Toothpaste composition

Abstract

To provide a dentifrice composition which has a low water content and contains menthol and sorbitol at a specific mass ratio, while exhibiting excellent discharge properties from a container and offering a favorable flavor sensation.SOLUTION: A dentifrice composition comprises the following components (A) to (D): (A) menthol, (B) sorbitol, (C) amphoteric surfactant, and (D) water in an amount of 10 mass% or more and 20 mass% or less, wherein the mass ratio of content of component (B) to content of component (A) ((B) / (A)) is 20 or more to 50 or less, and the mass ratio of content of component (C) to content of component (D) ((C) / (D)) is 0.0015 or more and 0.05 or less.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a dentifrice composition.

Background Art

[0002] Together with menthol, which is known to provide a cooling sensation and a good fragrance, various surfactants that can enhance the solubility or dispersibility of the components contained, and sugar alcohols such as sorbitol, which is also a humectant, are widely used in compositions for oral application and exhibit the desired effects.

[0003] For example, Patent Document 1 discloses an oral composition containing a nonionic surfactant, phenoxyethanol, ethanol, etc., and capable of containing menthol, aiming to improve the dirt removal effect. Further, Patent Document 2 discloses an oral composition containing a specific polymer, silica, water, and also l-menthol, attempting to maintain the formulation stability, etc. by improving the dispersibility.

[0004] Furthermore, Patent Document 3 discloses a dentifrice composition containing silicic anhydride, betaine-type amphoteric surfactant, l-menthol, and a specific menthyl ester in specific amounts, providing a feeling of thorough cleaning and a good feeling of use. And in any of the compositions described in these documents, it has been shown that they may also contain an amphoteric surfactant and sorbitol.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0006] Here, the inventors have focused on a new problem that arises when menthol and sorbitol coexist in a specific mass ratio in order to realize a toothpaste composition with a low water content: after low-temperature storage, the viscosity increases excessively, reducing the ability to dispense from the container. In other words, the inventors of this invention have newly noticed that none of the above-mentioned documents have focused on the fact that such problems occur, and that further investigation is needed to ensure a good flavor development of menthol.

[0007] Therefore, the present invention relates to a toothpaste composition that has a low water content, contains menthol and sorbitol in a specific mass ratio, yet exhibits excellent dispensing properties from a container and provides a good flavor. [Means for solving the problem]

[0008] Therefore, after various studies, the inventors have found that in a toothpaste composition with a low water content and containing menthol and sorbitol in a specific mass ratio, by further including an amphoteric surfactant in a specific mass ratio with water, it is possible to suppress the increase in viscosity after low-temperature storage, effectively prevent a decrease in dispensability from the container, and produce a good flavor derived from menthol.

[0009] In other words, the present invention comprises the following components (A) to (D): (A) Menthol (B) Sorbitol (C) Amphoteric surfactant (D) Water 10% by mass or more and 20% by mass or less The present invention provides a toothpaste composition that contains the following, wherein the mass ratio of the content of component (B) to the content of component (A) ((B) / (A)) is 20 or more and 50 or less, and the mass ratio of the content of component (C) to the content of component (D) ((C) / (D)) is 0.0015 or more and 0.05 or less. [Effects of the Invention]

[0010] According to the present invention, a toothpaste composition having a low water content (D) of 10% to 20% by mass, and containing sorbitol (B) and menthol (A) in a mass ratio ((B) / (A)) of 20 to 50, can effectively suppress excessive viscosity increase after low-temperature storage, ensure excellent dispensing from the container, and also exhibit good flavor development. [Modes for carrying out the invention]

[0011] The present invention will be described in detail below. Furthermore, "good flavor development" means that after application, the toothpaste composition spreads smoothly in the oral cavity without becoming unnecessarily uneven, and a pleasant sensation is obtained as the refreshing, cool feeling derived from menthol spreads well throughout the mouth.

[0012] The toothpaste composition of the present invention contains menthol as component (A). Component (A) is an ingredient that provides a pleasant flavor accompanied by a refreshing and comfortable feeling. The toothpaste composition of the present invention can suppress excessive viscosity increases even after low-temperature storage, and can spread smoothly and quickly in the oral cavity, exhibiting excellent flavor while providing a pleasant flavor derived from component (A).

[0013] From the viewpoint of suppressing viscosity increase after low-temperature storage while ensuring excellent flavor development, the content of component (A) in the toothpaste composition of the present invention is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, even more preferably 0.3% by mass or more, even more preferably 0.35% by mass or more, preferably 0.9% by mass or less, more preferably 0.85% by mass or less, even more preferably 0.8% by mass or less, and even more preferably 0.6% by mass or less. Furthermore, the content of component (A) in the toothpaste composition of the present invention is preferably 0.1% by mass or more and 0.9% by mass or less, more preferably 0.2% by mass or more and 0.85% by mass or less, even more preferably 0.3 to 0.8% by mass, and even more preferably 0.35 to 0.6% by mass.

[0014] The toothpaste composition of the present invention contains sorbitol as component (B). As described later, the inventors have found that toothpaste compositions containing such component (B), in which the water content of component (D) is low and the mass ratio of component (B) to component (A) is a specific ((B) / (A)), experience an increase in viscosity after low-temperature storage. Therefore, the present invention has found a toothpaste composition that can effectively suppress such an increase in viscosity.

[0015] The content of component (B) in the toothpaste composition of the present invention is preferably 10% by mass or more, more preferably 12% by mass or more, even more preferably 13% by mass or more, even more preferably 14% by mass or more, even more preferably 15% by mass or more, even more preferably 18% by mass or more, preferably 30% by mass or less, more preferably 28% by mass or less, even more preferably 25% by mass or less, even more preferably 24% by mass or less, and even more preferably 23% by mass or less. Furthermore, the content of component (B) in the toothpaste composition of the present invention is preferably 10 to 30% by mass, more preferably 12 to 28% by mass, even more preferably 13 to 25% by mass, even more preferably 14 to 25% by mass, even more preferably 15 to 24% by mass, and even more preferably 18 to 23% by mass.

[0016] In the toothpaste composition of the present invention, the mass ratio ((B) / (A)) of the content of component (B) to the content of component (A) is 20 or more and 50 or less. When the value of such mass ratio ((B) / (A)) is within this range, as described later, the low water content of component (D) may lead to an increase in viscosity after low-temperature storage, potentially reducing the ease of dispensing from the container. However, with the toothpaste composition of the present invention, this can be effectively suppressed while ensuring a good flavor derived from component (A). Therefore, the mass ratio ((B) / (A)) of the content of component (B) to the content of component (A) is 20 or more, may be 22 or more, may be 25 or more, may be 28 or more, may be 31 or more, may be 36 or more, and may be 50 or less, may be 48 or less, may be 46 or less, or may be 44 or less. Furthermore, the mass ratio ((B) / (A)) of the content of component (B) to the content of component (A) is 20 or more and 50 or less, and may be 22 to 48, 25 to 48, 28 to 48, 31 to 46, or 36 to 44.

[0017] The toothpaste composition of the present invention contains an amphoteric surfactant as component (C). As described later, by including such component (C) in a specific mass ratio with water as component (D), the increase in viscosity after low-temperature storage can be effectively suppressed, ensuring excellent dispensing from the container and effectively developing a good flavor. Specifically, such component (C) may include one or more selected from amide betaine-type amphoteric surfactants, imidazoline-type amphoteric surfactants, acetate betaine-type amphoteric surfactants, alkyl sulfobetaines, and amino acid-type amphoteric surfactants.

[0018] Examples of amidobetaine-type amphoteric surfactants include coconut oil fatty acid amidopropyl betaine and coconut oil fatty acid amide betaine. Examples of imidazoline - type amphoteric surfactants include, specifically, 2 - alkyl - N - carboxymethyl - N - hydroxyethylimidazolinium betaine, N - alkyl - 1 - hydroxyethylimidazoline betaine sodium, N - lauroyl - N'- carboxymethyl - N'- hydroxyethyl ethylenediamine sodium, N - cocoil - N - carboxymethyl - N - hydroxyethyl ethylenediamine sodium, etc. Examples of betaine acetate - type amphoteric surfactants include, specifically, lauryldimethylaminoacetate betaine, coconut oil fatty acid amidopropyldimethylaminoacetate betaine, etc. Examples of alkylsulfobetaines include, specifically, laurylsulfobetaine, laurylhydroxysulfobetaine, etc. Examples of amino acid - type amphoteric surfactants include, specifically, N - lauryldiaminoethyl glycine, N - myristyldiaminoethyl glycine, etc.

[0019] Among them, from the viewpoints of effectively suppressing the increase in viscosity after low - temperature storage and ensuring good flavor development, one or more selected from amide betaine - type amphoteric surfactants, imidazoline - type amphoteric surfactants, and betaine acetate - type amphoteric surfactants are preferred, one or more selected from amide betaine - type amphoteric surfactants and imidazoline - type amphoteric surfactants are more preferred, and amide betaine - type amphoteric surfactants are even more preferred.

[0020] The content of component (C) is preferably 0.03% by mass or more, more preferably 0.05% by mass or more, still more preferably 0.08% by mass or more, and even more preferably 0.1% by mass or more, and preferably 1% by mass or less, more preferably 0.8% by mass or less, still more preferably 0.6% by mass or less, and even more preferably 0.5% by mass or less, and even more preferably 0.4% by mass or less in the dentifrice composition of the present invention, from the viewpoint of maintaining the effect of suppressing the increase in viscosity after low-temperature storage while ensuring good solubility or dispersibility of the contained components. And the content of component (B) is preferably 0.03 to 1% by mass, more preferably 0.05 to 0.8% by mass, still more preferably 0.08 to 0.6% by mass, and even more preferably 0.1 to 0.5% by mass, and even more preferably 0.1 to 0.4% by mass in the dentifrice composition of the present invention.

[0021] In the dentifrice composition of the present invention, the water content of component (D) is 10% by mass or more and 20% by mass or less. In the dentifrice composition of the present invention, which has such a low water content, while the mass ratio ((B) / (A)) of component (B) to component (A) is within the above range, it is possible to effectively achieve both excellent dischargeability from the container and the expression of good flavor development.

[0022] The content of component (D) is 10% by mass or more in the dentifrice composition of the present invention, and may be 12% by mass or more, may be 13% by mass or more, may be 15% by mass or more, and 20% by mass or less, may be 19% by mass or less, may be 18% by mass or less, or may be 16% by mass or less.

[0023] Note that the water of component (D) in the present invention means all the water contained in the dentifrice composition, including not only purified water and the like blended in the dentifrice composition but also the moisture contained in each of the blended components. By containing such water, the above-mentioned respective components can be dissolved or dispersed well, and the desired effects can be fully exerted. The moisture content can be calculated from the total moisture content and the moisture content of the ingredients, but it can also be measured using a Karl Fischer moisture meter, for example. A Karl Fischer moisture meter, such as the Trace Moisture Meter (manufactured by Hiranuma Sangyo Co., Ltd.), can be used. This device allows for the measurement of moisture content by taking 5g of toothpaste composition, suspending it in 25g of anhydrous methanol, and then taking 0.02g of this suspension.

[0024] In the toothpaste composition of the present invention, the mass ratio ((C) / (D)) of the content of component (C) to the content of component (D) is 0.0015 or more and 0.05 or less. By having this mass ratio ((C) / (D)) within this range, viscosity increase after low-temperature storage is effectively suppressed, excellent dispensing from the container is achieved, and a good flavor is also produced. The mass ratio ((C) / (D)) of the content of component (C) to the content of component (D) is 0.0015 or more, preferably 0.003 or more, more preferably 0.004 or more, even more preferably 0.005 or more, even more preferably 0.007 or more, even more preferably 0.018 or more, even more preferably 0.025 or more, and 0.05 or less, preferably 0.045 or less, more preferably 0.04 or less, even more preferably 0.035 or less, and even more preferably 0.032 or less. Furthermore, the mass ratio ((C) / (D)) of the content of component (C) to the content of component (D) is 0.0015 or more and 0.05 or less, preferably 0.003 to 0.045, more preferably 0.004 to 0.04, even more preferably 0.005 to 0.035, even more preferably 0.007 to 0.032, and even more preferably 0.018 to 0.032, and even more preferably 0.025 to 0.032.

[0025] The toothpaste composition of the present invention preferably contains glycerin (E) in order to effectively achieve both excellent dispensing from the container and good flavor development. The content of such component (E) in the toothpaste composition of the present invention is preferably 3% by mass or more, more preferably 3.5% by mass or more, even more preferably 4% by mass or more, preferably 20% by mass or less, more preferably 19% by mass or less, and even more preferably 17% by mass or less. Furthermore, the content of component (E) in the toothpaste composition of the present invention is preferably 3% by mass or more and 20% by mass or less, more preferably 3.5 to 19% by mass, and even more preferably 4 to 17% by mass.

[0026] The toothpaste composition of the present invention may contain a binder (F) to the extent that it does not inhibit the effect of suppressing viscosity increase after low-temperature storage. Examples of such component (F) include polymer-based binders such as carboxyvinyl polymer and acrylic acid / (meth)acrylate alkyl copolymer; hydroxycellulose derivatives such as hydroxyethylcellulose, hydroxypropylcellulose, and hydroxypropyl methylcellulose; and one or more selected from carboxymethylcellulose, ethylcellulose, sodium alginate, carrageenan, xanthan gum, sodium polyacrylate, pectin, agar, tragacanth gum, gum arabic, guar gum, karaya gum, locust bean gum, gela gum, tamarid gum, psyllium seed gum, etc.

[0027] However, among the components (F), carboxymethylcellulose is preferably included in an appropriate amount from the viewpoint of achieving both the effect of suppressing viscosity increase after low-temperature storage and the development of good flavor. Specifically, the carboxymethylcellulose content is preferably 98% by mass or less, more preferably 95% by mass or less, even more preferably 90% by mass or less, preferably 20% by mass or more, more preferably 30% by mass or more, and even more preferably 40% by mass or more, based on 100% by mass of component (F).

[0028] On the other hand, among the components (F), it is preferable to limit the content of sodium alginate from the viewpoint of ensuring the effect of suppressing viscosity increase after low-temperature storage. Specifically, the content of sodium alginate in the toothpaste composition of the present invention is preferably 0.1% by mass or less, more preferably 0.08% by mass or less, even more preferably 0.05% by mass or less, and even more preferably 0.008% by mass or less, or it is preferable that the toothpaste composition of the present invention does not contain sodium alginate.

[0029] The total content of component (F) in the toothpaste composition of the present invention is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, even more preferably 0.25% by mass or more, preferably 1% by mass or less, more preferably 0.8% by mass or less, and even more preferably 0.7% by mass or less, from the viewpoint of not unnecessarily inhibiting the effect of suppressing viscosity increase after low-temperature storage. Furthermore, the total content of component (F) in the toothpaste composition of the present invention is preferably 0.1 to 1% by mass, more preferably 0.2 to 0.8% by mass, and even more preferably 0.25 to 0.7% by mass.

[0030] The toothpaste composition of the present invention may further contain erythritol (G) to ensure an effect of suppressing viscosity increase after low-temperature storage. The content of component (G) in the toothpaste composition of the present invention is preferably 25% by mass or more, more preferably 28% by mass or more, even more preferably 30% by mass or more, preferably 45% by mass or less, more preferably 43% by mass or less, even more preferably 42% by mass or less, and even more preferably 40% by mass or less. Furthermore, the content of component (G) in the toothpaste composition of the present invention is preferably 25% by mass or more and 45% by mass or less, more preferably 28-43% by mass, even more preferably 30-42% by mass, and even more preferably 30-40% by mass.

[0031] The toothpaste composition of the present invention may further contain one or more surfactants selected from anionic surfactants and nonionic surfactants, to the extent that they do not impair the effects of the present invention. Examples of anionic surfactants include, for example, fatty acid salts such as oleates and laurates; alkyl sulfates or their salts such as lauryl sulfate, myristyl sulfate, palmityl sulfate, stearyl sulfate, octyl sulfate, and caprylic sulfate; alkyl sulfonates such as alkylbenzene sulfonates, α-olefin sulfonates, and hydroxyalkane sulfonates; alkyl phosphates such as alkyl phosphates; fatty acid sulfonated monoglyceride salts and fatty acid ester salts of isethionic acid; polyoxyethylene monoalkyl phosphates; N-acyl amino acids, N-acyl taurines, and one or more selected from these salts. In particular, alkyl sulfate or its salt is preferred from the viewpoint of effectively achieving both excellent discharge from the container and good flavor development.

[0032] The alkyl group in such alkyl sulfate or its salt is preferably a linear or branched alkyl group having 6 to 30 carbon atoms, more preferably a linear or branched alkyl group having 8 to 24 carbon atoms, and preferably a linear or branched alkyl group having 8 to 18 carbon atoms. More specifically, examples include one or more selected from the lauryl group, myristyl group, palmityl group, stearyl group, octyl group, and decyl group. Among these, one or more selected from the lauryl group and myristyl group are preferred from the viewpoint of ensuring an effect of suppressing viscosity increase after low-temperature storage.

[0033] Nonionic surfactants that can be contained in the toothpaste composition of the present invention include one or more selected from polyoxyethylene hydrogenated castor oil; sucrose fatty acid esters; sorbitan fatty acid esters; glycerin fatty acid esters such as monostearate glyceride; alkyl glucosides; polyglycerin fatty acid esters such as monostearate decaglyceride and monomyristate decaglyceride; polyoxyethylene alkylphenyl ethers such as polyoxyethylene monoalkyl (or alkenyl) ethers, polyoxyethylene polyoxypropylene copolymers, and polyoxyethylene nonylphenyl ethers; fatty acid alkanolamides such as coconut oil fatty acid diethanolamide; and polyethylene glycol fatty acid esters.

[0034] The total amount of one or more surfactants selected from anionic surfactants and nonionic surfactants in the toothpaste composition of the present invention is preferably 0.3% by mass or more, more preferably 0.5% by mass or more, even more preferably 0.8% by mass or more, preferably 5% by mass or less, more preferably 4% by mass or less, and even more preferably 3% by mass or less. The total amount of surfactants in the toothpaste composition of the present invention is preferably 0.3 to 5% by mass, more preferably 0.5 to 4% by mass, and even more preferably 0.8 to 3% by mass.

[0035] The toothpaste composition of the present invention may further contain anhydrous silicic acid in order to ensure an effect of suppressing viscosity increase after low-temperature storage while maintaining appropriate shape retention. Preferably, the anhydrous silicic acid is one or more selected from thickening silica with an oil absorption capacity of 200 to 400 mL / 100 g and abrasive silica with an oil absorption capacity of 50 to 150 mL / 100 g. It is preferable to include two or more of these, and more preferably to include thickening silica and abrasive silica. The oil absorption capacity refers to the amount of oil that silica can support, and the measurement method is based on the amount of boiled flammable oil absorbed, as specified by JIS K5101-13-2 (established in 2004).

[0036] The content of anhydrous silicic acid in the toothpaste composition of the present invention is preferably 3% by mass or more, more preferably 5% by mass or more, even more preferably 8% by mass or more, preferably 30% by mass or less, more preferably 25% by mass or less, and even more preferably 20% by mass or less.

[0037] The toothpaste composition of the present invention preferably limits the ethanol content. Although trace amounts of ethanol may be present as derived from the raw materials of the constituent ingredients, the toothpaste composition of the present invention can achieve a good fragrance by limiting the ethanol content. The ethanol content in the toothpaste composition of the present invention is preferably 3% by mass or less, more preferably 2% by mass or less, even more preferably 1% by mass or less, and even more preferably 0.1% by mass or less, or it is preferable that the toothpaste composition of the present invention does not contain ethanol.

[0038] The toothpaste composition of the present invention may further contain, to the extent that it does not inhibit the effects of the present invention, other components besides the above-mentioned components, such as polyhydric alcohols other than component (E), such as propylene glycol and polyethylene glycol; sugar alcohols other than components (B) and (G), such as mannitol, xylitol, and maltitol; fluorides such as sodium fluoride and potassium fluoride; medicinal ingredients and other active ingredients such as tocopherol acetate, glycyrrhetinic acid, and cetylpyridinium chloride; fragrances other than component (A); sweeteners; colorants, etc.

[0039] The viscosity of the toothpaste composition of the present invention at 25°C is preferably 1000 dPa·s or more, more preferably 1500 dPa·s or more, even more preferably 2000 dPa·s or more, preferably 10000 dPa·s or less, more preferably 8000 dPa·s or less, and even more preferably 7000 dPa·s or less, from the viewpoint of suppressing viscosity fluctuations due to storage temperature and maintaining good dispensability. Furthermore, the viscosity of toothpaste composition (Y) at 25°C is preferably 1000 to 10000 dPa·s, more preferably 1500 to 8000 dPa·s, and even more preferably 2000 to 7000 dPa·s. The viscosity of the toothpaste composition refers to the value measured using a digital viscometer (TVB-10 viscometer, manufactured by Toki Sangyo Co., Ltd.) and a T-bar stage (TS-20, manufactured by Toki Sangyo Co., Ltd.) under the conditions of rotor TC, rotation speed of 2.5 rpm, and 1 minute.

[0040] Furthermore, according to the present invention, the usefulness as a method for suppressing viscosity increase in toothpaste compositions can also be enhanced. In other words, the method for suppressing the viscosity increase of such toothpaste composition is: The following components (A) to (D): (A) Menthol (B) Sorbitol (C) Amphoteric surfactant (D) Water 10% by mass or more and 20% by mass or less It contains, and the mass ratio of the content of component (B) to the content of component (A) ((B) / (A)) is 20 or more and 50 or less, This method involves setting the mass ratio ((C) / (D)) of the content of component (C) to the content of component (D) to be between 0.0015 and 0.05. This method ensures excellent dispensing from the container while also developing a good flavor in the toothpaste composition, and effectively suppresses excessive viscosity increases after low-temperature storage. [Examples]

[0041] The present invention will be described in detail below based on examples. Unless otherwise specified in the table, the content of each component is expressed in mass percent.

[0042] [Examples 1-11, Comparative Examples 1-3] Each toothpaste composition was prepared according to the formulations shown in Table 1. Then, the obtained toothpaste compositions were used for the following measurements and evaluations. The results are shown in Table 1.

[0043] Measurement of initial viscosity (after 1 day of storage) and viscosity after low-temperature storage, and calculation of viscosity increase rate due to low-temperature storage. After manufacturing, the toothpaste composition was placed in a container for viscosity measurement and stored in a 25°C incubator for one day. Then, the viscosity of the toothpaste composition in the container was measured using a digital viscometer (TVB-10 viscometer, manufactured by Toki Sangyo Co., Ltd.) and a T-bar stage (TS-20, manufactured by Toki Sangyo Co., Ltd.) under the conditions of rotor TC, rotation speed 2.5 rpm, and 1 minute, and this was defined as the initial viscosity (X). Next, after measuring the initial viscosity (X), the container was stored in a -5°C incubator for one month. Then, using the digital viscometer and T-bar stage described above, the viscosity of the toothpaste composition in the container was measured under the same conditions as above, and this was defined as the viscosity after low-temperature storage (Y). Based on the obtained initial viscosity (X) and viscosity after low-temperature storage (Y), the viscosity increase rate (Z) due to low-temperature storage was calculated using the following formula (1). Viscosity increase rate due to low-temperature storage (Z) = ((YX) / X) × 100 (%) ... (1)

[0044] Evaluation of dispensing performance from the container Three expert panelists evaluated the ease of dispensing the toothpaste composition after manufacturing. The toothpaste composition was placed in a tube container and stored in a -5°C incubator for one month. At 25°C, the ease of dispensing the toothpaste composition by pushing it 1 cm from the nozzle of the tube container was evaluated according to the following criteria, and the average value was used as the evaluation index. For the container, a Φ40 115g capacity tube container (manufactured by Kyodo Printing Co., Ltd.) was used. 5: Very easy to dispense 4: Somewhat easy to dispense 3: It's not exactly hard, but it's not easy to dispense either. 2: It feels slightly hard and is a little difficult to dispense. 1: Hard and difficult to dispense.

[0045] 《Evaluation of aroma and flavor》 The resulting toothpaste composition was placed at a rate of 1g on a toothbrush and brushed for 2 minutes. Three expert panelists evaluated the flavor profile in the oral cavity from the start to the end of the brushing process according to the following criteria, and the average value was calculated. 5: You can really feel the spread of flavors. 4: You can feel the spread of flavor. 3: I can sense a slight expansion of flavor. 2: I don't really feel the breadth of flavor. 1: I don't feel any expansion of flavor at all.

[0046] [Table 1]

Claims

1. The following components (A) to (D) and (F): (A) Menthol (B) Sorbitol (C) Amphoteric surfactant (D) Water 10% by mass or more and 20% by mass or less (F) Binder: 0.1% by mass or more and 1% by mass or less A toothpaste composition containing the following, wherein the content of carboxymethylcellulose is 98% by mass or less out of 100% by mass of component (F), the mass ratio of the content of component (B) to the content of component (A) ((B) / (A)) is 20 or more and 50 or less, and the mass ratio of the content of component (C) to the content of component (D) ((C) / (D)) is 0.0015 or more and 0.05 or less.

2. The toothpaste composition according to claim 1, wherein the content of component (A) is 0.1% by mass or more and 0.9% by mass or less.

3. Furthermore, the toothpaste composition according to claim 1 or 2 contains 3% by mass or more and 20% by mass or less of glycerin (E).

4. The toothpaste composition according to claim 1 or 2, wherein component (C) is one or more selected from amide betaine type amphoteric surfactants, imidazoline type amphoteric surfactants, acetate betaine type amphoteric surfactants, and amino acid type amphoteric surfactants.

5. The following components (A) to (D) and (G): (A) Menthol (B) Sorbitol (C) Amphoteric surfactant (D) Water 10% by mass or more and 20% by mass or less (G) Erythritol 25% by mass or more and 45% by mass or less A toothpaste composition containing the following, wherein the mass ratio of the content of component (B) to the content of component (A) ((B) / (A)) is 20 or more and 50 or less, and the mass ratio of the content of component (C) to the content of component (D) ((C) / (D)) is 0.0015 or more and 0.05 or less.

6. The following components (A) to (D) and (F): (A) Menthol (B) Sorbitol (C) Amphoteric surfactant (D) Water 10% by mass or more and 20% by mass or less (F) Binder: 0.1% by mass or more and 1% by mass or less It contains carboxymethylcellulose, the carboxymethylcellulose content is 98% by mass or less of 100% by mass of component (F), the mass ratio of the content of component (B) to the content of component (A) ((B) / (A)) is 20 or more and 50 or less, and A method for suppressing viscosity increase in a toothpaste composition, wherein the mass ratio ((C) / (D)) of the content of component (C) to the content of component (D) is 0.0015 or more and 0.05 or less.

7. The following components (A) to (D) and (G): (A) Menthol (B) Sorbitol (C) Amphoteric surfactant (D) Water 10% by mass or more and 20% by mass or less (G) Erythritol 25% by mass or more and 45% by mass or less It contains, and the mass ratio of the content of component (B) to the content of component (A) ((B) / (A)) is 20 or more and 50 or less, A method for suppressing viscosity increase in a toothpaste composition, wherein the mass ratio ((C) / (D)) of the content of component (C) to the content of component (D) is 0.0015 or more and 0.05 or less.

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