Tablet for oral care

Abstract

To provide a tablet for oral care with improved storage stability.SOLUTION: A tablet for oral care according to the present invention includes a foamer and a binder, where the foamer includes one coated with a coating agent.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to oral care tablets containing an effervescent agent. [Background technology]

[0002] Dentifrices have been used in the past to prevent bad breath, tooth decay, periodontal disease, etc. Dentifrice pastes are generally and widely used as dentifrices.

[0003] A foaming agent may be added to toothpaste to improve the cleaning effect. As such a toothpaste, the following Patent Document 1 discloses an oral composition containing a non-aqueous oral composition base, baking soda (carbonate), and an organic acid.

[0004] Furthermore, the following Patent Document 2 discloses a foaming dentifrice containing (A) a first composition containing 15-40% by mass of a bicarbonate and / or sesquicarbonate, and (B) a second composition containing 1-20% by mass of an organic acid. The foaming dentifrice is foamed by contacting the first composition with the second composition during use, and is therefore filled and stored in a special container with a partition to prevent the two from coming into contact with each other during storage. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2002-302429 A [Patent Document 2] JP 2016-113428 A Summary of the Invention [Problem to be solved by the invention]

[0006] However, when a dentifrice such as that in Patent Document 1 is stored for a long period of time, the organic acid and carbonate may dissolve in the trace amount of moisture in the raw materials of the dentifrice and react to generate carbon dioxide gas. In other words, when a conventional dentifrice such as that in Patent Document 1 is filled into a sealed container such as a tube and stored for a long period of time, the sealed container may expand (puff) due to the carbon dioxide gas.

[0007] Furthermore, toothpastes such as those disclosed in Patent Document 2 require special tubes, which increases manufacturing costs.

[0008] Furthermore, in recent years, the demand for easy oral care on the go has increased, and oral care tablets have been developed. In solid dentifrices, the foaming agent in the dentifrices reacts more easily with water than in paste dentifrices. Therefore, when a conventional paste dentifrice containing a foaming agent is solidified, the foaming agent reacts during storage to generate gas, causing the package to expand (puff) and burst. In addition, when puffing occurs, the foaming agent is partially decomposed, resulting in insufficient foaming during use. As a result, sufficient cleaning effect and sensory or visual satisfaction may not be obtained. In conventional oral care tablets, it is difficult to improve storage stability when a foaming agent is included.

[0009] An object of the present invention is to provide an oral care tablet having improved storage stability. [Means for solving the problem]

[0010] According to a broad aspect of the invention there is provided an oral care tablet comprising an effervescent agent and a binder, the effervescent agent being coated with a coating agent.

[0011] In a particular aspect of the oral care tablet of the present invention, the effervescent agent comprises sodium bicarbonate.

[0012] In a particular aspect of the oral care tablet of the present invention, the effervescent agent coated with the coating agent comprises citric acid coated with calcium citrate or citric acid coated with a triglyceride.

[0013] In a specific aspect of the oral care tablet of the present invention, the content of the effervescent agent coated with the coating agent is 10% by weight or more and 60% by weight or less, based on 100% by weight of the effervescent agent.

[0014] In a specific aspect of the oral care tablet of the present invention, the effervescent agent coated with the coating agent contains citric acid coated with calcium citrate, and the content of citric acid coated with calcium citrate in 100% by weight of the effervescent agent is 10% by weight or more and 60% by weight or less.

[0015] In a specific aspect of the oral care tablet according to the present invention, the weight ratio of the content of the effervescent agent to the content of the binder is 1.0 or more and 10.0 or less.

[0016] In a specific aspect of the oral care tablet according to the present invention, the weight ratio of the content of the effervescent agent coated with the coating agent to the content of the binder is 0.2 or more and 4.0 or less.

[0017] In certain aspects of the oral care tablet according to the present invention, the oral care tablet includes a cleaning agent.

[0018] In certain aspects of the oral care tablet according to the present invention, the oral care tablet comprises an abrasive.

[0019] In certain aspects of the oral care tablet according to the present invention, the oral care tablet is a dentifrice or a mouthwash. Effect of the Invention

[0020] The oral care tablet according to the present invention includes an effervescent agent and a binder, and the effervescent agent is coated with a coating agent. Since the oral care tablet according to the present invention has the above-mentioned configuration, it can have high storage stability. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] The present invention will be described in detail below.

[0022] (Oral care tablets) The oral care tablet according to the present invention includes an effervescent agent and a binder. In the oral care tablet according to the present invention, the effervescent agent includes an effervescent agent coated with a coating agent. The oral care tablet according to the present invention is a tablet used for oral care. The oral care tablet according to the present invention is a preparation for caring for the oral cavity.

[0023] In general, in a tablet made by simply solidifying a conventional toothpaste containing a foaming agent, the foaming agent reacts during storage to generate gas, which may cause the package to expand (puff) and burst. In addition, when puffing occurs, a part of the foaming agent is decomposed, resulting in insufficient foaming during use. As a result, sufficient cleaning effect and sensory or visual satisfaction may not be obtained. In addition, when a toothpaste contains a deliquescent component or a hygroscopic component, there is a problem that tableting problems such as the component sticking to a mold during tableting are likely to occur. Furthermore, when a toothpaste contains a deliquescent component or a hygroscopic component, the tablet may dissolve and resolidify during storage, becoming too hard to be chewed, or the grain size of the crystals may increase during storage, causing the tablet to collapse from the inside and return to powder. In other words, it is difficult to improve the storage stability of conventional oral care tablets.

[0024] As a result of extensive investigations, the present inventors have found that the above problems can be solved by using a foaming agent coated with a coating agent.

[0025] The oral care tablet according to the present invention can have improved storage stability, and as a result, even if the oral care tablet is stored for a long period of time, puffing of the package can be suppressed, and the oral care tablet can have excellent foaming during use, sufficient cleaning effect, and sensory or visual satisfaction.

[0026] In addition, since the oral care tablet according to the present invention is in tablet form (solid), it is compact and lightweight, and therefore has excellent portability. In addition, since the oral care tablet according to the present invention is in tablet form (solid), it is easy to take a fixed amount and is hygienic.

[0027] The oral care tablet according to the present invention is used for oral care. Specifically, the oral care tablet is preferably used for brushing teeth or rinsing the mouth. The oral care tablet is preferably used as a dentifrice or a mouthwash. The oral care tablet is preferably a dentifrice or a mouthwash. When the oral care tablet is a dentifrice, the oral care tablet exhibits effects such as removing plaque, removing dirt on teeth, preventing tartar deposition, cleaning the oral cavity, preventing bad breath, preventing tooth decay, and whitening the teeth. When the oral care tablet is a mouthwash, the oral care tablet exhibits effects such as cleaning the oral cavity and preventing bad breath.

[0028] The oral care tablet is preferably chewed before use. When the oral care tablet is used as a dentifrice, the oral care tablet is preferably chewed, brushed with a toothbrush, and rinsed with water before use. When the oral care tablet is used as a mouthwash, the oral care tablet is preferably chewed, brushed with water, and rinsed with water before use.

[0029] The shape of the oral care tablet is not particularly limited. The shape of the oral care tablet can be tablet, spherical, granular, pellet, disk, rectangular, donut, and rod. From the viewpoint of improving the handling property and further enhancing the cleaning effect by foaming, the shape of the oral care tablet is preferably tablet or spherical, and more preferably tablet.

[0030] The size of the oral care tablet is not particularly limited. The planar area of ​​the oral care tablet is preferably 10 mm 2 More than 80mm, preferably 80mm 2 More preferably, 100 mm 2 More than 2000 mm, preferably 2 Less than or equal to 1000 mm, more preferably 2 When the planar area of ​​the oral care tablet is equal to or larger than the lower limit and equal to or smaller than the upper limit, the oral care tablet can be well packaged and well effervescent. When the oral care tablet is in tablet form, the diameter of the tablet is, for example, 12 mm.

[0031] The thickness of the oral care tablet is preferably 1.0 mm or more, more preferably 1.5 mm or more, even more preferably 2.0 mm or more, and is preferably 10.0 mm or less, more preferably 9.0 mm or less, even more preferably 8.0 mm or less. When the thickness of the oral care tablet is equal to or more than the above lower limit and equal to or less than the above upper limit, the oral care tablet can be well packaged and can be well foamed.

[0032] From the viewpoint of improving handleability and further enhancing the cleaning action due to effervescence, the weight per tablet of the oral care tablet is preferably 50 mg or more, more preferably 100 mg or more, even more preferably 300 mg or more, and is preferably 5000 mg or less, more preferably 3000 mg or less, even more preferably 2000 mg or less.

[0033] The hardness of the oral care tablet is preferably 0.8 kgf or more, more preferably 1.0 kgf or more, even more preferably 1.5 kgf or more, and is preferably 15.0 kgf or less, more preferably 10.0 kgf or less, even more preferably 7.0 kgf or less. When the hardness of the oral care tablet is equal to or more than the lower limit and equal to or less than the upper limit, the oral care tablet can be well packaged, can be well foamed, can be prevented from cracking and chipping, and can be easily crushed.

[0034] The hardness of the oral care tablet can be measured using a hardness tester, such as the "Kiya hardness tester" manufactured by Fujiwara Seisakusho.

[0035] The method of storing the oral care tablets is not particularly limited. The oral care tablets are preferably stored in a packaging container (package). The oral care tablets may be stored individually in a packaging container, or a plurality of tablets may be stored together in a packaging container. Examples of the material of the packaging container include paper, resin, and metal. The oral care tablets may be packaged in paper, resin, or metal. Examples of the metal include aluminum and stainless steel. From the viewpoint of enhancing storage stability, the oral care tablets are preferably stored in a sealed state. The packaging container is preferably a pouch container or a bottle container. The packaging container is preferably a pouch container because of its excellent sealing property. The packaging container is preferably a bottle container because of its excellent take-out property.

[0036] Each component contained in the oral care tablet will be described below.

[0037] (foaming agent) The oral care tablet contains an effervescent agent. Since the oral care tablet contains an effervescent agent, it effervesces when mixed with saliva (moisture) in the oral cavity, and the bubbles can wash away dirt (deposits) adhering to the oral cavity.

[0038] In the oral care tablet, the effervescent agent includes an effervescent agent coated with a coating agent. In the oral care tablet, the effervescent agent includes an effervescent agent coated with a coating agent, so that storage stability can be improved. As a result, even if the oral care tablet is stored for a long period of time, puffing of the package can be suppressed, and the effervescent agent can be excellent in foaming during use, and a sufficient cleaning effect and sensory or visual satisfaction can be obtained.

[0039] The foaming agent is not particularly limited. Examples of the foaming agent include a carbonic acid compound and an acid compound (organic acid or inorganic acid). The foaming agent may be used alone or in combination of two or more kinds.

[0040] From the viewpoint of improving the foaming property, the foaming agent preferably contains a carbonate compound, preferably contains an acid compound, and more preferably contains a carbonate compound and an acid compound. From the viewpoint of improving the foaming property, the foaming agent preferably contains a mixture of a carbonate compound and an acid compound.

[0041] Examples of the carbonate compound include carbonate, hydrogen carbonate, and a double salt of carbonate and hydrogen carbonate. Examples of the carbonate include sodium carbonate, potassium carbonate, magnesium carbonate, and calcium carbonate. Examples of the hydrogen carbonate include sodium hydrogen carbonate, potassium hydrogen carbonate, magnesium hydrogen carbonate, and calcium hydrogen carbonate. Examples of the double salt of carbonate and hydrogen carbonate include sodium sesquicarbonate. The carbonate compound may be used alone or in combination of two or more.

[0042] From the viewpoint of improving the effervescence, the carbonate compound preferably contains a carbonate salt, more preferably contains sodium carbonate, calcium carbonate or sodium bicarbonate, and even more preferably contains sodium bicarbonate. From the viewpoint of improving the effervescence, the effervescent agent preferably contains sodium bicarbonate. From the viewpoint of increasing the abrasiveness when the oral care tablet is used as a dentifrice, the effervescent agent preferably contains calcium carbonate. In the oral care tablet containing calcium carbonate, calcium carbonate acts as an effervescent agent and an abrasive.

[0043] The acid compound may be an organic acid or an inorganic acid. The organic acid may be citric acid, tartaric acid, fumaric acid, malic acid, maleic acid, gluconic acid, succinic acid, ascorbic acid, malonic acid, salicylic acid, etc. The inorganic acid may be phosphoric acid, boric acid, sulfamic acid, etc. The acid compound may be used alone or in combination of two or more.

[0044] From the viewpoint of improving the foaming properties, the acid compound preferably contains an organic acid, more preferably contains citric acid, tartaric acid, fumaric acid, malic acid, or succinic acid, and even more preferably contains citric acid.

[0045] From the viewpoint of improving the foaming properties, it is preferable that the foaming agent contains sodium carbonate, calcium carbonate, or sodium hydrogen carbonate, and contains citric acid, tartaric acid, fumaric acid, malic acid, or succinic acid. From the viewpoint of improving the foaming properties, it is particularly preferable that the foaming agent contains sodium hydrogen carbonate and citric acid. From the viewpoint of improving the foaming properties, it is particularly preferable that the foaming agent contains a mixture of sodium hydrogen carbonate and citric acid.

[0046] When the oral care tablet contains one effervescent agent, the effervescent agent is coated with a coating agent. When the oral care tablet contains two or more effervescent agents, at least one of the effervescent agents is coated with a coating agent.

[0047] In the oral care tablet, the carbonate compound may be coated with a coating agent, the acid compound may be coated with a coating agent, or the carbonate compound and the acid compound may be coated with a coating agent. In the oral care tablet, the sodium carbonate may be coated with a coating agent, the calcium carbonate may be coated with a coating agent, or the sodium hydrogen carbonate may be coated with a coating agent. In the oral care tablet, the citric acid may be coated with a coating agent, the tartaric acid may be coated with a coating agent, the fumaric acid may be coated with a coating agent, the malic acid may be coated with a coating agent, or the succinic acid may be coated with a coating agent.

[0048] The coating agent includes calcium citrate, triglyceride, lactose, shellac, polyvinylpyrrolidone, hydroxypropyl cellulose, polyethylene glycol, and pullulan. The coating agent may be used alone or in combination of two or more. The triglyceride includes hydrogenated rapeseed oil, etc. From the viewpoint of improving formulation properties, the coating agent preferably includes calcium citrate or triglyceride, and more preferably includes calcium citrate.

[0049] From the viewpoint of improving the foaming property, the foaming agent coated with the coating agent preferably contains citric acid coated with calcium citrate or citric acid coated with triglyceride, and more preferably contains citric acid coated with calcium citrate. From the viewpoint of improving the foaming property, the foaming agent preferably contains citric acid coated with calcium citrate or citric acid coated with triglyceride, and more preferably contains citric acid coated with calcium citrate. From the viewpoint of improving the foaming property, it is preferable that the citric acid is coated with calcium citrate or triglyceride.

[0050] The foaming agent preferably contains a carbonate compound and an acid compound coated with a coating agent. That is, the foaming agent preferably contains a carbonate compound not coated with a coating agent and an acid compound coated with a coating agent. In this case, the foaming agent can be made good in tableting properties, and foam can be generated quickly when the oral care tablet is chewed, so that the oral cavity can be cared for simply by spitting out the foam in the oral cavity or rinsing the oral cavity with a small amount of water.

[0051] In the oral care tablet (100% by weight), the content of the effervescent agent is preferably 3% by weight or more, more preferably 5% by weight or more, even more preferably 10% by weight or more, and preferably 50% by weight or less, more preferably 40% by weight or less. When the content of the effervescent agent is equal to or more than the lower limit, the cleaning effect can be further improved. When the content of the effervescent agent is equal to or less than the upper limit, puffing of the package can be prevented, and storage stability can be further improved. When the oral care tablet contains two or more kinds of effervescent agents, the content of the effervescent agent refers to the total content of the effervescent agents (hereinafter the same).

[0052] From the viewpoint of further enhancing the cleaning action and increasing the abrasiveness when the oral care tablet is used as a dentifrice, when the foaming agent contains calcium carbonate, the content of the calcium carbonate in 100% by weight of the oral care tablet is preferably 1% by weight or more, more preferably 2% by weight or more, even more preferably 3% by weight or more, and is preferably 50% by weight or less, more preferably 45% by weight or less, even more preferably 40% by weight or less.

[0053] From the viewpoint of further enhancing the cleansing action, the content of foaming agent other than calcium carbonate in the above oral care tablet (100% by weight) is preferably 1% by weight or more, more preferably 2% by weight or more, even more preferably 3% by weight or more, and is preferably 45% by weight or less, more preferably 40% by weight or less, even more preferably 35% by weight or less.

[0054] From the viewpoint of further enhancing the cleansing effect, the content of the carbonate compound in 100% by weight of the oral care tablet is preferably 2% by weight or more, more preferably 4% by weight or more, even more preferably 5% by weight or more, and is preferably 45% by weight or less, more preferably 40% by weight or less, even more preferably 35% by weight or less.

[0055] From the viewpoint of further enhancing the cleaning action, the content of the carbonate compound in 100% by weight of the foaming agent is preferably 30% by weight or more, more preferably 40% by weight or more, and is preferably 90% by weight or less, more preferably 80% by weight or less.

[0056] From the viewpoint of further enhancing the cleaning action, in the foaming agent, the content of the acid compound (organic acid or inorganic acid) per 100 parts by weight of the carbonate compound is preferably 10 parts by weight or more, more preferably 15 parts by weight or more, even more preferably 20 parts by weight or more, and is preferably 100 parts by weight or less, more preferably 90 parts by weight or less, even more preferably 80 parts by weight or less.

[0057] In the oral care tablet 100% by weight, the content of the effervescent agent coated with the coating agent is preferably 1% by weight or more, more preferably 3% by weight or more, even more preferably 5% by weight or more, and preferably 30% by weight or less, more preferably 25% by weight or less, even more preferably 20% by weight or less. When the content of the effervescent agent coated with the coating agent is above the lower limit, puffing of the package can be prevented, storage stability can be further improved, and cleaning action can be further improved. When the content of the effervescent agent coated with the coating agent is below the upper limit, cleaning action can be further improved.

[0058] In 100% by weight of the foaming agent, the content of the foaming agent coated with the coating agent is preferably 10% by weight or more, more preferably 15% by weight or more, even more preferably 20% by weight or more, and preferably 60% by weight or less, more preferably 55% by weight or less, even more preferably 50% by weight or less. When the content of the foaming agent coated with the coating agent is equal to or more than the lower limit, puffing of the package can be prevented and storage stability can be further improved. When the content of the foaming agent coated with the coating agent is equal to or less than the upper limit, cleaning action can be further improved.

[0059] In 100% by weight of the foaming agent, the content of the citric acid coated with the calcium citrate is preferably 10% by weight or more, more preferably 15% by weight or more, even more preferably 20% by weight or more, and preferably 60% by weight or less, more preferably 55% by weight or less, even more preferably 50% by weight or less. When the content of the citric acid coated with the calcium citrate is equal to or more than the lower limit, puffing of the package can be prevented and storage stability can be further improved. When the content of the citric acid coated with the calcium citrate is equal to or less than the upper limit, cleaning action can be further improved.

[0060] In the foaming agent (100% by weight), the content of the citric acid coated with the triglyceride is preferably 10% by weight or more, more preferably 15% by weight or more, even more preferably 20% by weight or more, and preferably 60% by weight or less, more preferably 55% by weight or less, even more preferably 50% by weight or less. When the content of the citric acid coated with the triglyceride is equal to or more than the lower limit, puffing of the package can be prevented and storage stability can be further improved. When the content of the citric acid coated with the triglyceride is equal to or less than the upper limit, cleaning action can be further improved.

[0061] (Binding Agent) The oral care tablet contains a binder. Since the oral care tablet contains a binder, the oral care tablet can be easily compressed to have a desired hardness and thickness.

[0062] Examples of the binder include polyvinylpyrrolidone, polyoxyethylene, polyethylene glycol, carbowax, nonionic surfactants, sodium carboxymethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, cellulose, gelatin, clay, lactose, sorbitol, glucose, and xylitol. Only one type of the binder may be used, or two or more types may be used in combination.

[0063] From the viewpoint of improving the compressibility of oral care tablets, the binder preferably contains glycerin fatty acid ester, polyethylene glycol, cellulose, or hydroxypropyl cellulose, and more preferably contains polyethylene glycol or cellulose.

[0064] From the viewpoint of improving the tableting properties of the oral care tablet, the content of the binder in 100% by weight of the oral care tablet is preferably 0.1% by weight or more, more preferably 0.5% by weight or more, even more preferably 1% by weight or more, and is preferably 20% by weight or less, more preferably 15% by weight or less, even more preferably 10% by weight or less.

[0065] From the viewpoint of improving the tableting properties of oral care tablets, the weight ratio of the content of the effervescent agent to the content of the binder (content of the effervescent agent / content of the binder) is preferably 1.0 or more, more preferably 1.3 or more, even more preferably 1.5 or more, and is preferably 10.0 or less, more preferably 9.0 or less, even more preferably 8.0 or less.

[0066] From the viewpoint of improving the tableting properties of oral care tablets, the weight ratio of the content of the effervescent agent coated with the coating agent to the content of the binder (content of the effervescent agent coated with the coating agent / content of the binder) is preferably 0.2 or more, more preferably 0.4 or more, and is preferably 4.0 or less, more preferably 3.5 or less, and even more preferably 3.0 or less.

[0067] (Cleaning agent) The oral care tablet preferably contains a detergent. When the oral care tablet contains a detergent, the cleaning action can be further enhanced.

[0068] The above-mentioned cleaning agent includes a surfactant, soap nut extract powder, saponin, etc. The above-mentioned cleaning agent may be used alone or in combination of two or more kinds.

[0069] Examples of the surfactant include cationic surfactants, anionic surfactants, nonionic surfactants, amphoteric surfactants, etc. The surfactants may be used alone or in combination of two or more.

[0070] Examples of the cationic surfactant include alkyl-type quaternary ammonium salts, dialkyl-type quaternary ammonium salts, trialkyl-type quaternary ammonium salts, monoalkyl ether-type quaternary ammonium salts, alkylamine salts, and fatty acid amideamine salts.

[0071] Examples of the anionic surfactant include higher fatty acid salts (higher fatty acid soaps) such as potassium stearate and triethanolamine stearate; alkyl sulfate salts such as sodium lauryl sulfate, triethanolamine lauryl sulfate, sodium myristyl sulfate, sodium stearyl sulfate, sodium oleyl sulfate, and sodium cetyl sulfate; polyoxyethylene alkyl ether sulfates such as sodium polyoxyethylene lauryl ether sulfate and sodium polyoxyethylene myristyl ether sulfate; α-olefin (C14-16) sulfonates such as sodium tetradecene sulfonate; N-acyl methyl taurine salts such as sodium myristoyl methyl taurine, sodium palmitoyl methyl taurine, sodium stearoyl methyl taurine, sodium oleoyl methyl taurine, and sodium coconut oil fatty acid methyl taurine; alkyl sulfosuccinate salts such as dioctyl sodium sulfosuccinate and disodium lauryl sulfosuccinate; and polyoxyethylene sulfosuccinate. polyoxyethylene alkyl salts of sulfosuccinic acid such as disodium lauryl; monoalkyl phosphate salts such as sodium lauryl phosphate, sodium cetyl phosphate, and diethanolamine cetyl phosphate; polyoxyethylene alkyl ether phosphate salts such as sodium polyoxyethylene lauryl ether phosphate, sodium polyoxyethylene cetyl ether phosphate, sodium polyoxyethylene oleyl ether phosphate, sodium polyoxyethylene alkylphenyl ether phosphate, and triethanolamine polyoxyethylene alkylphenyl ether phosphate; acyl sarcosine salts such as potassium lauroyl sarcosine, triethanolamine lauroyl sarcosine, sodium myristoyl sarcosine, and sodium coconut oil fatty acid sarcosine; N-acyl-N-methyl-β-alanine salts such as sodium lauroyl methylalanine, triethanolamine lauroyl methylalanine, sodium myristoyl methylalanine, and sodium coconut oil fatty acid methylalanine;Acyl glutamates such as sodium lauroyl glutamate, triethanolamine lauroyl glutamate, sodium myristoyl glutamate, potassium stearoyl glutamate, disodium stearoyl glutamate, sodium coconut oil fatty acid acyl glutamate, and triethanolamine coconut oil fatty acid acyl glutamate; acylaspartates; acyltaurate salts; acyl glycine salts such as potassium coconut oil fatty acid acyl glycine and sodium coconut oil fatty acid acyl glycine; alkyl ether glycol acetates such as sodium lauryl glycol acetate (sodium dodecane-1,2-diol acetate), potassium lauryl glycol acetate, sodium myristyl glycol acetate, potassium myristyl glycol acetate, sodium palmityl glycol acetate, potassium palmityl glycol acetate, sodium stearyl glycol acetate, potassium stearyl glycol acetate, sodium behenyl glycol acetate, and potassium behenyl glycol acetate;

[0072] Examples of the nonionic surfactants include sorbitan fatty acid esters, glycerin fatty acid esters, and alkylene oxide adducts thereof, polyoxyalkylene alkyl ethers, polyoxyalkylene fatty acid esters, polyoxyalkylene alkylphenols, polyoxyethylene sorbitol fatty acid esters, polyoxyethylene alkylphenyl formaldehyde condensates, polyoxyethylene sterol and derivatives thereof, polyoxyethylene lanolin and derivatives thereof, polyoxyethylene beeswax derivatives, sugar esters, polyoxyethylene hydrogenated castor oil, and polyoxyethylene castor oil.

[0073] Examples of the sorbitan fatty acid ester include sorbitan monooleate, sorbitan monostearate, sorbitan monoisostearate, sorbitan monopalmitate, sorbitan monolaurate, sorbitan trioleate, sorbitan tristearate, sorbitan sesquistearate, sorbitan sesquioleate, sorbitan sesquiisostearate, and sorbitan coconut oil fatty acid.

[0074] Examples of the alkylene oxide adducts of the sorbitan fatty acid esters include polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitan monopalmitate, polyoxyethylene sorbitan monostearate, polyoxyethylene sorbitan monooleate, polyoxyethylene sorbitan monoisostearate, polyoxyethylene sorbitan monococonut oil fatty acid polyoxyethylene sorbitan tristearate, and polyoxyethylene sorbitan trioleate.

[0075] The glycerin fatty acid ester may be a monoglycerin fatty acid ester or a polyglycerin fatty acid ester.

[0076] Examples of the monoglycerin fatty acid ester include glyceryl monocaprylate, glyceryl monocaprate, glyceryl monolaurate, glyceryl monomyristate, glyceryl monopalmitate, glyceryl monostearate, glyceryl monoisostearate, glyceryl monobehenate, glyceryl monooleate, glyceryl monoerucate, glyceryl sesquioleate, glyceryl distearate, glyceryl diisostearate, and glyceryl diarachate.

[0077] Examples of the polyglycerol fatty acid ester include polyglycerol fatty acid esters having a polymerization degree of 2 to 10, such as diglyceryl monocaprylate, decaglyceryl monocaprylate, hexaglyceryl monocaprate, tetraglyceryl monolaurate, hexaglyceryl monolaurate, decaglyceryl monolaurate, polyglyceryl monolaurate, decaglyceryl monomyristate, decaglyceryl monostearate, decaglyceryl monoisostearate, polyglyceryl monostearate, diglyceryl monooleate, hexaglyceryl monooleate, diglyceryl sesquioleate, polyglyceryl diisostearate, polyglyceryl distearate, diglyceryl triisostearate, and polyglyceryl tristearate.

[0078] Examples of the alkylene oxide adducts of the glycerin fatty acid esters include polyoxyethylene glyceryl monostearate and polyoxyethylene glyceryl monooleate.

[0079] Examples of the polyoxyalkylene alkyl ether include polyoxyethylene lauryl ether, polyoxyethylene cetyl ether, polyoxyethylene stearyl ether, polyoxyethylene oleyl ether, polyoxyethylene polyoxypropylene lauryl ether, polyoxypropylene cetyl ether, polyoxypropylene isocetyl ether, polyoxypropylene stearyl ether, and polyoxypropylene oleyl ether.

[0080] Examples of the polyoxyalkylene fatty acid ester include polyethylene glycol fatty acid esters such as polyethylene glycol monooleate, polyethylene glycol monostearate, polyethylene glycol distearate, and polyethylene glycol monolaurate; and propylene glycol fatty acid esters such as propylene glycol monostearate, propylene glycol monolaurate, and propylene glycol monooleate.

[0081] Examples of the amphoteric surfactant include alkylamidobetaine-type amphoteric surfactants such as lauric acid amidopropyl betaine and coconut oil fatty acid amidopropyl betaine; glycine-type amphoteric surfactants such as alkyl glycine salts, carboxymethyl glycine salts, and N-acylaminoethyl-N-2-hydroxyethyl glycine salts; aminopropionic acid-type amphoteric surfactants such as alkylaminopropionates and alkyliminodipropionates; alkyldimethylaminoacetic acid betaines, alkylamidopropyl dimethylaminoacetic acid betaines, and alkyldihydroxyethyl amphoteric surfactants such as alkylaminoacetic acid betaine; sulfobetaine-type amphoteric surfactants such as alkylhydroxysulfobetaine; imidazolinium-type amphoteric surfactants such as alkylcarboxymethylhydroxyethylimidazolinium betaine; N-alkyl-N,N-dimethylammonium-N-propyl sulfonate; N-alkyl-N,N-dimethylammonium-N-(2-hydroxypropyl) sulfonate; and N-fatty acid amidopropyl-N,N-dimethylammonium-N-(2-hydroxypropyl) sulfonate.

[0082] From the viewpoint of further enhancing the cleaning action, the surfactant preferably contains an anionic surfactant, more preferably contains an alkyl sulfate, α-olefin (C14-16) sulfonate, or acylamino acid salt, even more preferably contains an alkyl sulfate, particularly preferably contains an alkyl sulfate ester salt, and most preferably contains sodium lauryl sulfate. The α-olefin (C14-16) sulfonate particularly preferably contains sodium tetradecene sulfonate (C14). The number of carbon atoms of the acyl group in the acylamino acid salt is preferably 8 or more, more preferably 12 or more, and preferably 18 or less, more preferably 16 or less. The acylamino acid salt preferably contains an acyl glutamate, an acylaspartate, an acyl sarcosine salt, or an acyltaurine salt. The acylamino acid salt preferably contains an acidic acylamino acid salt, more preferably contains an acyl glutamate or an acylaspartate, and particularly preferably contains an acyl glutamate. The acyl glutamate preferably includes lauroyl glutamate, myristoyl glutamate, lauroyl glutamate, lauroyl aspartate, lauroyl sarcosine salt, or lauroyl methyl taurine salt, more preferably includes lauroyl glutamate, and even more preferably includes sodium lauroyl glutamate. The α-olefin (C14-16) sulfonate and the acyl amino acid salt preferably include an alkali metal salt, and more preferably include a sodium salt. The above-mentioned preferred forms can further enhance the cleaning effect.

[0083] In the oral care tablet (100% by weight), the content of the detergent is preferably 0.1% by weight or more, more preferably 0.3% by weight or more, even more preferably 0.5% by weight or more, and preferably 10% by weight or less, more preferably 7% by weight or less, and even more preferably 5% by weight or less. When the content of the detergent is equal to or more than the lower limit, the cleaning effect can be further enhanced. When the content of the detergent is equal to or less than the upper limit, the solubility of the oral care tablet in water can be increased. When the oral care tablet contains two or more detergents, the content of the detergent refers to the total content of the detergents.

[0084] In the oral care tablet 100% by weight, the content of the anionic surfactant is preferably 0.1% by weight or more, more preferably 0.3% by weight or more, even more preferably 0.5% by weight or more, and preferably 10% by weight or less, more preferably 7% by weight or less, even more preferably 5% by weight or less. When the content of the anionic surfactant is above the lower limit, the cleaning effect can be further improved. When the content of the anionic surfactant is below the upper limit, the solubility of the oral care tablet in water can be improved.

[0085] The content of the detergent is preferably 0.5 parts by weight or more, more preferably 1 part by weight or more, even more preferably 2 parts by weight or more, and is preferably 30 parts by weight or less, more preferably 25 parts by weight or less, based on 100 parts by weight of the foaming agent. When the content of the detergent is equal to or more than the lower limit, the cleaning effect can be further improved. When the content of the detergent is equal to or less than the upper limit, the solubility of the oral care tablet in water can be improved.

[0086] (Abrasive) The oral care tablet preferably contains an abrasive. When the oral care tablet contains an abrasive, the abrasiveness can be increased, and the cleaning action can be further improved.

[0087] Examples of the abrasive include calcium-containing abrasives, silica abrasives, carbonate abrasives, phosphate abrasives, alumina abrasives, and other abrasives. The abrasives may be used alone or in combination of two or more.

[0088] Examples of the calcium-containing abrasive include calcium carbonate, dicalcium phosphate, tricalcium phosphate, calcium orthophosphate, calcium metaphosphate, calcium polyphosphate, and calcium hydroxyapatite.

[0089] The carbonate abrasives include calcium carbonate and strontium carbonate.

[0090] The phosphate abrasives include calcium phosphate, sodium hexametaphosphate, dicalcium phosphate, tricalcium phosphate, calcium orthophosphate, calcium metaphosphate, calcium polyphosphate, polyphosphate, and pyrophosphate.

[0091] The silica abrasives include fused silica, fumed silica, precipitated silica, and hydrous silica.

[0092] The alumina abrasives include polycrystalline alumina, calcined alumina, fused alumina, wet-ground alumina, and hydrated alumina.

[0093] The other abrasives include diatomaceous earth, barium sulfate, wollastonite, perlite, polymethyl methacrylate particles, and Tospearl.

[0094] When the oral care tablet contains an abrasive, the oral care tablet contains calcium carbonate or an abrasive other than calcium carbonate as the abrasive. From the viewpoint of increasing abrasiveness, the abrasive preferably contains calcium carbonate or silica, and more preferably contains calcium carbonate. The oral care tablet optionally contains calcium carbonate. The oral care tablet may or may not contain calcium carbonate.

[0095] From the viewpoint of enhancing abrasiveness, the content of the abrasive in 100% by weight of the oral care tablet is preferably 0.1% by weight or more, more preferably 0.5% by weight or more, even more preferably 1% by weight or more, and is preferably 40% by weight or less, more preferably 30% by weight or less. When the oral care tablet contains calcium carbonate, the content of the foaming agent and the content of the abrasive each include the content of calcium carbonate.

[0096] From the viewpoint of enhancing abrasiveness, the content of abrasives other than calcium carbonate in the oral care tablet (100% by weight) is preferably 0.1% by weight or more, more preferably 0.5% by weight or more, even more preferably 1% by weight or more, and is preferably 37% by weight or less, more preferably 35% by weight or less, even more preferably 30% by weight or less.

[0097] (Other ingredients) The above-mentioned oral care tablet may contain additives, as necessary, such as lubricants, flow improvers, anti-redeposition agents, deodorizers, sweeteners, flavorings, colorants, chelating agents, pH adjusters, enzymes, foam stabilizers, preservatives, antibacterial and germicidal agents, preservatives, bulking agents, excipients, disintegrants, thickeners, anti-caking agents, and specific gravity adjusters.

[0098] Examples of the lubricant include sodium benzoate, benzoic acid, talc, hardened oil, sucrose fatty acid ester, glycerin fatty acid ester, kaolin, calcium stearate, sucrose stearate, magnesium stearate, etc. The lubricant may be used alone or in combination of two or more.

[0099] Examples of the flow improver include fumed silica, hydrated silica, calcium silicate, silica, etc. The flow improver may be used alone or in combination of two or more kinds.

[0100] From the viewpoint of further enhancing the cleansing effect and preventing redeposition of dirt in the oral cavity, the oral care tablet preferably contains a redeposition inhibitor.

[0101] Examples of the anti-redeposition agent include sodium polyphosphate, sodium metaphosphate, etc. The anti-redeposition agent may be used alone or in combination of two or more kinds.

[0102] From the viewpoint of further enhancing the cleansing action and preventing redeposition of dirt into the oral cavity, it is preferable that the anti-redeposition agent contains sodium polyphosphate or sodium metaphosphate.

[0103] Examples of the deodorant include zinc chloride, sodium copper chlorophyllin, green coffee bean extract, burdock powder, tea leaf extract, bay leaf extract, persimmon tannin, perilla seed extract, mastic resin oil, etc. The deodorant may be used alone or in combination of two or more kinds.

[0104] Examples of the sweetener include erythritol, sorbitol, sodium saccharin, aspartame, trehalose, stevioside, stevia extract, paramethoxycinnamic aldehyde, neohesperidyl dihydrochalcone, acesulfame potassium, sucralose, perillartine, etc. The sweeteners may be used alone or in combination of two or more.

[0105] Examples of the flavoring include menthol, anethole, menthone, cineole, limonene, carvone, salicylic acid, spearmint, peppermint, essential oils, and peppermint oil. The flavoring may be used alone or in combination of two or more.

[0106] The present invention will be specifically described below with reference to examples and comparative examples, but the present invention is not limited to the following examples.

[0107] The following materials were prepared for use in preparing oral care tablets:

[0108] Foaming Agent: Citric acid coated with calcium citrate ("Citric Acid CI" manufactured by Iwata Chemical Industry Co., Ltd.) Citric acid coated with triglyceride (hydrogenated rapeseed oil) (NOF Corp. "Citric Acid MC-80R") Sodium hydrogen carbonate (Tokuyama "sodium bicarbonate") Calcium carbonate (Shiraishi Calcium Co., Ltd.'s "Colocalso WB") Citric acid ("Anhydrous Citric Acid FG" manufactured by Showa Kako Co., Ltd.)

[0109] Binder: Polyethylene glycol (Sanyo Chemical Industries, Ltd. "PEG-6000P") Cellulose ("KC Flock W-200G" manufactured by Nippon Paper Industries Co., Ltd.)

[0110] Cleaning agent: Sodium lauroyl glutamate (Ajinomoto Co., Inc. "Amisoft LS-11")

[0111] lubricant: Sucrose fatty acid ester ("Ryoto Sugar Ester B-370F" manufactured by Mitsubishi Chemical Foods Corporation)

[0112] Flow improver: Silica (Evonik Japan "Carplex CS-500")

[0113] Deodorant: Persimmon tannin ("Persimmon tannin T" manufactured by Fuji Chemical Industry Co., Ltd.)

[0114] sweetener: Sorbitol ("Sorbitol FP50M" manufactured by Bussan Food Science Co., Ltd.)

[0115] Fragrance: menthol

[0116] (Examples 1 to 8 and Comparative Examples 1 to 4) The ingredients shown in Tables 1 to 3 below were mixed in the amounts shown in Tables 1 to 3 below, and tableted at 30 kN using a mold with a diameter of 12 mm to obtain tablets for oral care, each weighing 0.5 g.

[0117] (evaluation) (1) Storage stability (1-1) Whether or not puffing is done The resulting 10 oral care tablets were placed in a container with a volume of 40 cm 3 Three test specimens were prepared by sealing the samples in aluminum pouches of the same size, and each test specimen was stored for one month at 25°C, 40°C, and 50°C, respectively. After storage, each test specimen was judged for the presence or absence of puffing according to the following criteria. Puffing was considered to have occurred when the volume of the aluminum pouch after storage was 1.5 times or more the volume of the aluminum pouch before storage.

[0118] [Criteria for determining whether puffing is present or not] ○: No puffing occurred in any of the test specimens at 25°C, 40°C, and 50°C. ×: Puffing occurred in any of the test specimens at 25°C, 40°C, and 50°C.

[0119] (1-2) Foaming amount The resulting 10 oral care tablets were placed in a container with a volume of 40 cm 3 The tablets were sealed in an aluminum pouch to prepare test specimens, which were then stored at 25°C for one month. After storage, the oral care tablets were removed from the aluminum pouch, one tablet was placed in the mouth and chewed for about 10 seconds, and the amount of foaming in the oral cavity (amount of foaming) was evaluated. The amount of foaming of the oral care tablets was evaluated according to the following criteria.

[0120] [Criteria for determining foam volume] ○○: The effervescence continued until the entire amount was chewed. ○: The foaming stopped before the entire amount was chewed. ×: Almost no foaming even after chewing the entire amount

[0121] The compositions of the oral care tablets and the results are shown in Tables 1 to 3 below.

[0122] [Table 1]

[0123] [Table 2]

[0124] [Table 3]

Claims

1. A foaming agent and a binder, An oral care tablet, comprising an effervescent agent coated with a coating agent.

2. 2. The oral care tablet of claim 1, wherein the effervescent agent comprises sodium bicarbonate.

3. 3. The oral care tablet according to claim 1 or 2, wherein the effervescent agent coated with a coating agent comprises citric acid coated with calcium citrate or citric acid coated with a triglyceride.

4. 3. The tablet for oral care according to claim 1, wherein the content of the effervescent agent coated with the coating agent is 10% by weight or more and 60% by weight or less, based on 100% by weight of the effervescent agent.

5. the foaming agent coated with the coating agent comprises citric acid coated with calcium citrate; 3. The tablet for oral care according to claim 1 or 2, wherein the content of citric acid coated with calcium citrate is 10% by weight or more and 60% by weight or less in 100% by weight of the foaming agent.

6. The tablet for oral care according to claim 1 or 2, wherein the weight ratio of the content of the effervescent agent to the content of the binder is 1.0 or more and 10.0 or less.

7. 3. The tablet for oral care according to claim 1 or 2, wherein the weight ratio of the content of the effervescent agent coated with the coating agent to the content of the binder is 0.2 or more and 4.0 or less.

8. 3. The oral care tablet according to claim 1 or 2, further comprising a cleaning agent.

9. 3. The oral care tablet according to claim 1 or 2, which comprises an abrasive.

10. 3. The tablet for oral care according to claim 1 or 2, which is a dentifrice or mouthwash.

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