JP6820166B2 - Effervescent solid cleaning agent - Google Patents

Description

The present invention relates to an effervescent solid cleaning agent. More specifically, the present invention relates to an effervescent solid cleaning agent that can be efficiently produced and has high hardness.

Conventionally, a foaming cleaning agent containing a foaming agent can exert an excellent cleaning effect by the interaction between the chemical cleaning power of the surfactant and the physical cleaning power of the foaming action. Therefore, artificial teeth, glasses, drain pipes, etc. Widely used for cleaning sinks, washing tubs, toilets, bathtubs, stainless steel bottles, etc. In addition, effervescent cleaning agents are provided by being formulated into various solid forms such as tablets and granules. Among these forms, tablets are easy to handle and are widely accepted by consumers. ing.

In general, a foaming cleaning agent contains components such as a bleaching agent, a surfactant, a bactericidal agent, a fragrance, and a deodorant, depending on the purpose of use, the cleaning action to be provided, and the like. Further, since it is necessary to add a relatively large amount of foaming agent to the foaming cleaning agent in order to ensure foamability, the foaming cleaning agent has a compositional feature that the proportion of the foaming agent is high. ..

On the other hand, effervescent solid cleaning agents such as tablets and granules are required to have high hardness in order to prevent cracking and chipping during packaging and transportation. Further, in the case of tablet-shaped or granular effervescent solid-state cleaning agents, in order to increase productivity, the raw material mixture used for tableting or granulation must have fluidity (that is, molding such as tableting or granulation). It is also important to have characteristics that make it easy to do. However, as described above, the effervescent solid cleaning agent has a compositional feature that the proportion of the effervescent agent is large. Therefore, when it is formulated into a solid such as tablets and granules, it is a solid after molding. There is a drawback that it is difficult to make (tablets and granules) have sufficient hardness.

Conventionally, various techniques for producing a foaming solid cleaning agent have been reported. For example, in Patent Document 1, an organic acid that does not substantially contain water or does not release crystalline water at 50 ° C. or lower and polyethylene glycol are heated, melted and mixed at 60 to 100 ° C., and then stirred under predetermined conditions. While cooling and powdering, by adding sodium bicarbonate and sodium carbonate to tableting, the amount of stabilizers, binders, mold release agents, etc. is reduced, and the product is tablet-like with good productivity. It has been reported that effervescent cleaning agents can be obtained. However, Patent Document 1 does not disclose a formulation technique for providing a foaming solid cleaning agent with sufficient hardness.

Japanese Unexamined Patent Publication No. 62-89616

An object of the present invention is to provide an effervescent solid cleaning agent which can be efficiently produced and has high hardness.

The present inventor measured the hardness of the foamable solid cleaning agent by blending various binders in order to provide the foaming solid cleaning agent with high hardness, and found that the hardness could be improved, but the hardness could be improved. Since the fluidity of the raw material mixture used in the molding step is lowered and the production efficiency is lowered, the above-mentioned problems cannot be solved by the components conventionally used as a binder.

Therefore, as a result of further diligent studies, the present inventor found that when a bleaching agent, which has not been used as a binder in the past, and magnesium silicate are blended in combination, the fluidity of the raw material mixture used in the molding process is excellent. It has been found that in addition to being able to easily mold tablets and granules, the obtained foamable solid cleaning agent can be provided with high hardness. The present invention has been completed by further studies based on such findings.

That is, the present invention provides the inventions of the following aspects.
Item 1. An effervescent solid cleaning agent containing a bleaching agent and magnesium silicate.
Item 2. Item 2. The foaming solid cleaning agent according to Item 1, wherein the content of magnesium silicate is 0.5 to 10% by weight.
Item 3. Item 2. The effervescent solid cleaning agent according to Item 1 or 2, wherein the content of the bleaching agent is 4 to 22% by weight.
Item 4. Item 2. The effervescent solid cleaning agent according to any one of Items 1 to 3, wherein the bleaching agent is an oxygen-based bleaching agent.
Item 5. Item 2. The effervescent solid cleaning agent according to any one of Items 1 to 4, which is in the form of tablets or granules.
Item 6. Item 2. The effervescent solid cleaning agent according to any one of Items 1 to 5, further comprising a surfactant.
Item 7. Item 2. The effervescent solid cleaning agent according to any one of Items 1 to 6, which is used for cleaning dentures.
Item 8. Use of bleach and effervescent solids containing magnesium silicate as a cleaning agent.
Item 9. A cleaning method for cleaning an object to be cleaned with a bleaching agent and an effervescent solid cleaning agent containing magnesium silicate.

The foamable solid cleaning agent of the present invention has excellent fluidity of the raw material mixture before the molding process such as tableting and granulation, and the molding process can be performed efficiently, so that high productivity is realized. be able to. Further, since the foamable solid cleaning agent of the present invention can have high hardness, it is possible to suppress cracking and chipping during packaging, transportation, use (carrying) and the like.

The effervescent solid cleaning agent of the present invention is characterized by containing a bleaching agent and magnesium silicate. Hereinafter, the effervescent solid cleaning agent of the present invention will be described in detail.

[Blowing agent]
The foaming solid cleaning agent of the present invention contains a foaming agent in order to provide foamability when coexisting with water. Since the foaming agent has hygroscopicity, in the prior art, it has contributed to insufficient hardness of the foaming solid cleaning agent, but the foaming solid cleaning agent of the present invention can be used. The fluidity of the raw material mixture before the molding process such as tablets and granulation is excellent, and it is possible to improve the hardness of the tablets.

The type of foaming agent used in the present invention is not particularly limited as long as it is non-toxic and physiologically acceptable, and is normally used as a cleaning agent (that is, one capable of generating carbon dioxide in water). ) Can be widely used.

Examples of the effervescent agent include a combination of at least one carbonate, a hydrogen carbonate, and a double salt of a hydrogen carbonate and a carbonate (hereinafter, may be referred to as a carbonate compound) and an acid. The carbonate is not particularly limited, and examples thereof include alkali metal salts of carbonic acid such as sodium carbonate and potassium carbonate. The hydrogen carbonate is not particularly limited, and examples thereof include alkali metal salts of hydrogen carbonate such as sodium hydrogen carbonate and potassium hydrogen carbonate. The double salt of carbonate and hydrogen carbonate is not particularly limited, and examples thereof include sodium sesquicarbonate and the like. These carbonic acid compounds may be used alone or in combination of two or more. The acid is not particularly limited, and examples thereof include organic acids such as citric acid, tartaric acid, fumaric acid, malic acid, maleic acid, gluconic acid, and succinic acid; and inorganic acids such as phosphoric acid and sulfamic acid. .. These acids may be used alone or in combination of two or more.

Examples of the carbonic acid compound constituting the foaming agent include an alkali metal salt of hydrogen carbonate, and more preferably sodium hydrogen carbonate. Further, as the acid constituting the foaming agent, an organic acid is preferably mentioned.

In the foaming agent, the ratio of the carbonic acid compound and the acid is not particularly limited as long as both can react in water to generate carbon dioxide. For example, the acid is usually 50 to 100 parts by weight per 100 parts by weight of the carbonic acid compound. , Preferably 50 to 90 parts by weight, and more preferably 50 to 85 parts by weight.

The content of the foaming agent (total amount of the carbonic acid compound and the acid) in the foaming solid cleaning agent of the present invention may be appropriately set according to the degree of foaming action to be imparted, and is, for example, 40 to 95 weight. %, Preferably 50 to 80% by weight, and more preferably 50 to 75% by weight.

[bleach]
The effervescent solid cleaning agent of the present invention includes a bleaching agent. The effervescent solid cleaning agent contains magnesium silicate, which will be described later, together with the bleaching agent, so that the raw material mixture used in the molding process has excellent fluidity, and the effervescent solid cleaning agent has high hardness. It becomes possible to make it.

The type of bleach used in the present invention is not particularly limited as long as it is non-toxic and physiologically acceptable, and those usually used as cleaning agents can be widely used. For example, oxygen. Examples include bleaching agents, chlorine bleaching agents, reducing bleaching agents and the like.

Examples of the oxygen-based bleach include hydrogen persulfate, persulfate, percarbonate, perborate, tetraacetylethylenediamine and the like.

Specific examples of the hydrogen persulfate include alkali metal salts such as lithium salt, sodium salt and potassium salt; alkali metal salts such as barium salt; ammonium salts; and hydrates thereof.

The hydrogen persulfate may be a hydrogen sulfate or a double salt with a sulfate. When it is a double salt, for example, it is particularly preferable that it is a double salt of potassium hydrogen persulfate, potassium hydrogen sulfate and potassium sulfate. Examples of commercially available products of potassium hydrogen persulfate, potassium hydrogen sulfate and potassium sulfate compound salts include Oxone manufactured by DuPont.

Specific examples of the persulfate include alkali metal salts such as sodium salt and potassium salt; ammonium salts; and hydrates thereof.

Specific examples of the percarbonate include alkali metal salts such as sodium salt and potassium salt; ammonium salts; and hydrates thereof.

Specific examples of the perboric acid include alkali metal salts such as sodium salt and potassium salt; ammonium salts; and hydrates thereof.

These oxygen-based bleaches may be used alone or in combination of two or more.

Examples of the chlorine bleaching agent include hypochlorite and dichloroisocyanurate.

Specific examples of the hypochlorite include alkali metal salts such as sodium salt and potassium salt.

Specific examples of the dichloroisocyanurate include alkali metal salts such as sodium salt and potassium salt.

These chlorine bleaches may be used alone or in combination of two or more.

Specific examples of the reducing bleach include thiourea dioxide and hydrosulfite. These reducing bleaches may be used alone or in combination of two or more.

These bleaches may be used alone or in combination of two or more.

Among these bleaching agents, an oxygen-based bleaching agent is preferable, and an alkali metal salt of persulfuric acid is more preferable, from the viewpoint of improving the fluidity of the raw material mixture before tableting and the hardness of the tablet more effectively. Alkali metal salts of hydrogen sulfate, alkali metal salts of perboric acid, and tetraacetylethylenediamine can be mentioned. In particular, it is desirable that the bleaching agent contains at least one of perborate or hydrogen persulfate, and in particular, hydrogen persulfate alone, perborate alone, or hydrogen persulfate, perboric acid. A combination of salt and tetraacetylethylenediamine is desirable.

When hydrogen persulfate, perborate, and tetraacetylethylenediamine are used in combination as the bleaching agent, the ratio thereof is not particularly limited, but for example, perborate per 100 parts by weight of hydrogen persulfate. 10 to 230 parts by weight of salt, preferably 30 to 150 parts by weight, more preferably 50 to 100 parts by weight; 4 to 80 parts by weight of tetraacetylethylenediamine, preferably 10 to 60 parts by weight, still more preferably 15 to 30 parts by weight. The department is mentioned.

The content of the bleaching agent in the foaming solid cleaning agent of the present invention is not particularly limited, and examples thereof include 4 to 22% by weight, preferably 4 to 18% by weight, and more preferably 4 to 15% by weight.

[Magnesium silicate]
The effervescent solid cleaning agent of the present invention contains magnesium silicate. In the foaming solid cleaning agent of the present invention, magnesium silicate plays a role of improving the fluidity of the raw material mixture before tableting and increasing the hardness of the foaming solid cleaning agent by coexisting with the bleaching agent.

The bulk density of magnesium silicate used in the present invention is not particularly limited and may be light or heavy. From the viewpoint of more effectively improving the fluidity of the raw material mixture before tableting and the hardness of the tablet, a light type magnesium silicate is preferable. Here, the light type magnesium silicate refers to those having a loosening density of less than 0.35 g / ml. Here, the "looseness density" is a value measured according to the measurement method described in the column of Examples.

Further, the magnesium silicate used in the present invention may be either an anhydride or a hydrate.

The content of magnesium silicate in the effervescent solid cleaning agent of the present invention is, for example, 0.5 to 10% by weight, preferably 0.5 to 8% by weight, and more preferably 0.5 to 5% by weight. Be done.

The ratio of the bleach to magnesium silicate in the effervescent solid cleaning agent of the present invention is determined according to the content of each of the above-mentioned components, but more effectively, the flow of the raw material mixture before tableting. From the viewpoint of improving the properties and hardness of the tablet, magnesium silicate is 2 to 250 parts by weight, preferably 2.5 to 200 parts by weight, and more preferably 3 to 130 parts by weight per 100 parts by weight of the bleaching agent. ..

[Surfactant]
The foaming solid cleaning agent of the present invention preferably contains a surfactant in order to enhance the detergency.

The type of surfactant to be blended in the foaming solid cleaning agent of the present invention is not particularly limited as long as it can be used as a component of the cleaning agent, and is cationic, anionic, or nonionic. And any amphoteric surfactant may be used.

Specific examples of the cationic surfactant include quaternary ammonium salts such as alkyl (C6 to C20) trimethylammonium salt, dialkyl (C6 to C20) dimethylammonium salt, and alkyl (C6 to C20) dimethylbenzylammonium salt. Examples thereof include salts, alkyl (C6 to C20) amine salts, alkyl (C6 to C20) amine ethylene oxide adducts, and alkyl pyridinium salts. These cationic surfactants may be used alone or in combination of two or more.

Specific examples of the anionic surfactant include a linear alkylbenzene sulfonate having an alkyl group having an average carbon number of 10 to 16, an alkenyl sulfonate having an average of 10 to 20 carbon atoms in one molecule, and an average. Examples include linear alkyl sulfoacetate having an alkyl group having 10 to 20 carbon atoms, alkyl sulfate having an average of 10 to 20 alkyl groups, and alkane sulfonate having an average of 10 to 20 carbon atoms in one molecule. Be done. These anionic surfactants may be used alone or in combination of two or more.

Specific examples of the nonionic surfactant include higher alcohol ethylene oxide adduct, alkylphenol ethylene oxide adduct, fatty acid ethylene oxide adduct, polyhydric alcohol fatty acid ester ethylene oxide adduct, and higher alkylamine ethylene oxide adduct. , Fatty acid amide ethylene oxide adduct, polyethylene glycol type surfactants such as fat and oil ethylene oxide adduct and polypropylene glycol ethylene oxide adduct, and fatty acid ester of glycerol, fatty acid ester of pentaerythritol, fatty acid ester of sorbitol and sorbitan, SHO Examples thereof include polyhydric alcohol-type surfactants such as fatty acid esters of sugars, alkyl ethers of polyhydric alcohols, and fatty acid amides of alkanolamines. These nonionic surfactants may be used alone or in combination of two or more.

Specific examples of the amphoteric tenside include an amino acid-type surfactant such as an alkylaminopropionate having an alkyl group having an average carbon number of 10 to 16 (for example, sodium laurylaminopropionate) and an average carbon number of 10 to 16. Examples thereof include alkyldimethylbetaines having an alkyl group (lauryldimethylbetaine, stearyldimethylbetaine, etc.), betaine-type surfactants such as laurylhydroxyethyl betaine, and the like. These amphoteric surfactants may be used alone or in combination of two or more.

In the various surfactants, examples of the salt form 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. Can be mentioned.

Among these surfactants, anionic surfactants are preferable. These surfactants may be used alone or in combination of two or more.

When a surfactant is contained in the foaming solid cleaning agent of the present invention, the content thereof may be appropriately set according to the type of the surfactant to be used, the detergency to be provided, and the like. .1 to 10% by weight, preferably 0.5 to 5% by weight, more preferably 1 to 3% by weight.

[Other ingredients]
In addition to the above-mentioned components, the effervescent solid cleaning agent of the present invention contains, if necessary, other additives for the purpose of enhancing detergency, imparting disintegration property, imparting moldability, and the like. You may be.

Other additives that can be incorporated into the effervescent solid cleaning agent of the present invention include rust preventives, chelating agents, pH adjusters, enzymes, colorants, fragrances, effervescent stabilizers, preservatives, antibacterial / bactericidal agents. , Preservatives, lubricants, binders, lubricants, bulking agents, excipients, disintegrants and the like.

[Dosage form / physical characteristics]
The dosage form of the effervescent solid cleaning agent of the present invention is not particularly limited as long as it is solid, and examples thereof include tablets and granules. In particular, the tablet-shaped effervescent solid cleaning agent is a dosage form that is liable to crack or chip during packaging, transportation, use (carrying), etc., and is desired to have high hardness. Based on this, a tablet form can be mentioned as a preferable example of the dosage form of the effervescent solid cleaning agent of the present invention.

When the effervescent solid cleaning agent of the present invention is formed into tablets, the shape and size thereof may be appropriately set according to the object to be cleaned. For example, when the effervescent solid cleaning agent of the present invention is a tablet-shaped denture cleaning agent, the weight per tablet is, for example, 1 to 4 g, preferably 2 to 3 g.

The foamable solid cleaning agent of the present invention has a high hardness and has a property of suppressing cracking and chipping during packaging and transportation. When the effervescent solid cleaning agent of the present invention is in the form of tablets, the hardness thereof is specifically 50 N or more, preferably 55 to 80 N, and more preferably 60 to 80 N. In the present invention, the specific conditions of the method for measuring the hardness of the denture cleaning agent are as shown in the column of Examples.

[Cleaning target / usage]
The cleaning target of the foaming solid cleaning agent of the present invention is not particularly limited, and examples thereof include artificial teeth, glasses, drain pipes, sinks, washing tubs, bathtubs, toilets, and stainless steel bottles. Among these cleaning targets, dentures are preferable.

The method of using the foaming solid cleaning agent of the present invention is the same as that of the conventional foaming solid cleaning agent. For example, when dentures and eyeglasses are to be cleaned, the cleaning target may be immersed in water containing the foaming solid cleaning agent of the present invention. If the drain pipe, sink, washing tub, bathtub, toilet, stainless steel bottle, etc. are to be cleaned, the foaming solid cleaning agent of the present invention is added to the cleaning target, and the cleaning target is treated with the foaming solid cleaning agent of the present invention. It may run or store water.

[Production method]
The foaming solid cleaning agent of the present invention may be carried out according to a known method. For example, the effervescent solid of the present invention can be obtained by subjecting a raw material mixture containing a foaming agent, a bleaching agent, magnesium silicate, and other components added as necessary to a molding process such as tableting or granulation. A shape cleaning agent can be produced.

The effervescent solid cleaning agent of the present invention has good fluidity of the raw material mixture used in the molding process and is easy to tablet and granulate, so that tablets and granules having high hardness can be efficiently produced.

An example of the physical properties showing the fluidity of the raw material mixture to be used in the molding step is an angle of repose of 45 ° or less, preferably 30 to 45 °. The angle of repose refers to the angle of the peak of the powder layer formed in a state where the sample is naturally dropped by the injection method, and the smaller the angle of repose, the higher the fluidity.

Further, as another example of the physical properties showing the fluidity of the raw material mixture used in the molding step, specifically, the degree of compression is 25% or less, preferably 10 to 20%, and more preferably 10 to 15%. The degree of compression is the ratio of loosening bulk density to firming bulk density [100 x (hardening bulk density-loose bulk density) / compacting bulk density], and the smaller it is, the higher the fluidity is.

The angle of repose and the degree of compression are values measured by using a powder property evaluation device (powder tester) after sieving the raw material mixture before being subjected to the molding step with an opening of 850 μm, and the specific values thereof. The conditions are as shown in the column of Examples.

When the effervescent solid cleaning agent of the present invention is made into a tablet, the method of tableting is not particularly limited, but for example, an apparatus such as a single-shot tablet machine, a rotary tablet machine, or a high-speed rotary tablet machine is used. Can be done. The pressing force during tablet molding is not particularly limited as long as tablet molding is possible, but is usually set to about 4 to 10 tons, preferably about 5 to 9 tons, and more preferably about 6 to 8 tons. Good.

When the foaming solid cleaning agent of the present invention is granulated, the method of granulation is not particularly limited, and for example, any of extruded granulation, wet granulation, dry granulation, fluidized bed granulation and the like. You may do it by the method.

Hereinafter, the present invention will be specifically described with reference to Examples, but the present invention is not limited to these Examples.

The trade names, compositions, sources, etc. of the main ingredients used in the following examples, comparative examples, and prescription examples are as follows.
Potassium sulphate, potassium bisulfate, and potassium hydrogen persulfate mixture : trade name "Oxoon" (manufactured by DuPont Co., Ltd.); potassium sulfate 32% by weight, potassium hydrogen sulfate 23% by weight, potassium hydrogen persulfate 43% by weight, and carbon dioxide Contains 2% by weight of magnesium.
Mixture of sodium lauryl sulfoacetate, sodium sulfate and NaCl : trade name "LATHANOL LAL POWDER" (manufactured by Stepan)
Mixture of alkenyl sulfonate and hydroxyl group-containing alkyl sulfonate : Trade name "ASCO 90" (manufactured by Aekyung Specialty Chemicals) was used.

Test Example 1
1. 1. Production of Effervescent Solid Cleaning Agent (Tablet-shaped Denture Cleaning Agent) An effervescent solid cleaning agent (denture cleaning agent) having the composition shown in Table 1 was produced. Specifically, first, a raw material other than sodium carbonate (part) and sodium carbonate and a silicic acid compound (magnesium silicate, magnesium aluminate metasilicate, aluminum silicate) is weighed, and the weighed raw material is used as a ladyge mixer. (Model number: M20, manufacturer: Matsubo) was stirred and mixed. Next, the mixed raw materials are subdivided into zipper bags, a predetermined amount of silicic acid compound and sodium carbonate (amount corresponding to 2% by weight) are added and mixed, and the mixture is sieved at an opening of 850 μm to obtain a raw material mixture. It was. The obtained raw material mixture was tablet-molded at 6.5 tons using a mold having a diameter of 25 mm to produce 2.65 g of an effervescent solid cleaning agent (tablet-shaped denture cleaning agent). ..

2. 2. Evaluation of Tablet Hardness The hardness of 3 effervescent solid cleaning agents was measured with a hardness tester (tablet hardness tester 6D: manufactured by DR.SCHLEUNIGER PHARMATRON), and the average value was calculated. The relative value of the hardness of each foaming solid cleaning agent was calculated with the hardness of the foaming solid cleaning agent of Comparative Example 1 as 100, and the hardness of the tablets was classified according to the following criteria.
It was classified according to the following criteria.
<Criteria for determining hardness>
⊚: Relative hardness value is 130 or more ○: Relative hardness value is 115 or more and less than 130 Δ: Relative hardness value is 100 or more and less than 115 ×: Relative hardness value is less than 100 × ×: Harding failure occurs and hardness Could not be measured.

3. 3. Measurement of fluidity of raw material mixture In order to evaluate the fluidity of the raw material mixture before tableting, a powder property evaluation device (powder tester, model number: PT-X, manufactured by Hosokawa Micron) was used to perform the angle of repose and the degree of compression. Was measured. The specific measurement conditions are as shown below.

(Measuring conditions for angle of repose)
The raw material mixture was vibrated through a sieve having an opening of 850 μm and dropped to the extent that powder fell from the saucer. Next, an image was projected on the pile of the raw material mixture formed on the saucer with a CCD camera, and the angle (angle of repose) between the bottom surface and the slope was measured.

(Measurement condition of compression degree)
While passing the raw material mixture through a sieve with an opening of 850 μm by vibration, fill the 100 mL container to the extent that the powder falls, and then scrape off the excess raw material mixture overflowing from the 100 mL container. The weight was measured, and the density in this state was calculated as the loosening density (g / mL). Next, the cylinder was connected onto a 100 mL container filled with the raw material mixture to form a connecting container. Then, the raw material mixture was further filled with a sieve having an opening of 850 μm by vibration to the extent that the powder fell from the connecting container, and then tapping was performed 180 times. The connected cylinder was removed from the connecting container, the excess raw material mixture overflowing from the 100 mL container was scraped off, the weight was measured, and the density in this state was calculated as the firmness density (g / mL). .. The degree of compression was calculated from the obtained values of loose bulk density and firm bulk density according to the following formula.

From the measured angles of repose and degree of compression, the fluidity of the raw material mixture was classified according to the following criteria.
<Criteria for liquidity>
⊚: Angle of repose is 45 ° or less and compression degree is 15% or less ○: Angle of repose is 45 ° or less and degree of compression is more than 15% and 20% or less Δ: Angle of repose is 45 ° or less and degree of compression is 20% Super 25% or less ×: Angle of repose is over 45 ° and compression is over 25%

4. Results The results obtained are shown in Table 1. In Examples 1 to 4 containing the bleach and magnesium silicate, both the hardness of the tablets and the fluidity of the raw material mixture were excellent. In particular, it is noteworthy that in Examples 1 to 4, despite the extremely high content of the foaming agent of 60% by weight or more, excellent hardness and fluidity of the raw material mixture could be provided. It can be said that this is an effect that should be done. On the other hand, in Comparative Examples 2 to 5 containing magnesium aluminate aluminate or aluminum silicate instead of magnesium silicate, none of them was satisfactory in terms of both excellent hardness and fluidity of the raw material mixture. The hardness of the foaming solid cleaning agent of Example 1 is 55N or more, and the hardness of the foaming solid cleaning agent of Examples 2 to 4 is 60N or more, which is sufficient hardness to withstand packaging and distribution. Had.

Test Example 2
1. 1. Production of Effervescent Solid Cleaning Agent (Tablet-shaped Denture Cleaning Agent) An effervescent solid-state cleaning agent (tablet-shaped denture cleaning agent) having the composition shown in Table 2 was produced. Specifically, first, citric acid, malic acid, sodium hydrogen carbonate, bleach, polyethylene glycol, fragrance, and silicon dioxide were weighed and then stirred and mixed with a Ladyge mixer (model number: M20, manufacturer: Matsubo). .. Next, the mixed raw materials were subdivided into zipper bags, other raw materials were added in a predetermined amount, mixed, and sieved at an opening of 850 μm to obtain a raw material mixture. The obtained raw material mixture was tablet-molded at 6.5 tons using a mold having a diameter of 25 mm to produce 2.65 g of an effervescent solid cleaning agent (tablet-shaped denture cleaning agent). ..

2. 2. Evaluation of Tablet Hardness The hardness of 3 effervescent solid cleaning agents was measured with a hardness tester (tablet hardness tester 6D: manufactured by DR.SCHLEUNIGER PHARMATRON), and the average value was calculated. With the hardness of the foamable solid cleaning agent of Comparative Example 6 as 100, the relative value of the hardness of each foaming solid cleaning agent was calculated, and the foaming solid cleaning agent was prepared in the same manner as in Test Example 1. The hardness was classified.

3. 3. Measurement of Fluidity of Raw Material Mixture The angle of repose and the degree of compression were measured by the same method as in Test Example 1, and the fluidity of the raw material mixture was classified.

4. Results The results obtained are shown in Table 2. From this result, it was confirmed that in Examples 5 to 8 containing the bleaching agent and magnesium silicate, both the hardness of the foaming solid cleaning agent and the fluidity of the raw material mixture were excellent.

Production Example A foaming solid cleaning agent (tablet-shaped denture cleaning agent) having the composition shown in Table 3 was produced. Specifically, each component shown in Table 3 was weighed in a predetermined amount, mixed, and sieved with an opening of 850 μm to obtain a raw material mixture. Next, the raw material mixture was tablet-molded to produce 2.65 g of an effervescent solid cleaning agent (tablet-shaped denture cleaning agent). All of the obtained foaming solid cleaning agents had high hardness, and the fluidity of the raw material mixture used in the production thereof was also good.

Claims (7)

It contains 0.5 to 10% by weight of magnesium silicate, a bleaching agent containing a carbonic acid compound and an acid, a bleaching agent selected from the group consisting of an oxygen-based bleaching agent and a chlorine-based bleaching agent, and is in the form of tablets. A foaming solid bleaching agent. The effervescent solid cleaning agent according to claim 1, wherein the content of the bleaching agent is 4 to 22% by weight. The effervescent solid cleaning agent according to claim 1 or 2 , wherein the bleaching agent is an oxygen-based bleaching agent. The effervescent solid cleaning agent according to any one of claims 1 to 3 , further comprising a surfactant. The effervescent solid cleaning agent according to any one of claims 1 to 4 , which is used for cleaning dentures. A tablet-like foam containing 0.5 to 10% by weight of magnesium silicate, a bleach selected from the group consisting of a foaming agent containing a carbonic acid compound and an acid, an oxygen-based bleaching agent and a chlorine-based bleaching agent. Use of sex solids as a cleaning agent. Foaming agent containing a carbonic acid compound and an acid, a bleaching agent selected from the group consisting of an oxygen-based bleaching agent and a chlorine-based bleaching agent, and 0.5 to 10% by weight of magnesium silicate, which is in the form of a tablet. A cleaning method for cleaning an object to be cleaned with a solid-state cleaning agent.