Nonaqueous composition for oral cavity

Abstract

To provide a nonaqueous composition for an oral cavity which, when applied to the oral cavity, delivers a comfortable sense of foaming and a satisfactory use feeling with reduced oiliness and which, after storage, can effectively prevent the generation of carbon dioxide gas.SOLUTION: The nonaqueous composition for the oral cavity comprises the following components (A) to (E): (A) a nonaqueous solvent having a relative permittivity at 25°C of less than 10 and a melting point of 0°C or lower, (B) an acid that is solid at 25°C, (C) a carbonic acid salt, (D) an oily gellant, and (E) a sugar alcohol in solid form at 25°C.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a non-aqueous oral composition.

Background Art

[0002] Non-aqueous oral compositions containing an organic acid and a carbonate as a carbon dioxide generating substance can generate carbon dioxide gas when applied in the oral cavity, providing a unique foaming sensation. Therefore, various non-aqueous oral compositions have been developed conventionally.

[0003] For example, Patent Document 1 discloses an oral composition containing a base for a non-aqueous oral composition, sodium bicarbonate, and an acidic component that is solid at room temperature, and attempts have been made to enhance foaming properties while alleviating bitterness and astringency. Further, Patent Document 2 discloses a paste dentifrice containing an organic acid coated with a coating agent, sodium hydrogen carbonate coated with a coating material, and polyacrylic acid, aiming to suppress the generation of carbon dioxide gas during long-term storage.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, even with the technologies described in any of the above patent documents, in the applied oral cavity, while ensuring a good feeling of use with a pleasant foaming sensation and suppressed oiliness, and further sufficiently preventing the generation of carbon dioxide gas even after storage, there is still room for improvement.

[0006] Accordingly, the present invention relates to a non-aqueous oral composition that, when applied in the oral cavity, provides a pleasant foaming sensation and a good feel with suppressed oiliness, and can effectively prevent the generation of carbon dioxide gas even after storage.

Means for Solving the Problems

[0007] Therefore, the present inventors have conducted various studies and found that by containing a non-aqueous solvent having a specific relative permittivity value, an acid that is solid at 25°C, a carbonate, an oily gelling agent, and a sugar alcohol that is solid at 25°C, it is possible to obtain a non-aqueous oral composition that not only maintains good production stability but also provides a good foaming sensation and feel during use, and has excellent storage stability, thereby effectively preventing the generation of carbon dioxide gas even after storage.

[0008] That is, the present invention provides a non-aqueous oral composition containing the following components (A) to (E): (A) A non-aqueous solvent having a relative permittivity of less than 10 at 25°C and a melting point of 0°C or lower (B) An acid that is solid at 25°C (C) A carbonate (D) An oily gelling agent (E) A sugar alcohol that is solid at 25°C The present invention provides a non-aqueous oral composition containing these components.

Effects of the Invention

[0009] According to the non-aqueous oral composition of the present invention, when applied in the oral cavity, carbon dioxide gas forms bubbles with a particularly pleasant foaming sensation and bounces pleasantly in the oral cavity, while suppressing unpleasant oiliness and providing a refreshing feeling even after use. In addition, the non-aqueous oral composition of the present invention exhibits excellent storage stability while maintaining good shape retention and production stability, effectively preventing the generation of carbon dioxide gas even after storage, and avoiding unnecessary swelling of the container during storage in the filled container.

Brief Description of the Drawings

[0010]

Figure 1

Modes for Carrying Out the Invention

[0011] Hereinafter, the present invention will be described in detail. In the present invention, the "non-aqueous oral composition" means a composition that does not contain water as a constituent, and means an oral composition that substantially does not contain water except when unavoidably mixed. Note that substantially not containing water means that the water content in the oral composition is preferably less than 2% by mass, more preferably less than 1% by mass. Also, "good foaming feeling" means that when applied in the oral cavity, an acid and a carbonate that are solid at 25°C and contained as a carbon dioxide generating substance in the non-aqueous oral composition of the present invention start to react with the moisture in saliva to generate carbon dioxide gas, and such carbon dioxide gas becomes bubbles with a particularly pleasant foaming feeling and diffuses in the oral cavity while elastically bursting pleasantly, bringing a refreshing touch. Furthermore, "good usability" means a feeling that unpleasant oily feeling is suppressed and the flavor is not impaired when applied in the oral cavity. Therefore, the "refreshing feeling" brought about by the non-aqueous oral composition of the present invention means not only a good "foaming feeling" and "usability" when applied in the oral cavity, but also a "crisp feeling" that is felt even after application in addition to these feelings. It is a general term for excellent feelings in the oral cavity.

[0012] The non-aqueous oral composition of the present invention contains, as component (A), a non-aqueous solvent having a relative permittivity of less than 10 and a melting point of 0 °C or lower at 25 °C. In the non-aqueous oral composition of the present invention, as a carbon dioxide gas generating substance, among those containing an acid that is solid at 25 °C of component (B) described later and a carbonate of component (C), the presence of such component (A) effectively prevents the generation of unnecessary carbon dioxide gas during production, storage, or before use, and greatly contributes to ensuring excellent storage stability while maintaining good production stability. When the non-aqueous oral composition of the present invention is applied into the oral cavity, upon contact with saliva or the like, the reaction between component (B) and component (C) proceeds, and bubbles of carbon dioxide gas that exhibit a peculiar pleasant foaming sensation in the oral cavity are generated and diffusely spread in the oral cavity while pleasantly bursting, bringing about a refreshing touch. In the present invention, the "non-aqueous solvent" is a solvent other than water and substantially does not contain water. Also, the "melting point" means the value at 1 atmosphere.

[0013] The relative permittivity of component (A) at 25 °C is less than 10, preferably 5 or less, and more preferably 3 or less. Also, the melting point of component (A) is 0 °C or lower, preferably -10 °C or lower. Specific examples of such component (A) include one or more selected from hydrocarbon oils, volatile silicone oils, and ester oils.

[0014] Examples of the hydrocarbon oil include one or more selected from liquid paraffin, squalane, petrolatum, and turpentine oil.

[0015] Examples of the volatile silicone oil include one or more selected from octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, methylcyclopolysiloxane, octamethyltrisiloxane, tetradecamethylhexasiloxane, and low-viscosity methylpolysiloxane.

[0016] Examples of the ester oil include one or more selected from jojoba oil, argan oil, olive oil, coconut oil, and the like.

[0017] Among these components (A), from the viewpoint of effectively preventing the generation of unnecessary carbon dioxide gas during production, storage, or before use and ensuring excellent storage stability, hydrocarbon oil is preferable, one or two selected from liquid paraffin and squalane are more preferable, and liquid paraffin is even more preferable. The liquid paraffin is a mixture of colorless and odorless liquid alkanes having 20 or more carbon atoms, and commercially available known products can be used, and it is not particularly limited. However, in the present invention, those conforming to the standards specified in the raw material standards for quasi-drugs, etc. can be preferably used. More specifically, the liquid paraffin used as the component (A) preferably has a density at 15 °C of 0.800 to 0.900 g / cm 3 more preferably 0.820 to 0.890 g / cm 3 even more preferably 0.845 to 0.885 g / cm 3 still more preferably 0.850 to 0.880 g / cm 3 even still more preferably. Also, the liquid paraffin used as the component (A) preferably has a viscosity at 37.8 °C of 1 to 120 mm 2 / s, more preferably 10 to 100 mm 2 / s, even more preferably 37 to 95 mm 2 / s, still more preferably 40 to 90 mm 2 even still more preferably 74 to 88 mm 2 / s is even more preferably. Note that the viscosity of such liquid paraffin is a value measured using a glass capillary viscometer in accordance with the description in JIS K-2283.

[0018] From the viewpoints of effectively enhancing storage stability and providing a good feeling in use with suppressed unpleasant oily feeling when applied in the oral cavity, the content of component (A) in the non-aqueous oral composition of the present invention is preferably 15% by mass or more, more preferably 20% by mass or more, still more preferably 25% by mass or more, even more preferably 30% by mass or more, preferably 50% by mass or less, more preferably 45% by mass or less, still more preferably 41% by mass or less, and even more preferably 38% by mass or less. And the content of component (A) in the non-aqueous oral composition of the present invention is preferably 15 to 50% by mass, more preferably 20 to 45% by mass, still more preferably 25 to 41% by mass, and even more preferably 30 to 38% by mass.

[0019] The non-aqueous oral composition of the present invention contains an acid that is solid at 25°C as component (B). When the non-aqueous oral composition of the present invention is applied in the oral cavity, due to the presence of saliva or the like, the reaction between such component (B) and the carbonate of component (C) described below proceeds, and carbon dioxide gas bubbles that exhibit a unique pleasant foaming feeling that provides a refreshing feeling can be generated.

[0020] Examples of component (B) include organic acids or amino acids having 1 to 3 carboxy groups in the molecule and having 4 to 6 carbon atoms. More specifically, for example, one or more selected from malic acid, citric acid, succinic acid, fumaric acid, tartaric acid, adipic acid, aspartic acid, glutamic acid, and pyroglutamic acid can be mentioned. Among them, from the viewpoint of ensuring a good foaming feeling, one or more selected from malic acid, citric acid, tartaric acid, and succinic acid are preferable, one or two selected from malic acid and tartaric acid are more preferable, and malic acid is even more preferable. The content of malic acid in component (B) is preferably 20% by mass or more, preferably 40% by mass or more, more preferably 60% by mass or more, still more preferably 80% by mass, and even more preferably 100% by mass.

[0021] Further, the component (B) contained in the non-aqueous oral composition of the present invention may or may not have a coating layer formed by a coating material. From the viewpoint of generating bubbles of carbon dioxide gas that feel comfortable and elastic in the oral cavity and expressing a good foaming sensation, it is preferable that the component (B) does not have a coating layer. That the component (B) does not have a coating layer means that part or all of the surface of the component (B) is not coated with a coating material, that is, a coating layer is not formed on part or all of the surface of the component (B). The coating material is used as a material for previously coating part or all of the surface of the component (B) in order to suppress unnecessary reactions in the non-aqueous oral composition during production, storage, or before use and prevent the generation of carbon dioxide gas. Such a coating material may be any material that can coat part or all of the surface of the component (B).

[0022] From the viewpoint of generating bubbles of carbon dioxide gas that feel comfortable and elastic in the oral cavity and ensuring a good foaming sensation, the content of the component (B) in the non-aqueous oral composition of the present invention is preferably 6% by mass or more, more preferably 8% by mass or more, still more preferably 10% by mass or more, preferably 25% by mass or less, more preferably 22% by mass or less, and still more preferably 18% by mass or less. And the content of the component (B) in the non-aqueous oral composition of the present invention is preferably 6 to 25% by mass, more preferably 8 to 22% by mass, and still more preferably 10 to 18% by mass.

[0023] The non-aqueous oral composition of the present invention contains a carbonate as the component (C). Specific examples of such a component (C) include one or more selected from sodium hydrogen carbonate, potassium hydrogen carbonate, calcium hydrogen carbonate, sodium carbonate, potassium carbonate, calcium carbonate, and magnesium carbonate. Among them, from the viewpoint of enhancing storage stability, one or two selected from sodium hydrogen carbonate and sodium carbonate are preferable, and it is more preferable to contain both sodium hydrogen carbonate and sodium carbonate. From the viewpoint of enhancing the foaming sensation, sodium carbonate is preferred.

[0024] When containing sodium hydrogen carbonate and sodium carbonate as component (C), from the viewpoint of generating bubbles of carbon dioxide gas that elastically expand comfortably and ensuring a good foaming sensation, the content of sodium carbonate in 100% by mass of component (C) is preferably 10% by mass or more, more preferably 15% by mass or more, preferably 35% by mass or less, and more preferably 30% by mass or less.

[0025] In addition, since component (C) contained in the non-aqueous oral composition of the present invention has good production stability and excellent storage stability, similar to component (B), it may or may not have a coating layer. However, from the viewpoint of generating bubbles of carbon dioxide gas that elastically expand comfortably in the oral cavity and expressing a good foaming sensation, it is preferable that component (C) also does not have a coating layer. That component (C) does not have a coating layer means that part or all of the surface of component (C) is not coated with a coating material. The coating material is used as a material for coating part or all of the surface of component (C) in advance in order to suppress unnecessary reactions in the non-aqueous oral composition during production, storage, or before use and prevent the generation of carbon dioxide gas.

[0026] From the viewpoint of generating bubbles of carbon dioxide gas that elastically expand comfortably in the oral cavity and ensuring a good foaming sensation, the content of component (C) in the non-aqueous oral composition of the present invention is preferably 6% by mass or more, more preferably 8% by mass or more, still more preferably 10% by mass or more, preferably 35% by mass or less, more preferably 32% by mass or less, and still more preferably 30% by mass or less. And the content of component (C) in the non-aqueous oral composition of the present invention is preferably 6 to 35% by mass, more preferably 8 to 32% by mass, and still more preferably 10 to 30% by mass.

[0027] The mass ratio ((B) / (C)) of the content of component (B) to the content of component (C) is preferably 0.3 or more, more preferably 0.4 or more, still more preferably 0.5 or more, preferably 1.1 or less, more preferably 1 or less, still more preferably 0.9 or less, from the viewpoint of generating appropriate carbon dioxide gas to form pleasantly bouncy bubbles in the oral cavity. And the mass ratio ((B) / (C)) of the content of component (B) to the content of component (C) is preferably 0.3 to 1.1, more preferably 0.4 to 1, still more preferably 0.5 to 0.9.

[0028] The total content of component (B) and component (C) is preferably 12% by mass or more, more preferably 15% by mass or more, still more preferably 18% by mass or more, preferably 55% by mass or less, more preferably 53% by mass or less, still more preferably 50% by mass or less in the non-aqueous oral composition of the present invention, from the viewpoints of promoting the diffusion of carbon dioxide gas bubbles in the oral cavity and ensuring excellent storage stability. And the total content of component (B) and component (C) is preferably 12 to 55% by mass, more preferably 15 to 53% by mass, still more preferably 18 to 50% by mass in the non-aqueous oral composition of the present invention.

[0029] The mass ratio ({(B)+(C)} / (A)) of the total content of component (B) and component (C) to the content of component (A) is preferably 0.2 or more, more preferably 0.3 or more, still more preferably 0.5 or more, preferably 3.5 or less, more preferably 2.5 or less, still more preferably 2 or less, from the viewpoint of effectively generating highly diffusible carbon dioxide gas bubbles with a good foaming feeling when the reaction between component (B) and component (C) proceeds due to contact with saliva etc. when applied in the oral cavity, and presenting a good feeling in use with suppressed unpleasant oily feeling when applied in the oral cavity. And the mass ratio ({(B)+(C)} / (A)) of the total content of component (B) and component (C) to the content of component (A) is preferably 0.2 to 3.5, more preferably 0.3 to 2.5, still more preferably 0.5 to 2.

[0030] The non-aqueous oral composition of the present invention contains an oily gelling agent as component (D). Such an oily gelling agent of component (D) is a component that can solidify or gel component (A), contributes to the expression of appropriate shape retention, and also ensures good production stability.

[0031] Examples of such component (D) include fatty acids, fatty acid esters, or condensates of fatty acids, such as dextrin fatty acid esters, 12-hydroxystearic acid, and oligomers obtained by condensing a mixed fatty acid composed of glycerin, behenic acid, and eicosanedioic acid; Petroleum waxes or natural waxes having a melting point (value at 1 atm) of 50°C or higher, such as microcrystalline wax, polyethylene wax, paraffin wax, Fischer-Tropsch wax, carnauba wax, candelilla wax, ozokerite, and ceresin wax; Resin powders such as polyethylene powder; Metal soaps such as zinc stearate, calcium stearate, calcium palmitate, lithium 2-ethylhexanoate, and aluminum 12-hydroxystearate; N-acyl amino acid amides such as dibutyl lauroylglutamate amide, stearyl lauroylglutamate amide, and lauryl dicaproyllysine lauroylphenylalanine amide; N-acyl amino acid amine salts such as lauryl dicaproyllysine amine salt; N-acyl amino acid esters such as lauryl dicaproyllysine ester; One or more selected from clay minerals such as bentonite, organically modified bentonite, and laponite can be mentioned. Among these components (D), from the viewpoint of effectively promoting the solidification or gelation of component (A) and effectively suppressing unnecessary reactions between component (B) and component (C), one or more selected from fatty acids, fatty acid esters, or condensates of fatty acids are preferred, and dextrin fatty acid ester is more preferred.

[0032] From the viewpoints of solidifying or gelling component (A) well and preventing the generation of carbon dioxide gas, the content of component (D) in the non-aqueous oral composition of the present invention is preferably 0.5% by mass or more, more preferably 0.7% by mass or more, still more preferably 1% by mass or more, preferably 5% by mass or less, more preferably 4% by mass or less, still more preferably 3% by mass or less, even more preferably 2.3% by mass or less, and still even more preferably 1.8% by mass or less. And the content of component (D) in the non-aqueous oral composition of the present invention is preferably 0.5 to 5% by mass, more preferably 0.7 to 4% by mass, still more preferably 1 to 3% by mass, even more preferably 1 to 2.3% by mass, and still even more preferably 1 to 1.8% by mass.

[0033] From the viewpoint of generating bubbles of carbon dioxide gas that feel pleasantly fizzy in the oral cavity by components (B) and (C), ensuring a good foaming feeling, and presenting a good usability with suppressed unpleasant oily feeling when applied in the oral cavity, the mass ratio ((A) / (D)) of the content of component (A) to the content of component (D) is preferably 10 or more, more preferably 12 or more, still more preferably 15 or more, even more preferably 18 or more, and still even more preferably 20.5 or more, preferably 30 or less, more preferably 27 or less, and still more preferably 25 or less. And the mass ratio ((A) / (D)) of the content of component (A) to the content of component (D) is preferably 10 to 30, more preferably 12 to 27, still more preferably 15 to 25, even more preferably 18 to 25, and still even more preferably 20.5 to 25.

[0034] The non-aqueous oral composition of the present invention contains a sugar alcohol that is solid at 25°C as component (E). The solubility of component (E) in water at 25°C (the amount dissolved in 100% by mass of a saturated aqueous solution at 25°C) is preferably 5% by mass or more, more preferably 8% by mass or more, still more preferably 12% by mass or more, even more preferably 20% by mass or more, preferably 75% by mass or less, more preferably 65% by mass or less, still more preferably 55% by mass or less, from the viewpoints of ensuring a good feeling in use with suppression of an unpleasant oily feeling when applied in the oral cavity and a good foaming feeling, and enabling rapid dissolution and diffusion by saliva when applied in the oral cavity. And the solubility of component (E) in water at 25°C is preferably 5 to 75% by mass, preferably 8 to 65% by mass, more preferably 12 to 55% by mass, and even more preferably 20 to 55% by mass.

[0035] Specific examples of such component (E) include one or more selected from erythritol, mannitol, sorbitol, xylitol, and reduced palatinose (a mixture of α-D-glucopyranosyl-1,6-sorbitol and α-D-glucopyranosyl-1,6-mannitol). Among them, from the viewpoint of ensuring a good feeling in use with suppression of an oily feeling, one or more selected from erythritol, xylitol, and mannitol are preferable, one or two selected from erythritol and xylitol are more preferable, and erythritol is even more preferable.

[0036] From the viewpoint of ensuring a good feeling in use with the suppression of an unpleasant oily feeling and a good foaming feeling when applied in the oral cavity, the content of component (E) in the non-aqueous oral composition of the present invention is preferably 2% by mass or more, more preferably 5% by mass or more, still more preferably 8% by mass or more, even more preferably 15% by mass or more, preferably 45% by mass or less, more preferably 40% by mass or less, still more preferably 35% by mass or less. And the content of component (E) is preferably 2 to 45% by mass, more preferably 5 to 45% by mass, still more preferably 8 to 40% by mass, even more preferably 15 to 35% by mass in the non-aqueous oral composition of the present invention.

[0037] From the viewpoint of ensuring both a good feeling in use with the suppression of an unpleasant oily feeling and a foaming feeling when applied in the oral cavity, the mass ratio ((A) / (E)) of the content of component (A) to the content of component (E) is preferably 0.4 or more, more preferably 0.6 or more, still more preferably 0.8 or more, even more preferably 1 or more, preferably 15 or less, more preferably 8 or less, still more preferably 4 or less, even more preferably 3.5 or less. And the mass ratio ((A) / (E)) of the content of component (A) to the content of component (E) is preferably 0.4 to 15, more preferably 0.6 to 8, still more preferably 0.8 to 4, even more preferably 1 to 3.5.

[0038] The mass ratio ((B) / (E)) of the content of component (B) to the content of component (E) is preferably 0.1 or more, more preferably 0.2 or more, still more preferably 0.3 or more, even more preferably 0.5 or more, preferably 5 or less, more preferably 2 or less, still more preferably 1.5 or less, and even more preferably 1 or less, from the viewpoint of ensuring both a good feeling in use and a foaming feeling with suppressed unpleasant oily feeling when applied in the oral cavity. And the mass ratio ((B) / (E)) of the content of component (B) to the content of component (E) is preferably from 0.1 to 5, more preferably from 0.2 to 2, still more preferably from 0.3 to 1.5, and even more preferably from 0.5 to 1.

[0039] The mass ratio ((C) / (E)) of the content of component (C) to the content of component (E) is preferably 0.1 or more, more preferably 0.2 or more, still more preferably 0.3 or more, even more preferably 0.35 or more, preferably 8 or less, more preferably 3 or less, still more preferably 2.5 or less, and even more preferably 1.5 or less, from the viewpoint of ensuring both a good feeling in use and a foaming feeling with suppressed unpleasant oily feeling when applied in the oral cavity. And the mass ratio ((C) / (E)) of the content of component (C) to the content of component (E) is preferably from 0.1 to 8, more preferably from 0.2 to 3, still more preferably from 0.3 to 2.5, and even more preferably from 0.35 to 1.5.

[0040] From the viewpoint of effectively suppressing unnecessary reactions between component (B) and component (C) in the non-aqueous oral composition during production, storage, or before use, preventing the generation of carbon dioxide gas, and ensuring good production stability and excellent storage stability, the non-aqueous oral composition of the present invention preferably further contains one or more metal compounds (F) selected from zinc oxide, magnesium oxide, calcium oxide, aluminum oxide, titanium oxide, sodium sulfate, magnesium sulfate, calcium sulfate, calcium chloride, magnesium chloride, zinc chloride, magnesium silicate, and calcium silicate. Among them, from the viewpoint of effectively preventing the generation of carbon dioxide gas, one or more selected from zinc oxide, magnesium oxide, and magnesium sulfate are preferable, and one or two selected from zinc oxide and magnesium oxide are more preferable.

[0041] From the viewpoint of effectively preventing the generation of carbon dioxide gas in the non-aqueous oral composition during storage or before use, the content of component (F) in the non-aqueous oral composition of the present invention is preferably 0.5% by mass or more, more preferably 0.7% by mass or more, still more preferably 0.8% by mass or more, preferably 7% by mass or less, more preferably 5% by mass or less, and still more preferably 3% by mass or less. And the content of component (F) in the non-aqueous oral composition of the present invention is preferably 0.5 to 7% by mass, more preferably 0.7 to 5% by mass, and still more preferably 0.8 to 3% by mass.

[0042] From the viewpoint of effectively preventing the generation of carbon dioxide gas in the non-aqueous oral composition during storage or before use, the mass ratio ((F) / (A)) of the content of component (F) to the content of component (A) is preferably 0.005 or more, more preferably 0.008 or more, still more preferably 0.01 or more, preferably 0.1 or less, more preferably 0.08 or less, and still more preferably 0.05 or less. And the mass ratio ((F) / (A)) of the content of component (F) to the content of component (A) is preferably 0.005 to 0.1, more preferably 0.008 to 0.08, and still more preferably 0.01 to 0.05.

[0043] The mass ratio ((F) / (B)) of the content of component (F) to the content of component (B) is preferably 0.01 or more, more preferably 0.03 or more, still more preferably 0.05 or more, preferably 0.7 or less, more preferably 0.6 or less, and still more preferably 0.5 or less, from the viewpoint of effectively preventing the generation of carbon dioxide gas in the non-aqueous oral composition during storage or before use. And the mass ratio ((F) / (B)) of the content of component (F) to the content of component (B) is preferably from 0.01 to 0.7, more preferably from 0.03 to 0.6, and still more preferably from 0.05 to 0.5.

[0044] The mass ratio ((F) / (C)) of the content of component (F) to the content of component (C) is preferably 0.005 or more, more preferably 0.008 or more, still more preferably 0.01 or more, preferably 0.3 or less, more preferably 0.2 or less, and still more preferably 0.1 or less, from the viewpoint of effectively preventing the generation of carbon dioxide gas in the non-aqueous oral composition during storage or before use. And the mass ratio ((F) / (C)) of the content of component (F) to the content of component (C) is preferably from 0.005 to 0.3, more preferably from 0.008 to 0.2, and still more preferably from 0.01 to 0.1.

[0045] From the viewpoint of enhancing the abrasiveness, the non-aqueous oral composition of the present invention preferably further contains silicic anhydride. Specific examples of the silicic anhydride include, for example, abrasive silica such as fumed, porous, non-porous, or spherical, thickening silica, or silicic anhydride obtained by hydrophobizing these.

[0046] From the perspective of effectively enhancing the abrasiveness and effectively preventing the generation of carbon dioxide gas in the non-aqueous oral composition during storage or before use, the content of silicic anhydride in the non-aqueous oral composition of the present invention is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, still more preferably 1% by mass or more, preferably 6.9% by mass or less, more preferably 6.5% by mass or less, and still more preferably 6% by mass or less. And the content of silicic anhydride is preferably 0.1 to 6.9% by mass, more preferably 0.5 to 6.5% by mass, and still more preferably 1 to 6% by mass in the non-aqueous oral composition of the present invention.

[0047] On the other hand, from the perspective of effectively suppressing unnecessary reactions between component (B) and component (C) in the non-aqueous oral composition during production, storage or before use, preventing the generation of carbon dioxide gas, and ensuring good production stability and excellent storage stability, it is preferable to limit the content of silicic anhydride. The content of such silicic anhydride in the non-aqueous oral composition of the present invention is preferably less than 10% by mass, more preferably less than 7% by mass, still more preferably less than 5% by mass, even more preferably less than 4% by mass, and still more preferably less than 1% by mass. Or it is preferable that the non-aqueous oral composition of the present invention does not substantially contain silicic anhydride. Note that not substantially containing silicic anhydride means that the content of silicic anhydride in the oral composition is less than 0.1% by mass.

[0048] From the perspective of effectively suppressing unnecessary reactions between component (B) and component (C) in the non-aqueous oral composition during production, storage or before use, preventing the generation of carbon dioxide gas, ensuring good production stability and excellent storage stability, and ensuring a good foaming feeling, it is preferable to limit the content of a non-aqueous solvent having a relative permittivity of 10 or more at 25°C. Examples of the non-aqueous solvent having a relative permittivity of 10 or more at 25°C include, specifically, glycerin, polyethylene glycol, 1,3-butylene glycol, propylene glycol, dipropylene glycol, diglycerin, and the like. The content of the non-aqueous solvent having a relative permittivity of 10 or more at 25°C is preferably less than 18% by mass, more preferably 10% by mass or less, still more preferably 6% by mass or less, even more preferably 3% by mass or less, or the non-aqueous oral composition of the present invention preferably does not substantially contain a non-aqueous solvent having a relative permittivity of 10 or more at 25°C. Note that not substantially containing a non-aqueous solvent having a relative permittivity of 10 or more at 25°C means that the content of the non-aqueous solvent having a relative permittivity of 10 or more at 25°C in the oral composition is less than 1% by mass.

[0049] The non-aqueous oral composition of the present invention can contain, as components other than the above components, antibacterial agents, bactericides, medicinal components, fragrances, colorants, etc., as long as the effects of the present invention are not inhibited.

[0050] The non-aqueous oral composition of the present invention is filled in a deformable container, and by applying an external force or the like to the container, the non-aqueous oral composition as the content is discharged from the discharge port provided in the container and used. Such a container only needs to be provided with a discharge port, and its form is not particularly limited. Examples of the form of the container include a tube container having a container body and a cap portion having a discharge port, a spout container having a pouch container body, a squeeze-type container having a squeeze-deformable container body, and the like. Also, the material of the container is not particularly limited. For example, in the case of a tube container having a container body having a multilayered body portion, such a multilayered structure may include, in addition to the innermost layer made of polyethylene such as low-density polyethylene, a metallic layer such as aluminum, or a synthetic resin layer such as polypropylene or polyethylene terephthalate.

[0051] For any non-aqueous oral composition of the present invention filled in any container, since it has excellent storage stability, excessive swelling of the container during storage can be effectively prevented.

[0052] Regarding the above-described embodiments, the present invention further discloses the following non-aqueous oral compositions. [1] The following components (A) to (E): (A) A non-aqueous solvent having a relative permittivity at 25 °C of less than 10 and a melting point of 0 °C or lower (B) An acid that is solid at 25 °C (C) A carbonate (D) An oily gelling agent (E) A sugar alcohol that is solid at 25 °C A non-aqueous oral composition containing the same. [2] The relative permittivity of component (A) at 25 °C is preferably 5 or less, more preferably 3 or less, and the melting point of component (A) is preferably 0, more preferably -10 °C or lower. The non-aqueous oral composition of [1] above. [3] Component (A) is one or more selected from hydrocarbon oils, volatile silicone oils, and ester oils, hydrocarbon oils are preferred, one or two selected from liquid paraffin and squalane are more preferred, and liquid paraffin is even more preferred. The non-aqueous oral composition of [1] or [2] above. [4] The density of liquid paraffin at 15 °C is preferably 0.800 - 0.900 g / cm 3 and more preferably 0.820 - 0.890 g / cm 3 even more preferably 0.845 - 0.885 g / cm 3 even more preferably 0.860 - 0.880 g / cm 3 even more preferably 0.860 - 0.880 g / cm, and the viscosity at 37.8 °C is preferably 1 - 120 mm 2 / s, more preferably 10 - 100 mm 2 / s, even more preferably 37 - 95 mm 2 / s, even more preferably 40 - 90 mm 2 / s, even more preferably 74 - 88 mm 2The non-aqueous oral composition of the above [3], which is more preferably in / s. [5] The content of component (A) is preferably 15% by mass or more, more preferably 20% by mass or more, still more preferably 25% by mass or more, even more preferably 30% by mass or more, preferably 50% by mass or less, more preferably 45% by mass or less, still more preferably 41% by mass or less, and even more preferably 38% by mass or less. The non-aqueous oral composition according to any one of the above [1] to [4].

[0053] [6] Component (B) is preferably an organic acid or amino acid having 1 to 3 carboxy groups in the molecule and 4 to 6 carbon atoms, more preferably one or more selected from malic acid, citric acid, succinic acid, fumaric acid, tartaric acid, adipic acid, aspartic acid, glutamic acid, and pyroglutamic acid, still more preferably one or more selected from malic acid, citric acid, tartaric acid, and succinic acid, even more preferably one or two selected from malic acid and tartaric acid, and still more preferably malic acid. The non-aqueous oral composition according to any one of the above [1] to [5]. [7] The content of component (B) is preferably 6% by mass or more, more preferably 8% by mass or more, still more preferably 10% by mass or more, preferably 25% by mass or less, more preferably 22% by mass or less, and still more preferably 18% by mass or less. The non-aqueous oral composition according to any one of the above [1] to [6].

[0054] [8] Component (C) is preferably one or more selected from sodium bicarbonate, potassium bicarbonate, calcium bicarbonate, sodium carbonate, potassium carbonate, calcium carbonate, and magnesium carbonate, more preferably one or two selected from sodium bicarbonate and sodium carbonate, and still more preferably both sodium bicarbonate and sodium carbonate. The non-aqueous oral composition according to any one of the above [1] to [7]. [9] The content of sodium carbonate in 100% by mass of component (C) is preferably 10% by mass or more, more preferably 15% by mass or more, preferably 35% by mass or less, and more preferably 30% by mass or less, of the non-aqueous oral composition of [8] above.

[10] The content of component (C) is preferably 6% by mass or more, more preferably 8% by mass or more, still more preferably 10% by mass or more, preferably 35% by mass or less, more preferably 32% by mass or less, and still more preferably 30% by mass or less, of the non-aqueous oral composition according to any one of [1] to [9] above.

[11] The mass ratio ((B) / (C)) of the content of component (B) to the content of component (C) is preferably 0.3 or more, more preferably 0.4 or more, still more preferably 0.5 or more, preferably 1.1 or less, more preferably 1 or less, and still more preferably 0.9 or less, of the non-aqueous oral composition according to any one of [1] to

[10] above.

[12] The mass ratio ({(B)+(C)} / (A)) of the total content of component (B) and component (C) to the content of component (A) is preferably 0.2 or more, more preferably 0.3 or more, still more preferably 0.5 or more, preferably 3.5 or less, more preferably 2.5 or less, and still more preferably 2 or less, of the non-aqueous oral composition according to any one of [1] to

[11] above.

[0055]

[13] Component (D) is preferably one or more selected from fatty acids, fatty acid esters, or condensates of fatty acids, and more preferably dextrin fatty acid ester, of the non-aqueous oral composition according to any one of [1] to

[12] above.

[14] The content of component (D) is preferably 0.5% by mass or more, more preferably 0.7% by mass or more, still more preferably 1% by mass or more, preferably 5% by mass or less, more preferably 4% by mass or less, still more preferably 3% by mass or less, even more preferably 2.3% by mass or less, and still more preferably 1.8% by mass or less, of the non-aqueous oral composition according to any one of [1] to

[13] above.

[15] The mass ratio ((A) / (D)) of the content of component (A) to the content of component (D) is preferably 10 or more, more preferably 12 or more, still more preferably 15 or more, even more preferably 18 or more, and even more preferably 20.5 or more, and preferably 30 or less, more preferably 27 or less, and still more preferably 25 or less, of the non-aqueous oral composition according to any one of [1] to

[14] above.

[0056]

[16] The solubility of component (E) in water at 25 °C (the amount dissolved in 100% by mass of a saturated aqueous solution at 25 °C) is preferably 5% by mass or more, more preferably 8% by mass or more, still more preferably 12% by mass or more, even more preferably 20% by mass or more, and preferably 75% by mass or less, more preferably 65% by mass or less, and still more preferably 55% by mass or less, of the non-aqueous oral composition according to any one of [1] to

[15] above.

[17] Component (E) is preferably one or more selected from erythritol, mannitol, sorbitol, xylitol, and reduced palatinose (a mixture of α-D-glucopyranosyl-1,6-sorbitol and α-D-glucopyranosyl-1,6-mannitol), more preferably one or more selected from erythritol, xylitol, and mannitol, still more preferably one or two selected from erythritol and xylitol, and even more preferably erythritol, of the non-aqueous oral composition according to any one of [1] to

[16] above.

[18] The content of component (E) is preferably 2% by mass or more, more preferably 5% by mass or more, still more preferably 8% by mass or more, even more preferably 15% by mass or more, and preferably 45% by mass or less, more preferably 40% by mass or less, and still more preferably 35% by mass or less, of the non-aqueous oral composition according to any one of [1] to

[17] above.

[19] The mass ratio ((A) / (E)) of the content of component (A) to the content of component (E) is preferably 0.4 or more, more preferably 0.6 or more, still more preferably 0.8 or more, even more preferably 1 or more, preferably 15 or less, more preferably 8 or less, still more preferably 4 or less, and even more preferably 3.5 or less, of the non-aqueous oral composition according to any one of [1] to

[18] above.

[20] The mass ratio ((B) / (E)) of the content of component (B) to the content of component (E) is preferably 0.1 or more, more preferably 0.2 or more, still more preferably 0.3 or more, even more preferably 0.5 or more, preferably 5 or less, more preferably 2 or less, still more preferably 1.5 or less, and even more preferably 1 or less, of the non-aqueous oral composition according to any one of [1] to

[19] above.

[21] The mass ratio ((C) / (E)) of the content of component (C) to the content of component (E) is preferably 0.1 or more, more preferably 0.2 or more, still more preferably 0.3 or more, even more preferably 0.35 or more, preferably 8 or less, more preferably 3 or less, still more preferably 2.5 or less, and even more preferably 1.5 or less, of the non-aqueous oral composition according to any one of [1] to

[20] above.

[0057]

[22] Further, the non-aqueous oral composition according to any one of [1] to

[21] above contains one or more metal compounds (F) selected from zinc oxide, magnesium oxide, calcium oxide, aluminum oxide, titanium oxide, sodium sulfate, magnesium sulfate, calcium sulfate, calcium chloride, magnesium chloride, zinc chloride, magnesium silicate, and calcium silicate.

[23] Component (F) is preferably one or more selected from zinc oxide, magnesium oxide, and magnesium sulfate, and more preferably one or two selected from zinc oxide and magnesium oxide, of the non-aqueous oral composition according to

[22] above.

[24] The content of component (F) is preferably 0.5% by mass or more, more preferably 0.7% by mass or more, still more preferably 0.8% by mass or more, preferably 7% by mass or less, more preferably 5% by mass or less, and still more preferably 3% by mass or less, of the non-aqueous oral composition of

[22] or

[23] above.

[25] The mass ratio ((F) / (A)) of the content of component (F) to the content of component (A) is preferably 0.005 or more, more preferably 0.008 or more, still more preferably 0.01 or more, preferably 0.1 or less, more preferably 0.08 or less, and still more preferably 0.05 or less, of the non-aqueous oral composition of any one of

[22] to

[24] above.

[26] The mass ratio ((F) / (B)) of the content of component (F) to the content of component (B) is preferably 0.01 or more, more preferably 0.03 or more, still more preferably 0.05 or more, preferably 0.7 or less, more preferably 0.6 or less, and still more preferably 0.5 or less, of the non-aqueous oral composition of any one of

[22] to

[25] above.

[27] The mass ratio ((F) / (C)) of the content of component (F) to the content of component (C) is preferably 0.005 or more, more preferably 0.008 or more, still more preferably 0.01 or more, preferably 0.3 or less, more preferably 0.2 or less, and still more preferably 0.1 or less, of the non-aqueous oral composition of any one of

[22] to

[26] above.

[0058]

[28] The content of silicic anhydride is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, still more preferably 1% by mass or more, preferably 6.9% by mass or less, more preferably 6.5% by mass or less, and still more preferably 6% by mass or less, or preferably less than 10% by mass, more preferably less than 7% by mass, still more preferably less than 5% by mass, even more preferably less than 4% by mass, and still more preferably less than 1% by mass, or the non-aqueous oral composition of the present invention preferably does not substantially contain silicic anhydride, of the non-aqueous oral composition of any one of [1] to

[27] above.

[29] The content of the non-aqueous solvent having a relative permittivity of 10 or more at 25°C is preferably less than 18% by mass, more preferably 10% by mass or less, still more preferably 6% by mass or less, and even more preferably 3% by mass or less. Alternatively, the non-aqueous oral composition of the present invention preferably does not substantially contain a non-aqueous solvent having a relative permittivity of 10 or more at 25°C, and is any one of the non-aqueous oral compositions of [1] to

[28] above.

[30] The non-aqueous oral composition of any one of [1] to

[29] above, wherein component (B) and / or component (C) preferably does not have a coating layer.

Examples

[0059] Hereinafter, the present invention will be specifically described based on examples. Unless otherwise specified in the table, the content of each component is expressed in mass%.

[0060] [Examples 1 to 11, Comparative Examples 1 to 5] According to the formulations shown in Table 1, each non-aqueous oral composition was produced by a conventional method, and first, the production stability was evaluated according to the following method. For those with evaluation results of Z1 to Z3, since there were problems as products, other evaluations were not performed as appropriate. Next, each obtained non-aqueous oral composition was filled into a tube container (manufactured by Kyodo Printing Co., Ltd., 32φ aluminum / polyethylene tube, container for 100 g content), and then each evaluation was performed according to the following method. The results are shown in Table 1.

[0061] 《Evaluation of production stability》 When producing the non-aqueous oral composition, it was evaluated according to the following criteria. X: It could be produced without problems. Z1: The dispersibility of the contained components was poor and there was no shape retention. Z2: The reaction of the contained components proceeded during production and bubbles were generated. Z3: It partially liquefied and liquid separation occurred.

[0062] 《Evaluation of foaming feeling》 1 g of each non-aqueous oral composition was discharged from the tube container and placed on a toothbrush, and then brushing was performed for 2 minutes. The foaming sensation during such brushing was evaluated according to the following criteria. 5: Bubbles burst very pleasantly with a popping sound. 4: Bubbles burst pleasantly with a popping sound. 3: Bubbles burst with a somewhat popping sound. 2: Bubbles were palpable, but no popping sensation was felt. 1: Bubbles were not palpable.

[0063] 《Evaluation of oiliness》 1 g of each non-aqueous oral composition was discharged from the tube container and placed on a toothbrush, and then brushing was performed for 2 minutes. The oiliness during such brushing was evaluated according to the following criteria. 5: Not at all oily. 4: Not very oily. 3: Somewhat oily but within an acceptable range. 2: Oily but within an acceptable range. 1: Very oily.

[0064] 《Evaluation of refreshing feeling》 1 g of each non-aqueous oral composition was discharged from the tube container and placed on a toothbrush, and then brushing was performed for 2 minutes. The refreshing feeling brought about in the oral cavity after such brushing was evaluated according to the following criteria, using the degree of a refreshing touch as an index. 5: The mouth felt extremely refreshed. 4: The mouth felt refreshed. 3: The mouth felt somewhat refreshed. 2: The mouth did not feel very refreshed, but it was within an acceptable range. 1: The mouth did not feel refreshed.

[0065] 《Evaluation of storage stability》 After filling each non-aqueous oral composition into a tube container at room temperature (25°C) according to the following criteria, the degree of swelling of the container was visually evaluated until it was stored in a constant temperature bath at 50°C for the following predetermined period. In addition, photographs of the containers after storage in Example 1, Comparative Example 1 (swelling was confirmed 10 minutes after filling), and Comparative Example 2 (swelling was confirmed 1 hour after filling) are shown in Figure 1. 5: No swelling was confirmed until 1 month had passed since the start of storage. 4: No swelling was confirmed until 2 weeks had passed since the start of storage. 3: No swelling was confirmed until 1 week had passed since the start of storage. 2: Swelling was confirmed until 1 week had passed since the start of storage. 1: Swelling was confirmed on the day of filling the tube container, even before subjecting it to storage in the constant temperature bath.

[0066]

Table 1

Claims

1. The following components (A) to (E): (A) A non-aqueous solvent having a relative dielectric constant of less than 10 at 25°C and a melting point of 0°C or lower (B) An acid that is solid at 25°C (C) Carbonate (D) Oil-based gelling agent (E) Sugar alcohol that is solid at 25°C A non-aqueous oral composition comprising:

2. 2. The non-aqueous oral composition according to claim 1, wherein the solubility of component (E) in water at 25°C is 5% by mass or more and 75% by mass or less.

3. 3. The non-aqueous oral composition according to claim 1, wherein the mass ratio ((A) / (E)) of the content of component (A) to the content of component (E) is 0.4 or more and 5 or less.

4. 3. The non-aqueous oral composition according to claim 1, wherein the mass ratio ((A) / (D)) of the content of component (A) to the content of component (D) is 10 or more and 30 or less.

5. 3. The non-aqueous oral composition according to claim 1 or 2, wherein the mass ratio ({(B) + (C)} / (A)) of the total content of components (B) and (C) to the content of component (A) is 0.2 or more and 3.5 or less.

6. 3. The non-aqueous oral composition according to claim 1, wherein component (C) contains sodium bicarbonate and sodium carbonate.

7. 3. The non-aqueous oral composition according to claim 1 or 2, wherein the content of component (B) is 6% by mass or more and 25% by mass or less.

8. 3. The non-aqueous oral composition according to claim 1, wherein the content of anhydrous silicic acid is less than 7% by mass.

9. 3. The non-aqueous oral composition according to claim 1, wherein the content of the non-aqueous solvent having a relative dielectric constant of 10 or more at 25°C is less than 18% by mass.

10. The non-aqueous oral composition according to claim 1 or 2, further containing one or more metal compounds (F) selected from zinc oxide, magnesium oxide, calcium oxide, aluminum oxide, titanium oxide, sodium sulfate, magnesium sulfate, calcium sulfate, calcium chloride, magnesium chloride, zinc chloride, magnesium silicate, and calcium silicate.

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