JP4949566B2 - How to prevent scale sticking in toilets with removable traps - Google Patents

Description

【００３０】
【発明の効果】
本発明のトラップ着脱式トイレにおけるスケールの固着防止方法によると、トラップ溜水部やトイレ排水管へのスケールの固着を簡便かつ長期にわたり防止することができる。
【図面の簡単な説明】
【図１】本発明に用いられるトイレ用スケール防止具の斜視図である。
【図２】本発明に用いられる掛止部を有するトイレ用スケール防止具の斜視図である。
【図３】トラップ着脱式男子用トイレにおける本発明に用いられるトイレ用スケール防止具の使用状態を示す図である。
【図４】本発明に用いられるトイレ用スケール防止具をトラップ着脱式男子用トイレに使用する場合の説明図である。
【符号の説明】
１ 成形体（固形タイプのスケール防止剤）
２ 袋体
３ トイレ用スケール防止具
４ 袋体の周縁ヒートシール部
５ リング（掛止部）
６ 掛止部を有するトイレ用スケール防止具
７ 排水管
８ 着脱トラップ
９ 便器
１０ フック
１１ 保持蓋[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for preventing scale sticking in a trap detachable toilet, more specifically, by using a solid type scale inhibitor containing a solid acid as an active ingredient, and adjusting the pH of the trap water reservoir in the trap detachable toilet to 3. It is related with the scale sticking prevention method in the trap removable toilet characterized by maintaining to 5-4.5.
[0002]
[Prior art]
Toilet drains, especially for men's toilets, scales called urine stones, which are fixed with a mixture of calcium-based compounds and organic substances produced by urine decomposition, are generated, and the flow of urine and washing water is reduced. When it gets worse, in severe cases, the drain pipe is blocked and the toilet becomes unusable. In addition, organic substances in urine stone rot by bacteria and generate bad odor. The bad odor of men's toilets is a mixed odor of bad odor caused by organic decay and ammonia generated by decomposition of urine.
[0003]
Conventionally, as a method for preventing the scale of a toilet drain pipe, a method of injecting a medicine into a wash water pipe, a method of putting a spherically shaped medicine into a toilet of a men's toilet, and the like have been put into practical use. Various drugs containing surfactants, bactericides, and fragrances have been proposed as drugs used in these methods. For example, Japanese Patent Publication No. 45-30706 discloses a deodorizing cleaning agent for a flush toilet that is obtained by melt-mixing a surfactant, an ion sequestering agent, a fragrance and the like together with polyethylene glycol or polypropylene glycol and an aromatic substance, and injection molding. JP-A-57-168668 describes cooling and solidifying a mixed melt comprising additives such as polyethylene glycol that is solid at room temperature, poorly water-soluble aromatic substances, nonionic surfactants, and fragrances. A cleaning antifouling air freshener molded in this manner is described.
[0004]
In addition, French Patent No. 1501248 and British Patent No. 877733 disclose cleaning chemicals composed of sulfamic acid and paradichlorobenzene, etc., but all of these chemicals are applied to toilet drain pipes. Although it prevents the scale from sticking, it also removes the scale stuck to the toilet drain pipe and is a scale control agent. Furthermore, as a method for controlling the scale once fixed to the toilet drain pipe, a method of dissolving the scale using an inorganic strong acid such as hydrochloric acid, or a method of removing the toilet and removing the scale mechanically is employed.
[0005]
To prevent the scale from sticking to the toilet drain pipe and to prevent the scale from sticking to the toilet drain pipe without removing the scale attached to the toilet drain pipe without the corrosion of the toilet drain pipe or the purification capacity of the septic tank. Many inhibitors have been proposed. For example, an aqueous solution containing one or more acidic substances selected from mineral acids, organic acids, water-soluble acidic salts, water-soluble salts of strong and weak bases, and sulfamic acid in urine and / or washing water. Addition of urine or a method for preventing scale sticking of toilet drain pipes (patent No. 293,255) for maintaining the pH of urine or a mixed waste water of urine and washing water at 5 to 7.5, and a solid acid as an active ingredient The scale inhibitor (Patent No. 2135584) for toilet drain pipes composed of a molded body containing a base material and / or other additives added by pH, or in the range of pH 5 to 8.5 by reacting with calcium ions A solid acid that does not produce a salt having a solubility in water of 0.001 g / 100 g (water) or less is used as an active ingredient, and the pH of urine or a mixed wastewater of urine and washing water can be maintained at 5 to 8.5. Sublimation The solubility in water of pH 5 to 8.5 in the range of pH 5 to 8.5 by reacting with a scale fixing inhibitor (Patent No. 2784904) of a toilet drain pipe comprising a molded body containing 20% by weight or more of a base material and calcium ions 20% by weight of a solid acid and / or non-sublimable substrate having a solubility of 0.001 to 20 g / 100 g in water at 20 ° C., which is a solid acid that does not produce a salt of 0.001 g / 100 g (water) or less. A method for preventing scale adhering to a toilet drain pipe, characterized in that the pH of the urine or the mixed effluent of urine and washing water is maintained at 5 to 8.5 using the molded body containing the above (Patent No. 2928772) And an immersion type urolith inhibitor (Japanese Patent Laid-Open No. 2-14797) comprising a molded body containing 70% by weight or more of a solid acid having a saturation solubility in water of 20 ° C. of 1 g / 100 g or less. It has been proposed.
[0006]
In addition, a scale inhibitor that does not contain paradichlorobenzene, which has excellent solidification and hardly disintegrating properties, and also has excellent anti-uricidal activity and cleansing activity, has also been proposed. For example, JP-A-11-116996 discloses a trialkyltrioxane, a surfactant that is compatible with the trialkyltrioxane and that has a solidifying ability at room temperature, and a solid JP-A-11-80800 discloses a surfactant, an aromatic ketone, a fragrance useful as a base for toilet cleaners, and the like. Aliphatic fatty acid ester, naphthyl group-containing compound, cyclic and / or chain carboxylic acid having 7 to 18 carbon atoms, cyclic and / or chain alcohol having 10 to 18 carbon atoms, cyclic having 6 to 12 carbon atoms and / or Or selected from chain amines, quinones, and hydroxybenzaldehydes, compatible with the surfactant, and compatible with the surfactant solidified at room temperature. A poorly water-soluble solid composition containing a substance having a diol is described. JP-A-2000-204397 discloses DL-camphor, naphthalene, borneol, adamantane, cyclododecane, triisopropyltrioxane, dimethoxybenzene, coumarin and the like. Urine obtained by warm-mixing a non-halogen sublimable substance and an organic acid capable of forming a molten mixture with the non-halogen sublimable substance, mixing the solid acid into the molten mixture, and then molding the urine Stone inhibitors are described.
[0007]
[Problems to be solved by the invention]
In the above-mentioned Japanese Patent No. 2928772 and the like, urine stone generation and urine stone adhesion prevention are described as follows. The urine usually contains 200 to 300 ppm of water-soluble calcium ions and 2000 to 2500 ppm of phosphate ions. Carbonate ions are contained in the wash water, and carbon dioxide in the atmosphere is dissolved and replenished. The pH of urine excreted from the body is about 5.5 to 6.5, but when it is left in the air, the pH gradually increases and finally reaches 9 to 9.5. When the pH is 7.5 or more, turbidity occurs. As the pH increases, the turbidity increases. When the pH is 8.5 or more, a white precipitate of calcium apatite is deposited, and calcium carbonate is deposited on the contact surface with the atmosphere. Crystals are formed into a film. These calcium apatite and calcium carbonate crystals adhere to toilet drains together with effective substances such as water-insoluble proteins produced by the action of bacteria and enzymes, grow to a scale generally called urine stone. The scale is calcium apatite [Ca_Five (PO_Four)_Three OH] 40-60 wt%, calcium carbonate [CaCO_Three ] It is a mixture of 20 to 40 wt% and 10 to 30 wt% of organic matter insoluble in water, and the calcium-based scale does not precipitate in water with a pH of 7.5 or less, and the pH is in the range of 7.5 to 8.5. Even if it precipitates with water, it takes very long time for precipitation, and urine or mixed waste water of urine and washing water produces ammonia by the action of urine degrading enzymes and bacteria, etc. By maintaining the pH of the urine or the mixed waste water of urine and washing water at 8.5 or less, preferably 7.5 or less, the scale can be prevented from sticking to the toilet drain pipe, If the pH of the urine or the mixed waste water of urine and washing water is too low to remove the scale stuck to the toilet drain pipe, corrosion of the drain pipe becomes a problem. The preferred lower limit of pH is 5, preferably It is said to be 5.5.
[0008]
Without removing the scale adhered to the toilet drain pipe, maintaining the pH of the urine or the mixed waste water of urine and washing water at 5-8.5, without eroding the toilet drain pipe or reducing the purification capacity of the septic tank, The scale adhesion prevention method and scale adhesion prevention agent for toilet drain pipes that prevent only scale adhesion to toilet drain pipes have already been put into practical use and can be said to be extremely complete. When the pH of the trap water is kept at 5 to 8.5, the trap water is diluted with the urine and the wash water that has flowed in. In practice, the scale is not sufficiently prevented from sticking to the toilet drain pipe. It was found that a small amount of scale sticking was newly observed. SUMMARY OF THE INVENTION An object of the present invention is to provide a method for easily and efficiently preventing scale fixation in a trap detachable toilet and reliably preventing it over a long period of time.
[0009]
[Means for Solving the Problems]
The present inventor has eagerly studied to solve the above problems, and the trap water in most trap detachable toilets is made of earthenware or plastic, and has a hint that there is no concern about corrosion. Is stored in a bag made of non-woven fabric, and the bag is hooked to a trapping part attached / detaching trap of a trap removable toilet devised by the present inventor. In this state, it is immersed in the trap reservoir of the trap detachable toilet, and when the pH of the trap reservoir is maintained at 3.5 to 4.5, the trap reservoir is diluted with the inflowing urine and washing water, The toilet drain pipe comes into contact with mixed water of pH 5.0 to 6.0, which not only prevents the scale from sticking to the trap reservoir and the toilet drain pipe, but also prevents the drain pipe from corroding. Scale prevention Can collapse the form medicament to prevent, control of elution rate of long-term active ingredient found to be a more easily, and have completed the present invention.
[0010]
  That is, the present invention(1)How to prevent scale from sticking in a trap detachable toilet, characterized in that the pH of the trap water in the trap detachable toilet is maintained at 3.5 to 4.5Law or,(2)The pH of trapped water is maintained at 3.5 to 4.5 by a solid type scale inhibitor containing a solid acid as an active ingredient.Above (1)How to prevent scale from sticking in the toilet with removable trapLaw or,(3)A solid type scale inhibitor containing a solid acid as an active ingredient is contained in a bag made of a water-permeable material.Above (2)How to prevent scale from sticking in the toilet with removable trapLaw or,(4)The water-permeable material is a non-woven fabric.Above (3)How to prevent scale from sticking in the toilet with removable trapLaw or,(5)The nonwoven fabric is a spunbonded nonwoven fabricAbove (4)How to prevent scale from sticking in the toilet with removable trapLaw or,(6)A solid type scale inhibitor containing a solid acid as an active ingredient is hung on a detachable trap.Above (2)-(5)How to prevent scale from sticking in the trap removable toiletTo the lawRelated.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
The method for preventing scale sticking in the trap detachable toilet of the present invention is not particularly limited as long as it is a method of maintaining the pH of the trap water in the trap detachable toilet at 3.5 to 4.5. The trap detachable toilet refers to a men's urinal having a detachable trap built in a toilet and no trap is provided in the drain pipe. As a method of maintaining the pH of the trap water in the trap detachable toilet at 3.5 to 4.5, a method of causing an acidic solution to flow down to the trap water part, a solid type scale having a solid acid or the like as an active ingredient A method of immersing the inhibitor in trapped water can be exemplified, but a method using a solid type scale inhibitor is preferred from the viewpoint of ease of use and operation.
[0012]
The solid type scale inhibitor used in the present invention is not particularly limited as long as it has an action to prevent the scale from sticking, including known solid type toilet scale inhibitors, but a solid acid as an active ingredient Here, the solid acid refers to an acidic substance that is solid at room temperature, and the solid acid has a solubility in water in the range of pH 5 to 8.5 by reacting with calcium ions to 0.001 g / 100 g. (Water) Those which do not produce the following salts are preferable, for example, succinic acid, citric acid, malic acid, maleic acid, isophthalic acid, tartaric acid, succinic acid, gallic acid, hydroxyacetic acid, P-toluenesulfonic acid, fumaric acid, adipine Acid, phthalic acid, terephthalic acid, isophthalic acid, salicylic acid, pracidylic acid, hydrocinnamic acid, maleic anhydride, benzoic acid, sorbine Room temperature solid organic acids such as ascorbic acid, water-soluble acidic salts such as sodium hydrogen sulfate, potassium hydrogen sulfate and ammonium hydrogen sulfate, water-soluble salts of strong and weak bases such as ammonium chloride and ammonium sulfate, boric acid and sulfamine An acid etc. can be mentioned, These acidic substances can be used individually by 1 type or in mixture of 2 or more types.
[0013]
Among the above solid acids, when a readily soluble solid acid such as ammonium chloride, sodium hydrogen sulfate, sulfamic acid and the like whose saturated solubility in water at 20 ° C. exceeds 20 g / 100 g is used as a main component, a slow-soluble solid acid, It is preferable to use one or more solid acids selected from the group consisting of a soluble base material, a hardly soluble solid acid, and a hardly soluble base material, or a base material in combination. The material means a material having a saturation solubility in water of 20 ° C. of 0.2 to 20 g / 100 g, and slow-soluble solid acids include succinic acid, boric acid, adipic acid, salicylic acid, pracidylic acid, hydrocinnamic acid, Those having good pressure moldability such as maleic anhydride or those which are easily dissolved by heating are preferred, and the hardly soluble solid acid or substrate has a saturated solubility in water of 20 ° C. of 0.001 to 0.00. 2g It refers to one of 100 g, as a solid acid insoluble, isophthalic acid, can be preferably exemplified suberic acid, cumin acid, terephthalic acid, and the like.
[0014]
For example, when the main component is a readily soluble solid acid, the content of the slowly soluble solid acid, the slowly soluble substrate, the hardly soluble solid acid, and the hardly soluble substrate is 20% by weight or more. While the body is in contact with urine and / or wash water or trap water, the shape becomes difficult to collapse, and the dissolution rate can be easily controlled. Moreover, when the said easily soluble solid acid is a fine powder, it is preferable that the particle size is about 0.1-1 mm. In addition, among the above-mentioned solid acids, when a slow-soluble or sparingly soluble solid acid is used as a main component, when they are weakly acidic solid acids, a readily soluble solid whose saturated solubility in water at 20 ° C. exceeds 20 g / 100 g. It is preferable to use 20% by weight or more of an acid or a base material. However, when they are strongly acidic solid acids, an easily soluble solid acid or base material may or may not be blended.
[0015]
As the above-mentioned base material, the solid acid has good moldability, and when used, the molded body is dissolved in urine and / or washing water or trapped water at an appropriate speed without causing deformation. However, a non-sublimable substrate is more preferable in terms of the environment than a sublimable substrate such as paradichlorobenzene or naphthalene. Here, the non-sublimable substrate refers to a substance excluding a sublimable substance (substance that is hardly soluble in water and has a sublimability of about 0.05 to 5 mmHg at room temperature). Among such non-sublimable substrates, examples of the readily soluble substrate include water-soluble polymers that are solid at room temperature, such as polyethylene glycol and polypropylene glycol, and various water-soluble surfactants. Examples thereof include tetrachlorobiphenyl, methyl tetronal oxalate, and solid nonionic surfactants having an HLB of 10 to 14. Examples of the hardly soluble substrate include santonin, L-menthol, phenyl salicylate, Examples thereof include resorcin, benzhydrol, and solid nonionic surfactants having 6 to 10 HLB. These non-sublimable substrates can be used alone or as a mixture of two or more.
[0016]
Moreover, as a solid type scale inhibitor, it is excellent in solidification and hard disintegration described in JP-A-11-116996, JP-A-11-80800, JP-A-2000-204397, etc. In addition, a scale inhibitor that does not contain paradichlorobenzene and has an excellent urinary stone-preventing action and cleaning action can also be used advantageously. That is, it consists of a solid molded product containing a trialkyltrioxane, a surfactant that is compatible with the trialkyltrioxane and that has a compatibility with the trialkyltrioxane, and a solid acid. , Useful as a base for scale inhibitors that do not melt even when the solid molded body is heated to 40 ° C., and detergents for toilets, containing surfactants, aromatic ketones, aromatic fatty acid esters, and naphthyl groups Compound, cyclic and / or chain carboxylic acid having 7 to 18 carbon atoms, cyclic and / or chain alcohol having 10 to 18 carbon atoms, cyclic and / or chain amine having 6 to 12 carbon atoms, quinones And a substance selected from hydroxybenzaldehydes, having a compatibility with the surfactant and having a compatibility with the surfactant at room temperature, Scale inhibitor based on a hardly water-soluble solid composition that does not melt when heated to 40 ° C., DL-camphor, naphthalene, borneol, adamantane, cyclododecane, triisopropyltrioxane, dimethoxybenzene A non-halogen sublimable substance such as coumarin and an organic acid capable of forming a molten mixture with the non-halogen sublimable substance are heated and mixed, and the solid acid is mixed into the molten mixture and then molded. Can be advantageously used.
[0017]
The solid type scale inhibitor comprises the solid acid as an active ingredient, and has an arbitrary shape, for example, a spherical shape, a cylindrical shape, a perforated cylindrical shape, a disc shape, a cubic shape, a rectangular parallelepiped shape, a conical shape, a pyramid shape, an animal or plant In addition to a solid acid, the molded body is used as a molded body having a shape or the like, and a base material, and a dissolution rate adjusting agent, a surfactant, a deodorant, a fragrance, a colorant, and a corrosion inhibitor, if desired. , Fungicides, sequestering agents, foaming agents, urease and the like can be added. These molded bodies are produced by a known molding method such as a method of mixing and tableting each component, a method of heating and melting a mixture of each component, injecting a molten slurry into a mold, and cooling and solidifying. Can do.
[0018]
For the purpose of adjusting the dissolution rate of the molded body in water, a dissolution rate modifier can be added to the molded body. Examples of such dissolution rate regulators include poorly water-soluble substances such as fatty acids and higher alcohols that can be obtained by heating a mixture with a solid acid or a base material to obtain a uniform molten mixture, calcium stearate, magnesium stearate, talc, etc. A fine powder of the water repellent material can be suitably exemplified. A corrosion inhibitor can be added for the purpose of preventing corrosion of the toilet drain pipe. As such a corrosion inhibitor, an acid-resistant cationic surfactant such as alkylthiourea can be preferably exemplified. Various deodorizers, urease, and fragrance can be added for the purpose of masking offensive odors and drifting fragrances. Also, coloring by urine etc. of molded products, detection of remaining amount of molded products, washing water For the purpose of coloring, water-insoluble or water-soluble colorants can be added. In addition, a type that does not affect the microflora of the septic tank, or a disinfectant whose amount can be ignored, or an ion sequestering agent such as nitrilotriacetic acid for the purpose of assisting the dissolution of scales by acidic substances. Can do.
[0019]
Further, a surfactant can be added for the purpose of penetrating the acidic substance into the scale and dispersing the acid-insoluble organic substance in the scale in the washing water. Preferred examples of such surfactants include nonionic surfactants and cationic surfactants that do not react with acidic substances. A foaming agent can be added to the molded body for the purpose of preventing scale removal and drainage pipe blockage. As such a foaming agent, a carbonate or hydrogen carbonate of an alkali metal or alkaline earth metal can be preferably exemplified. Various binders can be added for the purpose of improving the moldability of the solid acid. Preferred examples of the binder include hydroxypropyl cellulose, polyvinyl pyrrolidone, polyvinyl alcohol, carboxymethyl cellulose Na salt, and the like. In addition, toilet toilet cleaners for toilets such as inclusion compounds composed of antibacterial agents such as 5-chloro-2-methyl-4-isothiazolin-3-one and polymolecular host compounds such as tetrakis (hydroxyphenyl) alkanes It can also be added.
[0020]
The solid type scale inhibitor containing the solid acid as an active ingredient can be immersed in the trap reservoir as it is, but it is stored in a bag made of a water-permeable material such as a nonwoven fabric and immersed in the trap reservoir. It is preferable. The water permeable material is not particularly limited as long as it is a water permeable material capable of preventing the collapse of the stored solid type scale inhibitor and controlling the dissolution rate of the active ingredient from the bag over a long period of time. Examples include non-woven fabrics, synthetic resin nets, synthetic resin sheets or films having water passage holes, or felts. Ease of bag production by heat fusion, easiness of control of elution rate, production Nonwoven fabrics are preferred from the standpoints of cost, disintegration resistance imparting function, etc. Among them, spunbonded nonwoven fabrics, which are nonwoven fabrics formed by directly melt spinning a raw material resin, are particularly preferred. As such a spunbond nonwoven fabric, a known one or a commercially available one can be used. For example, a two-component composite olefin-based spunbond nonwoven fabric having a double core structure in which the core is polyester and the sheath is polyethylene. Can be preferably exemplified.
[0021]
Further, as will be described later, a solid type scale inhibitor containing a solid acid as an active ingredient is housed in a bag made of non-woven fabric, and a predetermined portion of the bag is hooked and held in a state of being immersed in trapped water. The elution rate of the active ingredient can be controlled by adjusting the thickness and density of the water-permeable material such as non-woven fabric. It is possible to easily control the dissolution rate of the scale inhibitor from the bag. When the water-permeable material is a non-woven fabric, particularly a spunbonded non-woven fabric, the density is 20 to 70 g / m, although it depends on the composition and molding conditions of the solid type scale inhibitor used.^Three, Preferably 30-50 g / m^ThreeThe thickness is usually 0.15 to 0.40 mm, preferably 0.20 to 0.30 mm. By adjusting the thickness and density of the water-permeable material such as nonwoven fabric, it is possible to give a wider range to the compounding composition and molding method of the drug component, but it is possible to adjust the dissolution rate of the solid type scale inhibitor beforehand. More preferred.
[0022]
Moreover, it is preferable that the solid type scale inhibitor containing a solid acid as an active ingredient is used by being hooked on a detachable trap, for example, made of the water-permeable material, rather than being directly put into the trap reservoir. A hook part is provided in the bag body, and the bag body containing the solid type scale inhibitor can be held at a predetermined position by using the hook part. For example, if a predetermined part of a bag is hooked and held in a state where it is immersed in trapped water, a predetermined volume of solid type scale inhibitor in the bag is immersed in trapped water, and the immersed part is dissolved. However, the non-immersed part moves downward and is newly immersed in the trap water, and the volume part that is always immersed in the trap water is kept almost constant, making it easy to control the elution rate of the active ingredient over a long period of time. Become. As a latching part provided in the bag body, a flexible ring inserted through the peripheral heat seal part of the bag body or a part of the peripheral heat seal part of the bag body has a hole in the central part thereof A protrusion piece etc. can be illustrated concretely. Moreover, the shape of the bag body is not particularly limited, but a shape suitable for the shape of the solid type scale inhibitor is preferable.
[0023]
The solid type scale inhibitor, which is sealed in a bag made of a water-permeable material and contains solid acid as an active ingredient, is immersed in the trap reservoir, and the solid drug dissolves in the trap reservoir and elutes out of the bag. Further, it becomes possible to maintain the pH of the trap water in the range of 3.5 to 4.5, and as a result, it is possible to prevent the scale from adhering to the trap water and the drain pipe. The pH of the trapped water is preferably adjusted comprehensively by adjusting the dissolution rate and shape of the scale inhibitor, the type, density and thickness of the water-permeable material. The dissolution rate of the scale inhibitor can be adjusted by selecting the type and amount ratio of the acidic substance to be used, the base material, etc., and by using a dissolution rate adjusting agent. In a preferred embodiment of the present invention, since the solid type scale inhibitor is contained in a bag made of a water-permeable material, significant deformation such as disintegration and swelling due to contact with urine and / or washing water is prevented. As a result, the pH can be stably maintained at 3.5 to 4.5 over a long period of time.
[0024]
【Example】
The present invention will be described in detail with reference to examples. However, the technical scope of the present invention is not limited to the following examples.
Example 1 (Preparation of solid type scale inhibitor)
[Part 1] 90 parts by weight of adipic acid as a solid acid, 10 parts by weight of hydroxypropylcellulose as a binder, 0.5 parts by weight of sucrose fatty acid ester as a lubricant, 0.5 parts by weight of dialkylsulfosuccinic acid as a surfactant, A mixture of 1.0 part by weight of 1,2,3-benzotriazole as a corrosion inhibitor and 0.5 part by weight of 2-methoxycarbonylaminobenzimidazole as a fungicide is pressure-molded, and 4.5 × 4.5 × 1.5mm^ThreeA molded body was prepared.
[Part 2] 20 parts by weight of adipic acid and 70 parts by weight of benzoic acid as a solid acid, 10 parts by weight of hydroxypropyl cellulose as a binder, 1 part by weight of a sucrose fatty acid ester as a lubricant, and 1 part by weight of a dialkylsulfosuccinic acid as a surfactant A mixture of 1.0 part by weight of 1,2,3-benzotriazole as a corrosion inhibitor and a small amount of chromophthal blue as a colorant, and 4.5 × 4.5 × 1.5 mm^ThreeA molded body was prepared.
[Part 3] 45 parts by weight of adipic acid and 45 parts by weight of succinic acid as solid acids, 10 parts by weight of hydroxypropylcellulose as a binder, 1 part by weight of sucrose fatty acid ester as a lubricant, and dialkylsulfosuccinic acid as a surfactant. A mixture comprising 5 parts by weight, 1.5 parts by weight of 1,2,3-benzotriazole as a corrosion inhibitor and 0.5 parts by weight of 2-methoxycarbonylaminobenzimidazole as a fungicide is pressure-molded, and 4.5 × 4.5 × 1.5mm^ThreeA molded body was prepared.
[0025]
Example 2 (Manufacture of toilet scale preventers)
As the water-permeable material, an olefin-based spunbonded nonwoven fabric (“Elves” manufactured by Unitika Ltd.) was used. Each of the nonwoven fabrics is cut to a predetermined size (length 80 mm, width 60 mm, back seal portion 8 mm), three sides are heat-sealed, and the molded body produced in Example 1 is packaged, and the remaining 1 The sides were heat-sealed, and as shown in FIG. 1, a toilet scale preventer 3 composed of a bag body 2 containing the molded body 1 was produced. Next, as shown in FIG. 2, a flexible string-like material was inserted into a hook provided in the toilet scale preventer 3, that is, a hole provided in the peripheral heat seal portion 4 of the bag body 2. Thereafter, a ring 5 having both ends bonded thereto was provided, and a toilet scale preventer 6 having a hook portion was manufactured.
[0026]
Example 3 (Use of toilet scale preventer)
3 and 4 show a state in which the toilet scale preventer 6 having the latching portion manufactured in Example 2 is used as a trap portion of a men's toilet. The men's toilet shown in FIG. 3 is a so-called trap detachable toilet in which no trap is provided in the drain pipe 7, and a trap 8 is detachably incorporated in the bottom of the toilet 9. The trap 8 is provided with a holding lid 11 having a hook 10 fixed to the lower surface thereof. The ring 5 of the toilet scale preventer 6 is hooked on the hook 10, and the molded body 1 stored in the bag body 2. Is soaked in the stored water. Although not shown, a handle portion and a water passage hole can be provided on the upper surface of the trap 8.
[0027]
When urine and / or washing water flows into the trap reservoir from the gap between the trap 8 and the toilet 9, the molded body 1 stored in the bag 2 is immersed in the stored water, and the acidic substance of the molded body dissolves. Elutes out of the bag. At this time, the dissolution rate of the molded body and the type, thickness and density of the water-permeable material are adjusted so that the pH of the trapped water is 3.5 to 4.5, preferably around pH 4.0. If the pH of the trap water is maintained at 3.5 to 4.5, the trap water is diluted by the urine and the wash water that has flowed in, and the toilet drain pipe has a mixed water of pH 5.0 to 6.0. Flows in and scales can be prevented from sticking to the toilet drain pipe.
[0028]
Example 4 (Examination of nonwoven fabric)
The molded body prepared in Example 1 [No. 1] is composed of three types of olefin-based spunbond nonwoven fabrics. (1) Elves S0203WDO (weight per unit; 20 g / m)^Three, Thickness 0.13mm), (2) Elves S0403WDO (weight; 40g / m^Three, Thickness 0.25mm), (3) Elves S1003WDO (weight per unit: 100g / m^Three, Thickness 0.47 mm), and three types of toilet scale preventers were manufactured as described in Example 2. As described in Example 3, these three types of toilet scale preventers were mounted on an actual trap detachable toilet, and the urine stone adhesion state and the like were examined. The results are shown in Table 1. From Table 1, (1) When S0203WDO is used, the elution rate of the solid organic acid through the nonwoven fabric is fast, the drug life is shorter than the rental period (about 1 month), and the pH in the trap is slightly too low There was a trend. In addition, when (3) S1003WDO was used, the elution rate of the solid organic acid through the nonwoven fabric was slow, and a slight amount of urine stone was observed. On the other hand, when (2) S0403WDO is used, the elution rate of the solid organic acid through the non-woven fabric is appropriate and the pH of the trapped water is maintained at 3.5 to 4.5. It was found that the drug life almost coincided with the rental period (about 1 month). In any case, no collapse of the molded body was observed, and there was no trouble associated with the collapse.
[0029]
[Table 1]

[0030]
【The invention's effect】
According to the method for preventing the sticking of the scale in the trap detachable toilet according to the present invention, the sticking of the scale to the trap water storage part or the toilet drain pipe can be prevented easily and for a long time.
[Brief description of the drawings]
FIG. 1 is a perspective view of a toilet scale preventer used in the present invention.
FIG. 2 is a perspective view of a toilet scale preventer having a hook used in the present invention.
FIG. 3 is a diagram showing a use state of a toilet scale preventer used in the present invention in a trap detachable men's toilet.
FIG. 4 is an explanatory diagram when the toilet scale preventer used in the present invention is used in a trap detachable boys' toilet.
[Explanation of symbols]
1 Molded body (Solid type scale inhibitor)
2 bagsbody
3 Scale preventers for toilets
4 Periphery heat seal part of bag
5 Ring (holding part)
6 Toilet scale preventer with hooks
7 Drainage pipe
8 Detachable trap
9 Toilet bowl
10 hook
11 Holding lid

Claims (4)

Maintaining the pH of the trap water in the trap detachable toilet at 3.5 to 4.5 with a solid type scale inhibitor containing solid acid as an active ingredient, housed in a bag made of a water permeable material. A method for preventing scale from sticking in a toilet with a removable trap. Anti-sticking method of scale in the trap removable toilet of claim 1, wherein the water-permeable material is a nonwoven fabric. The method for preventing adhesion of scale in a trap detachable toilet according to claim 2, wherein the nonwoven fabric is a spunbonded nonwoven fabric. The method for preventing scale sticking in a trap detachable toilet according to any one of claims 1 to 3 , wherein a solid type scale inhibitor containing a solid acid as an active ingredient is hooked on the detachable trap.

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