JPH03224923A - Dirt-preventing/deodorizing method for toilet bowl - Google Patents

Abstract

PURPOSE:To prevent a toilet bowl from being dirty, and bad smell from being generated by arranging a molded body consisting of a solid acid as an effective component, molding base material, and corrosion-proof agent, on the way of a toilet bowl flush water piping, and dissolving the molded body in a dissolving device, and by permitting dissolving water to flow into the toilet bowl. CONSTITUTION:The solid acid of the sodium hydrogensulfate, sulfamin acid, citric acid, or the like, of 30wt.% or more, 70wt.% or less molding base material consisting of sublimation substance and water-soluble substance, and 10wt.% or less of corrosion-proof agent are mixed and a molded body is formed. Then, the molded body mainly composed of the solid acid is set in a dissolving device disposed on the way of a toilet bowl flush water piping. Besides, the water in which a part of the molded body is dissolved in the flush water flows on a toilet bowl surface and into a toilet bowl trap 5, and the heavy metal of iron, manganese, or the like is prevented from being precipitated, and a scale is prevented from being generated, and ammonia is deodorized.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for preventing staining and deodorizing a toilet bowl surface and a toilet trap, and more specifically, it relates to a method for preventing contamination of a toilet bowl surface by a metallic compound, and a method for preventing scale of a toilet bowl trap. Concerning the prevention and deodorization of bad odors generated from toilet bowls.

The toilet bowl antifouling and deodorizing method of the present invention can be used for various types of flush toilet bowls.

[Conventional technology]

Heavy metals such as iron and manganese, which are present in trace amounts in the flushing water, gradually adhere to the surface of the toilet bowl and become contaminated black, causing discomfort to the user.

Toilet traps, especially urinal traps, are prone to scale called urinary stones, which are made up of a mixture of calcium-based compounds and organic matter produced by the decomposition of urine, impairing the flow of urine and flushing water, and causing serious problems. The drain pipe is blocked and the toilet becomes unusable.

In addition, from urine accumulated on the toilet surface and toilet trap,
Ammonia is produced by the decomposition of urine.

Conventional methods of antifouling and deodorizing toilet bowls include dissolving chemicals in a dissolver installed in the flushing water pipe and cleaning the toilet bowl surface with the dissolved solution, and dissolving chemicals in low-tank hand washing water and cleaning the toilet bowl surface with the dissolved water. Cleaning methods have been put into practical use.

Various drugs containing surfactants, bactericides, and fragrances have been proposed for use in these methods.

For example, Japanese Patent Publication No. 45-30706 describes a deodorant cleaning agent for flush toilets that is made by melt-mixing a surfactant, an ion sequestering agent, a fragrance, etc. with polyethylene glycol or polypropylene glycol, and then molding the mixture. Japanese Unexamined Patent Publication No. 168668/1987 discloses a cleaning and stain-proofing fragrance prepared by cooling and molding a mixed melt consisting of polyethylene glycol, water-soluble aromatic substances, nonionic surfactants, and additives such as fragrances. It is described in.

Furthermore, British Patent No. 1069213 describes a method of dissolving disinfectants and detergents in a dissolver installed in a flushing water pipe. Japanese Patent Laid-Open No. 62-38 discloses a method for installing the washing water flow path, under the faucet of a low tank with a hand wash part, in the toilet trap part, in the washing water storage tank part, in the drain pipe, and in the washing water piping.
No. 299.

Furthermore, a molded product containing a solid acid as an active ingredient is gradually dissolved in a dissolver installed in the middle of the toilet flush water pipe, and the dissolved water flows into the toilet bowl after the flush water has finished flowing, and is deposited on the toilet surface. There are methods for preventing black stains, preventing scale in toilet traps, and removing bad odors from toilet bowls.

[Problem that the invention seeks to solve]

The use of conventional agents consisting of surfactants, disinfectants, and fragrances is effective in preventing soiling of toilet bowl surfaces with organic substances and in masking bad odors. However, it is not effective at all in preventing black contamination due to the adhesion of heavy metals such as iron and manganese, which is the most problematic contamination of toilet bowl surfaces.Furthermore, the scale prevention effect of toilet bowl traps is not sufficient, and the use of disinfectants in septic tanks is not effective at all. The inflow interferes with the action of septic tank microorganisms and reduces the purification ability of the septic tank.

The use of cleaning deodorizers consisting of surfactants and fragrances is effective in preventing stains caused by organic substances on the toilet bowl surface and in masking bad odors. It has no anti-scaling effect.

The method of adding an ion sequestering agent to urine or flush water is quite effective in preventing black stains caused by heavy metals such as iron and manganese on the toilet bowl surface and in preventing scale in the toilet trap.

However, in order to completely prevent black staining on the toilet bowl surface and scale adhesion in the toilet bowl trap, apply an ion sequestrant to urine at 0. It is necessary to use 3-1% by weight, and
It has no effect on deodorizing bad odors. Generally, ion sequestering agents are expensive and this method is difficult to widely popularize.

Apply an anti-scaling agent containing a solid acid as the main ingredient to the toilet drain pipe inlet, the wash water channel on the inner wall and bottom of the toilet, under the faucet of the low tank with hand basin, the toilet trap, the wash water storage tank,
The method of installing in the drain pipe or in the flush water pipe is quite effective in preventing fouling of the toilet bowl surface, preventing the trap from skulking, and deodorizing ammonia. However, in this method, since the drug eluted after one use is diluted with the entire amount of washing water, a large amount of drug is required to always maintain the drug concentration in the washing water above the effective concentration.

In addition, a method in which a molded product containing a solid acid as an active ingredient is dissolved in a dissolver installed in the middle of the toilet flush water piping and the dissolved water flows into the toilet bowl prevents black contamination on the toilet bowl surface and eliminates the problem in the toilet trap. Although it is an effective method for preventing scale and removing bad odors from toilet bowls, it corrodes the copper and copper alloy wash water piping and the copper and copper alloy dissolver, causing leakage of wash water from the pipes and the dissolver. This causes a decline in the function of the toilet, making it difficult to use the toilet.

Corrosion inhibitors for copper and copper alloys include, for example, 1
．． Triazole compounds such as 2.3-benzotriazole, 1-hydroxybenzotriazole, tolyltriazole, 2-mercaptobenzothiazole, 2.5-dimercapto-1,34-thiazole, 5-amino-1,
Thiazole compounds such as 3,4-thiadiazole-2-thiol, melamine, triazine compounds such as 2,4-diamino-6-phenyl-5-triazine, thiourea-based, imidazole-based, and guanidine-based compounds, tallow diamine - Diolefinic acid salts and the like are used for various purposes, and when these compounds are added to an aqueous solution at a predetermined concentration and dissolved, they each exert a corrosion-preventing effect.

However, in order to use these compounds for the purpose of preventing corrosion of the wash water pipe and dissolver material using solid acid molded bodies installed in the toilet wash water pipe, it is necessary to always inject it into the wash water at a constant concentration. Must be.

Methods for injecting corrosion inhibitors into cleaning water at a constant concentration include methods of dissolving the corrosion inhibitor in advance at a high concentration and injecting the highly concentrated liquid into the piping, and methods of injecting the corrosion inhibitor alone and/or
Or a molded body of corrosion inhibitor mixed with a binder and molded,
Examples include a method in which the solid acid is placed in a solution and the corrosion inhibitor is gradually dissolved with washing water, and a method in which the corrosion inhibitor is added to the solid acid molded body and the corrosion inhibitor is dissolved at the same time as the solid acid. .

However, in these methods, the saturated solubility of the corrosion inhibitor is less than a few percent, so the amount of solution is large and a large dissolution tank is required. Equipment such as an injection pump is required, and its practical use is difficult due to the space and cost for installing such equipment.

In the method of placing the corrosion inhibitor molded body in the melter at the same time as the solid acid molded body, it is difficult to maintain the dissolved concentration of the corrosion inhibitor at a constant concentration relative to the dissolved concentration of the solid acid, and it is difficult to prevent corrosion. It is technically more difficult to match the consumption rate of the agent molded body to the consumption rate of the solid acid molded body, and
Since manufacturing equipment for manufacturing the corrosion inhibitor molded body is also required, this method cannot be said to be advantageous in terms of cost.

Furthermore, although the method of adding a corrosion inhibitor to a solid acid molded body is an advantageous method in terms of equipment and manufacturing costs, the compounds that can be added are limited by the physical and chemical properties of the corrosion inhibitor. That is, when compounds such as 2-mercaptobenzothiazole and 2,5-dimercapto-1,3,4-thiadiazole, which have a small amount of saturated dissolution in water and have a slow dissolution rate, are added to a solid acid molded product, This lowers the dissolved concentration and reduces the antifouling and deodorizing effects, and the dissolved concentration of the corrosion inhibitor is also low, so the corrosion preventing effect is not sufficient. Thiourea-based and phenylthiourea-based compounds form compounds that are insoluble with copper dissolved in water, causing black crystals to be mixed into the flushing water, thereby increasing black staining on the toilet bowl surface.

Additionally, if a compound that is oily at room temperature, such as beef tallow diamine diolefinic acid salt, is added to a solid acid molded product, the molded product will easily crumble when it comes into contact with dissolved water, and the shelf life of the molded product will be shortened. Becomes shorter.

When other compounds are added to a solid acid molded product, they may decompose over time due to reaction with the solid acid, or they may react with the molding base and additive components, reducing the corrosion prevention effect and the addition effect of the additive components. There are obstacles such as causing
The types of corrosion inhibitors that can be added to solid acid compacts are limited in various ways.

An object of the present invention is to provide a method suitable for preventing black stains on the surface of a toilet bowl, preventing scaling from sticking to a toilet trap, and deodorizing ammonia generated from a toilet bowl, without corroding copper and copper alloys.

[Means for solving problems]

That is, in the present invention, a molded product containing a solid acid as an active ingredient, a molding base, and a corrosion inhibitor is dissolved in a dissolver installed in the middle of a toilet flush water pipe, and the dissolved water is used to dissolve the molded product on the toilet surface and inside the toilet trap. This is a method of antifouling and deodorizing.

In the present invention, the solid acid is an acidic substance that is solid at room temperature, and is not particularly limited as long as the pH of the dissolved water is 5 or less when dissolved in water at a concentration of 1% by weight or less. Examples include water-soluble salts of strong acids and weak bases such as sodium hydrogen sulfate, potassium hydrogen sulfate, ammonium sulfate, and sulfamic acid. Also, citric acid, maleic acid, isophthalic acid, tartaric acid, malic acid, benzoic acid,
Organic acids such as succinic acid and adipic acid can also be used.

These solid acids can be used singly or as a mixture of two or more.

The amount of solid acid blended in the molded body varies depending on the weight of the molded body, the size of the dissolver, the frequency of use of the toilet bowl, etc., but it can be blended in an amount of 30% by weight or more, preferably 50% by weight or more in the molded body.

The molding base is used for the purpose of dissolving the solid acid at an appropriate rate and without losing its shape, and for making the solid acid moldable when molded into a molded article. As the base, one or a mixture of two or more of a sublimable substance, a water-soluble polymer and/or a surfactant that dissolves without disintegrating when the molded body is brought into contact with water is used.

Baladichlorobenzene is used as the sublimable substance in the molding base. The water-soluble polymer in the base is a water-soluble polymer that is solid at room temperature, such as polyethylene glycol or polypropylene glycol, and the surfactant is a variety of nonionic, cationic, and anionic surfactants. Examples include agents.

In the molded product, the molding base content in the molded product is 70
% by weight or less. Base content in molded body is 70% by weight
If it exceeds this amount, the content of solid acid, which is an active ingredient, will decrease, and the antifouling and deodorizing effects will not be sufficient.

Corrosion inhibitors are always dissolved in a constant ratio with the active ingredient solid acid when dissolving drugs in a dissolver, and are used to prevent corrosion of copper and copper alloys in the dissolver and to clean water piping made of copper and prepared alloys. Added to prevent corrosion.

As corrosion inhibitors, benzotriazole, tolyltriazole and/or their alkali salts can be used. In the molded article, the concentration of the corrosion inhibitor added is 0.5% by weight or more based on the solid acid as an active ingredient, preferably,
1% by weight or more, and 10% by weight based on the molded object
The content is preferably 5% by weight or less.

Water-soluble salts of strong acids and weak bases such as sodium hydrogen sulfate, potassium hydrogen sulfate, and ammonium sulfate, solid acids such as sulfamic acid, citric acid, maleic acid, isophthalic acid, tartaric acid, malic acid, benzoic acid, succinic acid, and adipic acid. In order to dissolve in the dissolver and exert the antifouling and deodorizing effect on toilet bowls,
The pH of the dissolved water flowing out from the dissolver may be maintained at 4 to 7.5. Water-soluble salts of strong acids and weak bases such as sodium hydrogen sulfate, potassium hydrogen sulfate, and ammonium sulfate, solid acids such as sulfamic acid, citric acid, maleic acid, isophthalic acid, tartaric acid, malic acid, benzoic acid, succinic acid, and adipic acid. The solid acid concentration for dissolving in the washing water and maintaining the pH of the dissolved water at 4 to 7.5 is 100 to 1000 mg/A.
The dissolved concentration of the corrosion inhibitor required to prevent corrosion of copper and copper alloys in this solid acid solution is 0.5% or more with respect to the solid acid concentration in the solution. If the dissolved concentration of the corrosion inhibitor is less than 0.5%, the corrosion inhibiting effect on copper and copper alloys will not be sufficient. Furthermore, if the concentration of the corrosion inhibitor exceeds 10% based on the solid acid, the corrosion inhibitor will swell when the molded body is dissolved, and the molded body will collapse.

The toilet bowl antifouling/deodorizing agent of the present invention is a molded product having an arbitrary shape that can be stored in a dissolving vessel, such as a spherical, cylindrical, disc, cubic, rectangular parallelepiped shape, etc. It is a molded product of a mixture consisting of a base, a corrosion inhibitor, and optionally added additives. Additives that may be added as desired include dissolution rate regulators, fragrances, coloring agents, bactericidal agents, ion sequestering agents, and the like.

A dissolution rate adjusting agent can be added to the molded product for the purpose of adjusting the dissolution rate of the molded product in water.

Examples of dissolution rate regulators include poorly water-soluble substances, such as fatty acids and higher alcohols, which can be obtained by heating the mixture with the molding base or solid acid, or powders of water-repellent substances, such as fatty acids and higher alcohols. , calcium stearate, magnesium stearate, talc, etc. can be used.

Various prepared fragrances can be added to the molded product for the purpose of masking bad odors and giving off a fragrance, and colorants can be added to the molded product for the purpose of detecting the remaining amount of the molded product, coloring washing water, etc.

It is also possible to add a type of bactericidal agent that does not affect the septic tank or an amount that has a negligible effect, and an ion sequestering agent that does not cause an economic burden.

The toilet bowl antifouling/deodorizing agent of the present invention can be produced by known molding methods such as mixing each component and compressing it into a tablet, or heating a mixture of each component, injecting a melted slurry into a mold, cooling, and solidifying it. It can be manufactured by

The molded article of the present invention is used by being placed in a dissolver installed in the middle of the toilet flush water pipe. A dissolver that can be used to dissolve the molded article of the present invention is used by being installed in the middle of a water pipe for flushing a flush toilet. In other words, in the case of a high tank type, the piping between the high tank and the toilet bowl, in the case of a button type, the piping between the button and the toilet bowl, or in the case of a low tank type, between the low tank and the toilet bowl. Used by installing it in piping. The structure of the dissolver has a float valve and a check valve, and in order to introduce a part of the beginning of the flow of wash water from the wash water pipe into the dissolver, the piping is installed in one part, the introduction pipe, and the melter. It prevents washing water from flowing into the vessel more than a specified amount, prevents dissolved water from flowing out of the dissolver when washing water is flowing through the washing water piping, and allows dissolved water to flow out when washing water has finished flowing. It consists of a check valve directly connected to the float part, and a dissolution chamber in which a molded body containing a solid acid as an active ingredient is installed and a part of the molded body is dissolved with introduced dissolution water. It is fine as long as it is done. Furthermore, there is no particular restriction on the shape of the melting chamber as long as the molded body can be placed inside and there is an air flow opening at the top, and the size of the melting chamber is as follows: The amount of dissolved water is 100-10001nl
What comes in is used. The mechanism of the dissolver is that when the wash water does not flow through the wash water piping, there is no stagnation of water, and when the wash water is used, the water that starts flowing is introduced into the dissolver, and when the amount of water in the dissolver reaches a predetermined amount. When the introduction of wash water stops and the wash water has finished flowing through the wash water pipe, the dissolved water that has dissolved a part of the molded object from the dissolver passes through the wash water pipe, washes the toilet surface, and then flows into the toilet bowl. What stays in the trap is used.

The antifouling/deodorizing method of the present invention is such that when the molded body is melted in a melter installed in the middle of the washing water pipe, the molded body is dissolved without excessively dissolving or collapsing, and also prevents corrosion. Since benzotriazole, tolyltriazole and/or their alkali salts added as agents always dissolve in the same proportion as the solid acid, copper and copper alloys can be used as the dissolver material, and furthermore, copper and copper alloys can be used for cleaning. This is an antifouling and deodorizing method for toilet bowls that does not corrode water piping.

[Effect]

The inventors have demonstrated that water-soluble salts of strong acids and weak bases such as ammonium sulfate, solid acid solutions such as sulfamic acid, citric acid, maleic acid, isophthalic acid, tartaric acid, malic acid, benzoic acid, succinic acid, adipic acid, etc. Corrosion of copper and copper alloys includes general corrosion in which the entire contact surface with solid acid-dissolved water erodes, intergranular corrosion in which corrosion occurs along the grain boundaries of copper and copper alloys, and furthermore, when brass is used, In addition to this, there is a dezincing phenomenon that occurs locally at a depth of several to several hundred micrometers from the surface layer, and these types of corrosion shorten the service life of the wash water piping and melter. and this prevention is
By adding benzotriazole, tolyltriazole and/or their alkali salts to the solution, a protective film is formed on the surface of copper and copper alloy by a chelate compound of copper and benzotriazole and/or tolyltriazole. found that corrosion of copper and copper alloys can be almost completely prevented.

In addition, the present inventors have found that the chelate compound produced by the reaction of benzotriazole and/or tolyltriazole with copper has little corrosion-preventing effect in a strongly acidic solution because the produced chelate compound dissolves in the acid. but,
4, which is the effective pH range for the toilet bowl antifouling and deodorizing method of the present invention.
~7.5, the chelate compound forms a protective film and exhibits a sufficient corrosion prevention effect.Especially in the pH range of 5 to 7, the chelate compound forms a stronger protective film and protects against copper and copper. It has been found that corrosion of the alloy is no problem at all.

Additionally, the inventors have discovered that benzotriazole, tolyltriazole and/or their alkali salts, water-soluble salts of strong acids and weak bases such as ammonium sulfate, sulfamic acid, citric acid, maleic acid, isophthalic acid, tartaric acid, apple A molded product made by pre-mixing acid, benzoic acid, succinic acid, adipic acid, and other solid acids dissolves benzotriazole, tolyltriazole, and /or The ratio of the dissolved concentration of these alkali salts in the washing water and the dissolved concentration of the solid acid in the washing water is not much different, that is, when the dissolved concentration of the solid acid at the initial stage of molding and use is high, benzotriazole and When the dissolved concentration of tolyltriazole is high, and the molding couple is consumed and becomes small, and the dissolved concentration of the solid acid becomes low, the dissolved concentration of benzotriazole and/or tolyltriazole also decreases, and the solid acid and benzodiazole are dissolved. The present invention has been completed by discovering that the ratio of dissolved concentrations of triazole and/or tolyltriazole is approximately constant from the initial use of the molding pair until it is exhausted.

As a result of extensive research into preventing black stains on the toilet bowl surface and scale build-up in the toilet trap, and deodorizing ammonia generated from the toilet bowl, we found that black stains on the toilet bowl surface can be prevented by cleaning water drying on the toilet bowl surface. When washing water, a very small amount of heavy metals such as iron and manganese are oxidized and become insoluble oxides that stick to the surface of the toilet bowl.
We found that calcium apatite (Cas) does not produce insoluble compounds, and that toilet trap scale
(PO4)OH) 40-60% by weight, calcium carbonate (CaCOs) 20-40% by weight, and water-insoluble organic matter 10-30% by weight; calcium-based scale precipitates in water with a pH of 75 or less. Without,
It was discovered that fixed scale dissolves at a pH of 7 or lower, and furthermore, the foul odor emitted from the toilet bowl is caused by the action of urine degrading enzymes and bacteria in the toilet trap, which causes ammonia to be released from the urine or the mixed wastewater of urine and washing water. This is to generate ammonia, and the generation of ammonia can be prevented by reducing the pH of the water remaining in the toilet trap to 7.5 or less.

Washing water usually contains water-soluble heavy metals such as iron and manganese, usually in the form of hydroxides, of approximately 0.1 to 0.01) pm. When the wash water evaporates on the toilet surface and becomes nearly dry, heavy metals such as iron and manganese become concentrated, and heavy metal hydroxides such as iron and manganese reach a saturation concentration or higher and precipitate, and further react with oxygen in the air. It becomes a strong oxide and adheres firmly to the surface of the toilet bowl, resulting in a dark brown to black stain commonly referred to as limescale. Usually, black contamination often occurs in a sloping shape downward from the flush water outflow hole of the toilet bowl, and this is caused by the flush water that drips from the flush water piping after most of the flush water has flowed out. be.

Therefore, precipitation of heavy metal hydroxides such as iron and manganese contained in the washing water due to concentration on the toilet surface is caused by the p
This can be reliably prevented by keeping H acidic. The lower the washing water pH, the more effective it is in preventing heavy metal precipitation.
Considering the corrosion of the drain pipe, the appropriate pH of the washing water is 4 to 7, preferably 5 to 7. Furthermore, since the precipitation of heavy metals from washing water is generated from the dripping water after most of the washing water has flowed out, the pH
A method of flushing washing water with a low amount of water is more effective and is preferably adopted.

Urine usually contains 200 to 3 water-soluble calcium ions.
00ppm, phosphate ion 2000-2500ppm
include. In addition, carbonate ions are contained in the cleaning water, and are further replenished by dissolving carbon dioxide gas in the air. The pH of urine excreted from the body is around 5.5 to 6.5,
When left in the air, the pH will gradually rise, eventually reaching 9.
It reaches ~9°5. When the pH exceeds 7.5, turbidity occurs, and as the pH rises, the turbidity increases, and when the pH rises above 8.5, white precipitates of calcium apatite precipitate, and calcium carbonate crystals form on the surface in contact with air. Produces in a film form. These calcium apatite and calcium carbonate crystals, together with water-insoluble proteins and other organic matter produced by bacteria and enzymes, stick to the toilet trap and grow to form scales commonly called urinary stones.

Therefore, by keeping the pH of the mixed water of urine and flushing water in the toilet trap at 7.5 or lower, it is possible to prevent scale from sticking.Furthermore, when the pH is 7 or lower, the already fixed scale dissolves. It also has a removing effect. The lower the pH in the toilet trap, the better the scale adhesion prevention effect.
, preferably 5 to 7.

Urine contains a large amount of urea, and adults excrete about 30 g of urea per day. In the urine or the mixture of urine and washing water that remains in the toilet trap, urea is decomposed by the action of enzymes and bacteria, and ammonia is produced.
The pH of the urine or urine/wash water mixture increases. pH is 7
．． If ammonia is present in a neutral to acidic solution of 5 or less, the ammonia is fixed in the solution and does not emit into the air, so it does not cause a bad odor, but the pH of the solution
When the value is 8 or more, the amount of ammonia released into the air increases, causing a bad odor in the toilet. When there is scale attached to the toilet bowl trap, bacteria tend to grow in the scale, so urine decomposition is accelerated and more ammonia is generated than in a toilet bowl without scale. Furthermore, once scale is deposited on the toilet bowl or toilet bowl surface, ammonia is generated by decomposition of the urine deposited on the scale portion.

Therefore, by maintaining the pH of the water retained in the toilet trap from neutral to acidic at 7.5 or less, ammonia can be prevented from escaping from the toilet trap. The lower the pH in the toilet trap, the better the ammonia dispersion prevention effect, but if you take corrosion of the drain pipe into consideration, the pH should be 4 to 7
．． 5, preferably 5 to 7. Furthermore, by wetting the surface of the toilet bowl with neutral to acidic water with a pH of 7.5 or less, ammonia generated in the toilet bowl is fixed and prevented from escaping into the air. Furthermore, the pH of the toilet bowl surface is
By flushing with an acidic cleaning solution of 7 or less, it is possible to prevent scale formation on the toilet surface and the toilet bowl, thereby reducing the source of ammonia generation.

If a molded product whose main component is a solid acid is placed in a dissolving vessel, and after the wash water has finished dissolving a part of the molded product, the solution flows into the toilet bowl from the wash water piping. Because the dissolved water in the dissolver wets the toilet surface without diluting it, it effectively prevents the precipitation of heavy metals such as iron and manganese, and the formation of scale on the toilet surface and perforation plate. The deodorizing effect of generated ammonia can also be efficiently achieved.

In addition, when the water dissolved in the molded object flows into the toilet trap, the dissolved water is partially diluted because cleaning water has already accumulated in the trap, but after the dissolved water flows into the toilet trap, the cleaning water Since there is no inflow of water, there is less dilution of dissolved water, and scale formation and ammonia generation in the toilet trap can be effectively prevented.

The toilet bowl antifouling and deodorizing method of the present invention has a solid acid as a main component,
A molded product made of a mixture containing a solid acid, a molding base, benzotriazoletolyltriazole, and/or an alkali salt thereof is dissolved in a dissolver installed in the middle of the wash water piping, and the dissolved water flows out after the wash water flows out. As a result, there is no need to worry about copper or copper alloy corrosion of the piping or melting device material, and the solid acid-dissolved water effectively prevents contamination of the toilet bowl surface, prevents scale formation in the toilet trap, and prevents the formation of scale in the toilet bowl. This is a method of deodorizing ammonia.

〔Example〕

The present invention will be explained in more detail by way of examples.

However, the scope of the present invention is not limited to the same extent by the following examples.

■) Production of molded body Molded body 1 (test sample 1) Powdered sulfamic acid di59% by weight Balajichlorobenzene: 19.5% by weight Polyethylene glycol #1000: 10% by weight Non-ionic surfactant = 10% by weight Benzo Triazole = 1.5% by weight was heated and melted at 90°C, and the molten slurry was 50X50X2
The mixture was cooled and solidified in a 0 mm rectangular parallelepiped container to produce a rectangular parallelepiped shaped body.

Molded body 2 (test sample 2) Powdered citric acid di-40% by weight Balajichlorobenzene: 38% by weight Polyethylene glycol #6000/19% by weight Tolyltriazole-potassium salt: 3% by weight were heated and melted at 90°C to form a molten slurry. was cooled and solidified in a 50 x 50 x 20 mm rectangular parallelepiped container to produce a rectangular parallelepiped shaped body.

Molded body 3 (Test sample 3) 60% by weight of powdered adipic acid Balajichlorobenzene: 19.5% by weight Polyethylene glycol #1000: 10% by weight Benzotriazole = 0.5% by weight were heated and melted at 90°C. slurry 50x50x2
The mixture was cooled and solidified in a 0 mm rectangular parallelepiped container to produce a rectangular parallelepiped shaped body.

Molded body 4 (test sample 4) Powdered succinic acid di55% Balajichlorobenzene: 17.5% by weight Ethylene oxide propion oxide copolymer = 10% by weight Nonionic surfactant: 10% by weight Polyethylene glycol #1000: 5% by weight tolyltriazole-amine salt: 2.5% by weight was heated and melted at 90°C, and the molten slurry was 50x50x2
The mixture was cooled and solidified in a 0 mm rectangular parallelepiped container to produce a rectangular parallelepiped shaped body.

Molded body 5 (test sample 5) 5 parts by weight of benzotriazole per 100 parts by weight of adipic acid
Mix parts by weight and add 10% polyvinylpyrrolidone aqueous solution 1
After adding 5% by weight and kneading with a kneader, extrusion granulation, 90%
Dry for 5 hours at °C to obtain granules with a diameter of 1 mm. The granules were pressure-molded to produce a cylindrical molded body with a diameter of 40 mm and a thickness of 30 mm.

Molded body 6 (comparative sample 1) Powdered sulfamic acid: 60% by weight Balajichlorobenzene = 20% by weight Polyethylene glycol #1000: 10% by weight were heated and melted at 90°C, and the molten slurry was made into a 50×50×2
The mixture was cooled and solidified in a 0 mm rectangular parallelepiped container to produce a rectangular parallelepiped shaped body.

Molded body 7 (comparative sample 2) Powdered sulfamic acid: 60% by weight Balajichlorobenzene: 19.8% by weight Polyethylene glycol #1000 10% by weight Nonionic surfactant: 10% by weight Benzotriazole: 0.2% by weight Melt by heating at 90°C and transfer the molten slurry to 50X50X2
The mixture was cooled and solidified in a 0 mm rectangular parallelepiped container to produce a rectangular parallelepiped shaped body.

Molded body 8 (comparative sample 3) Powdered citric acid: 40% by weight Balajichlorobenzene: 40% by weight Polyethylene glycol #6000: 20% by weight were heated and melted at 90°C, and the molten slurry was made into a 50x50x2
The mixture was cooled and solidified in a 0 mm rectangular parallelepiped container to produce a rectangular parallelepiped shaped body.

Molded body 9 (comparative sample 4) Powdered citric acid: 40% by weight Balajichlorobenzene: 28% by weight Polyethylene glycol #6000 % by weight 20-tolyl triazole: 12% by weight were heated and melted at 90°C, and the molten slurry was mixed into a 50x50x2
The mixture was cooled and solidified in a 0 mm rectangular parallelepiped container to produce a rectangular parallelepiped shaped body.

Molded body 10 (comparative sample 5) Powdered adipic acid: 60% by weight Balajichlorbene 2220% by weight Polyethylene glycol #1000: 10% by weight was heated and melted at 90°C, and the molten slurry was 50x5Qx2
The mixture was cooled and solidified in a 0 mm rectangular parallelepiped container to produce a rectangular parallelepiped shaped body.

Molded object 1) (Test sample 6) Powdered succinic acid: 55% by weight Balajichlorobenzene = 20% by weight Ethylene oxide propion oxide copolymer = 10
Weight% Nonionic surfactant = 10% by weight Polyethylene glycol #1000: 5% by weight was heated and melted at 90°C, and the molten slurry was 50x50x2
The mixture was cooled and solidified in a 0 mm rectangular parallelepiped container to produce a rectangular parallelepiped shaped body.

Molded object 12 (test sample 7) 15% by weight of a 10% aqueous solution of polyvinylpyrrolidone was added to 100 parts by weight of adipic acid, and after kneading with a kneader,
Extrusion granulation and drying at 90° C. for 5 hours yield granules with a diameter of 1 mm. These granules are pressure-molded to a diameter of 40 mm and a thickness of 30 mm.
A cylindrical molded body was produced.

Molded object 13 (comparative sample 8) Polyethylene glycol #1000: 40% by weight ethyl oxide-propion oxide copolymer (nonionic surfactant) -60% by weight was heated and melted at 90°C,
The molten slurry was cooled and solidified in a 50x50x20 mm rectangular parallelepiped container to produce a rectangular parallelepiped shaped body.

2) Test method The molded body was installed in the flush water pipe between the high tank and the toilet of the high tank type urinal piping, and molded bodies 1 to 12 were set in a dissolver, and the performance of the molded body was evaluated.

3) Test dissolver In the test dissolver, water at the beginning of the flow of toilet flushing water is introduced into the dissolver, and when a predetermined amount of water is introduced, the introduction is stopped and a part of the molded object placed in the container is removed. Once dissolved and the flushing water in the piping has finished flowing, it has a structure in which the dissolved water flows from the dissolver through the flushing water piping and onto the toilet bowl surface.

In the dissolver used in the test, the amount of dissolving water introduced into the dissolver for dissolving the molded object was 300 d.

4) Performance evaluation The performance evaluation test was conducted for 5 months, during which time the molded product was observed every week, and if the molded product was visually observed to be 70% or more consumed, it was replaced with a new acid form.

The performance evaluation items and evaluation methods are as follows.

Evaluation item 1: pH of the water remaining in the toilet trap: A new acid form was installed, and the pH of the water remaining in the toilet trap was measured one week later, immediately after using the flushing water. At the same time, the pH of the cleaning water before contacting the molded body was measured.

Evaluation item 2: pH 1 of water adhered to the toilet surface.Installation of new molding,
One week later, the pH of the wash water adhering to the toilet bowl surface was measured immediately after use.

Evaluation item 3 Toilet bowl surface contamination: The state of contamination of the toilet bowl surface was measured by visual observation.

Evaluation item 4 Amount of scale deposited in the toilet trap: A stainless steel wire mesh of 25 mmφ x 70 mm was placed in the toilet trap, and the weight increase after 5 months was measured.

Evaluation item 5 Odor: The odor generated from the toilet bowl was measured by a sensitivity test.

Evaluation item 6 Molded object effective period: In weekly observations, the period from the introduction of the molded object until its replacement was defined as the molded object effective period.

Evaluation item 6 Amount of corrosion on brass test piece: 30X10 at the bottom of the melter and in the middle of the wash water piping between the melter and the toilet bowl.
A brass plate with a diameter of 1.5 mm was installed, and the difference in weight before and after the test was measured and converted to the amount of corrosion for one year.

Evaluation item 7: Collapse of the molded body: Collapse of the molded body was observed during the test period.

Evaluation item 8: Amount of brass corrosion: Brass test pieces were installed in the dissolver and washing water piping, and the amount of corrosion was measured.

5) Evaluation test results The evaluation test results are shown in the attached table.

〔Effect of the invention〕

In the present invention, a toilet bowl antifouling/deodorizing method in which a molded body of a mixture of an active ingredient solid acid and a molding base is installed in a dissolving device installed in the middle of the toilet flushing water pipe is described in the table of the evaluation test results. As shown, there is no practical problem with corrosion of the wash water piping and dissolver material, and the pH of the water stagnant in the toilet trap can be maintained at an acidic level, which prevents scale formation in the toilet trap and bad odor from the toilet bowl. At the same time, p
Contamination of the toilet bowl surface is also prevented by the washing water having acidic H flowing over the toilet bowl surface.

The present invention provides a method for preventing contamination of a toilet bowl surface, preventing scale formation in a toilet bowl trap, and preventing generation of a bad odor from a toilet bowl, and has extremely great public health and industrial significance.

Claims (1)

[Scope of Claims] (1) A molded product containing a solid acid as an active ingredient and consisting of a solid acid, a molding base, and a corrosion inhibitor is dissolved in a dissolver installed in the middle of a toilet flush water pipe, and the dissolved water is (2) In claim (1), the solid acid is an acidic substance that is solid at room temperature, and the solid acid is an acidic substance that is solid at room temperature, (3) In claim (1), the molding base is a mixture of a sublimable substance, a water-soluble polymer and/or a surfactant, and the molding base contains a water-soluble polymer and/or a surfactant. A toilet bowl antifouling/deodorizing method (4) in which the base is contained within 70% by weight of the molded article (1)
(5) In claim (1) or (4), the corrosion inhibitor is benzotriazole, tolyltriazole and/or an alkali salt thereof. (6) In claim (1), a toilet bowl antifouling/deodorizing method (6) in which the amount of added is 0.5% by weight or more based on the solid acid and 10% or less based on the molded article, When the dissolver uses cleaning water, part of the cleaning water flows into the dissolver and dissolves the molded object components, and after the cleaning water has finished flowing, the dissolved water that has dissolved the molded object components flows into the cleaning water piping. A toilet bowl antifouling/deodorizing method characterized by having a structure