JPH1087456A - Non-aerosol type foamy composition for oral cavity - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject composition excellent in diffusibility of aroma, not causing lowering of foaming power with time, having good foam quality and improved in feeling to users by packing a surfactant and a specific aromatic agent into a foam discharging container. SOLUTION: This composition is obtained by compounding (A) 0.5-15wt.% surfactant (preferably a surfactant having >=10 HLB value, e.g. polyoxyethylene polyoxypropylene copolymer or lauryl sulfate) with (B) preferably 0.001-0.5wt.% of (i) one or more kinds of compounds selected from anethole, carvone, cinnamic aldehyde and menthol and (ii) one or more kinds of compounds selected from cineole, menthone, limonene and methyl salicylate and packing the compound into a foam-discharging container. Thereby, the composition does not cause lowering of foaming power with time and is excellent in diffusibility of aroma and can expect foam quality and feeling to user suitable for oral cavity.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-aerosol type foamy oral composition filled in a foam discharge container.

[0002]

2. Description of the Related Art Conventionally, powder compositions such as toothpaste, toothpaste, and liquid dentifrice have been mainly used as oral compositions. However, in the case of powdered toothpaste or toothpaste, it takes time to disperse the drug throughout the mouth within a short period of cleaning the teeth, and in the case of liquid toothpaste, the dispersion in the mouth is excellent. However, it was inferior in shape retention on a toothbrush and difficult to carry into the mouth.

[0003] In order to solve such a problem,
In recent years, various developments of foamy oral compositions have been studied. For example, JP-A-55-85513 and JP-A-55-85513.
88103, JP-A-62-15525, JP-A-62-15525
In JP-A-42917, JP-A-63-22011 and JP-A-63-233908, there has been proposed a method in which a propellant is mixed with an oral composition, filled into an aerosol container, and foamed. However, these are all aerosol types using propellants, which have safety issues,
Due to the problem of environmental pollution, the use as a propellant such as liquefied petroleum gas, dimethyl ether, or chlorofluorocarbon is not preferable in the current social situation. Therefore, development of a foamy oral composition that does not use a propellant has been awaited.

As a method of forming a foam without using a propellant, there is known a method of mixing the composition and air and filling the composition into a container for discharging foam by passing through a porous membrane. I have. As a composition filled in this way, for example, in Japanese Patent Application Laid-Open No. 5-506259, a specific amount of a viscosity-increasing polymer is added to a surfactant and an aqueous system in a former container,
A foam detergent having good foam quality can be obtained with a small amount of a surfactant, and in JP-A-5-132700, a specific amount of a monohydric alcohol or a polyhydric alcohol is added to a surfactant to obtain a foam detergent having a good foam quality. Agent, JP-A-7-252131,
JP-A-7-252132, JP-A-7-252133
JP-A-7-252134, JP-A-8-16523
4, JP-A-8-165235, JP-A-8-1837
No. 28, JP-A-8-183729 to obtain a foamy skin cleansing agent having good foaming properties by using a specific surfactant, and JP-A-8-92064 to disclose a higher fatty acid salt and other salts. A cleaning agent in which a compounded cleaning solution is filled in a former container, and a cleaning agent in which an amino acid-based surfactant and a salt-containing cleaning solution are filled in a former container have been proposed in JP-A-8-143899. However, when these techniques were applied to oral compositions as they were, many of them had strong mucous membrane irritation, and had poor flavor and poor usability. However, if a large amount of perfume ingredients are added to eliminate bad flavor, there is also a problem that the foaming property decreases with time, and the foam quality is insufficient for oral use. turn into.

The present inventors have conducted intensive studies to solve the above-mentioned problems, and as a result, when a specific compound is added,
It is found that the flavor is excellent, and the foaming property does not decrease over time, the foam quality is good and the feeling of use is improved,
The present invention has been completed.

[0006]

That is, the present invention relates to a surfactant of 0.5 to 15% and at least one selected from anethole, carvone, cinamic aldehyde and menthol, and cineole, mentone, limonene and methyl salicylate. The present invention provides a non-aerosol type foamy oral composition filled in a foam discharge container with at least one selected from among the following, and according to the present invention, has an excellent flavor,
Provided is a non-aerosol type foamy oral composition which has a stable foaming property over time, a good foam quality and an excellent feeling in use.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail.
As the surfactant used in the present invention, a low-irritant surfactant usually used for the oral cavity can be used. For example, alkyl sulfate, polyoxyethylene alkyl sulfate, N
-Acylamino acid surfactants, alkyl sulfoacetates, α-olefin sulfonates, anionic surfactants such as sulfosuccinic acid derivatives, taurate derivatives, polyoxyethylene polyoxypropylene copolymers, polyoxyethylene alkyl ethers , Polyoxyethylene fatty acid esters, fatty acid alkanolamides, sucrose fatty acid esters, polyoxyethylene hydrogenated castor oil, polyoxyethylene sorbitan fatty acid esters,
Examples include nonionic surfactants such as polyglycerin fatty acid esters, and carboxylic acid amphoteric surfactants such as betaine type, imidazolium type, imidazolium betaine type, amino acid type and amine oxide type. These can be used in combination. In order to discharge foam having excellent foam quality for the oral cavity, a surfactant having a high hydrophilicity is preferred, a surfactant having an HLB value of 10 or more is preferred, and a surfactant having an HLB value of 20 is preferred. The above are most preferable, and examples thereof include a polyoxyethylene polyoxypropylene copolymer and lauryl sulfate. The amount of surfactant depends on the type of surfactant used,
0.5 to 15% by weight is preferable, and if it is less than 0.5% by weight, the foaming property is low, so that it is difficult to discharge bubbles, and 15% by weight.
Beyond that, bitterness, irritation, etc. will appear and it is not good.

When one or more selected from anethole, carvone, cinamic aldehyde, and menthol, and one or more selected from cineol, mentone, limonene, and methyl salicylate, it has excellent flavor,
Moreover, it became clear that the foaming property did not decrease over time. The amount of these components is not particularly limited, but may be 0.001.
It is preferable to set it to 0.5% by weight.

[0009] The oral composition of the present invention may further contain other components usually used in oral compositions, such as wetting agents, monohydric alcohols, thickeners, flavors, sweeteners, pH adjusters, preservatives, and coloring agents. And the like can be appropriately compounded as long as the effects of the present invention are not impaired. However, since the composition for oral cavity of the present invention is used after being filled in a former container having a porous film, a water-insoluble powder such as an abrasive which causes clogging of the porous film is not blended.

Examples of the humectant include glycerin, sorbitol, polyethylene glycol, propylene glycol, ethylene glycol, 1,3-butylene glycol, polypropylene ghoul, xylit, and maltite.
Polyhydric alcohols such as lactit can be blended alone or in combination of two or more.
Usually, it is 3 to 20% by weight based on the whole composition.

The monohydric alcohol includes, for example, methanol, ethanol, propyl alcohol, isopropyl alcohol and the like, and ethanol is particularly preferable. These monohydric alcohols can be blended alone or in combination of two or more, and the blending amount is usually 0 to 15% by weight based on the whole composition.

Examples of the thickener include cellulose derivatives such as carrageenan and carboxymethylcellulose; alkali metal alginate such as sodium alginate; gums such as xanthan gum, tragacanth gum and gum arabic; and synthetic thickeners such as polyvinyl alcohol and sodium polyacrylate. Binders, silica gel, aluminum silica gel, inorganic binders such as veegum and the like, and the compounding amount of these thickeners is usually 0.01 to
5% by weight.

In addition to the flavoring agents of the present invention, for example, spearmint oil, peppermint oil, lemon oil, orange oil, sage oil, rosemary oil, diatom oil, perilla oil, winter green oil, clove oil, eucalyptus oil, Pigment oil or the like may be used alone or in combination of two or more, as long as the effects of the present invention are not impaired.

Examples of the sweetener include saccharin sodium, acesulfame potassium, stevioside,
Neohesperidyl dihydrochalcone, glycyrrhizin,
Examples include perillartin, thaumatin, asparatylphenylalanylmethyl ester, and ρ-methoxycinnamic aldehyde, and these can be used alone or in combination of two or more. The compounding amount is usually 0.01 to 1% by weight, preferably 0.05 to 0.5% by weight based on the whole composition.

As the pH adjuster, for example, citric acid,
Phosphoric acid, malic acid, pyrophosphoric acid, lactic acid, tartaric acid, glycerophosphoric acid, acetic acid, nitric acid, or a chemically possible salt thereof, sodium hydroxide, and the like, which are used when the pH of the composition is 5 to 9 They may be used alone or in combination of two or more so as to fall within the range. The compounding amount is usually 0.01 to 2% by weight based on the whole composition.

Further, the oral composition of the present invention includes a cationic fungicide such as cetylpyridinium chloride, chlorhexidine and benzethonium chloride, and vitamin Es such as dl-α-tocopherol acetate, tocopherol succinate and tocopherol nicotinate. , Nonionic bactericides such as triclosan, amphoteric bactericides such as dodecyldiaminoethylglycine, enzymes such as dextranase, amylase, protease, mutanase, lysozyme, lytic enzyme (Litech enzyme), sodium monofluorophosphate, monofluoro Alkali metal monofluorophosphates such as potassium phosphate, fluorides such as sodium fluoride and stannous fluoride, tranexamic acid and epsilon aminocaproic acid, aluminum chlorohydroxyl allantoin, Mud cholesterol, glycyrrhizin salts, glycyrrhetinic acid, glycerophosphate,
Chlorophyll, sodium chloride, caropeptide, a water-soluble inorganic phosphate compound and the like can be used alone or in combination of two or more.

The composition for the oral cavity of the present invention can be produced by mixing these components and according to a usual method, and the obtained composition is filled in a foam discharge container having a porous membrane.

The composition of the present invention is adjusted so that the viscosity of the stock solution of the composition is 50 cps or less, more preferably 1 to 30 cps at 25 ° C. when measured using a Brookfield viscometer. It is easy to obtain a foam having excellent foam quality. They are,
It can be adjusted by appropriately selecting the components. When the viscosity of the stock solution of the composition exceeds 50 cps, the composition becomes difficult to pass through the porous membrane, and bubbles may not be discharged.

The composition of the present invention is preferably adjusted so that the foaming power of a stock solution of the composition by the Rossmiles method is 200 cm ³ or more when measured at 25 ° C. and 1%. Foam quality and excellent detergency are obtained. These can be adjusted by appropriately selecting the components. If the foaming power of the undiluted solution of the composition is 200 cm ³ or less, the foam quality is poor and the composition may not function as a cleaning agent.

The composition of the present invention has a foam density of 0.02 to 0.02.
0.25 g / cc, and 0.02 to 0.2 g / cc.
It is preferable to adjust to be 08 g / cc. These can be adjusted by adjusting the mesh of the porous membrane of the container or by appropriately selecting the components.

The foam discharge container used in the present invention may be any one which discharges as a foam by mixing the composition with air by pressurizing and pressing the container and passing the mixture through a porous membrane. For example, the pressurizing method includes a squeeze former in which the body of a soft container is pressed with a finger, and a pump former in which the head of a cap provided with a pump mechanism is pressed with a finger. In the case of a squeeze type, for example, Japanese Patent Application Laid-Open
No. 215353 can be used. The material of the container body, polyethylene terephthalate, polyethylene, polypropylene, polyfluorocarbon, vinyl chloride, polyacrylate, ethylene-vinyl alcohol copolymer, acrylonitrile copolymer, etc., or a laminate thereof may be used, Among them, polyethylene terephthalate is preferred.

The porous film of the foam discharge container of the present invention has a thickness of 100
A mesh having a size of from 500 to 500 mesh is preferable, and a foam having an excellent foam quality can be obtained. Nylon, polyester, and the like are used for the material, and a plurality of sheets are preferable in terms of foam stability.

[0023]

EXAMPLES Next, the present invention will be described in more detail with reference to Test Examples and Examples, but the present invention is not limited thereto. All of the compounding amounts in the examples mean% by weight.

Test Example A pump-type foam discharge container having two 200-mesh porous membranes (made of polyester) was prepared by mixing and stirring a composition in which the fragrance components shown in Table 1 were blended in the following formulation. And the foam was discharged to evaluate the flavor, foaming stability over time, and foam quality (foaming properties, foam retention, foam texture). Each evaluation was performed as follows.

Formulation of composition Component name Compounding amount Polyoxyethylene polyoxypropylene copolymer 7.0 (HLB: 23) Glycerin 13.0 Ethanol 5.0 pH adjuster 0.1 Sweetener 0.2 Flavor 1.0 Water balance Total 100.0

1. After adjusting the flavor, eight professional panelists took the foam from the discharge container with a toothbrush and brushed it for 1 minute in the oral cavity, and evaluated the flavor with the criteria shown below. Table 1 shows the results. (Evaluation criteria) 1: Good flavor. 0: Slightly poor flavor. -1: The flavor is very poor and cannot be used for actual use.

2. Stability over time of foaming property Initially after adjustment and after storage at room temperature for one month, a foam is discharged from a pump-type foam discharge container into a cylindrical container having a diameter of 5 cm,
The height H of the top of the foam was measured. The evaluation was performed based on the following criteria. Table 1 shows the results. (Evaluation criteria) ：: H was more than 5 cm immediately after adjustment and after storage for one month. Δ: H is more than 5 cm immediately after adjustment, but becomes 5 cm or less after storage for one month. X: H is 5 cm or less immediately after adjustment and after storage for one month.

3. Foam retention After adjustment, 5cm diameter from pump type foam discharge container
Of the foam at the time of discharge and the height h (cm) of the foam after leaving at room temperature for 3 minutes, and retain the foam. The rate was determined by the following equation. The evaluation was performed based on the following criteria. The results are shown in Tables 1 and 2. (Evaluation criteria) ：: Retention rate is 70% or more. Δ: Retention rate is 40% or more and less than 70%. X: Retention rate is less than 40%.

[0029]

[Formula 1] Foam retention (%) = h / H × 100

4. After adjusting the texture of the foam, the state of the foam when the foam was discharged from a pump-type foam discharge container was visually evaluated. Table 1 shows the results.
It is shown in Table 2. (Evaluation criteria) ：: Uniform and fine. Δ: Large bubbles are slightly mixed. ×: Very large bubbles.

[0031]

[Table 1]

As is clear from the results shown in Table 1, when a specific fragrance component and a surfactant are used in combination, the flavor is excellent, and
It was confirmed that the foaming property did not decrease over time.

[0033]

[Table 2]

As is clear from the results in Table 2, it was confirmed that when a surfactant having a high HLB value was used, a foam having particularly excellent foam quality was obtained.

[0035]

According to the present invention, a non-aerosol type foam having a superior foaming property, a foam quality suitable for the oral cavity, and a feeling of use, having a foaming property stably maintained over time. An oral composition is provided.

Claims (3)

[Claims] 1. A foam is discharged with 0.5 to 15% of a surfactant and at least one selected from anethole, carvone, cinnamaldehyde, and menthol, and at least one selected from cineol, menthone, limonene, and methyl salicylate. Non-aerosol foam composition for oral cavity filled in container 2. The method according to claim 1, wherein a highly hydrophilic surfactant is used.
Non-aerosol type foamy oral composition 3. The non-aerosol foam composition for oral cavity according to claim 1, wherein a surfactant having an HLB value of 10 or more is used.