JP7130471B2 - Cleaning set and its use - Google Patents

Description

The present invention relates to a cleaning set and its use.

From the viewpoint of oral hygiene, etc., it is important to wash oral appliances such as dentures, mouthpieces and retainers.

For example, cleaning of dentures and the like using a solid cleaning agent containing an oxygen-based bleaching agent is generally performed (Patent Document 1). Cleaning of dentures and the like using a solid cleaning agent is usually carried out by immersing the dentures and the like in water containing the solid cleaning agent and allowing the dentures to stand for a certain period of time.

In addition, solid detergents include solid detergents that can be used for various oral appliances such as full dentures and partial dentures, and solid detergents that are suitable for oral dental appliances that have metal. Detergents are on the market.

Japanese Patent No. 5561987

The present inventor has proposed a solid detergent containing an oxygen-based bleaching agent having a relatively high pH and a solid detergent containing an oxygen-based bleaching agent having a relatively low pH. In comparison, the disintegration property in water is poor, and it has been found that a problem arises that it takes a long time for the disintegration of the solid detergent.

Accordingly, an object of the present invention is to provide a means for improving the disintegration property in water of a solid cleaning composition containing an oxygen-based bleaching agent and having a relatively high pH.

The inventors of the present invention have made intensive studies in view of the above problems, and found that a solid cleaning composition containing an oxygen-based bleaching agent having a pH of neutral or higher when dissolved in water. It has been found that the disintegratability of the solid cleaning composition in water is improved by combining the solid cleaning composition with an ultrasonic cleaner. The present invention has been completed as a result of further studies based on this knowledge, and is described below.
Section 1. A cleaning set comprising a solid cleaning composition containing an oxygen-based bleaching agent and having a neutral or higher pH when dissolved in water, and an ultrasonic cleaner.
Section 2. Item 2. The cleaning set according to Item 1, wherein the solid cleaning composition has a pH of 7 to 12 when dissolved in water.
Item 3. 3. The cleaning set according to Item 1 or 2, wherein the ultrasonic cleaner has an output of 3 to 35W.
Section 4. Item 4. The cleaning set according to any one of Items 1 to 3, wherein the oxygen-based bleaching agent is at least one selected from the group consisting of hydrogen persulfate, perborate, percarbonate and persulfate.
Item 5. Item 5. The cleaning set according to any one of items 1 to 4, which is used for cleaning the interior of the oral cavity.
Item 6. A cleaning method comprising combining a solid cleaning composition containing an oxygen-based bleaching agent and having a neutral or higher pH when dissolved in water and an ultrasonic cleaner.

According to the cleaning set of the present invention, a solid cleaning composition containing an oxygen-based bleaching agent and having a neutral or higher pH when dissolved in water can be disintegrated in a shorter period of time. Therefore, according to the cleaning set of the present invention, the object to be cleaned can be cleaned simply and efficiently.

FIG. 1 is an illustration of a model diagram of the appearance of an ultrasonic cleaner. FIG. 2 is a photograph of the tablet used in the test example as seen obliquely from above. FIG. 3 is a photograph of the tablet used in the test example viewed from right above. FIG. 4 is a side view of the tablet used in the test example. FIG. 5 is an illustration showing the state of a tablet that has substantially disintegrated into two or more from the vicinity of the center of the tablet in the test example.

The present invention provides a cleaning set comprising a solid cleaning composition containing an oxygen-based bleaching agent and having a neutral or higher pH when dissolved in water, and an ultrasonic cleaner.

Solid Cleaning Composition The solid cleaning composition of the present invention has a neutral or higher pH when dissolved in water. Here, neutral or higher means pH 7 or higher. means. More specifically, the solid cleaning composition "having a neutral or higher pH when dissolved in water" is obtained by completely dissolving 2.65 g of the solid cleaning composition in 150 mL of water at 25°C. It means a solid cleaning composition from which the resulting solution has a pH of 7 or higher. The pH is preferably pH 7-12, more preferably pH 7-10. The pH is measured with a pH meter (manufactured by Horiba, Model No. F-53). The water used here is purified water.

The oxygen-based bleaching agent used in the present invention is not limited, and any conventionally known oxygen-based bleaching agent may be used. Preferred examples of the oxygen-based bleaching agent include conventionally known oxygen-based bleaching agents that can be used for cleaning oral cavity fittings such as dentures. Hydrogen persulfate, perborate, percarbonate, persulfate and the like are exemplified as oxygen-based bleaching agents. These may be used individually by 1 type, and may be used in combination of 2 or more type.

Examples of the hydrogen persulfate include alkali metal salts of hydrogen persulfate such as sodium hydrogen persulfate, potassium hydrogen persulfate and lithium hydrogen persulfate, barium hydrogen persulfate, and ammonium hydrogen persulfate. A salt may be a hydrate. Examples of the hydrogen persulfate are preferably alkali metal salts of hydrogen persulfate and the like. The hydrogen persulfate may be a hydrogen sulfate or a double salt of a sulfate, and examples thereof include potassium hydrogen persulfate, potassium hydrogen sulfate, and potassium sulfate double salt. For example, Oxone (Lanxess) is exemplified as a commercial product of potassium hydrogen persulfate, potassium hydrogen sulfate, and double salt of potassium sulfate. These may be used individually by 1 type, and may be used in combination of 2 or more type.

Examples of the perborate include alkali metal salts of perborate such as sodium perborate and potassium perborate, ammonium perborate, etc. The perborate may be a hydrate. . As the perborate, preferably an alkali metal salt of perborate is exemplified. These may be used individually by 1 type, and may be used in combination of 2 or more type.

The percarbonate includes, for example, alkali metal salts of percarbonate such as sodium percarbonate and potassium percarbonate, ammonium percarbonate, etc. The percarbonate may be a hydrate. The percarbonate is preferably an alkali metal salt of percarbonate, and more preferably sodium percarbonate. These may be used individually by 1 type, and may be used in combination of 2 or more type.

The persulfate includes, for example, alkali metal salts of persulfate such as sodium persulfate and potassium persulfate, ammonium persulfate, etc. The persulfate may be a hydrate. As the persulfate, an alkali metal salt of persulfate is preferably exemplified. These may be used individually by 1 type, and may be used in combination of 2 or more type.

The content of the oxygen-based bleaching agent in the solid cleaning composition is not limited as long as the solid cleaning composition exhibits a pH of neutral or higher, and is preferably 3 to 80% by mass in the composition. is exemplified by 5 to 50% by mass.

Foaming agents, chelating agents, surfactants, coloring agents, bactericides, fragrances, rust inhibitors, anti-calculus agents, foam stabilizers, binders, and lubricants may optionally be added to the solid cleaning composition. , excipients, disintegrants, deodorants, preservatives, pH adjusters, oleaginous components, bleach activators, enzymes and the like. Preferred examples of these other components include components that can be conventionally used for cleaning oral cavity fittings such as dentures. The other components may be used singly or in combination of two or more, and the content thereof may be appropriately set according to the purpose.

The solid cleaning composition has a pH of neutral or higher as described above, and the pH depends on the type of oxygen bleaching agent used, the type of other ingredients used as necessary, and the content of these. It can be changed according to the quantity. Therefore, depending on the purpose, the type and content of components that affect the pH may be appropriately determined so that the solid cleaning composition has a pH of neutral or higher. It is easy if you follow

Non-limiting examples of optional other ingredients are provided below.

When the solid cleansing composition contains a foaming agent, the foaming agent may be any known foaming agent. In the present invention, the blowing agent means one capable of generating carbon dioxide in the presence of water. As the foaming agent, preferably, a combination of at least one of carbonate, hydrogencarbonate and double salt thereof and an acid is exemplified.

The carbonate is not limited as long as it is a conventionally known carbonate, and examples thereof include alkali metal salts of carbonic acid such as sodium carbonate and potassium carbonate, preferably sodium carbonate. The carbonate may be anhydrous or hydrated, preferably anhydrous. These may be used individually by 1 type, and may be used in combination of 2 or more type.

The hydrogencarbonate is not limited as long as it is a conventionally known hydrogencarbonate, and examples thereof include alkali metal salts of hydrogencarbonate such as sodium hydrogencarbonate and potassium hydrogencarbonate, preferably sodium hydrogencarbonate. . These may be used individually by 1 type, and may be used in combination of 2 or more type.

The double salt of carbonate and hydrogencarbonate is not limited as long as it is a conventionally known double salt, and examples thereof include sodium sesquicarbonate, which is a double salt of sodium hydrogencarbonate and sodium carbonate. These may be used individually by 1 type, and may be used in combination of 2 or more type.

The acid is not limited as long as it is a conventionally known acid. Acids, inorganic acids such as sulfamic acid, alkali metal salts such as sodium salts and potassium salts thereof, and salts such as alkaline earth metal salts thereof. Examples of acids are more preferably citric acid, malic acid, salts thereof, and the like. These may be used individually by 1 type, and may be used in combination of 2 or more type.

When the solid cleaning composition contains a foaming agent, the content of at least one of carbonate, hydrogencarbonate and double salt thereof and acid is at least one of carbonate, hydrogencarbonate and double salt thereof. There are no restrictions as long as the species and acid can react in water to generate carbon dioxide and the composition exhibits a neutral or higher pH. For example, in the solid cleaning composition, the content of at least one of carbonate, hydrogencarbonate and double salt thereof and acid is preferably 8 to 80% by mass in terms of the total amount of these in the composition. is exemplified, more preferably 10 to 62% by mass.

In addition, when the solid cleaning composition contains a foaming agent, the content of at least one of carbonate, hydrogencarbonate and double salt thereof and the acid is As long as at least one of the double salts and the acid can react in water to generate carbon dioxide, and the composition exhibits a neutral or higher pH, for example, the solid cleaning composition The acid is preferably 4 to 17000 parts by mass, more preferably 4 to 7500 parts by mass with respect to 100 parts by mass of the total amount of medium, carbonate, hydrogen carbonate and at least one of these double salts. .

Although not intended to limit the present invention, when the solid cleaning composition contains a foaming agent, the type and content of the component used as the oxygen-based bleaching agent and the component used as the foaming agent may vary depending on the composition. It can be said that it affects the pH of the Therefore, when the pH of the solid cleaning composition to be produced is mainly affected by the oxygen-based bleaching agent and foaming agent, the types and contents of these components are mainly adjusted as described above so as to achieve the desired pH. can be used in combination as appropriate with reference to

When the solid cleansing composition contains a chelating agent, the chelating agent may be any known chelating agent, and is preferably exemplified by a chelating agent that can be conventionally used for cleaning oral appliances such as dentures. Chelating agents include, for example, ethylenediaminetetraacetic acid and/or salts thereof, polyphosphoric acid and/or salts thereof (eg, tetrasodium pyrophosphate, sodium dihydrogen pyrophosphate, etc.), and the like. These may be used individually by 1 type, and may be used in combination of 2 or more type.

When the solid cleaning composition contains a chelating agent, the content of the chelating agent is not limited as long as the composition exhibits a neutral or higher pH. Preferably 0.1 to 15 mass % is exemplified, more preferably 0.5 to 10 mass % is exemplified.

When the solid cleaning composition contains a surfactant, the surfactant may be any known surfactant, regardless of whether it is a cationic, anionic, nonionic or amphoteric surfactant. can be used. For example, surfactants that can be conventionally used for cleaning oral cavity interior fittings such as dentures are preferably exemplified.

Examples of cationic surfactants include quaternary ammonium salts such as alkyl (C6-C20) trimethylammonium salts, dialkyl (C6-C20) dimethylammonium salts, alkyl (C6-C20) dimethylbenzylammonium salts, alkyl ( C6-C20) amine salts, alkyl (C6-C20) amine ethylene oxide adducts, alkylpyridinium salts and the like. These may be used individually by 1 type, and may be used in combination of 2 or more type.

Examples of anionic surfactants include linear or branched alkylbenzene sulfonates having an alkyl group having an average carbon number of 8 to 16, olefin sulfonates having an average of 8 to 20 carbon atoms in one molecule, Linear or branched alkylsulfoacetate having an alkyl group of 8 to 20 carbon atoms, alkylsulfate having an alkyl group of an average of 8 to 20 carbon atoms, alkanesulfone having an average of 8 to 20 carbon atoms in one molecule and acid salts. Examples of alkyl groups include, but are not limited to, lauryl and myristyl groups. As the anionic surfactant, preferably a linear or branched alkylbenzene sulfonate having an alkyl group having an average of 8 to 16 carbon atoms, an olefin sulfonate having an average of 8 to 20 carbon atoms in one molecule, an average carbon Linear or branched alkylsulfoacetates having an alkyl group of 8 to 20 numbers, alkyl sulfates having an average alkyl group of 8 to 20 carbon atoms, and the like, more preferably alkyl groups of 10 to 18 carbon atoms. linear alkyl benzene sulfonate having 10 to 18 carbon atoms in one molecule, olefin sulfonate having 10 to 18 carbon atoms in one molecule, linear alkyl sulfoacetate having an alkyl group having 10 to 18 carbon atoms, alkyl group having 10 to 18 carbon atoms are exemplified by alkyl sulfates having These may be used individually by 1 type, and may be used in combination of 2 or more type.

Examples of nonionic surfactants include higher alcohol ethylene oxide adducts, higher alcohol propylene oxide adducts, alkylphenol ethylene oxide adducts, alkylphenol propylene oxide adducts, fatty acid ethylene oxide adducts, fatty acid propylene oxide adducts, poly Polyethylene glycol surfactants such as fatty alcohol fatty acid ester ethylene oxide adducts, higher alkylamine ethylene oxide adducts, fatty acid amide ethylene oxide adducts, fat ethylene oxide adducts, polypropylene glycol ethylene oxide adducts, fatty acid esters of glycerol , pentaerythritol fatty acid esters, sorbitol and sorbitan fatty acid esters, sucrose fatty acid esters, polyhydric alcohol surfactants such as alkyl ethers of polyhydric alcohols and fatty acid amides of alkanolamines. These may be used individually by 1 type, and may be used in combination of 2 or more type.

Amphoteric surfactants include, for example, amino acid-type surfactants such as alkylaminopropionates (eg, sodium laurylaminopropionate) having an alkyl group having an average carbon number of 10 to 16, and alkyl groups having an average carbon number of 10 to 16. Alkyldimethylbetaine (lauryldimethylbetaine, stearyldimethylbetaine, etc.) having These may be used individually by 1 type, and may be used in combination of 2 or more type.

Examples of salts of these surfactants include alkali metal salts such as sodium and potassium, alkaline earth metal salts such as magnesium and calcium, ammonium salts, amine salts, and acid addition salts such as hydrochlorides. , preferably sodium salts, and the like. These may be used individually by 1 type, and may be used in combination of 2 or more type.

Among these surfactants, anionic surfactants and nonionic surfactants are preferred, and anionic surfactants are more preferred from the viewpoint of obtaining a good cleaning effect.

These surfactants may be used singly or in combination of two or more.

When the solid cleaning composition contains a surfactant, the content of the surfactant is not limited as long as the composition exhibits a neutral or higher pH. The amount is preferably 0.1 to 5% by mass, more preferably 0.5 to 4% by mass.

The solid cleaning composition of the present invention preferably contains a foaming agent. When the solid cleaning composition of the present invention contains a foaming agent, the solid cleaning composition can be preferably used as a so-called foaming cleaning composition.

From this point of view, the solid cleaning composition of the present invention may preferably contain a surfactant or the like together with the oxygen bleaching agent or together with the oxygen bleaching agent and foaming agent.

The solid cleansing composition of the present invention is not limited as long as it is solid, and solid forms such as tablets, granules, granules, powders, and powders are exemplified. The size and shape of the solid cleaning composition are not limited, either, and may be appropriately set.

The solid cleaning composition of the present invention is prepared by mixing an oxygen-based bleaching agent and, if necessary, other ingredients, and optionally granulating, tableting, etc. according to a known procedure to obtain a desired shape, size, and shape. Manufactured by formulating into shapes.

Although not intended to limit the present invention, for example, when the solid cleansing composition of the present invention is a tablet, the mass per tablet may be appropriately set according to the amount of the composition used in one cleansing. Good, but for example about 1 to 20 g, preferably 1 to 10 g.

Although not intended to limit the present invention, for example, when the solid cleansing composition of the present invention is in the form of tablets, the size of each tablet may be appropriately set according to the amount of the composition used in one cleansing. For example, the diameter is 10 to 50 mm, preferably 10 to 30 mm, and the thickness is 1 to 20 mm, preferably 1 to 10 mm.

In the present invention, the disintegration of the solid cleaning composition is carried out while the solid cleaning composition of the present invention is brought into contact with water. As long as the solid cleaning composition of the present invention is in contact with water, there is no limitation, but it is usually preferable to bring the composition into contact so that the entire composition is immersed in water. The contact may be carried out, for example, by adding the solid cleaning composition of the present invention to water, or by adding water to the solid cleaning composition of the present invention.

The object to be washed with the solid cleaning composition of the present invention is not limited as long as it is intended for cleaning. be. The dentures may be complete dentures or partial dentures. Examples of the cleansing material are preferably metal-containing oral appliances, such as metal-containing partial dentures, mouthpieces, and retainers.

In the present invention, the cleaning of the control object is carried out while the control object is brought into contact with water containing the solid cleaning composition of the invention. As long as the water containing the solid cleaning composition of the present invention is in contact with the control object, there is no limitation, but from the viewpoint of effectively cleaning the control object, the entire control object contains the solid cleaning composition of the present invention. It is preferable to make the contact so as to be immersed in water. Said contacting may be carried out, for example, by introducing the solid cleaning composition of the invention into water and then introducing the control, by introducing the water into the solid cleaning composition of the invention and then the control. It may be carried out by dosing the object, or by dosing the solid cleaning composition of the present invention into water containing the object.

In addition, although not limited in this respect, for example, when the solid cleaning composition of the present invention is a foaming composition, it is more preferable that the object is such that the solid cleaning composition of the present invention dissolves in water. It is exemplified to carry out the washing while contacting with the air bubbles that are released at the time.

In the present invention, the control object may be washed in such a state that the control object is brought into contact with water containing the solid cleaning composition of the present invention, and may or may not be subjected to ultrasonic treatment. . According to the present invention, since the disintegration property of the solid cleaning composition is enhanced by the ultrasonic treatment, cleaning can be performed efficiently in a shorter time. It is more preferable that the treatment is carried out under ultrasonication while the control object is in contact with the water containing the composition for treatment. From this point of view, the cleaning may be carried out, for example, by contacting the object with water containing the solid cleaning composition of the present invention as described above, and subjecting the object to ultrasonic treatment immediately. The object may be brought into contact with water containing the solid cleaning composition of the invention, then subjected to ultrasonic treatment, and left for a certain period of time after the ultrasonic treatment is completed.

The time for ultrasonic treatment is not limited, but is exemplified from 1 minute to 30 minutes, preferably from 3 minutes to 15 minutes. may be appropriately set according to the degree of Similarly, the frequency of use of the solid cleaning composition of the present invention is not limited, and may be set appropriately.

The water used for disintegrating and washing the solid cleansing composition of the present invention is not limited, and examples thereof include tap water, purified water, deionized water, physiological saline, and the like. The temperature of the water used is also not limited, but is preferably in the range of 5 to 50°C. The amount of the solid cleaning composition of the present invention and the amount of water to be used are also not limited, and may be set as appropriate according to the shape and size of the solid cleaning composition of the present invention, the degree of soiling caused by cleaning, and the like. Although not limited as long as the effect is obtained, it is exemplified that 1 to 20 g, preferably 1 to 10 g, of the solid cleaning composition of the present invention is used for about 70 to 200 mL of water.
ultrasonic cleaner
The ultrasonic cleaner has at least a cleaning layer into which the solid cleaning composition of the present invention and water are introduced, and a known ultrasonic cleaner can be used insofar as it is provided. From the point of view of more efficiently cleaning an object using the solid cleaning composition of the present invention, an ultrasonic cleaner is charged with at least the solid cleaning composition of the present invention, water, and an object to be cleaned. Equipped with a cleaning layer. Although not intended to limit the present invention, FIG. 1 is illustrated as a model diagram of the appearance of an ultrasonic cleaner.

The size and shape of the ultrasonic cleaner and the cleaning layer are not limited in this way. It may be any size and shape that can accommodate and wash such dentures. From the viewpoints of space saving, ease of handling, etc., it is preferable that the ultrasonic cleaner be compact.

The volume of the washing layer is preferably 100 to 600 mL, more preferably 120 to 300 mL, although not limited to this limit. The shape of the cleaning layer may be circular, elliptical, or semicircular with a diameter or long side of 12 cm or less, or a rectangular shape with a side of 10 cm or less, or an arbitrary shape having a similar size. These lower limits are such that at least the solid cleaning composition of the present invention and water, more preferably at least the solid cleaning composition of the present invention, water, and an object to be cleaned can be charged, and the solid cleaning composition and the object to be cleaned are is not limited as long as it can be sonicated against.

The size and shape of the ultrasonic cleaner may be appropriately set according to the size and shape of the cleaning layer. For example, from the viewpoint of space saving, the size of the ultrasonic cleaner main body is exemplified as a size that can be substantially accommodated in a cube formed with a width of 108 cm, a depth of 108 cm, and a height of 67 cm.

Also, the weight of the ultrasonic cleaner is not limited as long as it is a weight that can be easily carried. The weight is exemplified, for example, from 250 to 600 g, preferably from 300 to 500 g.

The frequency for ultrasonic cleaning is exemplified from 15 to 80 kHz, preferably from 30 to 50 kHz. Further, the output is exemplified as 3 to 35W, preferably 10 to 20W.

The cleaning layer may be provided with a mark (for example, a water level line) or the like as a guide for adding water, if necessary. For example, typically the indicia are visible from the inside of the cleaning layer. Also, at least a part of the cleaning layer may be provided with a discharge port (for example, a sharp edge at the top of the cleaning layer) that facilitates the discharge of the solution in the cleaning layer. Further, the ultrasonic cleaner may use a solid cleaning composition dissolving and/or cleaning tray that can be accommodated in the cleaning layer, and the solid cleaning composition of the present invention is put into the tray. A mark as a guideline, a mark as a guideline for adding water, or the like may be provided, and the required amounts of the solid cleaning composition of the present invention and water may be added according to these marks. Also, the tray may have a mesh structure. Disintegration of the solid cleaning composition and cleaning of the object to be cleaned may be carried out by ultrasonic treatment in the cleaning layer with both or either of them placed on the tray. When the object to be cleaned is removed from the cleaning layer after the ultrasonic treatment, the entire cleaning tray on which the object to be cleaned is placed may be taken out.

The ultrasonic cleaner may or may not have a lid, and may have, for example, a lid that covers the top of the cleaning layer from the point of view of improving usability. Also, the ultrasonic cleaner may have a switch, a timer, or the like that can turn the power on and off. Moreover, the ultrasonic cleaner may be used by connecting a power cord or a power plug, or may be battery-powered.
cleaning set
The cleaning set of the present invention includes the solid cleaning composition and an ultrasonic cleaner. The cleaning set of the present invention may further include an instruction manual, a tray for dissolving the solid cleaning composition, a cleaning tray, a clock holder, a timer, and the like, if necessary.

When the cleaning set of the present invention is used, the method is not limited as long as the object to be cleaned can be cleaned. However, from the viewpoint of efficient cleaning, usually at least the solid cleaning composition of the present invention is contained in the cleaning layer. A preferred example is to put a substance, water, and the object to be cleaned, and then perform ultrasonic treatment.

By combining the solid cleaning composition of the present invention with an ultrasonic cleaner, the disintegration time of the composition can be shortened. Accordingly, the present invention provides a solid cleaning method characterized by combining a solid cleaning composition containing an oxygen-based bleaching agent and having a neutral or higher pH when dissolved in water and an ultrasonic cleaner. Therefore, according to the cleaning set of the present invention and according to the method, the object to be cleaned can be washed simply and efficiently.

Accordingly, the present invention provides a cleaning method characterized by combining a solid cleaning composition containing an oxygen-based bleaching agent and having a neutral or higher pH when dissolved in water and an ultrasonic cleaner. I will provide a. The method is not limited as long as the solid cleaning composition of the present invention and an ultrasonic cleaner are used in combination, and the embodiments are as described above.

EXAMPLES The present invention will be described in more detail below with reference to Examples, but the present invention is not limited to these.
Test example
Preparation of solid cleaning composition
Each component was mixed according to the composition shown in Table 1 to prepare 6 types of solid cleaning compositions (solid cleaning compositions 1 to 5 and Reference Example 1, respectively).

Specifically, each component was mixed and tableted at 3 MPa using a die with a diameter of 17φ to prepare a solid cleansing composition in tablet form weighing 2.65 g per piece. The tablet had a diameter of 24.8 mm and a thickness of 3.48 mm.

In addition, the main components used in producing each composition are as follows.
Sodium hydrogen persulfate Trade name Oxon, manufactured by LANXESS; sodium perborate trade name SODIUM PERBORATE MONOHYDRATE, manufactured by BELINKA; citric acid Trade name citric acid (anhydrous), manufactured by Showa Kako Co.; Fuso Chemical Industry Co., Ltd.; Sodium Carbonate (trade name: Soda Ash Light, Tokuyama Corp.); Sodium Hydrogen Carbonate (trade name): Sodium Bicarbonate, Tokuyama Corp.; .

Ultrasonic Cleaner As an ultrasonic cleaner, an ultrasonic cleaner shown in the model diagram of FIG. 1 was used.

The ultrasonic cleaner was provided with a cleaning layer capable of accommodating at least the solid cleaning composition and water. The ultrasonic cleaner was also able to use a tray large enough to accommodate the cleaning layer. The wash layer volume is 250 mL. The test was conducted at a frequency of 40 kHz and an output of 15 W.

Disintegration evaluation Pour 150 mL of water (purified water) at 25°C into the cleaning layer of an ultrasonic cleaner, then add the solid cleaning composition 1 (one tablet) obtained as described above, and quickly perform an ultrasonic cleaning. Ultrasonic treatment was performed using a sonic cleaner. The time from the start of ultrasonic treatment to the time when the shape of the tablet collapsed was measured, and this was taken as the disintegration time. The tablet injection and the start of sonication were carried out at the same time. This is referred to as Example 1 (n=3). Comparative Example 1 was obtained by measuring the disintegration time in the same manner except that the ultrasonic treatment was not performed. Solid cleaning compositions 2 to 5 and Reference Example 1 were similarly measured for disintegration time and designated as Examples 2 to 5, Comparative Examples 2 to 5, Reference Example 1A and Reference Example 1B (n=3). In Comparative Examples 1 to 5 and Reference Example 1B, measurement was performed from the time the tablet was added until the time the tablet lost its shape.

In this evaluation, the "time at which the tablet loses its shape" is the time when the tablet in the form shown in Figs. "The time until the time when the 2 to 4 are views of one tablet obtained in this test example as viewed from three directions.

Separately, one tablet prepared as described above was added to 150 mL of water (purified water) at 25° C. to completely dissolve the tablet, and the pH was measured. A pH meter Model No. F-53 (manufactured by Horiba, Ltd.) was used for the measurement.

Results The results are shown in Table 1.

Reference Example 1B in Table 1 shows the results of tablets containing an oxygen-based bleaching agent and having a pH of 6.4 when dissolved in water without ultrasonic treatment. In this case, rapid disintegration was observed even though ultrasonic treatment was not performed, specifically, the tablet disintegrated in 60 seconds. Moreover, even when the same tablet was subjected to ultrasonic treatment, the tablet disintegrated in 60 seconds. From this, it was found that the tablet containing an oxygen-based bleaching agent and having a pH of 6.4 when dissolved in water rapidly disintegrates regardless of the presence or absence of ultrasonic treatment.

On the other hand, as can be understood from Comparative Examples 1 to 5 in Table 1, in the case of tablets containing an oxygen bleach and having a pH of 7.5 or higher when dissolved in water, when ultrasonic treatment is not performed, at least 8 A disintegration time of 48 minutes or more was required in Comparative Example 5.

On the other hand, in Examples 1 to 5 in which ultrasonic treatment was performed in Comparative Examples 1 to 5, the disintegration time was 2 to 4 minutes, and the disintegration time could be significantly shortened.

From this, it can be concluded that the disintegration time is remarkably shortened by ultrasonically treating a solid cleaning composition containing an oxygen-based bleaching agent and having a neutral or higher pH when dissolved in water. I found out. It was also found that such shortening of the disintegration time facilitates the diffusion of the cleansing components derived from the solid cleansing composition into water in a short time, thus enabling the dentures to be cleansed more simply and efficiently.

Claims (3)

A cleaning set comprising the following solid cleaning composition and an ultrasonic cleaner :
The solid cleaning composition contains an oxygen-based bleaching agent, at least one selected from the group consisting of carbonates, hydrogencarbonates and double salts thereof, and an acid, and dissolves in water. A solid cleaning composition having a pH of 7 to 12,
The oxygen-based bleaching agent is at least one selected from the group consisting of hydrogen persulfate, perborate, percarbonate and persulfate,
The acid is citric acid, malic acid, tartaric acid, fumaric acid, maleic acid, gluconic acid, succinic acid, salicylic acid, adipic acid, oxalic acid, phosphoric acid, sulfamic acid, alkali metal salts thereof and alkaline earth metals thereof. At least one selected from the group consisting of salts,
The output of the ultrasonic cleaner is 10-20W . 2. The cleaning set according to claim 1 , which is for cleaning oral linings. A cleaning method characterized by combining the following solid cleaning composition with an ultrasonic cleaner :
The solid cleaning composition contains an oxygen-based bleaching agent, at least one selected from the group consisting of carbonates, hydrogencarbonates and double salts thereof, and an acid, and dissolves in water. A solid cleaning composition having a pH of 7 to 12,
The oxygen-based bleaching agent is at least one selected from the group consisting of hydrogen persulfate, perborate, percarbonate and persulfate,
The acid is citric acid, malic acid, tartaric acid, fumaric acid, maleic acid, gluconic acid, succinic acid, salicylic acid, adipic acid, oxalic acid, phosphoric acid, sulfamic acid, alkali metal salts thereof and alkaline earth metals thereof. At least one selected from the group consisting of salts,
The output of the ultrasonic cleaner is 10-20W .

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