JP7078365B2 - Toilet solid cleaner - Google Patents

Description

The present invention relates to a solid cleaning agent for toilets, and more particularly to a solid cleaning agent for toilets used by adhering to the inner surface of a toilet bowl, and a method for cleaning the inner surface of a toilet bowl using the solid cleaning agent.

Conventionally, as a method of cleaning a toilet bowl, for example, a method of putting a cleaning agent into a water storage tank and using it (in-tank method), a method of storing and arranging a cleaning agent in a container or the like at a water injection port of a water storage tank top lid is used. The method of cleaning (on-tank method) is known.

In recent years, with the spread of tankless toilet bowls, changes have been seen in the cleaning method of toilet bowls. For example, a method of storing a cleaning agent in a container and hanging it on the edge of the toilet bowl (rim block), gel-like Methods of using a cleaning agent by adhering it to the inner surface of a bowl of a toilet bowl are becoming widespread.

As such a gel-like detergent, for example, Patent Document 1 proposes a composition containing an adhesion promoter, a surfactant, mineral oil and water, and when the composition is applied to a treatment target. Discloses that it exhibits self-adhesiveness and imparts a wet film to the surface of the object when water passes over the composition. Further, in Patent Document 2, the specification represented by (HO-A ₁ O) _j- (A ₂ O) _k- (A ₃ O) _l- (A ₂ O) _m- (A ₁ O) _n -H A gel-like detergent composition containing the obtained polyoxyalkylene block polymer and water has been proposed.

The inner surface of the toilet bowl (the surface washed with running water in a flush toilet) is a curved surface, and in order to adhere well to such a curved surface, conventional cleaning agents are gel-like as in Patent Documents 1 and 2. It is configured as a cleaning agent.

Japanese Patent Publication No. 2011-513510 JP-A-2015-199936

However, the gel-like cleaning agent used by pasting it on the inner surface of the toilet bowl as described above is stable because it contains a large amount of water inside and may adversely affect the active ingredient and other functional ingredients. There has been a problem that the desired effect and function cannot be sufficiently obtained due to deterioration of the sex and limitation of the content.

Therefore, an object of the present invention is to provide a solid detergent for toilets, which can be used as a solid detergent instead of a gel-like detergent, solve the above-mentioned problems, and can exhibit an excellent cleaning effect for a long period of time.

As a result of diligent studies, the present inventors have made the cleaning agent used by adhering to the inner surface of the bowl of the toilet bowl a solid agent, and have at least two functions of a cleaning region containing a cleaning component and an adhesive region having adhesiveness. We have found that the above problems can be solved by adjusting the characteristics so that they are similar to each other, and have completed the present invention.

That is, the present invention is characterized by the following (1) to (4).
(1) A solid detergent used by adhering to the inner surface of a toilet bowl.
It has a cleaning area and an adhesive area,
The cleaning region and the adhesive region are solid detergents having absorption maximum peaks at wave numbers of 3660 to 3200 cm ^-1 , 3000 to 2840 cm ^-1 and 1150 to 1080 cm ^-1 in the infrared absorption spectrum.
(2) The absorbances of the absorption maximum peaks at the wave numbers 3660 to 3200 cm ^-1 and 1150 to 1080 cm ^-1 in the cleaning region are P3 and P1, respectively, and the wave numbers 3660 to 3200 cm ^-1 and 1150 to 1080 cm ^-1 in the adhesive region. The above-mentioned (1), wherein P1: P3 = 1: 0.2 to 0.5 and P11: P13 = 1: 0.2 to 0.5, respectively, when the absorbance of the absorption maximum peak is P13 and P11, respectively. Solid cleaning agent.
(3) When the absorbances of the absorption maximum peaks in the washing region and the adhesion region at the wave number of 3000 to 2840 cm ^-1 are P2 and P12, respectively, the absorbance ratio is P1: P2: P3 = 1: 0. 4 to 0.7: 0.2 to 0.5 and P11: P12: P13 = 1: 0.4 to 0.7: 0.2 to 0.5. The above-mentioned (1) or (2). Solid cleaning agent.
(4) A method of cleaning the inner surface of the toilet bowl using a solid detergent.
The method for cleaning the inner surface of a toilet bowl, wherein the solid detergent is the solid detergent according to any one of (1) to (3).

The solid detergent of the present invention has a structure having at least two functions of a cleaning region and an adhesive region, and by assimilating the wave number of the absorption maximum peak in the infrared absorption spectrum of the cleaning region and the adhesive region, the toilet bowl bowl. It is possible to prevent the solid cleaning agent from peeling off from the inner surface and to exert an excellent cleaning effect for a long period of time. Further, by making the absorbance ratios of the absorption maximum peaks similar, the effect is exhibited more remarkably.

Further, according to the method for cleaning the inner surface of the toilet bowl of the present invention, the solid cleaning agent firmly adheres to the inner surface of the toilet bowl, and the cleaning effect can be maintained for a long period of time.

FIG. 1 is an infrared absorption (IR) spectrum of a cleaning region in the solid detergent of Example 1. FIG. 2 is an IR spectrum of an adhesive region in the solid detergent of Example 1. FIG. 3 is an IR spectrum of a cleaning region in the solid detergent of Comparative Example 1. FIG. 4 is an IR spectrum of the adhesive region in the solid detergent of Comparative Example 1.

Hereinafter, embodiments of the present invention will be described in detail.
The solid detergent of the present invention is a solid detergent used by adhering to a hard surface on the inner surface of a toilet bowl, and has a cleaning region and an adhesive region, and both the cleaning region and the adhesive region absorb infrared light ( IR) It has an absorption maximum peak at wave numbers 3660 to 3200 cm ^-1 , 3000 to 2840 cm ^-1 and 1150 to 1080 cm ^-1 in the spectrum.

The absorbances of the absorption maximum peaks at the wave numbers of 3660 to 3200 cm ^-1 , 3000 to 2840 cm ^-1 and 1150 to 1080 cm ^-1 in the cleaning region are set to P3, P2 and P1, respectively, and the wave numbers of the adhesive region are 3660 to 3200 cm ^-1 . When the absorbances of the absorption maximum peaks at 3000 to 2840 cm ^-1 and 1150 to 1080 cm ^-1 are P13, P12 and P11, respectively, P1: P3 = 1: 0.2 to 0.5 and P11: P13 = 1: 0. It is preferable to satisfy .2 to 0.5, P1: P2: P3 = 1: 0.4 to 0.7: 0.2 to 0.5 and P11: P12: P13 = 1: 0.4 to 0. .7: It is more preferable to satisfy 0.2 to 0.5.

(Infrared absorption (IR) spectrum)
Both the cleaning region and the adhesive region in the present invention have maximum absorption peaks at wave numbers of 3660 to 3200 cm ^-1 , 3000 to 2840 cm ^-1 and 1150 to 1080 cm ^-1 in the IR spectrum (hereinafter, may be simply referred to as "peaks"). Has.

The reason why the effect of the present invention can be obtained by assimilating the above-mentioned specific peaks of the cleaning region and the adhesive region in the solid detergent is presumed as follows.
Peak 3 at wavenumbers 3660 to 3200 cm ^-1 is derived from the OH expansion and contraction vibration of alcohol, and peak 2 at wavenumbers 3000 to 2840 cm ^-1 is derived from the CH expansion and contraction vibration of alkanes, and peaks at wavenumbers 1150 to 1080 cm ^-1 . 1 is derived from the COC inversely symmetric stretching vibration of the aliphatic ether.
Peak 3 and peak 1 contribute to water absorption performance, and peak 2 contributes to hydrophobicity. That is, by having peaks 1 to 3, it has a functional group showing water absorption and a functional group showing hydrophobicity, and it is presumed that this is a factor for the solid detergent to function properly.

The cleaning area and the adhesive area have specific peaks (peaks 1 to 3), and by analogy, when the solid detergent comes into contact with running water, the adhesive area absorbs water and swells, and the adhesive force becomes stronger. , The washing area also swells and the compatibility with each other increases. Further, the cleaning area absorbs water and swells due to contact with running water, but at that time, a part of the water retained in the adhesive area moves to the cleaning area and promotes the swelling of the cleaning area. As a result, it is presumed that the adhesiveness of the cleaning area to the inner surface of the toilet bowl is developed and the solid detergent is prevented from peeling off from the inner surface of the toilet bowl. As described above, since the solid cleaning agent of the present invention can exhibit adhesiveness to the inner surface of the toilet bowl as a whole, it can be used for a long period of time and exhibits an excellent cleaning effect as a solid cleaning agent for a long period of time. Can be done.

The solid detergent of the present invention can obtain the above-mentioned effect more remarkably by assimilating the absorbance ratios of the specific peaks in the cleaning region and the adhesive region.
Wave number 3660 to 3200 cm that contributes to water absorption performance when the absorbance (P1 and P11) of peak 1 at wave number 1150 to 1080 cm ^-1 derived from COC inverse symmetric expansion and contraction vibration of aliphatic ether is used as a reference (1). By setting the ratio (P1: P3 and P11: P13) of the absorbances (P3 and P13) of the peak 3 at ^-1 to 0.2 to 0.5 in both the cleaning region and the adhesion region, the adhesion with the cleaning region is achieved. It is presumed that the water absorption performance of the region can be made to the same level. In addition, the same degree of water absorption performance indicates a state in which the balance between the swelling rate due to contact with water in the adhesive region and the development rate of adhesiveness due to contact with water in the cleaning region is appropriate.

The absorption band (peak 2) near the wave number of 3000 to 2840 cm ^-1 is a part related to hydrophobicity, and the absorbance of peak 2 (P2 and P12) is set to P1: P2 = 1: 0 with respect to P1 and P11, respectively. It is more preferable to satisfy the relationship of 2 to 1.0 and P11: P12 = 1: 0.2 to 1.0 from the viewpoint of the balance with the functional group exhibiting the water absorption performance, that is, the water absorption rate and the prevention of sagging of the pharmaceutical product. , 1: It is more preferable to satisfy the relationship of 0.4 to 0.7. That is, by setting 1: 0.4 to 0.7: 0.2 to 0.5 in both P1: P2: P3 and P11: P12: P13, the solid detergent can function more preferably. It is even more preferable because it can be used.

Further, it is preferable that the cleaning region and the adhesive region have a peak 4 in the vicinity of a wave number of 1700 to 1600 cm ^-1 derived from the C = O bond of the ester in the IR spectrum from the viewpoint of water absorption rate and solubility adjustment. Peak 4 mainly contributes to hydrophobicity.
The absorbances P4 and P14 of the peak 4 of the washing region and the adhesive region were P1: P4 = 1: 0.05 to 0.3 and P11: P14 = 1: 0.05 to 0, respectively, with respect to the absorbances P1 and P11. It is preferable to satisfy the relationship of No. 3 from the viewpoint of shape retention and solubility, and it is more preferable to satisfy the relationship of 1: 0.05 to 0.2 in any of P1: P4 and P11: P14.

The IR spectrum in the present specification is measured by the KBr tablet method using a Fourier transform infrared spectrophotometer for a measurement sample obtained by scraping off a part of the washing region or the adhesive region by a known method. It is required by doing.

The measurement by the KBr tablet method can be carried out by a known method using an infrared spectrophotometer, and specifically, can be carried out by the following method.
The powdered KBr is finely ground in an agate mortar, a wash area or adhesive area is added thereto, and the wash area or adhesive area and KBr are mixed so as to be well mixed. The mixing ratio of KBr to the cleaning region or the adhesive region is, for example, about 1 to 5 mg for the cleaning region or the adhesive region with respect to 50 mg of KBr. A sample for measuring tablets is prepared by tableting the obtained mixed powder.

The infrared absorption spectrum of the measurement sample is obtained from the difference between the obtained interferogram of the measurement sample and the interferogram by background measurement after Fourier transform processing.

(Solid detergent)
The cleaning region and the adhesive region in the solid detergent of the present invention may have the above-mentioned characteristics (infrared absorption (IR) spectrum).
It is preferred that the washed area is solid and substantially free of water. Here, "substantially water-free" means that water is intentionally not contained when the cleaning area is prepared, and it is inevitable during the preparation of the cleaning area or the storage of the solid detergent. It may contain a small amount of water to be mixed. The amount of water in the washed area can be measured by the Karl Fischer method or the Japanese Pharmacopoeia general test method (constant amount measurement method by drying).

The water absorption swelling rate (water swelling rate) of the washed area is 5 to 20 W / W% / 5 minutes (from the viewpoint of making the balance between the swelling rate of the adhesive area and the adhesive development rate of the washed area more suitable. (Unit) is preferable, and 10 to 20 W / W% / 5 minutes (unit) is more preferable. In this case, the water absorption swelling rate (water swelling rate) of the adhesive region is preferably 2 to 15 W / W% / 5 minutes (unit), more preferably 2 to 10 W / W% / 5 minutes (unit). Further, it is preferable that the water swelling rate of the cleaning region is about 1.5 to 2.5 times faster than the water swelling rate of the adhesive region from the viewpoint of maintaining the adhesiveness of the solid detergent.

The water absorption swelling rate of the washed area can be adjusted by the HLB (Hydrophilic-Lipopicular Balance) value.

The water absorption swelling rate can be determined by the following method.
A pharmaceutical product having a washing area or an adhesive area of 5 to 10 mm square was placed on a glass petri dish having a known mass of φ90 mm, and after measuring the total mass, 10 mL of normal water was added at room temperature and left as it was for 5 minutes. After 5 minutes, the free water is completely removed, the mass is measured, and the amount of water absorbed by each pharmaceutical product is calculated as a percentage.

The cleaning region contains a cleaning component, but is preferably composed of a cleaning composition containing a surfactant as a main agent, and the surfactant is an ionic surfactant (anionic surfactant, cationic surfactant, etc.). Either an amphoteric surfactant) or a nonionic surfactant can be used, and it is more preferable that the detergent composition is composed of a detergency composition containing the nonionic surfactant. Here, the "main agent" refers to a component containing 50% by mass or more, and is a cleaning active ingredient that exerts a cleaning effect in the cleaning region.

As the adhesive region, the one having the characteristics (characteristic absorption band) described in the above (infrared absorption (IR) spectrum) may be used as in the cleaning region. The adhesive region is preferably deformed by pressing, and the solid detergent exhibits adhesiveness to the inner surface of the toilet bowl. One form of the bonded area can be bonded because it can be deformed with a compressive strength lower than that of the cleaning area, and one form of the bonded area can be bonded by having shape-following property with respect to the inner surface of the toilet bowl.

Examples of the nonionic surfactant include polyoxyethylene (POE) and polyoxypropylene (POP) copolymers, polyoxyethylene (POE) alkyl ethers, polyoxyethylene (POE) fatty acid esters, and polyoxyethylene (polyoxyethylene (POE) fatty acid esters). POE) Hardened castor oil derivative, polyethylene glycol and the like can be mentioned.

The adhesive region is composed of a composition (adhesive composition) that easily has adhesiveness at room temperature, but has a peak similar to that of the cleaning region in the IR spectrum, and is therefore the same as the constituent components contained in the cleaning region. Or similar components are included. That is, it is preferably composed of an adhesive composition containing a surfactant as a main agent, and more preferably containing a nonionic surfactant. Specifically, the surfactant may be the same as or different from the surfactant contained in the detergency composition.

The adhesive composition also contains other adhesive components such as a polymer polysaccharide-based adhesive component, a natural product-based adhesive component, a synthetic rubber-based adhesive component, a resin-based adhesive component, an alkylene glycol-based component, and a POE alkyl ether. You may.
The total content of the adhesive components in the adhesive region is preferably 90% by mass or more from the viewpoint of water absorption and swelling, and more preferably 95% by mass or more.

Various additives other than the above can be added to the solid detergent containing the cleaning area and the adhesive area as needed. For example, antioxidants, pigments, fragrances, bactericides / fungicides, and other surfactants. Examples thereof include activators and cleaning aids.

Examples of the antioxidant include citric acid anhydride, dibutylhydroxytoluene, butylhydroxyanisole, ascorbic acid, tocopherol and the like.

Examples of the dyes include Red No. 2, Red No. 3, Red No. 102, Red No. 104, Red No. 105, Red No. 106, Yellow No. 4, Yellow No. 5, Blue No. 1, Blue No. 2, and Green No. 3. Red 201, Red 205, Red 213, Red 214, Red 219, Red 227, Red 230 (1), Red 230 (2), Red 231, Red 232, Orange 207 No., Yellow No. 202 (1), Yellow No. 202 (2), Yellow No. 203, Green No. 205, Blue No. 202, Blue No. 203, Blue No. 205, Brown No. 201, Red No. 401, Red No. 502, Red 503, Red 504, Red 506, Orange 402, Yellow 402, Yellow 403 (1), Yellow 406, Yellow 407, Green 401, Green 402, Purple 401, Black 401 No. etc. can be mentioned.

Examples of fragrances include essential oils extracted from lemon, orange, bergamot, grapefruit, lavender, rosemary, jasmine, rose, peppermint, eucalyptus, linalool, etc .; limonen, linalool, linalool acetate, borneol, citral, citronellal, menthol, cineole And so on.

Examples of the bactericidal agent / antifungal agent include benzalkonium chloride, enilconazole, isopropylmethylphenol, quaternary ammonium salt, poly (hexamethylene) biguanide salt and the like.

Examples of the cleaning aid include EDTA salts; enzymes such as protease, lipase, amylase, pectinase, cellulase, and lysozyme.

These additives can be appropriately contained in a desired content as long as the effects of the present invention are not impaired.

The solid detergent of the present invention includes the above-mentioned cleaning region and the adhesive region, and the form thereof is not limited as long as the solid detergent can be adhered by the adhesive region. That is, a solid preparation having a cleaning region and a preparation having an adhesive region may be separately prepared and bonded to each other, or the cleaning composition and the adhesive composition may be molded together. , The cleaning area and the adhesive area may be integrally formed.

The solid detergent of the present invention is not particularly limited in composition other than the adhesive region and the cleaning region, and may have, for example, an aromatic region having an aromatic action, or a plurality of cleaning compositions having different cleaning actions. The cleaning regions may be formed by laminating or adjoining them, and the composition of the solid cleaning agent can be designed if desired.

The blending ratio of the cleaning region and the adhesive region may be such that the adhesive region is blended in an amount sufficient to allow the cleaning region to adhere to the inner surface of the toilet bowl. For example, the adhesive region is 0 with respect to 100 parts by mass of the cleaning region. .5 parts by mass or more is preferable, 1 part by mass or more is more preferable, and 10 parts by mass or more is further preferable. The upper limit is preferably 30 parts by mass or less, more preferably 20 parts by mass or less.

Further, it is not necessary to make the cleaning area and the adhesive area the same size. For example, in the case of a solid cleaning agent composed of only a cleaning part having a cleaning area and an adhesive part having an adhesive area, the main part on the adhesive side of the cleaning part is used. It suffices if the adhesive portion is adhered to at least a part of the surface.

(How to clean the inner surface of the toilet bowl)
The method for cleaning the inner surface of the toilet bowl according to the present invention is characterized by using the above-mentioned solid detergent. The cleaning method includes a step of adhering the solid cleaning agent to the inner surface of the toilet bowl by pressing the adhesive region portion against the inner surface of the toilet bowl, and the step of adhering the solid cleaning agent to the inner surface of the toilet bowl. It includes a step of developing adhesiveness by absorbing water in the solid cleaning region of the solid cleaning agent.

For example, the adhesive region is arranged so as to be in contact with the inner surface of the toilet bowl portion, and the solid detergent is adhered by pressing the solid detergent against the inner surface of the toilet bowl from the cleaning region side. When pressing, it is preferable to press with a strength lower than the compressive strength of the cleaning region and higher than the compressive strength of the adhesive region.

The solid detergent adhering to the inner surface of the toilet bowl initially adheres to the inner surface of the toilet bowl at the adhesive region, and as the adhesive region and the cleaning region absorb water and swell due to contact with the water flow, the cleaning region also develops appropriate adhesiveness. Will be. Therefore, even if the adhesiveness of the adhesive region is lost, the cleaning region can also serve as the adhesive region, and the solid cleaning agent can be prevented from peeling off. As a result, the solid detergent can be used for a long period of time, and an excellent cleaning effect on the inner surface of the toilet bowl can be exhibited for a long period of time.

Hereinafter, the present invention will be further described with reference to Examples and Comparative Examples, but the present invention is not limited to the following examples.

(Example 1 and Comparative Example 1)
According to the formulation of the adhesive region shown in Table 1 (Example 1) or Table 2 (Comparative Example 1), each component is sequentially stirred and mixed at 90 to 100 ° C., and when all the components become uniform, the mixture is naturally cooled. , An adhesive composition (adhesive region) was prepared.

Then, according to the formulation of the washing area shown in Table 1 (Example 1) or Table 2 (Comparative Example 1), the components other than the fragrance were sequentially stirred and mixed at 80 ° C., and the fragrance was added when all the components were dissolved. The entire composition was stirred uniformly. The mixed composition was poured into a mold, cooled and solidified to prepare a cylindrical cleaning composition (cleaning region) (3 g) having a diameter of 27 mm and a thickness of 8 mm.

About 0.3 g of the melted adhesive composition was adhered to the bottom of the detergency composition obtained above by drip infusion to prepare a solid detergent.

(Evaluation of IR spectrum)
The IR spectrum of the cleaning region or the adhesive region constituting the solid detergent was measured by the following procedure.
The powdered KBr was finely ground in an agate mortar, a wash area or adhesive area was added thereto, and the wash area or adhesive area and KBr were mixed so as to be well mixed. The mixing ratio of KBr to the washing region or the adhesive region was 2 to 3 mg for the washing region or the adhesive region with respect to 50 mg of KBr. A sample for measuring tablets was prepared by tableting the obtained mixed powder.

The obtained measurement sample was set in a Fourier transform infrared spectrophotometer (FT / IR 660plus manufactured by JASCO), and an infrared absorption spectrum was obtained under the following measurement conditions. The obtained spectrum was corrected by background measurement.
Wavenumber range: 4000-400cm ^-1
Resolution: 4 cm ^-1
Accumulation number: 16 times

The obtained infrared absorption spectrum is converted into absorbance from the transmittance (% T) of the absorption maximum peak by a measuring device, and the absorbance of the maximum peak is corrected by using the absorbance values at both ends of each absorption band. did.
The spectra of the adhesive region and the cleaning region of Example 1 are shown in FIGS. 1 and 2, and the spectra of the adhesive region and the cleaning region of Comparative Example 1 are shown in FIGS. 3 and 4, respectively. In the figure, the peak at wave number 3660 to 3200 cm ^-1 is 3, the peak at 3000 to 2840 cm ^-1 is 2, the peak at 1150 to 1080 cm ^-1 is ¹ , and the peak at 1700 to 1600 cm -1 is 4.
Table 3 shows the absorbance ratio of each peak when the wave numbers of peaks 1 to 4 and the absorbance of peak 1 are set to 1 (reference).

(Measurement of water absorption swelling rate)
The water absorption swelling rate was determined by the following method.
A pharmaceutical product having a cleaning area or an adhesive area of 5 to 10 mm square was placed on a glass petri dish having a known mass of φ90 mm, and the total mass was measured. 10 mL of normal water was added thereto at room temperature, and the mixture was allowed to stand for 5 minutes. After 5 minutes, the water was completely removed, the mass of the pharmaceutical products was measured, and the amount of water absorbed by each pharmaceutical product was calculated as a percentage.

The water absorption and swelling rate of the adhesive region in Example 1 was 4 to 8 w / w% / 5 minutes, and the water absorption and swelling rate of the adhesive region in Comparative Example 1 was 8 to 11 w / w% / 5 minutes.
The water absorption and swelling rate of the washed area in Example 1 was 10 to 15 w / w% / 5 minutes, and the water absorption and swelling rate of the washed area in Comparative Example 1 was 10 to 121 w / w% / 5 minutes.

(Evaluation of running water adhesiveness)
Solid cleaning of Example 1 and Comparative Example 1 on the slope near the end of the inner surface of the toilet bowl of a toilet (CS220B manufactured by TOTO Ltd.) installed in a test room under the conditions of room temperature of 25 to 35 ° C. and humidity of 65 to 85% RH. The agent was applied with a force of 2 kgf (19.6 N) by a push-pull gauge so that the adhesive region side was in close contact with the inner surface of the bowl. Then, from 8:00 am to 10:00 pm, water was flushed into the bowl once every hour (about 2 L flushing 15 times). It was left in that state for 7 days, and after 7 days, it was confirmed whether or not the solid detergent was peeled off.
The solid detergent of Example 1 exhibited excellent adhesiveness, and the solid detergent was maintained in a state of being adhered to the inner surface of the toilet bowl without shifting the position.
The solid detergent of Comparative Example 1 had sagging in the cleaning area (it had no shape retention and lost its shape) and peeled off from the inner surface of the toilet bowl.

From the above results, the solid detergent of the present invention exhibits excellent running water adhesion by having a specific peak and an absorbance ratio in the IR spectrum in the cleaning region and the adhesive region, and is excellent in cleaning the inner surface of the toilet bowl. The effect can be exerted for a long period of time.

Claims (3)

A solid detergent used by adhering to the inner surface of the toilet bowl.
It has a cleaning area and an adhesive area,
The cleaning region and the adhesive region have absorption maximum peaks at wave numbers of 3660 to 3200 cm ^-1 , 3000 to 2840 cm ^-1 and 1150 to 1080 cm ^-1 in the infrared absorption spectrum.
The absorbances of the absorption maximum peaks at the wave numbers of 3660 to 3200 cm ^-1 and 1150 to 1080 cm ^-1 in the cleaning region are P3 and P1, respectively, and the absorption maximum peaks at the wave numbers of 3660 to 3200 cm ^-1 and 1150 to 1080 cm ^-1 in the adhesive region. A solid cleaning agent having P1: P3 = 1: 0.2 to 0.5 and P11: P13 = 1: 0.2 to 0.5, respectively, when the absorbances of P13 and P11 are P13 and P11, respectively. A solid detergent used by adhering to the inner surface of the toilet bowl.
It has a cleaning area and an adhesive area,
The cleaning region and the adhesive region have absorption maximum peaks at wave numbers of 3660 to 3200 cm ^-1 , 3000 to 2840 cm ^-1 and 1150 to 1080 cm ^-1 in the infrared absorption spectrum.
The absorbance of the absorption maximum peak at the wave number of 3660 to 3200 cm ^-1 in the cleaning region and the adhesion region is P3 and P13 , respectively, and the absorbance of the absorption maximum peak at the wavenumber of 3000 to 2840 cm ^-1 is P2 and P12, respectively, and When the absorbance of the absorption maximum peak at the wave number of 1150 to 1080 cm ^-1 is P 1 and P 11 , respectively, the ratio of the absorbance is P1: P2: P3 = 1: 0.4 to 0.7: 0. A solid cleaning agent having 2 to 0.5 and P11: P12: P13 = 1: 0.4 to 0.7: 0.2 to 0.5. It is a method of cleaning the inner surface of the toilet bowl using a solid detergent.
The method for cleaning the inner surface of a toilet bowl, wherein the solid detergent is the solid detergent according to claim 1 or 2.

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