JP2019001741A - Liquid oral composition in foam discharge container - Google Patents

Abstract

To provide liquid oral composition in a foam discharge container in which clogging is suppressed even at low temperature while retaining excellent foam quality, and which have excellent dischargeability and storage stability.SOLUTION: The present invention provides a liquid oral composition in a foam discharge container containing the following component (A), (B), (C), and (D): (A) 0.1 to 2.0 mass% of an anionic surfactant; (B) 0.1 to 2.0 mass% of an ampholytic surfactant; (C) 0.1 to 2.0 mass% of one or two selected from polysaccharide system natural polymer or nonionic semi-synthetic polymer having a viscosity in 1 mass% of an aqueous solution at 25°C of 3 mPa s or more to less than 100 mPa s; and (D) water, the content of an abrasive powder being 0.5 mass% or less.SELECTED DRAWING: None

Description

  The present invention relates to a liquid oral cavity composition containing a foam discharge container.

2. Description of the Related Art Conventionally, a composition for oral cavity that fills a container capable of discharging contents in a foam form and exhibits desired performance in order to be applied in a foam form from the discharge port to the oral cavity at the time of use is known. ing.
For example, Patent Document 1 discloses a foamed oral composition containing a surfactant and a binder obtained by combining two high-molecular compounds having specific viscosities and filled in a non-gas atmospheric container. It is described that it is excellent in the uniformity of the foam, the shape retention of the foam in the oral cavity, the feeling of use is excellent, and the oral dispersibility is excellent.
Patent Document 2 includes an anionic surfactant, a nonionic surfactant or an amphoteric surfactant, a thickener or a binder, and the like for a foamy oral cavity filled in a non-gas atmospheric container. It is described that the composition forms good foam, the foam persists and enhances dispersibility in the oral cavity.

Japanese Patent Laid-Open No. 9-295923 JP-A-8-333226

  However, conventional foamy oral compositions have not been fully satisfactory in terms of dischargeability at low temperatures and storage stability, such as clogging at low temperatures.

  The inventor uses an anionic surfactant and an amphoteric surfactant in combination, and a specific polymer compound is used in combination at a specific ratio, so that clogging is suppressed even at a low temperature while ensuring good foam quality. The present inventors have found that a liquid oral cavity composition containing a foam discharge container excellent in dischargeability and storage stability can be obtained.

The following components (A), (B), (C) and (D):
(A) Anionic surfactant 0.1-2.0% by mass,
(B) Amphoteric surfactant 0.1-2.0% by mass,
(C) One or two kinds selected from polysaccharide-based natural polymers or nonionic semi-synthetic polymers whose viscosity at 25 ° C of a 1 mass% aqueous solution is 3 mPa · s or more and less than 100 mPa · s 0.1-2. 0% by mass,
(D) It is related with the liquid oral cavity composition containing a foam discharge container which contains water and content of abrasive powder is 0.5 mass% or less.

  The composition for liquid oral cavity of the foam discharge container of the present invention has excellent foam formed, the foam is sustained in the oral cavity and excellent in feeling of use, and the clogging of the container is suppressed even at a low temperature, and the viscosity is increased at a low temperature. It also has excellent suppression and ejection properties.

Hereinafter, the present invention will be described in detail.
The liquid oral cavity composition containing a foam discharge container of the present invention contains 0.1% by mass or more and 2.0% by mass or less of an anionic surfactant as the component (A). Thereby, a favorable foam can be formed and the usability | use_condition of the outstanding composition can be brought about.

Component (A) anionic surfactants include alkyl sulfates such as lauryl sulfate and myristyl sulfate; alkyl phosphates such as lauryl phosphate; α-olefins having 14 to 16 carbon atoms of olefins ( C14-16) Sulfonates; N-lauroyl sarcosine salts, acyl sarcosine salts such as N-myristoyl sarcosine salts; N-methyl acyl taurine salts such as N-lauroyl methyl taurine salts and N-myristoyl methyl taurine salts; N-lauroyl N-acyl taurine salts such as taurine salt and N-myristoyl taurine salt; N-acyl glutamate such as N-lauroyl glutamate, N-myristoyl glutamate, N-palmitoyl glutamate, N-cocoyl glutamate .
Among these, from the viewpoint of forming good bubbles and providing an excellent feeling of use of the composition, alkyl sulfate salts are preferable, and lauryl sulfate salts are more preferable.
Moreover, as these salts, sodium and potassium are preferable.

A component (A) can use 1 type (s) or 2 or more types.
The content of the component (A) is 0.1% by mass or more in the liquid oral composition from the viewpoint of forming good foam and providing an excellent feeling of use of the composition, and preferably is 0.1%. It is 15 mass% or more, More preferably, it is 0.2 mass% or more. In addition, the content of the component (A) is 2.0% by mass or less in the liquid oral composition from the viewpoint of suppressing clogging of the container even at a low temperature and ensuring good discharge properties at a low temperature. Thus, it is preferably 1.0% by mass or less, and more preferably 0.5% by mass or less. And content of a component (A) is 0.1 to 2.0 mass% in a liquid oral cavity composition, Preferably it is 0.15-1.0 mass%, More preferably Is 0.2-0.5 mass%.

  The liquid oral cavity composition containing a foam discharge container of the present invention contains 0.1% by mass or more and 2.0% by mass or less of an amphoteric surfactant as the component (B). By using the component (B) in combination with the component (A), a more favorable foam is formed, and the foam persists in the oral cavity and has good foam retention, and excellent discharge properties at low temperatures can be ensured. .

Component (B) amphoteric surfactants include betaine acetate such as lauryldimethylaminoacetic acid betaine; imidazolinium betaine such as 2-alkyl-N-carboxymethyl-N-hydroxyethyl-N-imidazolium betaine; lauryl sulfone Examples include alkylsulfobetaines such as betaine and laurylhydroxysulfobetaine; coconut oil fatty acid amide alkylbetaines such as coconut oil fatty acid amidepropylbetaine; and long-chain alkylimidazoline betaine salts such as sodium N-alkyl-1-hydroxyethylimidazoline betaine. .
Of these, coconut oil fatty acid amide alkylbetaine is preferred, and coconut having an alkyl carbon number of 2 to 5 from the viewpoints of good foam formation, long-lasting foam retention in the oral cavity, and excellent discharge properties at low temperatures. Oil fatty acid amidoalkyl betaines are more preferred, and coconut oil fatty acid amidopropyl betaines are more preferred.

A component (B) can use 1 type (s) or 2 or more types.
The content of the component (B) is 0.1% by mass or more in the liquid oral composition from the viewpoint of good foam formation, sustained foam retention in the oral cavity, and excellent discharge properties at low temperatures. It is preferably 0.15% by mass or more, more preferably 0.2% by mass or more. In addition, the content of the component (B) is 2.0 mass in the liquid oral composition from the viewpoint of good foam formation, sustained foam retention in the oral cavity, and excellent low-temperature ejection properties. % Or less, preferably 1.5% by mass or less, and more preferably 1.0% by mass or less. And content of a component (B) is 0.1 to 2.0 mass% in a liquid oral cavity composition, Preferably it is 0.15-1.5 mass%, More Preferably it is 0.2-1.0 mass%.

  In the present invention, the mass ratio {(A) / (B)} of the component (A) and the component (B) is preferably 0.1 from the viewpoint of good foam formation and sustained foam retention in the oral cavity. It is above, More preferably, it is 0.3 or more, More preferably, it is 0.5 or more. In addition, the mass ratio {(A) / (B)} of the component (A) and the component (B) is good in terms of foam formation, sustained foam retention in the oral cavity, and excellent discharge properties at low temperatures. Therefore, it is preferably 3.0 or less, more preferably 2.0 or less, and still more preferably 0.8 or less. And mass ratio {(A) / (B)} of a component (A) and a component (B) becomes like this. Preferably it is 0.1-3.0, More preferably, it is 0.3-2.0. Yes, more preferably 0.5 to 0.8.

  Further, in the present invention, the total content {(A) + (B)} of the component (A) and the component (B) is used for a liquid oral cavity from the viewpoint of good foam formation and sustained foam retention in the oral cavity. In the composition, it is preferably 0.2% by mass or more, more preferably 0.3% by mass or more, and further preferably 0.4% by mass or more. Moreover, the total content {(A) + (B)} of the component (A) and the component (B) is included in the liquid oral composition from the viewpoint of excellent discharge properties at a low temperature and the harmfulness of the composition. Preferably, it is 3.0 mass% or less, More preferably, it is 1.5 mass% or less, More preferably, it is 0.9 mass% or less. The total content {(A) + (B)} of the component (A) and the component (B) is preferably 0.2% by mass or more and 3.0% by mass or less in the liquid oral composition. More preferably, it is 0.3-1.5 mass%, More preferably, it is 0.4-0.9 mass%.

  It is preferable that the liquid oral cavity composition containing a foam discharge container of the present invention further contains a nonionic surfactant. By containing a nonionic surfactant, good foam is formed together with the above components (A) and (B), effectively maintaining foam retention in the oral cavity, and excellent discharge properties at low temperatures. Can be increased.

Nonionic surfactants include, for example, polyoxyethylene hydrogenated castor oil, sucrose fatty acid ester, sorbitan fatty acid ester, glycerin fatty acid ester, polyglycerin fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbit fatty acid ester, polyoxy Fatty acid esters such as ethylene glycerin fatty acid ester and polyethylene glycol fatty acid ester; polyoxyethylene phytosterol, polyoxyethylene phytostanol, polyoxyethylene lanolin, polyoxyethylene lanolin alcohol, polyoxyethylene alkylamine, polyoxyethylene fatty acid amide, poly Oxyethylene alkylphenyl formaldehyde condensate, polyoxyethylene alkyl ether, polio Shi polyoxypropylene alkyl ethers, polyoxyethylene polyoxypropylene copolymers, polyoxyethylene alkyl phenyl ethers, polyoxyethylene fatty acid ethanol amides.
Of these, polyoxyethylene hydrogenated castor oil and polyglycerin fatty acid ester are preferable, and polyoxyethylene hydrogenated castor oil is more preferable, from the viewpoints of persistence of foam in the oral cavity and excellent discharge properties at low temperatures.

1 type (s) or 2 or more types can be used for a nonionic surfactant.
The content of the nonionic surfactant is preferably 0.1% by mass or more in the liquid oral composition from the viewpoint of maintaining foam retention in the oral cavity and excellent discharge at low temperatures, More preferably, it is 0.2 mass% or more, More preferably, it is 0.3 mass% or more. In addition, the content of the nonionic surfactant is preferably 3.0% by mass or less in the liquid oral composition from the viewpoint of persistence of foam in the oral cavity and excellent discharge properties at low temperatures. More preferably, it is 1.5 mass% or less, More preferably, it is 0.8 mass% or less. The nonionic surfactant content in the liquid oral composition is preferably 0.1% by mass or more and 3.0% by mass or less, more preferably 0.2 to 1.5% by mass. More preferably, it is 0.3-0.8 mass%.

  The total content of the component (A), the component (B) and the nonionic surfactant is 0.5 mass in the liquid oral composition from the viewpoint of good foam formation and sustained foam retention in the oral cavity. % Or more is preferable, 0.7 mass% or more is more preferable, and 1.1 mass% or more is more preferable. In addition, the total content of the component (A), the component (B) and the nonionic surfactant is preferably 5.0% by mass or less in the liquid oral composition from the viewpoint of excellent dischargeability at a low temperature. 4.0 mass% or less is more preferable, and 3.0 mass% or less is further more preferable. The total content of the component (A), the component (B) and the nonionic surfactant is preferably 0.5 to 5.0 mass% in the liquid oral composition, and 0.7 to 4.0 mass. % Is more preferable, and 1.1 to 3.0% by mass is more preferable.

The liquid oral cavity composition containing a foam discharge container according to the present invention is a polysaccharide natural polymer or nonionic semi-synthetic composition having a viscosity of 3% by mass or more and less than 100 mPa · s in a 1% by mass aqueous solution as component (C). 1 type or 2 types chosen from polymer | macromolecule are contained 0.1 mass% or more and 2.0 mass% or less. Such component (C), when combined with component (A) and component (B), maintains good foam in the oral cavity and suppresses clogging of the container at low temperatures while forming good foam. it can. The viscosity at 25 ° C. of these 1% by mass aqueous solutions is preferably 5 mPa · s to 80 mPa · s from the viewpoints of good foam formation, sustained foam retention in the oral cavity, and excellent low-temperature ejection properties. 10 mPa · s to 50 mPa · s is more preferable.
Here, a 1 mass% aqueous solution was prepared for the viscosity, and a BL viscometer (manufactured by Toki Sangyo Co., Ltd., M1 rotor, rotation speed: 12 to 30 rpm / 1 minute) was used at room temperature (25 ° C.). It is determined by measuring the liquid viscosity (mPa · s).

  Examples of polysaccharide-based natural polymers having a viscosity at 25 ° C. of 1% by weight aqueous solution used as component (C) of 3 mPa · s or more and less than 100 mPa · s include pullulan, pectin, and guar gum, and good foam formation Pullulan and pectin are preferable, and pullulan is more preferable from the viewpoints of persistence of foam in the oral cavity and excellent discharge at low temperatures.

  The pullulan used as the component (C) is a water-soluble polysaccharide in which maltotriose is regularly α-1,6-linked, and gives a good thickness to the liquid oral composition while being good in the oral cavity. It ensures diffusibility and acts as a moisturizing component. Such pullulan is preferably contained in a dissolved state in the liquid oral composition of the present invention, and is preferably not processed into particles or capsules.

  Examples of the nonionic semi-synthetic polymer having a viscosity at 25 ° C. of 1% by mass aqueous solution used as component (C) of 3 mPa · s or more and less than 100 mPa · s include hydroxyethyl cellulose, hydroxypropyl cellulose, and methyl cellulose. Hydroxyalkyl celluloses such as hydroxyethyl cellulose and hydroxypropyl cellulose having a mass average molecular weight of 50,000 to 700,000 are preferred from the viewpoints of good foam formation, sustained foam retention in the oral cavity, and excellent discharge properties at low temperatures.

The mass average molecular weight (Mw) of the component (C) is preferably 50,000 or more, more preferably from the viewpoint of good foam formation, long-lasting foam retention in the oral cavity, and excellent discharge properties at low temperatures. Is 100,000 or more, more preferably 150,000 or more. The mass average molecular weight (Mw) of the component (C) is preferably 700,000 or less, more preferably 600,000 or less, and still more preferably, from the viewpoint of suppressing the formation of good foam and increasing the viscosity at low temperatures. 400,000 or less. Moreover, the mass average molecular weight (Mw) of a component (C) becomes like this. Preferably it is 50,000-700,000, More preferably, it is 100,000-600,000, More preferably, it is 150,000-400,000.
The mass average molecular weight (Mw) can be determined by the GPC method (gel filtration chromatography method).
As a commercial product of hydroxyalkyl cellulose having such a mass average molecular weight (Mw), hydroxypropylcellulose includes HPC-M (Mw = 620,000) manufactured by Nippon Soda Co., Ltd., and hydroxyethylcellulose manufactured by Daicel Corporation. HEC Daicel SE400 (Mw = 250,000).

As the component (C), one type or two or more types can be used.
The content of the component (C) is 0.1% by mass or more in the liquid oral composition from the viewpoints of good foam formation, sustained foam retention in the oral cavity, and excellent discharge properties at low temperatures. And, 0.15 mass% or more is preferable, and 0.2 mass% or more is more preferable. Moreover, content of a component (C) is 2.0 mass% or less in a liquid oral cavity composition from a viewpoint of the viscosity raise suppression at low temperature, and the discharge property at low temperature, and 1.0 mass% The following is preferable, 0.8% by mass or less is more preferable, and 0.45 or less is more preferable. And content of a component (C) is 0.1-2.0 mass% in a liquid oral cavity composition, 0.15-1.0 mass% is preferable, 0.2-0.8 The mass% is more preferable, and 0.2 to 0.45 is more preferable.

  In the present invention, the mass ratio {(B) / (C)} of the component (B) and the component (C) is good in terms of foam formation, low viscosity increase suppression, and excellent low temperature ejection properties. Therefore, it is preferably 0.3 or more, more preferably 0.5 or more, and further preferably 0.7 or more. Further, the mass ratio {(B) / (C)} of the component (B) and the component (C) is preferably from the viewpoints of good foam formation, persistence of foam in the oral cavity, and drainage. It is 3.0 or less, More preferably, it is 2.0 or less, More preferably, it is 1.5 or less. And mass ratio {(B) / (C)} of a component (B) and a component (C) becomes like this. Preferably it is 0.3-3.0, More preferably, it is 0.5-2.0. Yes, more preferably 0.7 to 1.5.

  In the present invention, the total content of the component (A) and the component (B) and the mass ratio {(A) + (B)} / (C) of the component (C) is good foam formation, low temperature viscosity. From the viewpoint of stability and excellent suppression of increase in viscosity at low temperature, it is preferably 0.8 or more, more preferably 1.2 or more, and still more preferably 1.7 or more. Moreover, the total content of the component (A) and the component (B) and the mass ratio of the component (C) {(A) + (B)} / (C) is good foam formation, foam retention in the oral cavity. From the viewpoint of the maintenance of the liquid and drainage, it is preferably 4.0 or less, more preferably 3.0 or less, and still more preferably 2.2 or less. The mass ratio {(A) + (B)} / (C) of the total content of the component (A) and the component (B) and the component (C) is preferably 0.8 or more and 4.0 or less. More preferably, it is 1.2-3.0, More preferably, it is 1.7-2.2.

The water of component (D) in the present invention is contained in the liquid oral composition containing not only purified water and ion exchange water blended in the liquid oral composition, but also water contained in each blended component. Means the total water content.
The water content of the component (D) is preferably 35% by mass or more in the liquid oral composition from the viewpoint that good foam is formed, the foam persists in the oral cavity, and the usability is excellent. More preferably, it is more preferably at least 60% by mass. In addition, the water content of the component (C) is such that the foam is maintained in the oral cavity and the usability is excellent, and the clogging of the container is suppressed even at a low temperature, and from the viewpoint of ensuring the discharge property at a low temperature. In the composition for oral cavity, 99 mass% or less is preferable, 95 mass% or less is more preferable, and 90 mass% or less is further more preferable.

In the liquid oral cavity composition containing a foam discharge container of the present invention, the content of the abrasive powder is 0.5% by mass or less. By limiting the content of the abrasive powder in this way, it is possible to effectively enhance the storage stability at a low temperature while ensuring good dischargeability from the container.
Examples of the abrasive powder include light calcium carbonate, heavy calcium carbonate, zeolite, abrasive silica having an oil absorption of 50 to 150 mL / 100 g, dicalcium phosphate, tricalcium phosphate, insoluble sodium metaphosphate, aluminum hydroxide. 1 type (s) or 2 or more types chosen from magnesium phosphate, calcium pyrophosphate, magnesium carbonate, etc. are mentioned.
The amount of oil absorption indicates the amount of oil that can be supported by silica, and the measuring method is specified by the method based on JIS K5101-13-2 (established in 2004) and specified by the amount of oil that is absorbed in the boiled sea bream. To do.

  The content of the abrasive powder is 0.5 mass in the liquid oral cavity composition containing the foam discharge container of the present invention from the viewpoint of ensuring low-temperature storage stability while ensuring good discharge properties from the container. % Or less, preferably 0.4% by mass or less, more preferably 0.3% by mass or less, or preferably no abrasive powder.

The liquid oral cavity composition containing a foam discharge container of the present invention preferably has an ethanol content of 3% by mass or less. By limiting the ethanol content in this way, it effectively suppresses the increase in viscosity at low temperatures and prevents excessive increase in the pressing force of the foam discharge container at low temperatures to ensure good discharge from the container. can do.
From the viewpoint of suppressing the increase in viscosity at low temperature and preventing excessive increase in the pressing force of the foam discharge container at low temperature, the content of ethanol is included in the liquid oral cavity composition containing the foam discharge container of the present invention. From the viewpoint of preventing the discharge performance from being reduced every time the product is repeatedly used and stored, it is preferably 2.5% by mass or less, more preferably 2.0% by mass or less. Yes, more preferably 1.0% by mass or less, or it is preferable that the liquid oral cavity composition containing a foam discharge container of the present invention does not contain ethanol.

The liquid oral cavity composition containing a foam discharge container of the present invention preferably further contains (E) glycerin from the viewpoint of forming good foam.
The content of the glycerin of component (E) is preferably 3% by mass or more in the liquid oral composition from the viewpoint that good foam is formed, the foam is sustained in the oral cavity, and the usability is excellent. More preferably, it is more preferably 7% by mass or more. In addition, the content of glycerin as component (D) is preferably 40% by mass or less, more preferably 30% by mass or less, and even more preferably 25% by mass or less in the liquid oral composition from the viewpoint of excellent usability. . And 3-40 mass% is preferable in a liquid oral composition, as for content of the glycerol of a component (E), 5-30 mass% is more preferable, and 7-25 mass% is further more preferable.

  In the present invention, the mass ratio {(E) / (C)} of the component (E) and the component (C) is good in terms of foam formation, low-temperature viscosity increase suppression, and excellent low-temperature ejection properties. Therefore, it is preferably 5 or more, more preferably 16 or more, and further preferably 22 or more. Further, the mass ratio {(E) / (C)} of the component (E) and the component (C) is preferably from the viewpoint of good foam formation, persistence of foam in the oral cavity, and drainage. It is 50 or less, More preferably, it is 35 or less, More preferably, it is 30 or less. And mass ratio {(E) / (C)} of a component (E) and a component (C) becomes like this. Preferably it is 5-50, More preferably, it is 16-35, More preferably, 22-30 It is.

The liquid oral cavity composition containing a foam discharge container of the present invention preferably further contains propylene glycol from the viewpoint of forming good foam, and more preferably used in combination with the above-described glycerin.
The content of propylene glycol is preferably 1.0% by mass or more in the liquid oral composition from the viewpoints of formation of good foam, suppression of increase in viscosity at low temperature, and excellent dischargeability at low temperature. 0.0 mass% or more is more preferable, and 3.0 mass% or more is further more preferable. In addition, the content of propylene glycol is preferably 15.0% by mass or less in the liquid oral composition from the viewpoint that good foam is formed, the foam persists in the oral cavity, and the usability is excellent. 0.0 mass% or less is more preferable, and 8.0 mass% or less is more preferable. The content of propylene glycol in the liquid oral composition is preferably 1.0 to 15.0 mass%, more preferably 2.0 to 12.0 mass%, and 3.0 to 8.0 mass%. % Is more preferable.

  In addition to the above, the liquid oral cavity composition in the foam discharge container of the present invention is a component used in an ordinary liquid oral cavity composition, for example, polyols other than those described above, bactericides, oily ingredients, fragrances, preservatives, medicinal agents , PH adjusters, pigments, dyes and the like can be appropriately contained.

The liquid oral cavity composition containing a foam discharge container according to the present invention is a liquid oral composition prepared by mixing the components (A), (B), (C) and (D). It is a thing filled with a foam discharge container provided with.
When using the liquid oral cavity composition containing the foam discharge container of the present invention, the liquid oral composition as a content is directly discharged into the oral cavity from the discharge opening provided in the foam discharge container. The liquid composition for oral cavity is applied to the oral cavity in the form of foam. As a result, it is possible to spread the liquid oral composition to every corner of the oral cavity while providing an excellent feeling of use by providing a good foam quality, which is also useful as a liquid liquid oral composition. It is a highly composition.

  The foam discharge container filled with the liquid oral composition may be anything provided with a discharge port, and may be a non-aerosol type container or an aerosol type container.

  Non-aerosol type containers are atmospheric pressure containers that do not require a propellant such as compressed gas. Examples of such containers include squeeze type containers and pump type containers. These containers have a viewpoint of forming a foamy composition satisfactorily when the contents pass through the discharge port, and the formed foam has good retention and homogeneity, and enhances the feeling of use, etc. From this point of view, it is preferable that any of these is a container in which a porous member provided with a mesh or a plurality of small holes is interposed in the flow path of the contents from the container main body to the discharge port.

  A squeeze-type container is a squeeze-deformed body that is located in a deformable container body, which mixes the air and contents pumped from the headspace while passing through a porous member as necessary. Bubbles are formed, and the bubbles are discharged from the discharge port. Specifically, for example, containers described in JP-A-7-215352, JP-A 58-174272, and JP-A 62-42787 can be used.

  A pump type container is a foam that mixes air and contents flowing in from the outside while passing through a porous member as needed by pushing a pump head provided in a foam discharger having a discharge port. And the bubbles are discharged from the discharge port. Usually, an air cylinder for allowing air to flow in from the outside and a liquid cylinder serving as a flow path for the contents are provided, and a mixing chamber for mixing the air and the contents that are pumped by the pump head being pushed in. Specifically, for example, containers described in JP-A-7-315463, JP-A-8-230961, and JP-A-3-7963 can be used.

  An aerosol-type container is a container filled with compressed gas as a propellant. When the contents are discharged from the discharge port, bubbles are formed while taking in the gas through the valve mechanism. The compressed gas to be used is preferably a gas containing 90% by mass or more of carbon dioxide gas.

  As the foam discharge container used in the present invention, a squeeze container is preferable from the viewpoint of usability, that is, from the viewpoint of easily discharging the contents directly from the discharge port into the oral cavity, and from the viewpoint of excellent convenience and portability. A container having a mesh of # 90 to # 305 is more preferable in the flow path of the contents from the outlet to the discharge port.

Examples 1-7, Comparative Examples 1-6
According to the formulation shown in Table 1, a liquid oral cavity composition containing a foam discharge container was produced, and liquid viscosity and pressing pressure, foam viscosity, drainage, foaming and foam retention were evaluated. The results are shown in Table 1.

(Production method)
[Examples 1-7, Comparative Examples 1-6]
According to the formulation shown in Table 1, a liquid oral composition was prepared by mixing each component. For the evaluation methods (2) to (6) described later, the obtained liquid oral composition was used as a pump former container (manufactured by Daiwa Seisakusha, F5 pump former, two meshes, mesh size: # 255). / # 255), the contents were discharged from the discharge port, and evaluation was performed as a foam sample.

(Evaluation method)
(1) -5 ° C liquid viscosity:
Each liquid oral composition obtained was stored at −5 ° C. for 1 week and then held at −5 ° C. using a BL viscometer (manufactured by Toki Sangyo Co., Ltd., M1 rotor, rotation speed: 12 to 30 rpm / 1 minute). The liquid viscosity (mPa · s) as measured was measured.

(2) -5 ° C pressing pressure:
100 g of each liquid composition for oral cavity thus obtained was filled into a pump former container (manufactured by Yamato Seisakusha, F5 pump former, 2 meshes, mesh size: # 255 / # 255), and 1 at -5 ° C. After storage for a week, the pressing pressure was measured while maintaining at -5 ° C. The pressure was measured by attaching a pressure sensor to the head of the pump former container, and measuring the maximum pressure when a force was applied vertically with a finger using a pressure measuring instrument (KYOWA, WGA-670B).

(3) Foam viscosity:
100 g of each liquid composition for oral cavity thus obtained is filled into a pump former container (manufactured by Daiwa Steel Corporation, F5 pump former, two meshes, mesh size: # 255 / # 255), and the contents are discharged from the discharge port. The foam viscosity (mPa · s) was measured at room temperature (25 ° C.) using a BH viscometer (manufactured by Toki Sangyo Co., Ltd., H2 rotor, rotation speed: 5 rpm / 1 minute).

(4) Drainage:
According to the following method, drainage was evaluated as foam performance. 100 g of each liquid composition for oral cavity thus obtained was filled into a pump former container (manufactured by Yamato Seisakusho, F5 pump former, 2 meshes, mesh size: # 255 / # 255), and a filter paper (ADVANTEC No. 1, 70 mm) were stacked and about 1 g of the contents were discharged from the discharge port. When 30 seconds have elapsed after the discharge, the foam is wiped off with a Kimwipe (Soft Wiper S150 Box, manufactured by Daio Paper Co., Ltd.), the change in the weight of the filter paper is measured (drainage amount), and the drainage rate (%) is calculated from the following formula. Calculated.
Drainage rate (%) = (drainage amount (g)) / (1.0 (g)) × 100
A higher drainage rate means faster defoaming of bubbles, less elasticity of bubbles, and poor usability.

<< Evaluation of feeling of use >>
100 g of each liquid oral composition thus obtained is filled into a pump former container (manufactured by Yamato Seisakusho, F5 pump former, two meshes, mesh size: # 255 / # 255), and discharged from the discharge port. Three specialized panelists included the foam in the oral cavity, and the following items (5) and (6) were evaluated according to each standard, and the evaluation results were determined through consultation.

(5) Foaming:
The following four stages evaluated the foaming (foaming property) when gargled and brushed in the mouth.
A: Foaming in the mouth is very good.
B: Foaming in the mouth is good.
C: Bubbles in the mouth are bad.
D: Foaming in the mouth is very bad.

(6) Foam retention:
The following four stages evaluated the goodness of foam retention (foam retention when diluted with saliva) when garnished and brushed in the mouth.
A: Very good foam in the mouth.
B: Good in the mouth.
C: Poor foam in mouth
D: The foam retention in the mouth is very bad.

Claims (6)

The following components (A), (B), (C) and (D):
(A) Anionic surfactant 0.1-2.0% by mass,
(B) Amphoteric surfactant 0.1-2.0% by mass,
(C) One or two kinds selected from polysaccharide-based natural polymers or nonionic semi-synthetic polymers whose viscosity at 25 ° C of a 1 mass% aqueous solution is 3 mPa · s or more and less than 100 mPa · s 0.1-2. 0% by mass,
(D) A liquid oral cavity composition containing a foam discharge container, containing water and having an abrasive powder content of 0.5% by mass or less.   The liquid oral cavity composition in a foam discharge container according to claim 1, wherein the component (C) is one or more selected from hydroxyethyl cellulose, hydroxypropyl cellulose, pullulan and pectin having a mass average molecular weight of 50,000 to 700,000. object.   The liquid oral cavity composition according to claim 1 or 2, wherein the mass ratio {(A) / (B)} of the component (A) and the component (B) is 0.1 or more and 3.0 or less.   The mass ratio {(A) + (B)} / (C) of the total content of component (A) and component (B) to component (C) is 0.8 or more and 4.0 or less. The liquid oral cavity composition in a foam discharge container of any one of these.   The liquid oral cavity composition according to any one of claims 1 to 4, wherein the ethanol content is 3% by mass or less.   Furthermore, the liquid oral cavity composition containing a foam discharge container of any one of Claims 1-5 containing (E) glycerin.