JP4931338B2 - Dentifrice composition - Google Patents

Description

  The present invention relates to a dentifrice composition having excellent usability.

Dentifrices are desired from the standpoints of cleaning power and feeling of use, with an appropriate amount of foam persisting and easy to brush for a long time. Regarding this foaming, those having high foaming properties are generally preferred, and various surfactants have been studied for their foaming power and foaming speed.
In order to obtain high foaming properties, contrivances have been made such as increasing the amount of foaming or maintaining foams with high shape retention for a long time (Patent Document 1).
On the other hand, as a dentifrice containing cellulose, a dentifrice composition containing cellulose powder having an average particle size of 0.005 to 1 mm is disclosed as an alternative to an abrasive (Patent Document 2). However, there is no report on the relationship between the cellulose powder and the dentifrice foam quality and the amount of foaming.
JP 11-209255 A JP 55-98111 A

  An object of the present invention is to provide a dentifrice composition that produces a fine tactile foam when used and has a high foam feeling.

As a result of diligent research to solve the problems, the present inventors have found that the above object can be achieved by blending a specific amount of powdered cellulose, a surfactant and a granule component, and complete the present invention. It came to.
That is, the present invention includes the following components (A), (B) and (C):
(A) powdered cellulose,
(B) a surfactant,
(C) Granules having a particle size that passes through a 30 mesh sieve but does not pass through a 200 mesh sieve,
The dentifrice composition containing this is provided.

  According to the present invention, it is possible to provide a dentifrice composition that produces a fine tactile foam during use and has a high foam feeling.

  As the cellulose powder (A) used in the present invention, one or more kinds of pulp powder, insoluble powdered cellulose, powdered α-cellulose, pulverized one obtained by chemically treating cellulose such as pulp are used. can do. The average degree of polymerization of the powdered cellulose is preferably 350 or more, more preferably about 350 to 2250, and still more preferably about 440 to 2250. In addition, the powdered cellulose is preferably non-granulated powdered cellulose having an average particle diameter of 10 to 300 μm, more preferably 10 to 100 μm, and particularly preferably 15 to 50 μm in terms of fine touch and foam feeling. .

  The content of the powdered cellulose is preferably 0.2 to 3% by mass in the entire dentifrice composition, and is preferably 0.4% by mass or more for the purpose of obtaining a sticky foam. Is preferably 2% by mass or less.

  When producing the composition of the present invention, the powdered cellulose may be blended as a powder or a dispersion liquid dispersed in a liquid such as water, lower alcohol, polyhydric alcohol or the like. Examples of the lower alcohol include ethanol and isopropanol. Examples of the polyhydric alcohol include glycerin, polyethylene glycol, and propylene glycol. In the production, it is preferable to use a dispersion liquid dispersed in a liquid such as water, lower alcohol or polyhydric alcohol.

The surfactant (B) to be blended in the dentifrice composition of the present invention is an anionic surfactant, a nonionic surfactant having an HLB value of 16 or more, or an amphoteric surfactant, preferably an anionic surfactant. It is an agent.
The anionic surfactant is not particularly limited as long as it is an anionic surfactant generally used in a dentifrice composition. For example, acylamino acid salts such as sodium acylglutamate and acylsarcosine sodium, and alkylphosphates such as sodium alkylphosphate Alkyl sulfate ester salts, higher fatty acid sulfonated monoglyceride salts, fatty acid ester salts of isethionic acid, N-methyl long-chain acyl taurine sodium salt, polyoxyethylene monoalkyl phosphate, and the like. The alkyl group and acyl group of the hydrophobic group preferably have 6 to 18 carbon atoms, particularly 10 to 14 carbon atoms, and sodium salts are preferable, but the foaming property is good and the alkyl sulfate ester salt is available from the viewpoint of being inexpensively available. Is particularly preferred. The anionic surfactant is preferably contained in the dentifrice composition of the present invention in an amount of 0.1 to 5% by mass, particularly 0.2 to 2% by mass.

  The nonionic surfactant having an HLB value (Griffin) of 16 or more is not particularly limited as long as it is a nonionic surfactant generally used in a dentifrice composition. For example, sucrose fatty acid ester, glycerin fatty acid ester, polyglycerin Examples include fatty acid esters, polyoxyethylene sorbitan fatty acid esters, and polyoxyethylene hydrogenated castor oil. Particularly preferred are nonionic surfactants having an HLB value (Griffin) of 18-20.

(Equation 1)
HLB value = 20 (1-S / A)
(S: Saponification value, A: Acid value of fatty acid used)

  The fatty acid part of these nonionic surfactants preferably has 6 to 18 carbon atoms. The content thereof is preferably from 0.1 to 30% by mass, more preferably from 0.2 to 10% by mass in the entire dentifrice composition.

  The amphoteric surfactant is not particularly limited as long as it is an amphoteric surfactant generally used in oral compositions, and examples thereof include alkylbetaine type, alkylamide betaine type, imidazoline type, and glycine type. The content is preferably 0.01 to 10% by mass, more preferably 0.05 to 5% by mass in the entire dentifrice composition.

The granule (C) blended in the dentifrice composition of the present invention has a particle size (75 to 500 μm) that passes through a 30 mesh sieve (JIS standard) but does not pass through a 200 mesh sieve (JIS standard). Examples of such granules include granules obtained by binding a water-insoluble powder material described in JP-B-06-021053 with a water-insoluble inorganic binder, and only calcium carbonate fine particles described in Japanese Patent No. 3170250. Granules obtained by agglomeration, granules obtained by binding a water-insoluble powder material described in JP-A No. 04-243815 with a water-insoluble organic binder, ratio by BET method described in JP-A No. 09-12436 Examples thereof include wet-process silica granules having a surface area of 150 to 450 m ² / g. Preferably, it is a granule containing calcium carbonate or silicic acid anhydride as a main component, and from the viewpoint of feeling of use, a granule having a disintegration strength that disintegrates when a load of 0.1 to 30 g per granule is applied is preferable. The content thereof is preferably 1 to 30% by mass, more preferably 2 to 20% by mass in the entire dentifrice composition.

  The composition of the present invention preferably further contains two or more binders. Containing binders include sodium alginate, sodium carboxymethyl cellulose, carrageenan, xanthan gum, sodium polyacrylate, hydroxyethyl cellulose, hydroxypropyl cellulose, pectin, tragacanth gum, gum arabic, guar gum, caraya gum, locust bean gum, gellan gum, tamarind gum , Psyllium seed gum, polyvinyl alcohol, sodium chondroitin sulfate, methoxyethylene maleic anhydride copolymer, and particularly one or more selected from the group consisting of sodium alginate, sodium carboxymethylcellulose, carrageenan and xanthan gum It is preferable to contain. The content of the binder is usually about 0.1 to 3% by mass, preferably 0.2 to 2% by mass, and more preferably about 0.5 to 1.5% by mass in the whole composition.

  In addition to the components described above, the dentifrice composition of the present invention can appropriately contain, for example, wetting agents, sweeteners, pH adjusters, fragrances, preservatives, enzymes, bactericides, medicinal ingredients, pigments, dyes and the like. .

  As the wetting agent, glycerin, sorbitol, propylene glycol, polyethylene glycol, xylitol, maltite, lactit, trehalose and the like are preferably used.

  Examples of the sweetening agent include saccharin sodium, aspartame, thaumatin, acesulfame potassium, stevioside, stevia extract, paramethoxycinnamic aldehyde, neohesperidyl dihydrochalcone, and perilartin.

  Examples of the pH adjuster include phosphoric acid and salts thereof (sodium phosphate, sodium hydrogen phosphate, etc.), citric acid and salts thereof (sodium citrate, etc.), malic acid and salts thereof, gluconic acid and salts thereof, malee Acids and salts thereof, aspartic acid and salts thereof, succinic acid and salts thereof, glucuronic acid and salts thereof, fumaric acid and salts thereof, glutamic acid and salts thereof, adipic acid and salts thereof, hydrochloric acid, sodium hydroxide, potassium hydroxide, Examples thereof include sodium silicate. The content of the pH adjusting agent is not particularly limited as long as the desired pH is reached, but is usually about 0.01 to 5% by mass, preferably about 0.1 to 3% by mass in the entire dentifrice composition. The pH of the composition of the present invention is not particularly limited as long as the effect of the present invention is exhibited, but is usually about 4 to 10.

  As a fragrance, 1-menthol, carvone, anethole, eugenol, limonene, peppermint oil, spearmint oil, ocimen, n-amyl alcohol, citronellol, α-terpineol, methyl salicylate, methyl acetate, citronole acetate, cineol, linalool, Examples include ethyl linalool, crocodile, thymol, lemon oil, orange oil, sage oil, rosemary oil, cinnamon oil, pimento oil, perilla oil, clove oil, and eucalyptus oil.

  Other various active ingredients include allantoinchlorohydroxyaluminum, hinokitiol, lysozyme chloride, glycyrrhizic acid and its salts, sodium chloride, tranexamic acid, epsilon aminocaproic acid, dl-tocopherol acetate, azulene, glycyrrhetinic acid, copper chlorophyllin sodium, Copper compounds such as copper gluconate, aluminum lactate, strontium chloride, potassium nitrate, berberine, hydroxamic acid and its derivatives, sodium tripolyphosphate, zeolite, dextranase, mutanase, amylase, methoxyethylene-maleic anhydride copolymer, polyvinylpyrrolidone , Epidihydrocholesterin, dihydrocholesterol, zinc citrate, sugarcane, duck, clove, rosemary, ugone, safflower Extract etc., alpha-bisabolol, chlorhexidine salts, triclosan, cetylpyridinium chloride, benzethonium chloride, trichlorocarbanilide, and the like.

  Although content of water can be suitably set according to a dosage form etc., it is about 0-60 mass% normally in the whole composition, Preferably it is about 10-50 mass%.

Further, the dentifrice composition of the present invention does not contain a nonionic surfactant having an HLB value of 15 or less for the purpose of obtaining a sticky foam, or even if it contains it, the anionic surfactant is 1 part by mass. Sometimes it is preferably 0.5 parts by mass or less, more preferably 0.3 parts by mass or less.

  EXAMPLES Hereinafter, although an Example and a comparative example are given and this invention is demonstrated in more detail, this invention is not limited to these Examples. Unless otherwise specified, “%” represents “mass%”.

  The toothpastes of Example 1 and Comparative Examples 1 and 2 were prepared according to the formulations shown in Tables 1-3.

Using the obtained dentifrice, a foaming property test was performed. A φ3 cylindrical acrylic rod was placed on an acrylic plate (30 × 80 × 3mm) perpendicular to the pedestal movement direction, and a brushing surface was created and attached to an acrylic container (80 × 175 × 35mm) to fix it. For the created brushed surface,
Using a brushing machine (FIG. 1: the pedestal moves back and forth), the dentifrice of Example 1 and the dentifrices of Comparative Examples 1 and 2 were diluted 5-fold and subjected to a foaming test.
The brushing conditions were a load of 500 g, a speed of 120 rpm, an amplitude of 50 mm, and the number of times of brushing 500 times. In the measurement, the liquid after cleaning is transferred to a measuring cylinder and the amount of bubbles is evaluated. The evaluation results are shown in Table 4 as the amount (mL) of the bubble upper part of the measuring cylinder.

In addition, each dentifrice was used by five panelists, and a sensory evaluation was performed on the foam quality and foaming properties at the time of use. Evaluation was performed according to the following criteria.
(1) Fine and fine foam: 2
Slightly fine: 1
Neither: 0
Slightly rough: -1
Coarse: -2
(2) Elasticity of bubbles Elasticity: 2
Slightly elastic: 1
Neither: 0
Slightly watery: -1
Watery: -2
(3) Bubble stickiness Sticky: 2
Slightly sticky: 1
Neither: 0
Not very sticky: -1
No stickiness: -2
(4) Fast foaming at the time of use: 2
Slightly faster: 1
Neither: 0
Slightly slow: -1
Slow: -2

The results (total of evaluations of five panelists) are shown in Table 5.

  As a result, the dentifrice containing no powdered cellulose and granules (Comparative Example 1) and the dentifrice containing no powdered cellulose (Comparative Example 2) both had insufficient foaming and poor foam quality. In contrast, the dentifrice of the present invention containing powdered cellulose and granules had good foaming and fine foam quality.

It is the schematic of a brushing machine.

Claims (4)

The following components (A), (B) and (C):
(A) Non-granulated powdered cellulose having an average degree of polymerization of 440 to 2250 and an average particle diameter of 10 to 300 μm 0.4 to 2 % by mass
(B) a surfactant,
(C) Granules having a particle size that passes through a 30 mesh screen but not through a 200 mesh screen,
A dentifrice composition comprising:   The dentifrice composition according to claim 1, wherein (B) the surfactant is an anionic surfactant.   The dentifrice composition according to claim 1 or 2, further comprising two or more binders.   Binder is sodium alginate, sodium carboxymethylcellulose, carrageenan, xanthan gum, sodium polyacrylate, hydroxyethylcellulose, hydroxypropylcellulose, pectin, tragacanth gum, gum arabic, guar gum, caraya gum, locust bean gum, gellan gum, tamarind gum, psyllium seed gum 4. The dentifrice composition according to claim 3, wherein the composition is at least two selected from the group consisting of polyvinyl alcohol, sodium chondroitin sulfate and a methoxyethylene maleic anhydride copolymer.

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