JP2002146886A - Coating composition for flush toilet stool and flush toilet stool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coating composition for a flush toilet stool and the flush toilet stool allowing a brown ring-like stain to be hardly fixed near the draft line of the sump section of the flush toilet stool and allowing the stuck stain to be simply removed merely by wiping with cloth. SOLUTION: This flush toilet stool has the sump section, and a water repellent process is applied to the draft line forming section of the sump section. The toilet stool face of the draft line forming section of the sump section of the flush toilet stool is coated with a paint containing a silicone as the coating composition to form a water repellent film.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating composition for a flush toilet, which makes it difficult for dirt to adhere to a water line forming portion of a reservoir of a flush toilet and can be easily removed with a cloth wipe. Further, the present invention relates to a flush-type toilet which is hardly adhered to a water line forming portion of a reservoir and can be easily removed with a cloth wipe.

[0002]

2. Description of the Related Art It is necessary to keep the surface of a flush toilet sanitarily clean and to maintain a high aesthetic appearance over a long period of time because flush toilets are commodities used in living spaces. It is a characteristic. However, especially in the vicinity of the water line in the basin of the flush toilet, since the state of being exposed to water and the state of drying are repeated, Ca (calcium) and Fe (iron) contained in the water are fixed and brown. Ring-like stains occur. Then, there is a problem that the adhered dirt cannot be removed only by wiping with a cloth and cannot be removed unless the dirt is removed with an abrasive or the like.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and makes it difficult to fix brown ring-shaped dirt near the water line of a basin of a flush toilet and wipes off the dirt with a cloth. It is an object of the present invention to provide a flush-type toilet bowl coating composition that can be easily removed in a certain degree. Also,
An object of the present invention is to provide a flush-type toilet that is hard to adhere brown ring-shaped dirt near a waterline of a basin of a flush-type toilet and that can easily remove the adhered dirt with a cloth wipe.

[0004]

According to the present invention, in order to solve the above-mentioned problems, the present invention relates to a flush toilet having a water reservoir, wherein a water line forming part of the water reservoir is subjected to a water-repellent treatment. A flush toilet is provided. By performing a water-repellent treatment on the toilet surface of the water line forming part of the reservoir part, water-based deposits composed of compounds such as Ca and Fe are less likely to adhere, and attached stains can be easily removed by wiping with a cloth.

In a preferred aspect of the present invention, the water-repellent surface contains a metal component having a monovalent valence and / or a metal component having a scale of Pauling's electronegativity of less than 1.0. To do. When these components are present on the water-repellent treated surface, they form a water-soluble compound with respect to oily stains, and oily stains such as stool other than water-based deposits composed of compounds such as Ca and Fe. It can be expected that the cleaning effect on the surface will be enhanced.

In a preferred embodiment of the present invention, the water-repellent treated surface contains an antimicrobial agent. As a result, it is possible to suppress the generation of pink slime that is likely to occur near the waterline.

According to the present invention, there is provided a flush toilet having a reservoir, wherein a water-repellent coating is formed on a water line forming portion of the reservoir. A coating composition for a flush toilet, which forms a water-repellent coating by coating a paint on a toilet surface of a water line forming part of a water reservoir part, wherein the paint contains silicone. A coating composition is provided. The water-repellent coating formed of silicone is preferable because it can form an abrasion-resistant coating at room temperature to about 200 ° C. Since the water-repellent coating is formed on the water line forming part of the reservoir, it is difficult to fix water-based deposits composed of compounds such as Ca and Fe, and the attached dirt can be easily removed with a cloth wipe. .

[0008] In a preferred embodiment of the present invention, the water-repellent coating formed by the above coating material is a coating containing a fluororesin and / or a fluorine compound. A coating containing a fluororesin and / or a fluorine compound is preferred because it exhibits strong water repellency.

In a preferred embodiment of the present invention, the ceria- and / or yttria-containing coating is preferable because it exhibits water repellency and is excellent in abrasion resistance and alkali resistance.

[0010] In a preferred aspect of the present invention, the water-repellent surface contains a metal component having a monovalent valence and / or a metal component having a Pauling electronegativity scale of less than 1.0. To do. When these components are present on the water-repellent treated surface, they form a water-soluble compound with respect to oily stains, and oily stains such as stool other than water-based deposits composed of compounds such as Ca and Fe. It can be expected that the cleaning effect on the surface will be enhanced.

[0011] In a preferred embodiment of the present invention, the water-repellent treated surface contains an antibacterial agent. As a result, it is possible to suppress the generation of pink slime that is likely to occur near the waterline.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The water-repellent coating in the present invention is
A coating film whose contact angle with water measured by a contact angle measuring device is 90 degrees or more. Preferably it is 110 degrees or more, more preferably 140 degrees or more.

In the present invention, the water-repellent coating formed by applying the coating composition for a flush toilet to a flush toilet has a monovalent metal component and / or a measure of Pauling's electronegativity. A metal component of less than 1.0 may be contained. Here, as a metal component having a monovalent valence,
Li, Na, K, Rb, Cs, Ag, Cu, Au and the like can be suitably used, and as a metal component having a Pauling electronegativity scale of less than 1.0, Li, Na, K, R
b, Cs, Ba, and Sr can be suitably used.

The silicone-containing coating in the present invention is:
Silicone having one or more organic groups bonded to silicon atoms in the silicone, that is, an average composition formula RpSIX
qO (4-p-q) / 2 (wherein, R represents 1 to 18 carbon atoms)
X is an alkoxy group having 1 to 4 carbon atoms, and p and q are 0 <p <2, 0 <q <4, 0 <p + q
<4 is a number that satisfies <4) and is obtained by curing an uncured silicone.

One method of manufacturing the flush toilet of the present invention is as follows.
The glaze is applied to a toilet molding base made by casting and baked at a temperature of 1100 ° C. or more. By applying a paint containing the compound and then curing the silicone. Well-known methods such as spray coating, brush coating, and sponge coating can be used as a method of applying here. For curing the silicone, well-known methods such as standing at normal temperature, heating, and irradiation with ultraviolet rays can be used. Another method of manufacturing a flush toilet according to the present invention,
The release sheet of the adhesive film for a flush toilet is peeled off at the water line forming part of the basin of the toilet, obtained by applying a glaze to the toilet molding base made by casting and firing at a temperature of 1100 ° C or more. The adhesive is brought into contact with the surface of the toilet bowl by applying the adhesive.

The above-mentioned adhesive film for a flush-type toilet bowl comprises a release sheet, an adhesive layer disposed on the sheet, a flexible film disposed on the adhesive layer, and It consists of the formed water-repellent coating, and the above-mentioned sheet is peeled off, and the above-mentioned adhesive layer is brought into contact with the toilet layer surface of the water line forming part of the reservoir part of the flush toilet, so that the water surface of the water line forming part of the reservoir part is formed. A water-repellent coating is formed. Further, the water-repellent coating may be a silicone-containing coating or a coating containing silicone polymerized by siloxane crosslinking and crosslinking other than siloxane. Further, the water-repellent film may be a film containing a fluororesin and / or a fluorine compound, may be a film containing ceria and / or yttria, or may have a monovalent valence in the water-repellent film. And / or a metal component having a measure of Pauling's electronegativity of less than 1.0 may be contained, and an antibacterial agent may be contained.

The uncured silicone is a bifunctional silane derivative monomer (having two hydrolyzable groups per molecule,
A monomer forming a bifunctional siloxane bond in which two oxygen atoms are bonded to each silicon atom) and / or a trifunctional silane derivative monomer (having three hydrolyzable groups per molecule,
A monomer that forms a trifunctional siloxane bond in which three oxygen atoms are bonded to each silicon atom as an essential component, and a tetrafunctional silane derivative monomer (having four hydrolyzable groups per molecule, It is obtained by hydrolyzing and polycondensing a composition containing a monomer that forms a tetrafunctional siloxane bond in which four oxygen atoms are bonded to atoms.

Here, as the bifunctional silane derivative, dimethyldimethoxysilane, dimethyldiethoxysilane,
Diphenyldimethoxysilane, diphenyldiethoxysilane, phenylmethyldimethoxysilane, phenylmethyldiethoxysilane, γ-glycidoxypropylmethyldimethoxysilane, γ-glycidoxypropylmethyldiethoxysilane, γ- (meth) acryloxypropylmethyl Dimethoxysilane, γ- (meth) acryloxypropylmethyldiethoxysilane, γ-aminopropylmethyldimethoxysilane, γ-aminopropylmethyldiethoxysilane, heptadecafluorooctylmethyldimethoxysilane, heptadecafluorooctylmethyldiethoxysilane, etc. Can be suitably used.

Trifunctional silane derivatives include methyltrimethoxysilane, methyltriethoxysilane, methyltriisopropoxysilane, methyltributoxysilane, ethyltrimethoxysilane, ethyltriethoxysilane, ethyltriisopropoxysilane, ethyltrit
Butoxysilane, vinyltrimethoxysilane, vinyltriethoxysilane, vinyltriisopropoxysilane, vinyltributoxysilane, n-propyltrimethoxysilane, n-propyltriethoxysilane, n
-Propyltriisopropoxysilane, n-propyltributoxysilane, n-hexyltrimethoxysilane, n-hexyltriethoxysilane, n-hexyltriisopropoxysilane, n-hexyltritbutoxysilane, n-decyltrimethoxysilane, n -Decyltriethoxysilane, n-decyltriisopropoxysilane, n-decyltributoxysilane, n-octadecyltrimethoxysilane, n-octadecyltriethoxysilane, n-octadecyltriisopropoxysilane, n-octadecyltributoxysilane, phenyl Trimethoxysilane, phenyltriethoxysilane,
Phenyltriisopropoxysilane, phenyltributoxysilane, γ-glycidoxypropyltrimethoxysilane, γ-glycidoxypropyltriethoxysilane, γ-glycidoxypropyltriisopropoxysilane, γ-glycidoxypropyltrit Butoxysilane, β- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, β- (3,4-epoxycyclohexyl) ethyltriethoxysilane, β- (3,4-epoxycyclohexyl) ethyltriisopropoxysilane, β- (3,4-epoxycyclohexyl) ethyl tri-butoxysilane, γ- (meth) acryloxypropyltrimethoxysilane, γ- (meth) acryloxypropyltriethoxysilane, γ- (meth) acryloxypropyltriisopropoxy Orchid, γ- (meth) acryloxypropyl tributoxysilane, γ-aminopropyltrimethoxysilane, γ-aminopropyltriethoxysilane, γ-aminopropyltriisopropoxysilane, γ-aminopropyltributoxysilane, γ-mercapto Propyltrimethoxysilane, γ-mercaptopropyltriethoxysilane, γ-mercaptopropyltriisopropoxysilane, γ-mercaptopropyltributoxysilane, trifluoropropyltrimethoxysilane, trifluoropropyltriethoxysilane, trifluoropropyltriisopropoxy Silane, trifluoropropyltributoxysilane, heptadecafluorooctyltrimethoxysilane,
Heptadecafluorooctyltriethoxysilane, heptadecafluorooctyltriisopropoxysilane, heptadecafluorooctyltributoxysilane, and the like can be suitably used.

As the tetrafunctional silane derivative, tetramethoxysilane, tetraethoxysilane, tetraisopropoxysilane, tetrabutoxysilane, dimethoxydiethoxysilane and the like can be suitably used.

Among the above uncured silicones, those having a γ-glycidoxypropyl group, a β- (3,4-epoxycyclohexyl) group, a γ- (meth) acryloxy group, etc., are organic crosslinks other than siloxane crosslinks. Can be formed, which is preferable for obtaining room temperature curability.

In the above uncured silicone,
A curing agent may be added to enhance the room temperature curability.
Examples of the curing agent include lithium hydroxide, sodium hydroxide, potassium hydroxide, sodium methylate, sodium acetate, sodium formate, potassium acetate, potassium formate, potassium propionate, tetramethylammonium chloride, and tetramethylammonium hydroxide. Basic compounds; n-hexylamine, tributylamine, diazabicycloundecene, ethylenediamine, hexanediamine, diethylenetriamine, triethylenetetramine, tetraethylenebentamine, ethanolamines, γ-aminopropyltrimethoxysilane, γ- Aminopropylmethyldimethoxysilane, γ- (2-aminomethyl) -aminopropyltrimethoxysilane, γ- (2-aminomethyl) -aminopropylmethyldimethoxysilane, etc. Titanium compounds such as tetraisopropyl titanate and tetrabutyl titanate; aluminum compounds such as aluminum triisobutoxide, aluminum triisopropoxide, aluminum acetylacetonate, aluminum perchlorate, and aluminum chloride; tin acetylacetonate, dibutyltin Tin compounds such as octylate; cobalt octylate;
Metal-containing compounds such as cobalt acetylacetonate and iron acetylacetonate; and acidic compounds such as phosphoric acid, nitric acid, phthalic acid, p-toluenesulfonic acid, and trichloroacetic acid can be preferably used.

Further, metal oxide fine particles may be added to improve the hardness and abrasion resistance of the cured film, or to improve the gloss by increasing the refractive index. As the metal oxide, silica, alumina, cerium oxide, tin oxide, zirconium oxide, hafnium oxide, antimony oxide, iron oxide, titanium oxide, rare earth oxide, and the like can be used.

In the present invention, as a crosslink other than siloxane, for example, a methacryl group, a vinyl group, an epoxy group, an amide group and the like can be suitably used.

The fluororesin used in the fluororesin-containing coating in the present invention includes, for example, polyvinyl fluoride, polyvinylidene fluoride, poly (ethylene trichloride), polytetrafluoroethylene, polytetrafluoroethylene-propylene hexafluoride. Copolymers, ethylene-polytetrafluoroethylene copolymers, ethylene-polychlorinated ethylene trifluoride copolymers, ethylene tetrafluoride-perfluoroalkyl vinyl ether copolymers, perfluorocyclopolymers, vinyl ether-fluoroolefin copolymers, vinylester-fluoroolefin copolymers, etc. are preferably used. it can.

The fluorine compound used in the fluorine compound-containing coating of the present invention includes lithium fluoride, magnesium fluoride, calcium fluoride, strontium fluoride, barium fluoride, scandium fluoride, yttrium fluoride, zirconium fluoride, and the like. Hafnium fluoride, manganese fluoride, iron fluoride, cobalt fluoride, nickel fluoride, copper fluoride, aluminum fluoride, gallium fluoride, indium fluoride, bismuth fluoride, lanthanum fluoride, cerium fluoride, fluoride Praseodymium, neodymium fluoride, samarium fluoride, europium fluoride, terbium fluoride, dysprosium fluoride, holmium fluoride, erbium fluoride, thulium fluoride, ytterbium fluoride, lutetium fluoride and the like can be suitably used.

According to one method of manufacturing a flush toilet according to the present invention, a glaze is applied to a toilet molding base made by casting.
After applying a coating containing the fluororesin and / or the fluorine compound, while masking the portion not to be applied to the water line forming portion of the water reservoir portion of the toilet bowl obtained by firing at a temperature of 00 degrees or more, By curing a fluorine resin and / or a fluorine compound. Here, as a coating method, a well-known method such as spray coating, brush coating, and sponge coating can be used. For curing of fluorine resin,
Known methods such as standing at room temperature, heating, and irradiation with ultraviolet rays can be used. Another method of manufacturing a flush toilet according to the present invention is to apply a glaze to a toilet molding base manufactured by casting and sinter it at a temperature of 1100 ° C. or higher. The release sheet in the adhesive film for a flush toilet is peeled off, and the adhesive is brought into contact with the surface of the toilet so that the adhesive is applied.

The above-mentioned adhesive film for a flush toilet is provided with a release sheet, an adhesive layer disposed on the sheet, a flexible film disposed on the adhesive layer, and a film surface. It consists of the formed water-repellent coating, and the above-mentioned sheet is peeled off, and the above-mentioned adhesive layer is brought into contact with the toilet layer surface of the water line forming part of the reservoir part of the flush toilet, so that the water surface of the water line forming part of the reservoir part is formed. A water-repellent coating is formed. The water-repellent film may be a film containing a fluororesin and / or a fluorine compound, may be a film containing ceria and / or yttria, or may have a monovalent valence in the water-repellent film. And / or a metal component having a measure of Pauling's electronegativity of less than 1.0 may be contained, and an antibacterial agent may be contained.

In the flush toilet of the present invention, a coating containing silicone and a fluororesin may be formed on the water line forming portion of the reservoir of the toilet. Here, those exemplified above can be suitably used for the silicone and the fluororesin. In particular, when the weight of the fluororesin is at least 40% based on the total weight of the silicone and the fluororesin, a super water repellency with a contact angle with water of 150 degrees or more is preferable. One method of manufacturing this flush toilet is to apply a glaze to a toilet molding base made by casting and apply it to a water line forming part of a reservoir of a toilet obtained by firing at a temperature of 1100 degrees or more. By applying the coating containing the silicone and the fluororesin while masking the non-existent portions, the silicone is cured. Here, as a coating method, a well-known method such as spray coating, brush coating, and sponge coating can be used. For curing the silicone, well-known methods such as standing at normal temperature, heating, and irradiation with ultraviolet rays can be used. Another method of manufacturing this flush toilet is to apply a glaze to a toilet molding base made by casting and bake it at a temperature of 1100 ° C. or more. The release sheet is peeled off from the adhesive film for a toilet, and the adhesive is applied so that the adhesive is brought into contact with the surface of the toilet.

The above-mentioned adhesive film for a flush-type toilet bowl includes a release sheet, an adhesive layer disposed on the sheet, a flexible film disposed on the adhesive layer, and a surface of the film. It consists of the formed water-repellent coating, and the above-mentioned sheet is peeled off, and the above-mentioned adhesive layer is brought into contact with the toilet layer surface of the water line forming part of the reservoir part of the flush toilet, so that the water surface of the water line forming part of the reservoir part is formed. A water-repellent coating is formed. The water-repellent film may be a film containing a fluororesin and / or a fluorine compound, may be a film containing ceria and / or yttria, or may have a monovalent valence in the water-repellent film. And / or a metal component having a measure of Pauling's electronegativity of less than 1.0 may be contained, and an antibacterial agent may be contained.

In the flush toilet of the present invention, a coating containing silicone and a fluorine compound may be formed on the water line forming portion of the reservoir of the toilet. Here, those exemplified above can be suitably used as the silicone and the fluorine compound. In particular, it is preferable that the weight of the fluorine compound is 40% or more based on the total weight of the silicone and the fluorine compound, since the contact angle with water exhibits a super water repellency of 150 degrees or more. One method of manufacturing this flush toilet is to apply a glaze to a toilet molding base made by casting and sinter it at a temperature of 1100 ° C. or higher.
By applying the coating containing the silicone and the fluorine compound while masking portions not to be applied, and then curing the silicone. Here, as a method of applying, spray coating, brush coating,
Known methods such as sponge coating can be used. For curing the silicone, well-known methods such as standing at normal temperature, heating, and irradiation with ultraviolet rays can be used. Another method of manufacturing the flush toilet is to apply a glaze to a toilet molding base made by casting.
The release sheet of the adhesive film for a flush-type toilet is peeled off and the adhesive is attached to the water line forming part of the reservoir part of the toilet bowl obtained by firing at a temperature of 100 ° C. or more so that the adhesive is brought into contact with the toilet surface. It depends.

The above-mentioned adhesive film for a flush-type toilet bowl includes a release sheet, an adhesive layer disposed on the sheet, a flexible film disposed on the adhesive layer, and a surface of the film. It consists of the formed water-repellent coating, and the above-mentioned sheet is peeled off, and the above-mentioned adhesive layer is brought into contact with the toilet layer surface of the water line forming part of the reservoir part of the flush toilet, so that the water surface of the water line forming part of the reservoir part is formed. A water-repellent coating is formed. The water-repellent film may be a film containing a fluororesin and / or a fluorine compound, may be a film containing ceria and / or yttria, or may have a monovalent valence in the water-repellent film. And / or a metal component having a measure of Pauling's electronegativity of less than 1.0 may be contained, and an antibacterial agent may be contained.

In the flush type toilet according to the present invention, the ceria and / or the crest and / or the water line are formed so that the longitudinal direction of the coating has an angle of 90 degrees or less than 90 degrees from the horizontal plane.
Alternatively, a film containing yttria may be formed. When a film containing ceria and / or yttria is formed, the film exhibits hydrophilicity immediately after production, but exhibits water repellency when left for a while. The method of manufacturing this flush toilet is such that the above-mentioned cerium and / or Or after applying a paint containing an yttrium alkoxide,
By baking at a temperature of 00 to 700 degrees. At this time, the coating is performed by masking a portion that is not desired to be coated as necessary. Well-known methods such as spray coating, brush coating, sponge coating, flow coating, and bar coating can be used as a method of applying.

The water-repellent film formed by the flush toilet and the coating composition for flush toilet of the present invention may contain an antimicrobial agent. Antibacterial agents include silver, copper, antibacterial metals such as zinc and their compounds, fine particles or carriers such as silica gel and zeolite, carriers, quaternary ammonium salts, nitrile derivatives, imidazole derivatives, benzothiazole derivatives, isothiazole derivatives, Thiatithiazole derivatives, triazine derivatives, sulfone derivatives, phenol derivatives, phenol ester derivatives, pyrrole derivatives and the like can be suitably used.

[0035]

Example (Comparative Example 1)

[0036]

[Table 1]

2 kg of glaze raw material having the composition shown in Table 1 and water 1
kg and 4 kg of cobble stone were placed in a 6-liter pottery pot and ground by a ball mill for about 18 hours. The glaze slurry obtained here is designated as glaze A. When the particle size of the glaze A obtained after the pulverization was measured using a laser diffraction type particle size distribution meter, 65% was 10 μm or less, and the 50% average particle size (D50) was 6.2 μm. Next, using a sanitary ware body slurry prepared using silica sand, feldspar, clay and the like as raw materials, a plate test piece of 70 × 150 mm was prepared,
After applying the glaze obtained as described above by a spray coating method, the sample was obtained by firing at 1100 to 1200 ° C. About the obtained sample, the contact angle of the glaze layer surface with water was measured, and the scale adhesion and detergency were evaluated. The contact angle of the glaze layer surface with water was measured using a contact angle measuring device (manufactured by Kyowa Interface Science Co., Ltd., CA-X150) 30 seconds after a water drop was dropped on the glaze layer surface from a microsyringe. As a result, it was 30 °. Regarding the scale adhesion and cleaning properties, first supply 30 ml of tap water to a 300 cc beaker.
0 ml was placed therein, and the plate sample was immersed therein for about 15 days, thereby forming a waterline stain on the glaze layer surface.
Next, the surface of the glaze layer on which the waterline was soiled was rubbed and washed with a commercially available sponge made of cellulose containing tap water. At this time, before and after washing, Herstec plaque stained gel “D
A solution prepared by diluting "ENTCLUB" with distilled water was sprayed, and the amount of stain on the waterline was evaluated based on the intensity of the red color. When this plaque dyed gel is used, a portion with a large amount of stain is dyed strongly red, and a portion with no stain is not colored. Therefore, it is possible to visually evaluate the amount of stains. As a result, a large amount of dirt is attached before cleaning,
Most of the adhered dirt remained after the washing.

Example 1 Glaska B603 manufactured by JSR was applied to the entire surface of the glaze layer of the plate-shaped test piece obtained in Comparative Example 1 by a spray coating method. After drying at room temperature for 30 minutes, it was heated and cured at 200 ° C. for 30 minutes to form a film composed of silicone and acrylic.
When the obtained sample was evaluated in the same manner as in Comparative Example 1, the measurement result of the contact angle with water was 95 °. Regarding the water stain adhesion and detergency, a large amount of dirt had adhered before cleaning as in Comparative Example 1, but after cleaning, dirt had fallen and returned to the original clean surface. The coating film was not scratched or peeled off by the sponge cleaning.

Example 2 20 parts by weight of a curing agent H552 was added to 100 parts by weight of Glaska B603 manufactured by JSR, and the mixture was stirred and mixed with a magnetic stirrer to prepare a coating liquid. Next, using a commercially available PET film as a substrate, the above coating solution is applied to the substrate with a thickness of about 1 μm using a roll coater.
Heating and curing was performed over a period of minutes to obtain a PET film on which a coating composed of silicone and acrylic was formed. Further, a styrene-butadiene rubber-based adhesive was applied to the uncoated surface of the PET film obtained as described above, and the styrene-butadiene rubber-based adhesive was applied to the glaze layer surface of the plate-shaped test piece obtained in Comparative Example 1 for evaluation. Sample. When the obtained sample was evaluated in the same manner as in Comparative Example 1, the measurement result of the contact angle with water was 95 °. Regarding the scale adhesion and cleaning properties,
Before cleaning, a large amount of dirt was attached as in Comparative Example 1, but after cleaning, the dirt fell and returned to the original clean surface. The coating film was not scratched or peeled off by the sponge cleaning.

[0040]

According to the present invention, there is provided a flush-type toilet which can easily remove brown ring-like dirt near the waterline of a water-collecting portion of the flush-type toilet and can easily remove the adhered dirt by wiping with a cloth. be able to. Further, it is possible to provide a flush toilet bowl coating composition that makes it difficult to fix brown ring-shaped dirt near the waterline in the reservoir part of the flush toilet and that the dirt can be easily removed with a cloth wipe. .

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Tomoyasu Ichiki 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka Prefecture Totoki Equipment Co., Ltd. 2-1-1, Totoki Equipment Co., Ltd. (72) Inventor Masami Ando 2-1-1, Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka Prefecture Totoki Equipment Co., Ltd. (72) Inventor Koichi Hayashi Kitakyushu, Fukuoka Prefecture No. 2-1-1 Nakajima, Kokurakita-ku Totoki Equipment Co., Ltd. (72) Inventor Shin Hayakawa 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka Prefecture F-term (reference) 2D039 AA02 DB04

Claims (19)

[Claims] 1. A coating composition for a flush toilet, which forms a water-repellent film by coating a paint on a toilet surface of a water line forming part of a reservoir part of a flush toilet, wherein the paint contains silicone. A coating composition for flush toilets, characterized in that: 2. The coating composition for a flush toilet according to claim 1, wherein the paint contains a silicone polymerized by siloxane crosslinking and crosslinking other than siloxane. 3. The coating composition for a flush toilet according to claim 2, wherein the crosslinking other than the siloxane is crosslinking based on condensation polymerization of an acrylic group. 4. The coating composition for a flush toilet according to claim 1, wherein the paint contains a fluorine resin and / or a fluorine compound. 5. The coating composition for a flush toilet according to any one of claims 1 to 4, wherein the paint contains ceria and / or yttria. 6. The coating material according to claim 1, wherein the coating material contains a monovalent metal component and / or a metal component having a Pauling electronegativity scale of less than 1.0.
The coating composition for a flush toilet according to any one of claims 1 to 5. 7. The coating composition for a flush-type toilet according to claim 1, wherein the paint contains an antibacterial agent. 8. The water-repellent film formed by coating a paint on the toilet bowl surface has a contact angle with water of 90 ° or more. The coating composition for flush toilets according to item 1. 9. A flush toilet having a reservoir, wherein a water line forming part of the reservoir is subjected to a water-repellent treatment. 10. The water-repellent surface includes a metal component having a monovalent valence and / or a metal component having a Pauling electronegativity scale of less than 1.0. Item 10. A flush toilet according to Item 9. 11. The flush toilet according to claim 9, wherein the water-repellent surface contains an antibacterial agent. 12. The water-repellent surface has a contact angle with water of 90 degrees or more.
A flush toilet according to any one of the preceding claims. 13. A flush toilet having a reservoir section,
A flush toilet, wherein a water-repellent coating is formed on a water line forming portion of the water reservoir. 14. The flush toilet according to claim 13, wherein the water-repellent coating is a silicone-containing coating. 15. The water-repellent coating is made of a fluororesin and / or
The flush toilet according to claim 13 or 14, which is a film containing a fluorine compound. 16. The water-repellent film is a ceria- and / or yttria-containing film.
The flush toilet according to any one of claims 15 to 15. 17. The water-repellent coating according to claim 17, wherein the water-repellent coating contains a monovalent metal component and / or a metal component having a Pauling electronegativity scale of less than 1.0. A flush toilet according to any one of 13 to 16. 18. The flush toilet according to claim 13, wherein the water-repellent coating contains an antibacterial agent. 19. The flush toilet according to claim 13, wherein the water-repellent coating has a contact angle with water of 90 degrees or more.