion. Suppresses corrosion of toilet facilities and drains. That is, it is intended only for the prevention of urine stone adhesion. For this reason, there is no direct deodorizing effect or antibacterial effect.
The ceilings, floors, booth walls and toilets of toilet facilities, waste disposal facility equipment, drains, drains, garbage trucks, etc. are easily contaminated by odors, bacteria, viruses, etc.
Conventionally, in such equipment, the odor has been dealt with by a commercially available deodorant or the like. In addition, microbial contamination was dealt with by regular cleaning.
Therefore, in particular, the equipment described above has improved deodorization and antibacterial effects from the standpoint of preventing contamination by microorganisms such as bacteria and viruses, as well as taking measures against deodorization, as well as reducing the effort of distributing deodorant and periodic cleaning. There is a request.

  This invention is made | formed in view of the said condition, The objective is to provide the deodorizing coating film which can improve a deodorizing and antimicrobial effect.

Next, means for solving the above-described problem will be described corresponding to the embodiment.
The deodorizing coating film according to claim 1 of the present invention is a particle A composed of a pH-sensitive polymer that dissolves in an acidic region and an inorganic antibacterial agent included in the pH-sensitive polymer,
A particle B composed of a pH-sensitive polymer that dissolves in a basic region and an inorganic antibacterial agent included in the pH-sensitive polymer,
An aqueous coating agent in which the particles A and the particles B are dispersed in an aqueous dispersion solution containing a cellulose derivative and a highly branched cyclic dextrin is solidified and attached to the application surface.
Deodorized paint film.

  In this deodorized coating film, the acidic odor is trapped via a pH sensitive polymer that is an acidic and soluble coating agent. The alkaline odor is trapped through a pH sensitive polymer which is a basic and soluble coating agent. That is, a deodorizing coating film is formed using one coating material instead of separately for alkaline odor and acidic odor. Thereby, the deodorizing coating film can obtain a deodorizing effect of a wide range of odors by an easy film forming operation. Furthermore, since the particle A and the particle B contain an inorganic antibacterial agent such as silver zeolite, the deodorizing coating film can further exhibit the antibacterial effect due to this in addition to the deodorizing effect.

In the deodorizing coating film according to claim 2 of the present invention, the highly branched cyclic dextrin is cyclodextrin or cluster dextrin,
The pH sensitive polymer that dissolves in the acidic region is aminoalkyl methacrylate copolymer E, polyvinyl acetal diethylaminoacetate,
The pH-sensitive polymer that dissolves in the basic region is methacrylic acid copolymer LD, hydroxypropylmethylcellulose phthalate,
The deodorizing coating film according to claim 1.

  With this deodorizing coating film, a firm coating can be formed. Moreover, it becomes a beautiful film. Furthermore, since the deodorized coating film has a fine porous coating structure, the deodorizing effect and the antibacterial effect gradually develop over time.

In the method for forming a deodorized coating film according to claim 3 of the present invention, an inorganic antibacterial agent is dispersed in a suspension obtained by adding a surfactant to a pH sensitive polymer that dissolves in an acidic region to obtain an aqueous dispersion. And then spray dried to obtain particles A,
An inorganic antibacterial agent surface-treated with an organic acid is dispersed in a suspension of a pH-sensitive polymer that dissolves in a basic region to obtain an aqueous dispersion, and then spray-dried to obtain particles B.
The particle A and the particle B are uniformly dispersed in an aqueous dispersion containing an ethylcellulose aqueous suspension, hydroxypropylmethylcellulose (HPMC), cyclodextrin or cluster dextrin components to obtain an aqueous coating agent,
After applying the aqueous coating agent, it is solidified on the surface to be coated by heat treatment to form a film.
Deodorizing coating film forming method.

  In this deodorizing coating film forming method, the deodorizing coating film can be formed with a firm coating. Moreover, a deodorizing coating film can be formed with a beautiful coating film. Furthermore, by using HPMC, since the deodorizing coating film has a porous coating structure, it is possible to form a deodorizing coating film that maintains the deodorizing effect and antibacterial effect for a long time.

The deodorizing surface possessing equipment according to claim 4 of the present invention includes an odor contact member having a surface in contact with the odor,
And a deodorizing coating film covering at least a part of the surface,
The deodorizing coating film is
Particles A obtained by dispersing an inorganic antibacterial agent in a suspension obtained by adding a surfactant to a pH-sensitive polymer that dissolves in an acidic region to obtain a water-dispersed solution, and then spray-drying particles A;
A dispersion of an inorganic antibacterial agent surface-treated with an organic acid in a suspension of a pH-sensitive polymer that dissolves in a basic region to obtain an aqueous dispersion, and then spray-dried particles B.
An aqueous coating agent in which the particles A and the particles B are dispersed in an aqueous dispersion solution containing a cellulose derivative and a highly branched cyclic dextrin is solidified and attached to the application surface.
Equipment with deodorizing surface.

  In this deodorizing surface possession equipment, for example, in toilet facilities, all the toilet walls (both large and small), wall surfaces, ceilings, floors, and other inner walls of toilet booths are coated with a coating material having deodorizing and antibacterial effects. The Thereby, it becomes possible to express the deodorizing effect and the antibacterial effect in almost the area where the odor comes into contact. As a result, a high deodorizing effect and an antibacterial effect can be obtained in equipment having a deodorized surface.

  According to the deodorizing coating film of the first aspect of the present invention, the acidic odor is trapped via the pH sensitive polymer which is an acidic and soluble coating agent. The alkaline odor is trapped through a pH sensitive polymer which is a basic and soluble coating agent. That is, a deodorizing coating film can be formed with one coating material which can deodorize both alkaline odor and acidic odor. Thereby, the deodorizing coating film can obtain a deodorizing effect of a wide range of odors by an easy film forming operation. Moreover, since the particle | grains A and particle | grains B contain an inorganic type antibacterial agent, in addition to a deodorizing effect, an antibacterial effect by this can be made to express further in a deodorizing coating film. These odors are formed by forming a deodorizing coating on the ceilings and floors of toilet facilities, booth walls, toilets, etc., and equipment and drains, drains, and garbage trucks in garbage disposal sites. Traps and enhances deodorization and antibacterial effects.

  According to the deodorizing coating film of the second aspect of the present invention, a film can be formed using a coating material that reacts with each of a basic odor and an acidic odor and dissolves easily. Thereby, a basic odor and an acidic odor can be trapped and deodorized, respectively.

  According to the film formation method of the deodorizing coating film of Claim 3 which concerns on this invention, the deodorizing coating film which maintains a deodorizing effect and an antimicrobial effect over a long period of time can be formed easily.

  According to the deodorizing surface possessing equipment according to claim 4 of the present invention, it is possible to trap odors and obtain an equipment space and equipment having a good environment. In addition, the antibacterial action can suppress contamination of humans and equipment, for example, people from inside the toilet or microorganisms such as viruses and the inside of the equipment. In other words, in the environment that is easily contaminated by odors, bacteria, viruses, etc., such as toilet ceilings, floors, booth inner walls and toilets, garbage disposal equipment, drains, drains, and garbage trucks Can be suppressed.

Embodiments according to the present invention will be described below.
[Deodorized paint film]
The deodorizing coating film of this structural example is formed and formed on the surface of the odor contact member in the deodorizing surface possessing equipment. Deodorized surface possessing equipment includes equipment and equipment. Examples of the facilities include a toilet, a garbage collection place, a cooking place, and a medical facility. Examples of equipment include toilet bowls, garbage disposal machines, garbage trucks, cooking machines, faucets, drains, drains, and medical instruments.

  The odor contact member also includes members used in the above facilities and equipment, for example, the ceiling, floor, and booth inner wall of toilet facilities. More specifically, the odor contact member is made of concrete, cement, gypsum, calcium silicate, calcium carbonate, other inorganic base materials such as ceramic base materials and glass, or iron, aluminum, stainless steel, other metal materials, Or organic base materials, such as wood, a synthetic resin material, paper, and a fiber, are included.

  In the deodorized surface holding equipment, the odor comes into contact with the surface of the odor contact member. The deodorizing coating film is coated on at least a part of the surface of the odor contact member.

  The deodorizing coating comprises particles A composed of a pH-sensitive polymer that dissolves in the acidic region and an inorganic antibacterial agent included in the pH-sensitive polymer, a pH-sensitive polymer that dissolves in the basic region, and a high pH-sensitive polymer. And particles B composed of an inorganic antibacterial agent included in the molecule. The deodorizing coating film is obtained by solidifying an aqueous coating agent in which the particles A and B are dispersed in an aqueous dispersion solution containing a cellulose derivative and a highly branched cyclic dextrin, and is applied to the surface to be coated.

  The pH-sensitive polymer that dissolves in the acidic region constituting the deodorized coating film is preferably aminoalkyl methacrylate copolymer E (trade name: Eudragit EPO) or polyvinyl acetal diethylaminoacetate.

  The inorganic antibacterial agent is preferably silver zeolite having a deodorizing and antibacterial action. Silver zeolite is known to perform sterilization and deodorization. For example, Zeomic (registered trademark: Sinanen Co., Ltd.) is used.

  Moreover, it is preferable that the pH sensitive polymer which melt | dissolves in the basic area | region which comprises a deodorizing coating film is methacrylic acid copolymer LD (brand name: Eudragit L30D-55) and hydroxypropyl methylcellulose phthalate. In addition, hydroxypropyl methylcellulose phthalate (HPMCP) is easily dissolved in the range of pH 5 to pH 5.5 depending on the substitution degree of the phthalyl group.

  The deodorizing coating film is acidic and dissolves even in alkali (basic). Regarding deodorization, the alkaline odors of ammonia and amines are dissolved in the basic pH-sensitive polymer of the particle B, and the acidic odors of hydrogen sulfide and butyric acid are dissolved in the acidic pH-sensitive polymer of the particle A, respectively. The odor is trapped. These particles have a structure in which silver zeolite is coated in a film form so as to react with each of alkali and acid. This is a structure in which a pH-sensitive polymer is wrapped around a known cyclodextrin or silver zeolite as a coating material. As a result, the pH-sensitive polymer as the coating material dissolves and reacts with an acidic odor or an alkaline odor, and traps, that is, traps these odors.

<Highly branched cyclic dextrin>
The highly branched cyclic dextrin constituting the deodorized coating film is preferably a cyclodextrin or cluster dextrin (Ezaki Glico Co., Ltd .: registered trademark) having a deodorizing action. Cluster dextrin has a cyclic structure, and a deodorizing effect can be obtained by trapping the odor in the ring.

  By the way, antibacterial is defined as “a state that suppresses bacterial growth on the surface of a product” (JIS Z 2801 (ISO22196)). Antibacterial agents make bacteria difficult to live by allowing them to live only for a certain period of time or not to grow any longer. Thus, an antibacterial agent does not kill or reduce bacteria, but suppresses proliferation. That is, the deodorizing coating film can reduce the number of objects such as objects and liquids, and the number of microorganisms contained in a limited space, and can increase the cleanliness.

  A highly branched cyclic dextrin is composed of a dextrin reduced in size by hydrolyzing a part of starch that is formed by, for example, binding of a large number of glucoses, and has a cyclic part in the structure. It has a lot of branches. This highly branched cyclic dextrin has the following characteristics. It is also easily digested by digestive enzymes in the body. That is, the safety to the human body is high. Narrow molecular weight distribution compared to other dextrins. High solubility in water and well soluble in cold water. That is, the work of coating (coating film formation) becomes easy. Good stability, hard to age and low viscosity. Because it is a polymer and has a uniform molecular weight, it hardly generates osmotic pressure. There is almost no miscellaneous taste or sweetness, and there is no powdery odor derived from starch. This highly branched cyclic dextrin can be produced, for example, by allowing a branching enzyme, which is an enzyme, to act on corn starch.

  Cyclodextrin is a kind of cyclic oligosaccharide in which several molecules of D-glucose are linked by α-glucoside bonds to form a cyclic structure. Cyclodextrins are known to have 5 or more glucose bound thereto. In general, 6 to 8 glucoses are bound, each having 6 bonds is α-cyclodextrin (cyclohexaamylose), and 7 are bound to β-cyclodextrin ( Cycloheptaamylose), which has 8 bonds, is called γ-cyclodextrin (cyclooctaamylose).

  The cyclodextrin can be obtained by allowing cyclomaltodextrin glucanotransferase extracted from bacteria such as Bacillus, Brevibacterium, and Corynebacterium to act on starch. That is, it can be obtained by active decomposition of starch. Cyclodextrins are stable to bases and much more stable to acids than starches and other oligosaccharides. Also, degradation by α-amylase is considerably slower than starch. It is not degraded by β-amylase. It is also quite stable against heat and stable even when heated to about 200 ° C. The solubility of cyclodextrin in water is 14.5 g / 100 ml for α form, 1.8 g / 100 ml for β form and 23.2 g / 100 ml for γ form at 25 ° C., and β form has low solubility.

  The inside of the cyclic structure of cyclodextrin is a pore that is large enough to include other relatively small molecules. Since the hydroxy group of cyclodextrin is outside the pores, the inside of the pores is hydrophobic, and it is easy to include hydrophobic molecules. By utilizing this, a hydrophobic substance can be included in cyclodextrin so as to be dissolved in water, or a substance that easily reacts with water or oxygen can be protected.

[Deodorization Coating Method]
The film formation method of the deodorizing coating film of this configuration example is roughly obtained by dispersing an inorganic antibacterial agent in a suspension obtained by adding a surfactant to a pH sensitive polymer that dissolves in an acidic region to obtain an aqueous dispersion solution. After that, the particles A are obtained by spray drying. In addition, an inorganic antibacterial agent surface-treated with an organic acid is dispersed in a suspension of a pH-sensitive polymer that dissolves in a basic region to obtain an aqueous dispersion, followed by spray drying to obtain particles B. Next, the particles A and the particles B are uniformly dispersed in an aqueous dispersion containing an ethyl cellulose aqueous suspension, a component of hydroxypropylmethylcellulose, cyclodextrin or cluster dextrin to obtain an aqueous coating agent as a coating material. And after apply | coating this water-system coating agent on the surface of an odor contact member, it solidifies on a to-be-coated surface by heat processing, and forms a deodorizing coating film.

<Particle A>
More specifically, the deodorized coating film is obtained by coating (coating) a coating material having a deodorizing effect and an antibacterial action on the surface of the odor contact member. The coating material includes particles A composed of a coating agent (for example, Eudragit EPO) that dissolves in an acidic region of pH and silver zeolite. Specifically, Eudragit EPO: 100 parts, sodium lauryl sulfate: 10 parts, stearic acid: 15 parts and talc: 35 parts are made into a uniform suspension with water: 240 parts. Silver zeolite is dispersed here to produce a uniform aqueous dispersion. This water-dispersed solution is made into the solid particle A used as the structure by which Eudragit EPO was included in the silver zeolite using the spray-drying apparatus.

<Particle B>
Further, the coating material includes particles B composed of a coating agent (for example, Eudragit L30D-55) whose pH is dissolved in a basic region and silver zeolite which has been surface-treated with an organic acid (for example, succinic acid) in advance. To do. Specifically, Eudragit L30D-55: 100 parts, triethyl citrate; 20 parts and talc: 50 parts are made into a uniform suspension solution with water: 100 parts. The silver zeolite surface-treated with an organic acid is dispersed here to produce a uniform aqueous dispersion. This water-dispersed solution is made into the solid particle B used as the structure by which Eudragit L30D-55 was included by the silver zeolite using the spray-drying apparatus.

  The coating material is an aqueous suspension of ethyl cellulose (as the water-insoluble polymer, for example, ethyl cellulose (particularly ethyl cellulose aqueous dispersion (for example, trade name: Aquacoat, manufactured by FMC)). )), Hydroxypropyl methylcellulose (HPMC) and a water-based coating agent uniformly dispersed in an aqueous dispersion containing cyclodextrin or cluster dextrin components.

  The film forming method of the deodorizing coating film is applied to the odor contact member using this water-based coating agent, and then formed into a film on the surface of the odor contact member by a heat treatment (for example, at 65 ° C. for 10 minutes) and solidified. A deodorized coating film is obtained. For the application, painting means such as brush coating, spraying, dipping, roll coating, and printing can be used. The application can be performed once or several times, that is, a multi-layer structure can be formed. Since it is applied as a coating material, a stable coating film is formed by applying heat to the coating material in the coating film state. The heat treatment is after painting and can be performed by using an instrument such as a dryer.

<Spray drying>
In the spray drying for obtaining the solid particles A and the solid particles B, the above-mentioned aqueous dispersion solution is sprayed into a gas and rapidly dried to produce a dry powder. In this configuration, high-temperature (about 250 ° C.) air is used as the gas used for drying of the spray drying apparatus. Spray drying is also referred to as spray drying or spray drying, and is preferred when drying materials that are easily damaged by heat, such as foods and pharmaceuticals. Moreover, spray drying can obtain a stable particle size distribution. Spray drying can be used as a drying medium by heating air. Therefore, the film formation cost can be reduced. In addition, spray drying may use nitrogen gas or the like as a drying medium when a flammable liquid such as ethanol is used as a solvent or an oxygen-sensitive product. For spray drying, a droplet size of 10 to 500 μm can be selected depending on the application. Note that the deodorizing coating film of this configuration example may be one in which a solution or suspension is solidified by evaporation without being particularly heated after the liquid stream is applied by spraying. By this spray drying, particles in which the pH-sensitive polymer is coated on the surface of the silver zeolite, that is, particles in which the silver zeolite is included in the pH-sensitive polymer are obtained.

[Deodorized surface equipment]
For example, in toilet facilities that are deodorized surface possession equipment, toilets (both large and small), wall surfaces, ceilings, floors, and the inner walls of toilet booths are coated with the above-mentioned coating materials having deodorizing and antibacterial effects, That is, it paints and forms a coating film. In other words, it is used for all toilet facilities. It is also used for tiles that are used as materials for toilet walls and floors.

Next, the operation of the above configuration will be described.
The deodorizing coating film is coated on the surface of the odor contact member with a coating material containing a component having a deodorizing effect. The coating that is the coating surface is performed using a single coating material instead of separately, such as dedicated to alkaline odor or acidic odor. That is, the coating material has a deodorizing effect on both an alkaline odor and an acidic odor.

  The coating material further contains cyclodextrin or cluster dextrin having a deodorizing effect. HPMC used as glue or binder is soluble in water. This acts as a glue and stabilizes the suspended matter without precipitating. That is, a solution in which the particles A and the particles B are dispersed is obtained. Thereby, the deodorizing coating film formed by coating traps odor. Moreover, the deodorizing coating film is blended with the coating material together with a component having an antibacterial effect. Therefore, an antibacterial action can also be expressed.

  In the film formation method of the deodorizing coating film, the deodorizing coating film is formed with a firm film by a cellulose derivative such as ethyl cellulose. Moreover, the film formation method of a deodorizing coating film turns a deodorizing coating film into a beautiful film by applying heat. By using HPMC, the deodorizing coating film dissolves HPMC by contact with water or water vapor (humidity), and has fine holes. Supports ethyl cellulose with HPMC and keeps the coating state without breaking the applied paint. Furthermore, the deodorizing coating film has a structure having fine holes that allow gas to enter. That is, it becomes a fine porous coating structure. That is, it has a structure for trapping odor molecules of highly branched cyclic dextrin and silver zeolite. Thereby, since the deodorizing coating film gradually exhibits a deodorizing effect and an antibacterial effect over time, the deodorizing coating film can maintain its efficacy over a long period of time. In particular, silver zeolite is coated with a pH-sensitive polymer, and this coating is composed of a material that dissolves in the acidic region and a material that dissolves in the basic region. It dissolves with an acidic odor such as herbal acid and traps the odor, and particles B dissolves with an alkaline odor such as ammonia and amines to trap the odor molecule, that is, a basic and acidic odor Dissolved in, the fine pores of the silver zeolite capture the odorous molecules and each deodorizing effect is manifested. A highly branched cyclic dextrin composed of cyclodextrin or cluster dextrin can capture a wide range of odorous molecules with fine pores for both odors.

  Thus, since the deodorizing coating film is formed by coating a coating material containing a component having a deodorizing effect, for example, trapping odor generated by urination, defecation, etc. in a toilet facility, and a toilet with good environment It can be equipment.

  In addition, contamination of a person or a manufacturing room by microorganisms such as bacteria and viruses from the inside of the person and the toilet becomes a problem. Therefore, the coating material to be coated contains a component having an antibacterial effect in addition to a deodorizing effect. Specifically, with regard to deodorization, as described above, the alkaline odor or acidic odor is trapped in each odor and exhibits a deodorizing effect, and silver zeolite also has an antibacterial effect. That is, the fine pores of silver zeolite capture bacteria, viruses, molds, etc., and exhibit antibacterial effects.

  Therefore, according to the deodorizing coating film of this configuration example, the deodorizing and antibacterial effects can be enhanced. That is, by applying a coating material having a deodorizing effect and an antibacterial effect on the surface of a deodorizing surface possessing equipment, such as a ceiling, wall surface, floor, toilet bowl, etc., which is an odor contact member of toilet equipment, by urination, defecation etc. Odor generated, that is, odorous molecules can be captured. In addition, the antibacterial action can suppress contamination of a person or a manufacturing room by microorganisms such as bacteria and viruses from the inside of the person and the toilet. That is, deodorization and antibacterial in the toilet facility are performed in the facility, and the toilet facility with good environment can be realized without leaking outside. In addition, deodorization and antibacterial effects can be obtained by applying coatings to waste disposal facility equipment, drains, drains, garbage trucks, etc. It is also effective for facilities and equipment that want to remove odors such as equipment for handling goods.

  Moreover, according to the film formation method of the deodorizing coating film of this structural example, the deodorizing coating film which maintains a deodorizing effect and an antimicrobial effect over a long period of time can be formed.

  Moreover, according to the deodorizing surface possession equipment apparatus of this structural example, an odor can be trapped and it can be set as the equipment space with favorable environment. In addition, the antibacterial action can suppress contamination of the person or the inside of the toilet by microorganisms such as bacteria and viruses from the inside of the person and the toilet.

Claims (4)

Particles A comprising a pH-sensitive polymer that dissolves in an acidic region and an inorganic antibacterial agent included in the pH-sensitive polymer;
A particle B composed of a pH-sensitive polymer that dissolves in a basic region and an inorganic antibacterial agent included in the pH-sensitive polymer,
An aqueous coating agent in which the particles A and the particles B are dispersed in an aqueous dispersion solution containing a cellulose derivative and a highly branched cyclic dextrin is solidified and attached to the application surface.
Deodorized paint film. The highly branched cyclic dextrin is cyclodextrin or cluster dextrin,
The pH sensitive polymer that dissolves in the acidic region is aminoalkyl methacrylate copolymer E, polyvinyl acetal diethylaminoacetate,
The pH-sensitive polymer that dissolves in the basic region is methacrylic acid copolymer LD, hydroxypropylmethylcellulose phthalate,
The deodorizing coating film according to claim 1. An inorganic antibacterial agent is dispersed in a suspension obtained by adding a surfactant to a pH sensitive polymer that dissolves in an acidic region to obtain an aqueous dispersion, and then spray-dried to obtain particles A.
An inorganic antibacterial agent surface-treated with an organic acid is dispersed in a suspension of a pH-sensitive polymer that dissolves in a basic region to obtain an aqueous dispersion, and then spray-dried to obtain particles B.
The particles A and the particles B are uniformly dispersed in an aqueous dispersion containing an ethylcellulose aqueous suspension, hydroxypropylmethylcellulose, cyclodextrin or cluster dextrin components to obtain an aqueous coating agent,
After applying the aqueous coating agent, it is solidified on the surface to be coated by heat treatment to form a film.
Deodorizing coating film forming method. An odor contact member having a surface in contact with the odor;
And a deodorizing coating film covering at least a part of the surface,
The deodorizing coating film is
Particles A obtained by dispersing an inorganic antibacterial agent in a suspension obtained by adding a surfactant to a pH-sensitive polymer that dissolves in an acidic region to obtain a water-dispersed solution, and then spray-drying particles A;
A dispersion of an inorganic antibacterial agent surface-treated with an organic acid in a suspension of a pH-sensitive polymer that dissolves in a basic region to obtain an aqueous dispersion, and then spray-dried particles B.
An aqueous coating agent in which the particles A and the particles B are dispersed in an aqueous dispersion solution containing a cellulose derivative and a highly branched cyclic dextrin is solidified and attached to the application surface.
Equipment with deodorizing surface.